Infrastructure of the Spatial Information in the European Community (INSPIRE) Based on Examples of Italy and Poland

: Binding and planned community regulations regarding INSPIRE and other documents resulting from work on INSPIRE have forced the member countries to implement new or updated regulations. The purpose of creating the spatial information infrastructure was to unify the exchange of geographical data at the national and international levels, create transparent and favorable conditions for the use of geographical data, facilitate decision-making and develop business activity, and, as a consequence, facilitate the creation of the INSPIRE geoportal by the European Research Center (JRC) of the European Commission, which aims be the central hub of the European spatial information infrastructure. Land management systems use layers from geoportals and are also a data source because their task is to develop sustainable space development. The article presents the rules for implementing EU directives in Poland and Italy at various levels of detail and examines access to data and spatial information infrastructure. A comparative analysis of geoportals was performed in terms of the functionality and availability of free data (types of data) at national and local levels in terms of veriﬁcation of compliance with the Ubiquitous Public Access Context Information Model (UPA) deﬁned by the International Organization for Standardization (ISO) 19100. National geoportals (Polish Geoportal 2 and the Italian-Geoportale Nazionale) and Municipal Spatial Information Systems from the cities of Olsztyn and Bari were compared.


Introduction
The development of geoportals has resulted in easy access to spatial information. Cartographers used to draw maps, analyze them, and use them for orientation, and now they have converted them to digital form. Geoinformation is used in many areas of people's lives [1]. There are a large number of databases in the European Community countries, which are scattered over a number of institutions depending on the area concerned. It is very time-consuming to collect comprehensive spatial information on a given region, and it is almost impossible to compare data between different EU countries because they were not previously harmonised. To change this situation, in 2007, the European Commission adopted the INSPIRE Directive (Directive 2007/2/EC of the European Parliament and of the Council of 14 March 2007) to establish an Infrastructure for Spatial Information in the European Community, whose main objective is to facilitate and accelerate access to data and to increase the possibility of data exchange within EU countries [2]. The development of Spatial Data Infrastructure (SDI) is an important aspect in studies on geoinformation because of the exchange of spatial data. Transport Systems (ITS) [47][48][49]. The other method is to evaluate the results of the validation of datasets/services in the INSPIRE Geoportal Metadata Validator and ETF test projects from github to test the compliance of services with the requirements of the INSPIRE technical guidelines [50].

Materials and Methods
The aim of the study was to compare the degree of advancement in studies on creating and developing geoportals. The subject of the research was the existing Polish National Spatial Data Infrastructure and Italian National Spatial Data Infrastructure. The analysis covered the following systems: Geoportal.gov.pl (Poland) and National Geoportal (Italy). The research methodology is presented in Figure 1. A comparative analysis method was adopted for the study, using a combination of Dukaczewski's [14] and Dawidowicz's [1] methods. The research was based on the use of the functional matrix (data and service scope) and compliance with the legal framework derived from the INSPIRE Directive guidelines. According to the five-point Tilgner scale [51], the following system quality classes were adopted for evaluation: • 0-20% points-very poor quality; • 21-40% points-poor quality; • 41-60% of the points-sufficient quality; • 61-80% of the points-good quality; • 81-100% points-very good quality.
After a detailed analysis of the EU decrees, it was assumed that the ISO 19.100 series of standards should be adopted as the technical basis for INSPIRE, so we examined whether the obligatory 34 topics were implemented in the Polish and Italian legal acts. A gustatory analysis of the implementation at the national and regional levels was then performed. Additionally, a percentage synthetic quality indicator of Polish and Italian geoportals will be determined, calculated by summing up the percentage range of functionality and verifying compliance with the Ubiquitous Public Access Contextual Information Model (UPA) defined by the International Organization for Standardization (ISO) 19100.
ISPRS Int. J. Geo-Inf. 2020, 9, x FOR PEER REVIEW 3 of 16 14.825 Geographic Data Files (GDF) standard for Intelligent Transport Systems (ITS) [47][48][49]. The other method is to evaluate the results of the validation of datasets/services in the INSPIRE Geoportal Metadata Validator and ETF test projects from github to test the compliance of services with the requirements of the INSPIRE technical guidelines [50].

Materials and Methods
The aim of the study was to compare the degree of advancement in studies on creating and developing geoportals. The subject of the research was the existing Polish National Spatial Data Infrastructure and Italian National Spatial Data Infrastructure. The analysis covered the following systems: Geoportal.gov.pl (Poland) and National Geoportal (Italy). The research methodology is presented in Figure 1. A comparative analysis method was adopted for the study, using a combination of Dukaczewski's [14] and Dawidowicz's [1] methods. The research was based on the use of the functional matrix (data and service scope) and compliance with the legal framework derived from the INSPIRE Directive guidelines. According to the five-point Tilgner scale [51], the following system quality classes were adopted for evaluation: • 0-20% points-very poor quality; • 21-40% points-poor quality; • 41-60% of the points-sufficient quality; • 61-80% of the points-good quality; • 81-100% points-very good quality.
After a detailed analysis of the EU decrees, it was assumed that the ISO 19.100 series of standards should be adopted as the technical basis for INSPIRE, so we examined whether the obligatory 34 topics were implemented in the Polish and Italian legal acts. A gustatory analysis of the implementation at the national and regional levels was then performed. Additionally, a percentage synthetic quality indicator of Polish and Italian geoportals will be determined, calculated by summing up the percentage range of functionality and verifying compliance with the Ubiquitous Public Access Contextual Information Model (UPA) defined by the International Organization for Standardization (ISO) 19100.  , which is intended to be the central hub of the European Spatial Information Infrastructure. The efficient use of a geoportal is possible only if the data are shared. Shared layers contain information about the approximate boundaries of parcels, but they can only be used for approximate identification of the spatial location of the parcel and its estimate of the plot. From the assumption of the scope and access to a specific data group, each Member State should act in accordance with Commission Regulation ( As defined in INSPIRE, "infrastructure for spatial information" includes metadata, spatial data sets, and spatial data services; network services and technologies; and data exchange, access and use. Data infrastructure is also a national spatial information resource and includes technologies and techniques for data discovery, storage, and cataloguing [7]. In Europe, national and regional initiatives have been taken to legitimize the Spatial Data Infrastructure, mainly by public administrations, which are not often private by public order [52]. Land administration systems are subject to continuous reforms, and EU member countries have different regulations, but the common feature is that the effectiveness of land administration systems depends on the efficiency of data quality, although there is no internationally recognized methodology for assessment and comparison. Therefore, the authors check the quality of data that come from the available layers in geoportals.

Italian Geoportal
The National Spatial Data Directory (RNDT) was created on the basis of Article 59 of the Digital Administration Code, Legislative Decree 82/2005 (CAD) and was identified as a database of national importance on the basis of Article 60. In accordance with article 59 of the CAD mentioned above, the technical specifications defining the content of the RNDT, as well as its implementation and updates,  Figure 2, developed in the Repertorio Nazionale dei Dati Territoriali, the portal of the National Catalog for Spatial Data (RNDT), shows a map of Italy with the geological distribution and bathymetry of the surrounding seas. The geoportal provides access to 100 thematic layers. Menus can be moved to different places on the screen, and layers can be set in order of display, and they can even be set to permeability and legend display, but only for one layer. The user can choose from five background maps, and these are orthophotos from 1998, 1994, 2000, 2006 and 2012. Additionally, it is possible to enable 3D view, make measurements using the WMS or ArcGIS service, or save or print the map. Data infrastructure is also a national spatial information resource and includes technologies and techniques for data discovery, storage, and cataloguing [7]. In Europe, national and regional initiatives have been taken to legitimize the Spatial Data Infrastructure, mainly by public administrations, which are not often private by public order [52]. Land administration systems are subject to continuous reforms, and EU member countries have different regulations, but the common feature is that the effectiveness of land administration systems depends on the efficiency of data quality, although there is no internationally recognized methodology for assessment and comparison. Therefore, the authors check the quality of data that come from the available layers in geoportals.

Italian Geoportal
The  Figure 2, developed in the Repertorio Nazionale dei Dati Territoriali, the portal of the National Catalog for Spatial Data (RNDT), shows a map of Italy with the geological distribution and bathymetry of the surrounding seas. The geoportal provides access to 100 thematic layers. Menus can be moved to different places on the screen, and layers can be set in order of display, and they can even be set to permeability and legend display, but only for one layer. The user can choose from five background maps, and these are orthophotos from 1998, 1994, 2000, 2006 and 2012. Additionally, it is possible to enable 3D view, make measurements using the WMS or ArcGIS service, or save or print the map.

Geoportal of Poland
Within the GEOPORTAL.GOV.PL project, the infrastructure of the National Spatial Information Infrastructure (KIIP) nodes was created. These cooperate with each other and provide services that range from searching and sharing data to analysis. The network of KIIP nodes was based on three levels: central, provincial, and county. As a result of the design work, an Internet portal was also created (www.geoportal.gov.pl). This acts as a broker, providing users with data and geospatial services.

Geoportal of Poland
Within the GEOPORTAL.GOV.PL project, the infrastructure of the National Spatial Information Infrastructure (KIIP) nodes was created. These cooperate with each other and provide services that range from searching and sharing data to analysis. The network of KIIP nodes was based on three levels: central, provincial, and county. As a result of the design work, an Internet portal was also created (www.geoportal.gov.pl). This acts as a broker, providing users with data and geospatial services. Figure 3, developed in Geoportal 2, shows The portal of the Central Office of Geodesy and Cartography, a map of Poland divided into Land uses. The portal offers a choice of several languages, in Polish and English, but the legends are generated in Polish. The user can use the national version, the INSPIRE version, and the 3D version and can check the catalog of resources and download mobile applications, e.g., for geocoding or browsing on a mobile device. In the INSPIRE version, the user can use 40 thematic layers in the portal, where it is possible to turn the visibility of data on and off and additionally use the WMS and WMTS browsing services. In the national version, the user has 128 thematic layers at their disposal, in which it is possible to turn the visibility of data on and off and additionally use the WMS and WMTS browsing services.

Bari Geoportal
The Territorial Information System (SIT) of the metropolitan area of Bari ("Area Vasta Metropoli Terra di Bari", which includes 41 municipalities) contains a number of online functions that are linked to the access profile. The geoportal provides access to 222 thematic layers. By accessing this anonymously without the need for authentication, the anonymous user can browse data at the regional level concerning PPTR services (DGR 176/2015), PAI and WMS provided by the regional Territorial Information System (SIT Puglia) and the Apulia Basin authorities, including the cartography of the cadastral maps of the selected municipality with all the spatial planning instruments that can be activated through WMS services. The WMS of the Area Vasta Metropoli Terra di Bari related to the general plan (PRG) is also available as an anonymous user. The services available through the SPID can be obtained by logging in with certification. The logged-in user receives a standard set of all city planning tools.

Bari Geoportal
The Territorial Information System (SIT) of the metropolitan area of Bari ("Area Vasta Metropoli Terra di Bari", which includes 41 municipalities) contains a number of online functions that are linked to the access profile. The geoportal provides access to 222 thematic layers. By accessing this anonymously without the need for authentication, the anonymous user can browse data at the regional level concerning PPTR services (DGR 176/2015), PAI and WMS provided by the regional Territorial Information System (SIT Puglia) and the Apulia Basin authorities, including the cartography of the cadastral maps of the selected municipality with all the spatial planning instruments that can be activated through WMS services. The WMS of the Area Vasta Metropoli Terra di Bari related to the general plan (PRG) is also available as an anonymous user. The services available through the SPID can be obtained by logging in with certification. The logged-in user receives a standard set of all city planning tools. Figure 4 developed in the Territorial Information System (SIT) showing a map of the analyzed part of the city of Bari in terms of public greenery. It was developed using the "Public green" layer with the following attributes: Visual Tree Assessment, Trees-Bushes, Soil, Green Areas, and the base ISPRS Int. J. Geo-Inf. 2020, 9, 755 7 of 16 map "Aerial with labels" (the user has 5 base maps to choose from the option without a base map). Additionally, the portal generates a legend in Italian. The portal is functional and is an element of a uniform spatial information system for the municipalities of the metropolitan area of Bari. It is possible to add your own thematic layers and data, as well as access to open-source data, geolocation, distance and surface measurements, and street view data and to generate maps in both png and pdf formats. Construction of such a technologically and functionally advanced system was possible using the information available on the geoportal website from the EU Structural Fund for 2007-2013 and the Metropolitan Cities Operational Programme (2014-2020). showing a map of the analyzed part of the city of Bari in terms of public greenery. It was developed using the "Public green" layer with the following attributes: Visual Tree Assessment, Trees-Bushes, Soil, Green Areas, and the base map "Aerial with labels" (the user has 5 base maps to choose from the option without a base map). Additionally, the portal generates a legend in Italian. The portal is functional and is an element of a uniform spatial information system for the municipalities of the metropolitan area of Bari. It is possible to add your own thematic layers and data, as well as access to open-source data, geolocation, distance and surface measurements, and street view data and to generate maps in both png and pdf formats. Construction of such a technologically and functionally advanced system was possible using the information available on the geoportal website from the EU Structural Fund for 2007-2013 and the Metropolitan Cities Operational Programme (2014-2020).

Olsztyn Geoportal
The geoinformation portal of the city of Olsztyn provides universal access to updated reference spatial databases of the city, including, in particular, data from public registers related to the spatial management of the city. This includes spatial development plans, property ownership/ownership structure, as well as decisions/establishments related to the investment and construction process. Figure 5, developed in the City Spatial Information System of the City of Olsztyn, shows a map of the analyzed part of the city in terms of noise. For Polish towns with more than 100 thousand inhabitants, such maps are obligatory. The purpose of proper categorization of the data access function was to distinguish between two groups of users: (1) internal users, i.e., employees of the office, employees of the City's organizational units covered by the scope of the system's implementation and other authorized entities, organizational units, and natural persons to whom such access has been formally granted, and (2) external users, including all those outside the first group of internal users, i.e., legal persons (institutions and business entities) and natural persons, in particular, residents. The user has 8 thematic layers at his disposal, including city plans in the form of an orthophotomap from 1995, 2005, 2009, and 2017. The MSIPMO application site consists of tool software such as database servers, map servers, and standard GIS software based on licenses of the standard Desktop GIS class and designed for PMSIP specialists and advanced users for tasks related to the handling of the complex geometry of spatial data, performing complex cartographic and analytical works, field inventory, and application software, which consists of internet and intranet map portals.

Olsztyn Geoportal
The geoinformation portal of the city of Olsztyn provides universal access to updated reference spatial databases of the city, including, in particular, data from public registers related to the spatial management of the city. This includes spatial development plans, property ownership/ownership structure, as well as decisions/establishments related to the investment and construction process. Figure 5, developed in the City Spatial Information System of the City of Olsztyn, shows a map of the analyzed part of the city in terms of noise. For Polish towns with more than 100 thousand inhabitants, such maps are obligatory. The purpose of proper categorization of the data access function was to distinguish between two groups of users: (1) internal users, i.e., employees of the office, employees of the City's organizational units covered by the scope of the system's implementation and other authorized entities, organizational units, and natural persons to whom such access has been formally granted, and (2) external users, including all those outside the first group of internal users, i.e., legal persons (institutions and business entities) and natural persons, in particular, residents. The user has 8 thematic layers at his disposal, including city plans in the form of an orthophotomap from 1995, 2005, 2009, and 2017. The MSIPMO application site consists of tool software such as database servers, map servers, and standard GIS software based on licenses of the standard Desktop GIS class and designed for PMSIP specialists and advanced users for tasks related to the handling of the complex geometry of spatial data, performing complex cartographic and analytical works, field inventory, and application software, which consists of internet and intranet map portals.
The implementation of INSPIRE allows for very high data analysis capabilities from anywhere in the world. This success has been recognized by the Cities and especially the European capitals, which have recognized this way of sharing data as functional and attractive to the user. The way data are integrated and the approach to the user and the choice of the system are often different between the portals of cities, regions and the country there is a big difference as in Poland and sometimes, as in Italy, they are the same for the whole region. Approaches are different but the goal is the same to make geographical information available in an easy and fast way. The implementation of INSPIRE allows for very high data analysis capabilities from anywhere in the world. This success has been recognized by the Cities and especially the European capitals, which have recognized this way of sharing data as functional and attractive to the user. The way data are integrated and the approach to the user and the choice of the system are often different between the portals of cities, regions and the country there is a big difference as in Poland and sometimes, as in Italy, they are the same for the whole region. Approaches are different but the goal is the same to make geographical information available in an easy and fast way.

Geoportal Verification
In the research, the percentage functionalities of geoportals (data scope and services- Table 1) and the percentage compliance with the INSPIRE Directive legal framework (Table 2) were determined on the basis of matrixes 1 and 2. Then, on this basis, the quality will be assigned according to the Tilgner scale. Table 1. Geoportal functionalities (data and service coverage), own study based on data from Raport https://inspire.ec.europa.eu/documents/summary-report-status-implementation-inspire-directive-eu and [1].

Geoportal Verification
In the research, the percentage functionalities of geoportals (data scope and services- Table 1) and the percentage compliance with the INSPIRE Directive legal framework ( Table 2) were determined on the basis of matrixes 1 and 2. Then, on this basis, the quality will be assigned according to the Tilgner scale. Table 1. Geoportal functionalities (data and service coverage), own study based on data from Raport https://inspire.ec.europa.eu/documents/summary-report-status-implementation-inspire-dire ctive-eu and [1].

Functionality
Polish Geoportal Italy Geoportal Generating animation-recording of a flight over the map − − 3 Thumbnail/preview + + 4 Panel layer-selection of layer display + + 5 Legend Back + + 7 Retry Zoom to the selected zone + + 10 Zoom to selected objects − − 11 Decreasing Moving the map (the cursor) Centering General view-zoom to full extent of the map + + 15 Selection of units − − 16 Ruler-measure the distance + + 17 Measurement of surface + + 18 Coordinate system choice + + 19 Coordinate transformation + + 20 Coordinate measurement + +  [14].

11
Area management/restriction/regulation zones and reporting units − + The percentage functionality of Geoportals is determined on the basis of Table 1. The advantages mean that the functionality exists and the disadvantages that it does not. After summing up the pluses from Table 1 we conclude that the Polish Geoportal has 66% functionality and the Italian Geoportal has 61%. According to the Tilgner scale, both Geoportals in terms of functionality were qualified as good quality as a result of the research. On the basis of the conducted research, we conclude that most of the functionalities and cooperation related to the exchange of data and the resource are at a similar level, although acquiring WMTS services, vector data, creating links, detailed search on roads, railroads and other attributes or the current orthophotomap are important elements that are present in the Polish geoportal, although there is no time slider, menu for displaying layers and laying them which resembles GIS software, map tools or data selection depending on the type of data.
The ISO 19.100 series of standards is the technical basis for INSPIRE, and they were established by the European Standardisation Organisation Comité Européen Normalisation-CEN TC/211. The implementation of the elements contained in Table 1 is divided into groups, which are incorporated into the INSPIRE directive as annexes. Member States indicated that by 2010, those made available should have included Annexes I and II, and Annex III should have been available by 2013 [53]. The percentage functionality of Geoportals is determined on the basis of Table 2. The advantages mean that functionality exists and the disadvantages that it does not. After summing up the pluses from Table 2 we conclude that the Polish and Italian Geoportal has 70.5 percent. According to the Tilgner scale (Babbie, 2008), both Geoportals in terms of functionality as a result of the research were qualified as good quality. After analyzing the ISO 19.100 standards, we conclude that the Italian geoportal has made more layers available. The Geology layer is present in both portals. This is due to the fact that for several years, the Italian Geological Survey within ISPRA (Italian Institute for Environmental Protection and Research) has had available, in cooperation with Esri Italy, a geographical portal for the dissemination of geological spatial data. The development of the SDI started in 1990 and now consists of more than 15 databases on geological maps and other Italian geotechnical data [54]. Sharing and selecting geological data on maps in geoportals generates problems with semantic dependencies, and different geological database (DB) structures cause interfaces not to function at their full compatibility, so that they can work with other products or systems that exist or will exist in the future, without restricting access or implementation possibilities. The lack of integration is due to the imperfection of programming languages and geological map metadata in the mandatory data stored in the INSPIRE directive, which defines two important guidelines ("Geological Data Specification" and "Metadata Implementation Rules") that can be used for encoding and sharing standard geological information [55]. However, the Land Use layer only covers burnt areas. The natural risk profile was developed on 3 layers in the Italian geoportal, while in Poland it is included as data from Corina Land Cover 2018 because it is more in other thematic portals. In the Italian geoportal, there are two demographic layers, and in the Polish one, there is only one, because there is a separate Geostatistics portal with statistical data in Poland, where it is possible to develop maps showing demography and agricultural and industrial production data. All statistical data collected by the Central Statistical Office in Poland are in a 3-stage division. It is necessary to pay attention to several layers with threats in the Italian geoportal, which are not present in the Poland geoportal. The prototype (ArcGIS for INSPIRE) of the Geoportal, which integrates the geodetic database with the INSPIRE directive scheme, has been used to carry out the entire process of mapping and information transformation of spatial data about soil quality and waste area management into compatible INSPIRE Map (View) services [56]. There is a separate Portal for flood-related hazards in the Poland geoportal. However, the disadvantage of the Italian geoportal is the lack of current data, and in Poland, you have to use a transfer to other thematic portals, e.g., to access noise maps, as shown in Figure 5. Land administration systems are subject to continuous reforms and EU member countries have different regulations, but the common feature is that the effectiveness of land administration systems depends on the efficiency of data, although there is no internationally recognized methodology for assessment and comparison. Therefore, the authors check the quality of data that comes from the available layers of geoportals. In Poland, for example, there is a National Agricultural Support Centre (NASC) for the management of agricultural land. This is what distinguishes the Polish system from others, as this Agency was established to supervise and implement the policy of administering State Treasury agricultural land left over from former State Farms. NASC has an internal spatial information system for analyses of agricultural development and village renewal and revitalization [57,58]. The Centre's employees use data from national geoportals as well as dedicated national map geoportals such as the LPIS (Land Parcel Identification System, managed by the Agency for Restructuring and Modernisation of Agriculture-ARMA), the Geostatistics Portal of the Central Statistical Office (https://geo.stat.gov.pl/), maps of average transaction prices of land developed by the Chief Land Surveyor and foreign Sentinel, which are a series of European space missions of remote sensing nature, the website of the German company GEOFABRIK (download.geofabrik.de/), and the EEA website (eea.europa.eu), which contains a huge amount of spatial data for Member States. In Italy, on the other hand, there are different types of natural hazards present, the increased occurrence of which undoubtedly makes the shape of the crisis management system dependent and different from other countries. The system collects, processes, and analyzes data in order to provide information in geoportals (thematic layers) about seismic phenomena, volcanic activity, and flooding. In addition, the Italian system is distinguished by the detailed scenarios of actions. Both the Italian system of crisis management and the Polish system of agricultural land management are unique in Europe and can be considered examples of good land administration system practices.
On the basis of percentage analysis of functionality and technical aspects (Tables 1 and 2), a percentage synthetic index of quality of geoportals of Poland and Italy was developed. It is presented in Figure 6. the percentage state of functionality and verification of compliance with the ubiquitous contextual information model of public access (UPA) defined by the International Organization for Standardization (ISO) 19100. It is at a similar level of 67.5% in Poland and 63% in Italy. Both geoportals according to the Tilgner scale are of good quality. Each European Union country has a national geoportal. They are very important in the spatial information systems of European cities. As shown in the example of Olsztyn and Bari Geoportals, national geoportals are a source of data and metadata and enable analysis, processing and storage of data. However, City Geoportals have greater functionality because they are used for more tasks. Their interfaces are more user-friendly and have more thematic layers because they are created for a smaller area. Data acquisition is also an important element. Downloading in Geoportals of Cities is very convenient because it allows to download maps and import them to GIS software and assuming georefence of data processing and application of different methods of cartographic presentation [59].
transaction prices of land developed by the Chief Land Surveyor and foreign Sentinel, which are a series of European space missions of remote sensing nature, the website of the German company GEOFABRIK (download.geofabrik.de/), and the EEA website (eea.europa.eu), which contains a huge amount of spatial data for Member States. In Italy, on the other hand, there are different types of natural hazards present, the increased occurrence of which undoubtedly makes the shape of the crisis management system dependent and different from other countries. The system collects, processes, and analyzes data in order to provide information in geoportals (thematic layers) about seismic phenomena, volcanic activity, and flooding. In addition, the Italian system is distinguished by the detailed scenarios of actions. Both the Italian system of crisis management and the Polish system of agricultural land management are unique in Europe and can be considered examples of good land administration system practices.
On the basis of percentage analysis of functionality and technical aspects (Tables 1 and 2), a percentage synthetic index of quality of geoportals of Poland and Italy was developed. It is presented in Figure 6. the percentage state of functionality and verification of compliance with the ubiquitous contextual information model of public access (UPA) defined by the International Organization for Standardization (ISO) 19100. It is at a similar level of 67.5% in Poland and 63% in Italy. Both geoportals according to the Tilgner scale are of good quality. Each European Union country has a national geoportal. They are very important in the spatial information systems of European cities. As shown in the example of Olsztyn and Bari Geoportals, national geoportals are a source of data and metadata and enable analysis, processing and storage of data. However, City Geoportals have greater functionality because they are used for more tasks. Their interfaces are more user-friendly and have more thematic layers because they are created for a smaller area. Data acquisition is also an important element. Downloading in Geoportals of Cities is very convenient because it allows to download maps and import them to GIS software and assuming georefence of data processing and application of different methods of cartographic presentation [59].

Conclusions
The aim of the study was to develop a methodology for comparing the degree of advancement of work on the creation and development of national geoportals. The developed methodology was verified on the example of Italy and Poland. The analysis covered Polish Geoportal 2 and Italian Il Nuovo Visualizzatore-Geoportale Nazionale. The scope of analysis covered organizational, legal and technical solutions, the scope of spatial data and services covered by the system, functionality of individual geoportals, timeliness and availability of data and their compliance with the INSPIRE Directive. As a result of the analyses, it was concluded that the Georpotals are of good quality and further work on their interoperability needs to be done in order to achieve very good status. The matrices developed can be a universal tool for both the comparison of geoportals and their evaluation, as they indicate shortcomings in functionality and compliance with the INSPIRE

Conclusions
The aim of the study was to develop a methodology for comparing the degree of advancement of work on the creation and development of national geoportals. The developed methodology was verified on the example of Italy and Poland. The analysis covered Polish Geoportal 2 and Italian Il Nuovo Visualizzatore-Geoportale Nazionale. The scope of analysis covered organizational, legal and technical solutions, the scope of spatial data and services covered by the system, functionality of individual geoportals, timeliness and availability of data and their compliance with the INSPIRE Directive. As a result of the analyses, it was concluded that the Georpotals are of good quality and further work on their interoperability needs to be done in order to achieve very good status. The matrices developed can be a universal tool for both the comparison of geoportals and their evaluation, as they indicate shortcomings in functionality and compliance with the INSPIRE Directive. Fragmentation, a lack of harmonization, and duplication of data sets, information and sources are the main premises that have led to the establishment of spatial data infrastructure at the European level. To this end, legal empowerment was introduced in both analyzed States, and national geoportals were developed. However, most major cities develop their spatial information systems and provide data and information on maps. The creation of geoportals requires:

•
The creation of laws and executive acts, standards, and guidelines; • The creation of tools for online publication of spatial data services; • The creation of infrastructure, ensuring functioning between data and service providers, preparation of data and services, monitoring of operations, and development of the Geoportal.
A similar research methodology was used by other authors [1,2,[11][12][13][14] who studied geoportals from most European countries. Geoportals are supplemented with new layers, modernized and adapted to the rules, so it is important to analyze them according to a procedure that takes into account the amount of information and functionality to make the results reliable and comparable. Although geoportals should have the same content by design, they do have different thematic maps. This is mainly because the content that is added is mandatory. Not only the type of data but also the quality and timeliness of the data can differ. Unfortunately, there are no relevant regulations governing the timeliness of data. Geoportals often lack data, necessitating redirection to other specialized portals, but this is not easy to find in the site architecture and the interfaces are different. According to Steudler and others [60], there is no internationally recognized methodology for assessing and comparing the effectiveness of land administration systems. However, the authors assume that the quantity and quality of data determine their usefulness. The ISO standard is the basis for the development, implementation, and certification of the Data Quality Management System. The ISO standard contains requirements concerning the system, which are applicable when an organization needs to demonstrate its ability to continuously deliver a product that meets customer requirements.
In Poland, most regions in municipalities and cities have their own portals, and it is difficult to talk about their integration. On the other hand, in Italy, regions in municipalities and cities have integrated portals. In Italy, portals are regional; therefore, the movement of a portal is facilitated, the developed thematic layers for the areas mostly overlap, and through data normalization, integration in GIS software is provided. In Poland, the choice of engines is free, so the data in the portals are different, there are different interfaces, and it is difficult to achieve data integrity.