[GRASS-dev] [GRASS GIS] #778: i.rgb.his, i.his.rgb: propagate NULLs
GRASS GIS
trac at osgeo.org
Mon Jun 25 09:58:47 PDT 2012
#778: i.rgb.his, i.his.rgb: propagate NULLs
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Reporter: hamish | Owner: grass-dev@…
Type: defect | Status: new
Priority: major | Milestone: 7.0.0
Component: Raster | Version: svn-trunk
Keywords: i.rgb.his, i.his.rgb | Platform: All
Cpu: Unspecified |
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Changes (by cmbarton):
* priority: minor => major
Comment:
This remains a serious hidden bug. At the very least, it should be
documented in the manuals for these routines. Especially for remote
sensing imagery, 0 is a meaningful value. To mix 0's with nulls is to
corrupt the information in the image. Because of the potential for data
corruption and because it is an undocumented behavior that differers from
most (all?) other raster modules, I'm also upping the priority to major.
Note that because neither i.rgb.his or i.his.rgb deal with nulls
correctly, they cannot be used with a MASK.
Is this difficult to fix?
Michael
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Ticket URL: <https://trac.osgeo.org/grass/ticket/778#comment:1>
GRASS GIS <http://grass.osgeo.org>
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