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docs: add a note that the table may now be out-of-date
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| # Other countries DEM/DSM publication | ||
| # Other Countries DEM/DSM Publication | ||
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| Before making recommendations on how to standardise New Zealand's DEM/DSM data LINZ took a brief look at other jurisdictions and how they standardised their DEM and DSM | ||
| Before making recommendations on how to standardise New Zealand's DEM/DSM data, LINZ took a brief look at other jurisdictions and how they standardised their DEMs and/or DSMs. | ||
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| The key areas to look at were | ||
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| - compression - What lossless compression was most common | ||
| - compression - what lossless compression was most common | ||
| - size - width and height of image | ||
| - file size - how big each tile is | ||
| - storage type (Tiff/COG/other) | ||
| - storage type (TIFF/COG/other) | ||
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| | Country | Name | Dimensions | File SIze | Type | Compression | DataType | Nodata | CRS | PixelIsPoint | Comments | | ||
| | Country | Name | Dimensions (px) | File SIze | Type | Compression | DataType | Nodata | CRS | PixelIsPoint | Comments | | ||
| | :---------- | :----------------------------------------------------------------------------------------------------------- | :---------------------: | --------- | ------------- | ---------------- | -------- | ------- | ---------- | ------------ | -------- | | ||
| | New Zealand | [National Elevation 1m DEM](https://data.linz.govt.nz/group/national-elevation/data/) | 480x720 px | 1.4MB | GeoTiff | LZW | Float32 | -9999 | EPSG:2193 | Area/Point | | | ||
| | Switzerland | [swissSURFACE3D Raster (50cm)](https://www.swisstopo.admin.ch/en/geodata/height/surface3d-raster.html) | 2,000x2,000 px | 16MB | GeoTiff (COG) | LZW | Float32 | -9999 | EPSG:2056 | Area | | | ||
| | USA - USGS | [National Map 3DEP](http://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/1m/Projects/) | 10,012x10,012 px | 280MB | GeoTiff (COG) | LZW (predictor3) | Float32 | -999999 | EPSG:26910 | Area | | | ||
| | USA - NOAA | [NOAA Digital Coast LiDAR](https://coast.noaa.gov/dataviewer/#/lidar/search/) | 8,463x6,475 px | 189NB | GeoTiff | LZW | Float32 | -999999 | EPSG:2229 | | In Feet | | ||
| | Australia | [Victoria 50cm DEM](https://elevation.fsdf.org.au/) | 10,000x10,000<br>Varies | 4MB | GeoTiff (COG) | LZW | Float32 | -9999 | EPSG:7855 | | | | ||
| | Finland | [2M DEM](https://asiointi.maanmittauslaitos.fi/karttapaikka/tilausvahvistus) | 3,000x3,000 px | 20MB | GeoTiff | LZW | Float32 | -9999 | EPSG:3067 | | | | ||
| | Canada | [HRDEM - CanElevation Series](https://open.canada.ca/data/en/dataset/957782bf-847c-4644-a757-e383c0057995) | 10,000x10,000 | | GeoTiff | LZW | Float32 | -32767 | EPSG:2958 | | | | ||
| | Norway | [Norway DTM1](https://hoydedata.no/LaserInnsyn2/) | 15,010x15,010 | | GeoTiff | LZW | | | | | | | ||
| | New Zealand | [National Elevation 1m DEM](https://data.linz.govt.nz/group/national-elevation/data/) | 480x720 | 1.4MB | GeoTIFF | LZW | Float32 | -9999 | EPSG:2193 | Area/Point | | | ||
| | Switzerland | [swissSURFACE3D Raster (50cm)](https://www.swisstopo.admin.ch/en/geodata/height/surface3d-raster.html) | 2,000x2,000 | 16MB | GeoTIFF (COG) | LZW | Float32 | -9999 | EPSG:2056 | Area | | | ||
| | USA - USGS | [National Map 3DEP](http://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/1m/Projects/) | 10,012x10,012 | 280MB | GeoTIFF (COG) | LZW (predictor3) | Float32 | -999999 | EPSG:26910 | Area | | | ||
| | USA - NOAA | [NOAA Digital Coast LiDAR](https://coast.noaa.gov/dataviewer/#/lidar/search/) | 8,463x6,475 | 189NB | GeoTIFF | LZW | Float32 | -999999 | EPSG:2229 | | In Feet | | ||
| | Australia | [Victoria 50cm DEM](https://elevation.fsdf.org.au/) | 10,000x10,000<br>Varies | 4MB | GeoTIFF (COG) | LZW | Float32 | -9999 | EPSG:7855 | | | | ||
| | Finland | [2M DEM](https://asiointi.maanmittauslaitos.fi/karttapaikka/tilausvahvistus) | 3,000x3,000 | 20MB | GeoTIFF | LZW | Float32 | -9999 | EPSG:3067 | | | | ||
| | Canada | [HRDEM - CanElevation Series](https://open.canada.ca/data/en/dataset/957782bf-847c-4644-a757-e383c0057995) | 10,000x10,000 | | GeoTIFF | LZW | Float32 | -32767 | EPSG:2958 | | | | ||
| | Norway | [Norway DTM1](https://hoydedata.no/LaserInnsyn2/) | 15,010x15,010 | | GeoTIFF | LZW | | | | | | | ||
| | France | [RGE ALTI 1m](https://geoservices.ign.fr/rgealti) | 1,000x1,000 | | Ascii Grid | | | | | | | | ||
| | Netherlands | [Actueel Hoogtebestand Nederland AHN3](https://app.pdok.nl/rws/ahn3/download-page/) | 10,000x12,500 | | GeoTiff | RAW (Zipped) | | 3.4e+38 | EPSG:28992 | | | | ||
| | Scotland | [LiDAR for Scotland DTM](https://remotesensingdata.gov.scot/data#/list) | 10,000x6,000 | 132MB | GeoTiff | LZW | | -9999 | EPSG:27700 | Area | | | ||
| | Netherlands | [Actueel Hoogtebestand Nederland AHN3](https://app.pdok.nl/rws/ahn3/download-page/) | 10,000x12,500 | | GeoTIFF | RAW (Zipped) | | 3.4e+38 | EPSG:28992 | | | | ||
| | Scotland | [LiDAR for Scotland DTM](https://remotesensingdata.gov.scot/data#/list) | 10,000x6,000 | 132MB | GeoTIFF | LZW | | -9999 | EPSG:27700 | Area | | | ||
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| Elvis - Elevation and Depth - Foundation Spatial Data | ||
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| https://asiointi.maanmittauslaitos.fi/karttapaikka/tilausvahvistus | ||
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| File Tested | ||
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| Scotland - NN70_1M_DSM_PHASE1.tif | ||
| This table was recorded in May 2023 and may now be out-of-date. |