geocat.ch
DHM25 Matrixmodell
The digital height model DHM25 is a data set representing the three-dimensional form of the earth's surface. It was derived from the height information of the Swiss National Map 1:25'000 and 1:50'000 for the extended perimeter. The matrix model is a height matrix with a 25-m grid. It is derived from the basis model through interpolation. The number of height values per area is constant (1600 values per km2). Since the coordinates x and y are implicitly given by the matrix structure, only the height value z is stored with each point. The height values correspond to the corners of the matrix and therefore do not represent the mean height of the matrix cell. Lakes are represented by their surface. No additional information concerning the use of the terrain is stored in the matrix model. The DHM25 represents the topography of the earth's surface without vegetation or built up areas.
Simple
Identification info
- Alternate title
-
DHM25
- Date (Creation)
- 2001-06-15
- Status
- Completed
Point of contact
Responsible party
- Organisation name
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Federal Office of Topography swisstopo
- Position name
-
Geodata Distribution
- Voice
-
+41 58 469 01 11
- Facsimile
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+41 58 469 04 59
Address
- City
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Wabern
- Postal code
-
3084
- Country
-
CH
- Electronic mail address
- Streetname
-
Seftigenstrasse
- Streetnumber
-
264
- Protocol
-
WWW:LINK
- Role
- Point of contact
- Last Name
-
geodata
- Organisation Acronym
-
swisstopo
- Maintenance and update frequency
- Not planned
- Maintenance note
-
Der Nachführungsstand der Elemente des Basismodells entspricht demjenigen der Ersterfassung, mit Ausnahme der Gletschergebiete, welche gemäss dem im Winter 2000/2001 verfügbaren Kartenstand nachgeführt sind.
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geocat.ch
-
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terrain representation
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hillshade
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digital terrain model DTM
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GIS (Geographic Information System)
-
contour in lakes
-
topography
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contour line
-
3D visualisation
-
isophysis
-
geodata
-
DEM (digital elevation model)
-
spot height
-
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GEMET - INSPIRE themes, version 1.0
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Elevation
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GEMET
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relief (land)
-
- Use constraints
- License
- Spatial representation type
- Grid
- Distance
- 25 m
- Language
- Deutsch
- Character set
- UTF8
- Topic category
-
- C Elevation
Extent
- Description
-
DHM25
))
- Geographic identifier
- DHM25
- Supplemental Information
-
Bei reduzierten Ansprüchen an die Genauigkeit können auch ausgedünnte Matrizen aus der Originalmatrix extrahiert werden. Diese Extraktion ist eine Selektion, so dass auch in diesem Falle die Eckhöhen der Matrixzellen wiedergegeben werden und nicht deren mittlere Höhe. Derart ausgedünnte Matrizen werden mit DHM25/50, DHM25/100 oder DHM25/200 bezeichnet (andere Maschenweiten sinngemäss).
- Revision Scope
- Dataset
- Distribution format
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ESRI Arcinfo ASCII GRID (ASC)
()
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GRID ASCII (XYZ)
()
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AutoCAD DXF (DXF)
()
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ESRI Arcinfo ASCII GRID (ASC)
()
- OnLine resource
- MNT25 ( WWW:LINK )
- OnLine resource
- Shop ( WWW:DOWNLOAD-URL )
- OnLine resource
- map.geo.admin.ch ( CHTOPO:specialised-geoportal )
- Hierarchy level
- Dataset
- Statement
-
Interpolation aus der Höheninformation der Landeskarte 1:25'000 abgeleitet, der Landeskarte 1:50'000 im erweiterten Perimeter.
- Reference system identifier
- EPSG:21781
- Reference system identifier
- EPSG:5728
Content Information
- Attribute description
- Elevation
- Content type
- Physical measurement
Content Information
- Compliance code
- Metadata language
- Deutsch
- Metadata language
- Français
- Included with dataset
- Date (Revision)
- 2004-06-01
- Model type
- Feature description
Metadata
- Metadata language
- Deutsch
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2022-05-13T09:18:16
- Metadata standard name
-
GM03 2+
Metadata author
Responsible party
- Organisation name
-
Federal Office of Topography swisstopo
- Position name
-
Metadata contact
- Voice
-
+41 58 469 01 11
Address
- City
-
Wabern
- Postal code
-
3084
- Country
-
CH
- Electronic mail address
- Streetname
-
Seftigenstrasse
- Streetnumber
-
264
- Protocol
-
WWW:LINK
- Hours of service
-
08h30 - 11h00 / 14h00 - 16h00 GMT+1
- Role
- Point of contact
- Last Name
-
metadata
- Organisation Acronym
-
swisstopo
- Maintenance and update frequency
- As needed
- Date of next update
- 2005-12-31
