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export Hillshade to jpg or tiff

Posted: Thu May 19, 2016 9:51 am
by ombeline
Hi Daniel,

I want to export the layer Hillshade in jpg or tiff , but I don't find the process.
Export tab does not allow export hillshade in image format and raster format does not provide the expecting result.

Thank you very much

Ombeline

Re: export Hillshade to jpg or tiff

Posted: Thu May 19, 2016 7:42 pm
by daniel
Hi Ombeline,

You are right, the hillshade information is brand new and you can't export it to a raster / image yet. In fact I realize that you can't export the RGB field as an image either (that's a bit silly).

Actually the only solution to save the hillshade info to a raster file (geotiff) is a bit tricky ;) :
- first compute the hillshade and export the grid as a cloud
- this cloud will have a 'hillshade' scalar field (should be displayed by default)
- depending on what you want to do with this layer:
* either you can convert this SF to RGB colors (Edit > SF > Convert to RGB)
* or rename this scalar field with anything you want but not 'hillshade' (Edit > SF > Rename)
- restart the Raster tool on this cloud
- the former 'hillshade' SF (with its new name) or the RGB colors will now appear in the 'active layer' list and you'll be able to export it as a raster file.

Re: export Hillshade to jpg or tiff

Posted: Fri May 20, 2016 8:58 am
by ombeline
Thank you Daniel

I try your solution but I can't open the raster. I try with irfanview and gimp. Irfanview says invalid or unsupported tiff and gimp doesn't display the raster. However the created file weighs more than 50 000ko.

Ombeline

Re: export Hillshade to jpg or tiff

Posted: Fri May 20, 2016 11:18 am
by daniel
Yes geotiff can only be opened by GIS software (ArcGIS, etc.).

I should definitely update CC so as to be able to output standard image with this information.

Re: export Hillshade to jpg or tiff

Posted: Mon May 23, 2016 9:07 am
by ombeline
Thank you Daniel !