[Gvsig_english] computing X,Y coordinates

[Sergio Clark]

Hi Nik,

It's possible to get X and Y coordinates of a shape, if it is type 
point. You can do this by using the Field Calculator in gvSIG. First, 
'start editing' your shp, then open its table and add numeric fields for 
X and Y values. With this field selected in the table click 'Field 
calculator' and use functions 'x' and 'y' to get these values.

But if you mean getting the X,Y coordinates of a centroid (for a polygon 
shape), you should write a jython script and then use the 'Advanced' 
label of the Field Calculator in order to load and use it (I don't know 
the exact code for this script now).


Hope it helps,
Regards

Sergio.




Nik Go escribió:
> Hi everyone.
>
> I'm trying to find out if I can retrieve the X,Y coordinates of my 
> shape features (perhaps, it's center?)  Arcview can do something like 
> this: HowTo:  Calculate Latitude and Longitude values using the Field 
> Calculator 
> <http://support.esri.com/index.cfm?fa=knowledgebase.techarticles.articleShow&d=31863>.
>
> Is it possible to do something similar in gvSIG? I've been trying to 
> twist my head on this problem for a few days now.
>
> I'm running gvSIG 1.1 and 1.9a on Ubuntu 8.10.
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-- 

Sergio Clark
Equipo gvSIG
IVER T.I., S.A.
www.iver.es
www.gvsig.com


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