gdalwarp cutline along with shapefile

Question

I am trying to clip my Raster file according to a shapefile geometry. I am using the following code

gdalwarp -cutline INPUT.shp INPUT.tif OUTPUT.tif

But it is resulting a black color outside the shapefile geometry extent. I am giving the example here. In the first Image that I want to clip. The second image is the resultant raster but I want the 3rd Raster where the outside of the geometry will be null.

1st Image: INPUT Raster

2nd Image: OUTPUT Raster

enter image description here

3rd Image: I want to get output like this

score 51 · Accepted Answer · answered Mar 13 '14 at 09:33

51

You need to use the -dstalpha option to gdalwarp e.g.:

gdalwarp -cutline INPUT.shp -crop_to_cutline -dstalpha INPUT.tif OUTPUT.tif

This will add an alpha band to the output tiff which masks out the area falling outside the cutline.

A late answer, but hopefully it will help someone else with the same problem.

answered Mar 13 '14 at 09:33

Homme Zwaagstra

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without the -srcnodata -dstnodata hint by Curlew it did not work for me. – Jens Jun 04 '14 at 19:33
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Well, -dstalpha is OK to use with imagery (it basically adds an alpha Band in GeoTIFF and mask the area). However, data values remains in the source Band (in this case I guess, that it is value 0). If you want to work with this as raster values (not imagery), -dstalpha is WRONG approach.@Curlew answer is much preferable option. Also, I found -crop_to_cutline option very dangerous, if you need to keep exact overlay (pixel-size and spacing) with the input raster. I prefer to set -te options (bounding box) to keep coordinates under full control. – jurajb Oct 02 '18 at 07:37
gdalwarp -cutline Eastcoast.shp -crop_to_cutline -dstalpha "myrasterfinal77.tif" "demUTM12.tif"
Getting invalid syntax
– sameer_nubia Oct 20 '20 at 11:45

score 29 · Answer 2 · answered Jan 02 '13 at 17:50

29

Try to specify the nodata-value from your input raster and set it for the output as well. Furthermore add the option -crop_to_cutline to make exact crops. More about the options here.

gdalwarp -srcnodata <in> -dstnodata <out> -crop_to_cutline -cutline INPUT.shp INPUT.tif OUTPUT.tif

answered Jan 02 '13 at 17:50

Curlew

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Can You elaborate little bit more? What is used as and ? – Devils Dream Jan 02 '13 at 19:02
is your input rasters nodata-value and for your output-raster. Please have a look at the provided link where you can find all information and options (output format, source, extent, ... ) – Curlew Jan 02 '13 at 23:15
I am getting invalid syntax, can u help me with this
gdalwarp -srcnodata "myrasterfinal77.tif" -dstnodata "demUTM12.tif" -crop_to_cutline -cutline "Eastcoast.shp" "myrasterfinal77.tif" "demUTM12.tif"
– sameer_nubia Oct 20 '20 at 11:43

score 2 · Answer 3 · edited Feb 02 '18 at 17:15

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You can use raster clip option in QGIS which runs gdalwarp in the background and configures the right options for you.

http://www.qgistutorials.com/en/docs/raster_mosaicing_and_clipping.html

edited Feb 02 '18 at 17:15

Dan C

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answered Jan 02 '13 at 18:23

spatialthoughts

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I want a ***.tif format – Devils Dream Jan 02 '13 at 19:18
The steps outlined in the link above should give you a .tif output. – spatialthoughts Jan 02 '13 at 20:01
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The link seems dead. – Vadim Ovchinnikov Oct 09 '17 at 17:10
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@VadimOvchinnikov browsed a bit and found where it was moved, fixed it – DarkCygnus Feb 02 '18 at 16:51

gdalwarp cutline along with shapefile

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