I'm a newbie to Spatialite so forgive me if the answer to my question is obvious...(I tried looking online but couldn't find the answer to this question). I am trying to use the function ST_touches in Spatialite Gui but it says it does not recognize that function. Is there anything I need to install in order to use this function? And how? Thanks so much, Ana
If you have ST_Touches function in your spatialite-gui the following query will return "1".
If the error message tells that function is missing, believe it. Spatialite-gui 1.7.1 Windows build from the Spatialite site for sure has the function.