[GRASS-dev] [GRASS GIS] #3335: v.to.rast with label_column set results in raster with part of raster cells without label

[GRASS GIS]

#3335: v.to.rast with label_column set results in raster with part of raster cells
without label
-------------------------+-------------------------
 Reporter:  pvanbosgeo   |      Owner:  grass-dev@…
     Type:  defect       |     Status:  new
 Priority:  normal       |  Milestone:  7.2.1
Component:  Default      |    Version:  unspecified
 Keywords:               |        CPU:  Unspecified
 Platform:  Unspecified  |
-------------------------+-------------------------
 Converting a vector to raster does in some specific cases yields yields
 issues with the labeling. E.g., the following (using the NC dataset)
 results in a layer with each raster cells assigned a category label (the
 name of the municipality):


 {{{
 v.to.rast input=boundary_municp output=A01 use=attr
 attribute_column=OBJECTID label_column=MB_NAME type=area
 }}}


 Running the following will give a raster in which a portion of the cells
 do not have a label.


 {{{
 v.extract input=boundary_county where="NAME='WAKE'" output=WakeCounty
 v.overlay ainput=boundary_municp binput=WakeCounty operator=and
 output=WakeMunicp olayer=0,1,0
 g.region vector=WakeMunicp res=100 -a
 v.to.rast input=WakeMunicp output=A02 use=attr attribute_column=OBJECTID
 label_column=MB_NAME type=area
 }}}

 or:

 {{{
 v.extract input=boundary_municp where="COUNTY='WAKE'" output=WakeMunicp2
 g.region vector=WakeMunicp2 res=100 -a
 v.to.rast input=WakeMunicp2 output=A03 use=attr attribute_column=OBJECTID
 label_column=MB_NAME type=area
 }}}

 Same results, some of the raster cells do not get a label.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3335>
GRASS GIS <https://grass.osgeo.org>