Bug report #7516
GRASS Raster: NoData shown with colour of lowest class
Status: | Closed | ||
---|---|---|---|
Priority: | Normal | ||
Assignee: | - | ||
Category: | GRASS | ||
Affected QGIS version: | master | Regression?: | No |
Operating System: | Windows XP | Easy fix?: | No |
Pull Request or Patch supplied: | No | Resolution: | worksforme |
Crashes QGIS or corrupts data: | No | Copied to github as #: | 16465 |
Description
I used OSGEO4W QGIS-dev installed on 03.04.2012
Private follow up on topic:
http://thread.gmane.org/gmane.comp.gis.qgis.user/21298/focus=21314
> I have loaded a GRASS raster directly by opening the mapset. > > In GRASS maps itself the NoData, i.e. null(), cells are left transparet. > > In QGis these are shown with the colour of the most inferior class. No data values should be transparent by default. If not, it is a bug, please fill a new bug report. > How can I get them to be transparent? > > In the transparency settings (next tab in properties dialogue), only > numerical values are allowed for the NoData field. No data values are represented internally by a numerical value, you can try to find the no data value (in general tab) and use it in transparency but that is just a workaround. Do you see a no data value in "No data value" group box in transparency tab? Is it checked? What identify tool says for your no data pixels? > A similar dicusssion: > > http://osgeo-org.1560.n6.nabble.com/No-data-value-in-raster-transparency-list-td4997078.html
History
#1 Updated by timmie - over 11 years ago
Do you see a no data value in "No data value" group box in transparency tab?
No, it's empty
Is it checked?
No, greyed out. -> I cannot check it.
What identify tool says for your no data pixels?
Empty Value (Leerwert)
#2 Updated by Giovanni Manghi over 11 years ago
- Status changed from Open to Feedback
grass rasters no data values are transparent here on qgis master, can you attach a sample dataset?
#3 Updated by Giovanni Manghi almost 10 years ago
- Resolution set to worksforme
- Status changed from Feedback to Closed
closing for lack of feedback, please reopen if necessary.