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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

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Do you have a very old version of spatialite? Can you try with just "Touches" (i.e. leave off the "ST_" part)? If that doesn't work, can you show exactly how you are using the function? – BradHards Dec 31 '12 at 3:24
Was your version compiled with GEOS support? – Sean Dec 31 '12 at 4:55

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