Hi all, I'm interested in being able to make graphs that update depending on what the active feature in the atlas is. I know some python and a little bit of the QGIS API, but I'm curious - is there some sort of listener function for the atlas that gets called whenever the Preview Atlas/Prev Feature/Next Feature/First Feature/Last Feature buttons are pressed?
What I eventually want to do is to manipulate the node items that were created in a recent updated version of QGIS, and use them to make a line graph, gridlines, etc. I'm hoping to draw the data directly from the shapefiles themselves or from a .csv file. I originally tried to use an expression in a text box to do this, but it seems that expressions are unable to use custom functions to manipulate the composer. So I'm hoping that there's some sort of Listener method. Thanks. _______________________________________________ Qgis-developer mailing list [email protected] List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer
