nsw_merge_dems
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| nsw_merge_dems [2021/02/10 14:30] – created bushwalking | nsw_merge_dems [2023/10/24 08:05] (current) – Change to .tif files bushwalking | ||
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| ====== Merging DEMs ====== | ====== Merging DEMs ====== | ||
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| + | ===== NSW DEMs ===== | ||
| The NSW DEM data is supplied in 2km squares. The squares need to be merged into a single DEM for further operations. | The NSW DEM data is supplied in 2km squares. The squares need to be merged into a single DEM for further operations. | ||
| Most of the eastern ranges, where a lot of bushwalking happens, are 2m resolution DEMs. The coast is typically 1m, and the western slopes and plains are 5m (with areas around major rivers 1m!). Be careful if you need to merge DEMs with different resolutions - see below for more details. | Most of the eastern ranges, where a lot of bushwalking happens, are 2m resolution DEMs. The coast is typically 1m, and the western slopes and plains are 5m (with areas around major rivers 1m!). Be careful if you need to merge DEMs with different resolutions - see below for more details. | ||
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| + | The data comes as zipped .TIF files, with separate folders by resolution (1m/2m/5m). The .TIF files can then be dragged and dropped into QGIS. | ||
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| + | [Previously the data came as doubly zipped .ASC files, so the individual zip files needed to be extracted to a folder, and then unzipped themselves.] | ||
| ===== Merge Raster ===== | ===== Merge Raster ===== | ||
nsw_merge_dems.1612927858.txt.gz · Last modified: 2021/02/10 14:30 by bushwalking