NVIZ fails to display all points in a point vector map
|Reported by:||tvrusso||Owned by:|
|Keywords:||NVIZ, display, points||Cc:|
I observed some strange behavior in NVIZ while trying to work through examples in the 3rd edition of "Open Source GIS: A GRASS GIS Approach" by Markus Neteler and Helena Mitasova.
- download the nc_spm_06 GRASS location from http://www.grassbook.org/ under the Data Sets link for 3rd edition
- Start GRASS with that location and run the command given in Chapter 3.1, First Steps, on page 33: g.region rast=elevation nviz elev=elevation vect=streams,roadsmajor, point=overpasses
When I run the last command, only a single overpass point is displayed. See first attached screenshot, where a single red sphere is visible.
However, if I change the region slightly, say by expanding it five meters in all directions:
g.region -p g.region n=228505 s=214995 e=645005 w=629995 nviz elev=elevation vect=streams,roadsmajor, point=overpasses
I then see all the points as they should have been, as displayed in second screenshot, where multiple points are visible.
This is with GRASS SVN checked out this morning (and was present in SVN for at least the last week, probably longer but this is the first time I checked).