GIS and Cartography Workgroup

Digital Map of Poland

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Digital Map of Poland is a set of cartographic layers that serve for map editing. The spatial coverage is the whole area of Poland and adjacent parts of the neighbouring countries, at a nominal scale 1:200,000. The accuracy is suitable for paper maps at the same scale, whereas for the purposes of computer use a scale 1:100,000 can be obtained.

All the data is stored in geographic coordinates based on the WGS-84 ellipsoid. The coverage is continuous, allowing for presentation of the whole country or its parts in any given projection. Also, as far as possible, single map objects are continuous, that is not divided into fragments or “tiles”, with the exception of huge objects in landcover and contourlines layers.

The quality of our data has been thoroughly verified in the course of big edition map production, involving editorial work, revisors and readers' contributions.

Settlement points are distinguished, identified and named in accordance with the TERYT system, and thus in harmony with the official geographical names.

Rivercourses are identified with hierarchical code, describing location in drainage system. Four additional rivercourse layers exist to improve graphical effect with graduations.

Roads include all sealed and most of unsealed roads significant for transportation network. Segments are described with official national number and categorized into 14 classes. Division into segments not necessarily is concurrent with intersections.

Hipsometry layer consists of 58 classes of closed contour areas (suitable for colour fill). Intervals are 20m up to 400, 40 m up to 800, 50m up to 1600, 100m up to 2600. Nominal scale is appx. 1:300-400.000.

Landmark/Sightseeing layer includes 98 categories of objects significant for cultural heritage and tourism. Also included are border crossings, petrol stations (now outdated) and traffic hazard points.

 

Layer	Spatial type	No. objects	No. patches	Total length [km]	Resolution* [km]
Rivercourses	line	15 500		154 100	0.18
Lakes	area	11 100			0.11
Wetlands	area		5 400		0.29
Dikes	line	1 688
Tamy	line	134
Forests	area		40 800		0.27
Meadows	area		25 700		0.19
Orchards	area		3 300		0.25
Contourlines	area		60 200		0.27
Height points	point	1 248
Built-up area	area		84 900		0.25
Disparsed settlements	area	314 000			0.096
Named settlement locations	point	43 800
Roads	line	121 400		333 000	0.27
Railroads	line	800		29 200
1st order administrative units (voivodships)	area	16
2nd order administrative units (powiaty)	area	436
3rd order administrative units (gminy)	area	3 059
Landmark/Sightseeing objects	point	38 800

^* Average inter-node distance along line gives scale-independent approximation of how detailed the shapes are

The Map is a result of several projects carried out by the Department of Cartography and Geographical Information System. Its first version, at that time at the scale 1:500, 000 was elaborated for the purposes of the Digital Atlas of Poland, and the next one for the Road Map at the scale 1:300,000. The most significant progress, in terms of quantity and quality was made during elaboration of Road Map at the scale of 1:200,000, the base material of which consisted of map extracts from topographic maps at the scale 1:50,000, made by highly qualified cartographers. The whole of material was digitalized in AVISO system.