Feature request #9043
"No data" in multi-band data
| Status: | Open | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: | - | ||
| Category: | Rasters | ||
| Pull Request or Patch supplied: | No | Resolution: | |
| Easy fix?: | No | Copied to github as #: | 17697 |
Description
I'm going to put this as a "feature request" though it might be considered a bug.
I have three band raster data. On the "transparency" page I've set "0" to be "no data". The problem is, if even one of the three bands has a "0", QGIS renders the entire pixel as being "no data". As such I get entire fields filled with "no data" speckles because a single band (red) is often 0.
I'd suggest allowing the user to set "no data" on a per-band basis or requiring that all symbolised pixels be no data before rendering as no-data.
History
#1
Updated by Martin Dobias over 9 years ago
Isn't it sufficient to setup custom transparency pixel list in the Transparency tab? It is possible to choose which colors (R,G,B) should be transparent.
#2
Updated by Jonathan Moules over 9 years ago
I didn't know about that. But seeing it now, what's the point of having the "no data value" option at all?
#3
Updated by Etienne Tourigny over 9 years ago
Individual raster bands have a nodata value, so it's a simple way to mask them.
#4
Updated by Paolo Cavallini over 9 years ago
- Category set to Rasters
#5
Updated by Giovanni Manghi over 6 years ago
- Easy fix? set to No