Raster Format Conversion Using gdal translate: Difference between revisions

Content deleted Content added

Revision as of 01:38, 12 April 2022 view source Ellis Symons (talk \| contribs) Bureaucrats, Administrators 3,098 edits →Assigning a Projection ← Older edit		Latest revision as of 20:20, 15 November 2024 view source Ellis Symons (talk \| contribs) Bureaucrats, Administrators 3,098 edits No edit summary
(6 intermediate revisions by one other user not shown)
Line 33: :* ''<tt>-a_srs <srs_def></tt>'': Override the projection of the output file (no transformations performed). Srs_def can be an EPSG or WKT CRS definition. <pre>gdal_translate.exe -of GTiff -a_srs "EPSG:32760" DEM_M01_5m.asc DEM_M01_5m.tif</pre> ==Cloud Optimised GeoTIFFs== <br> Cloud Optimised GeoTIFFs (COGs) are a format of GeoTIFF which are set up to allow easy storage and distribution via the Cloud. The GeoTIFFs are formatted slightly differently with internal tiling, overviews and compression which makes it easier to access and download parts of the data corresponding to the particular study area of interest, without the requirement to download the entire file first. COGs aren't currently supported by the 2023 version of TUFLOW. Currently they would need to be converted using gdal translate.<Br> '''COG to GeoTIFF'''<Br> <pre>gdal_translate.exe -of GTiff DEM_M01_5m_COG.tif DEM_M01_5m.tif</pre> You can also do the conversion with the compression options described '''<u>[[Raster_Format_Conversion_Using_gdal_translate#Adding_Compression_To_GeoTIFF \| above]]</u>'''. ==Converting To/From GPKG==