How to split a raster into smaller chunks?
Disclaimer aside, here’s a script that will use gdalwarp to split up a raster into several smaller tiles. There might be some loss due to the floor division but this can be taken care of by picking the number of tiles you want. It will be n+1 where n is the number you divide by to get the tile_width and tile_height variables.
How to split raster in ArcGIS for desktop?
If a tile already exists (if there is a file with the same name), then it will not be overwritten. If a tile only contains NoData pixel values, then it will not be created. The raster to split. The destination for the new raster datasets. The prefix for each of the raster datasets you will create.
How to split a raster layer in Python?
Starting from a raster layer, the goal for this task is to split it in several tiles for further processing. We can do this task by directly using QGIS, or even with Python ( GDAL ). More in detail, we want to split a 5×5 m raster layer (see image below) having 500 columns and 700 rows.
Can a tile be overwritten in Split raster?
If a tile already exists (if there is a file with the same name), then it will not be overwritten. If a tile only contains NoData pixel values, then it will not be created. The raster to split.
How to split raster in several tiles using QGIS or…?
Press the OK button. The using of the parameters in the above dialog will lead to the creation of the tiles in the specified folder: The same result could be obtained with the using of GDAL ( gdal_translate ). With reference to the same parameters, we may use this script:
How to split a large GeoTIFF into smaller regions?
I have quite a large GeoTIFF-file (compressed 50MB but unpacked 6GB) and want to split it into several smaller regional files. I am using Python, and as I am a new GDAL user I do not really have an idea how to start. Is gdalwarp ChunkAndWarpImage the function I am looking for? And how do I apply it in Python? Can I or must I define the region size?