[Gvsig_english] SQRT and proportional symbols

[Juan Lucas Dominguez Rubio]

Hello.
If your vector layer has a numeric field, you can do this:
 
- Add a new field of type DOUBLE
- Use the function SQRT in the field calculator so that
 
NEW_FIELD = SQRT(NUMERIC_FIELD)
 
- In the symbology dialog, choose 'proportional symbol' with your favorite settings.
 
This is what you'll get:
 
http://www.prodevelop.es/files/fm/public/downloads/documents/screenshots/gvsig_desktop/ita.html
 
Circle area (not diameter) is proportional to population.
 
Regards,
 
Juan Lucas Domínguez Rubio
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Prodevelop SL, Valencia (España)
Tlf.: 96.351.06.12 -- Fax: 96.351.09.68
http://www.prodevelop.es <http://www.prodevelop.es/> 
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