Opened 9 years ago
Closed 9 years ago
#2705 closed enhancement (invalid)
r.clump maintain original categories
| Reported by: | lucadelu | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | 7.0.4 |
| Component: | Raster | Version: | unspecified |
| Keywords: | r.clump classification | Cc: | |
| CPU: | Unspecified | Platform: | Unspecified |
Description
r.clump should be able to maintain the categories of original raster, this is really useful for classified maps.
An example
i.group group=lsat7_2000 sub=lsat7_2000 in=lsat7_2000_10,lsat7_2000_20,lsat7_2000_30,lsat7_2000_40,lsat7_2000_50,lsat7_2000_61,lsat7_2000_70,lsat7_2000_80 i.cluster group=lsat7_2000 sub=lsat7_2000 signature=cluster_sign classes=5 # the output has 5 classes i.maxlik group=lsat7_2000 sub=lsat7_2000 signaturefile=cluster_sign output=lsat7_2000_maxlik # the output now has something like 21000 classes, it should be able to maintain the 5 original classes r.clump in=lsat7_2000_maxlik out=lsat7_2000_maxlik_clump
Change History (6)
comment:1 by , 9 years ago
comment:6 by , 9 years ago
| Resolution: | → invalid |
|---|---|
| Status: | new → closed |
As there hasn't been any reaction from the OP, and I agree with Maris' remark, I'm taking the freedom to close this bug.
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Sorry, Luca, but I fail to see an use case here. r.clump identifies separate objects in a raster map, thus it is useful only if a new category number is assigned to the new object. Your proposed change would just write out an output map that matches the input map without any changes.