osgeo.gdal.Translate - How to set compression on GDAL GTiff driver

Question

How do I force the use of compression on the GTiff driver when called from osgeo.gdal in Python?

Example on the workflow, which currently reads LZW tiffs and dumps them to uncompressed tiffs.

from osgeo import gdal,gdalconst,osr
translateoptions = gdal.TranslateOptions(rgbExpand='RGB', format='GTiff')
outFile = gdal.Translate(gdaloutput, gdalinput, options=translateoptions)

Would be nice to do this without the use of subprocess.

Environment:

• Python 3.6.6 |Anaconda custom (64-bit)| (default, Jun 28 2018, 11:27:44) [MSC v.1900 64 bit (AMD64)] on win32
• gdal-2.2.2
• libgdal-2.2.2

Answer 1

You have "creationOptions" for this:

translate_options = gdal.TranslateOptions(format = 'GTiff',
                                          creationOptions = ['TFW=YES', 'COMPRESS=LZW']
                                          )

Answer 2

I found the answer in this post.

The post says

GDAL supports three lossless compression algorithms for the GeoTiff format – Packbits, LZW and Deflate.
You can use the compression methods with GDALs creation options.

gdal_translate -of GTiff -co "COMPRESS=LZW" -co "PREDICTOR=2" -co "TILED=YES" uncompressed.tiff LZW-pred2-compressed.tiff

In addition, adding an options argument using drive.Create may be helpful.

driver.Create(utf8_path, xsize, ysize, bands, data_type, options=['COMPRESS=LZW'])

Answer 3

Thanks fenfen123. I ended up using the following approach via the GDAL python api:

# Write new tiffs with RGB palette
gdalinput = tile+'.tif'
gdaloutput = oFolder+'\\'+Path(tile).name+'.tif'    
translateoptions = gdal.TranslateOptions(gdal.ParseCommandLine("-of Gtiff -co COMPRESS=LZW"))
gdal.Translate(gdaloutput, gdalinput, options=translateoptions)