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Extracting single band from multiple band raster with PyQGIS?

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0

I'm approaching naw in the script and I'm trying to select many multi-band files from a folder and extract a single band from the file, putting everything in an output folder with the single-band transformed files.

Currently I concluded the following script:

 import sys, os



 output = "C:/../folder"



 layers =[layer for layer in QgsProject.instance().mapLayers().values()]





 for lyr in layers:

    if (lyr.type()==QgsMapLayer.RasterLayer): 



    cmd1 = "gdal_translate -b 1 "+ lyr.source() + "C:/..raster_input" + outputDir + "C:..output" + lyr.name() + "test.ecw" 



    os.system(cmd1)



    cmd2 = outputDir + "C:..output" + lyr.name() + "test.ecw"



    iface.addRasterLayer(cmd2)

But it does not work!

pyqgis gdal extract multi-band

share|improve this question

edited 7 mins ago

PolyGeo♦

53.6k1780240

asked 2 hours ago

vins_26vins_26

113

New contributor

vins_26 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

0

I'm approaching naw in the script and I'm trying to select many multi-band files from a folder and extract a single band from the file, putting everything in an output folder with the single-band transformed files.

Currently I concluded the following script:

 import sys, os



 output = "C:/../folder"



 layers =[layer for layer in QgsProject.instance().mapLayers().values()]





 for lyr in layers:

    if (lyr.type()==QgsMapLayer.RasterLayer): 



    cmd1 = "gdal_translate -b 1 "+ lyr.source() + "C:/..raster_input" + outputDir + "C:..output" + lyr.name() + "test.ecw" 



    os.system(cmd1)



    cmd2 = outputDir + "C:..output" + lyr.name() + "test.ecw"



    iface.addRasterLayer(cmd2)

But it does not work!

pyqgis gdal extract multi-band

share|improve this question

edited 7 mins ago

PolyGeo♦

53.6k1780240

asked 2 hours ago

vins_26vins_26

113

New contributor

vins_26 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

I'm approaching naw in the script and I'm trying to select many multi-band files from a folder and extract a single band from the file, putting everything in an output folder with the single-band transformed files.

Currently I concluded the following script:

 import sys, os



 output = "C:/../folder"



 layers =[layer for layer in QgsProject.instance().mapLayers().values()]





 for lyr in layers:

    if (lyr.type()==QgsMapLayer.RasterLayer): 



    cmd1 = "gdal_translate -b 1 "+ lyr.source() + "C:/..raster_input" + outputDir + "C:..output" + lyr.name() + "test.ecw" 



    os.system(cmd1)



    cmd2 = outputDir + "C:..output" + lyr.name() + "test.ecw"



    iface.addRasterLayer(cmd2)

But it does not work!

pyqgis gdal extract multi-band

share|improve this question

edited 7 mins ago

PolyGeo♦

53.6k1780240

asked 2 hours ago

vins_26vins_26

113

New contributor

vins_26 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

 import sys, os



 output = "C:/../folder"



 layers =[layer for layer in QgsProject.instance().mapLayers().values()]





 for lyr in layers:

    if (lyr.type()==QgsMapLayer.RasterLayer): 



    cmd1 = "gdal_translate -b 1 "+ lyr.source() + "C:/..raster_input" + outputDir + "C:..output" + lyr.name() + "test.ecw" 



    os.system(cmd1)



    cmd2 = outputDir + "C:..output" + lyr.name() + "test.ecw"



    iface.addRasterLayer(cmd2)

share|improve this question

edited 7 mins ago

PolyGeo♦

53.6k1780240

asked 2 hours ago

vins_26vins_26

113

New contributor

vins_26 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 7 mins ago

PolyGeo♦

53.6k1780240

asked 2 hours ago

vins_26vins_26

113

New contributor

vins_26 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

edited 7 mins ago

PolyGeo♦

53.6k1780240

edited 7 mins ago

PolyGeo♦

53.6k1780240

asked 2 hours ago

vins_26vins_26

113

New contributor

vins_26 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 2 hours ago

vins_26vins_26

113