[Gvsig_english] computing X,Y coordinates

[Nik Go]

I'm sorry if my original post was not clear on this but x,y in that post
meant lat/long coordinates for me. So does this produce the lat/long
coordinates, similar to what the link I made does in AV?


On Mon, Feb 23, 2009 at 5:11 PM, Benjamin Ducke <
benjamin.ducke at oxfordarch.co.uk> wrote:

> It should also be able to "misuse" an annotation layer for that purpose.
> You should be able to create an annotation layer from your polygon file.
> This will be a simple points file with a centroid for each polygon where
> the annotation is supposed to go. Simply load that new layer back into
> your project as a regular Shapefile, then use the field calculator
> to get the X/Y coordinates.
>
> Ben
>
> Sergio Clark wrote:
>
>> 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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>>>
>>
>>
>>
>
> --
> Benjamin Ducke
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>
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