Hello, The my problem is to create a map with contour lines. My file text is constituting by : latitute (y), longitude (x) and precipitation (z). Want to plot the contour lines of precipitation with the qgis. This is possible? How I could do this in qgis? Thanks! *****************************************
GRASS can do that from qgis, but first, you need to generate a surface by interpolation, for example with with r.surf.rst, (http:// grass.itc.it/gdp/html_grass63/v.surf.rst.html), after which contour may be obtained from the resulting raster map. You may also have to use a mask to limit the operation to the area of your data. However, the qgis module limits the options to set in your operation, so maybe it is also advisable to run it from within GRASS.
Hope it is useful, Dr. Sergio Zárate Pedroche José María Arroyo 228 Morelia, 58341, Michoacán Tel. (443) 352-5307 Cel. (443) 438-6212 [EMAIL PROTECTED]
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