[GRASS-user] Retrieving Vector Point Screen Coordinates

Robert Shedd Robert.Shedd at noaa.gov
Fri Aug 22 10:42:55 EDT 2008

That is close to what I need, but v.report YOURMAP option=coor reports 
the coordinates in lat-long coordinates.  I am trying to find the x-y 
location where those lat-long coordinates actually plot on the output 
image relative to the top left or bottom left corner of the graphic.

Nikos Alexandris wrote:
> On Fri, 2008-08-22 at 07:09 -0400, Robert Shedd wrote:
>> I am currently working on a project that it would be helpful to be able 
>> to retrieve the x-y coordinates of a set of vector points.  I am 
>> generating the map display in a script so interactive features (such as 
>> available with d.where) will not work.
>> My current basic script is essentially the following:
>> export GRASS_WIDTH=800
>> export GRASS_HEIGHT=600
>> d.mon start=PNG
>> d.vect  map="pointvector" type="point" icon="basic/box" size=10 lcolor="black" fcolor="green"
>> d.mon stop=PNG
>> I am looking to find where each of the points in pointvector plots within the 800x600 png file.
> Hi!
> Something like "v.report YOURMAP option=coor"? Maybe I do not understand
> the problem exactly.
> Nikos
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