On 03/10/2011 07:04 AM, Sascha Eichenauer wrote: > Am 09.03.2011 01:17, schrieb Julio Cesar Canales DElgadillo: >> Hi there, >> >> I have some polygon layers in lat-long system WGS84. I'm trying to measure >> the >> polygons' area but I'm getting squared degrees instead hectares. Somebody >> knows >> how to solve it? >> Also, apparently I have something miss in the GDAL tools libraries because >> when >> I try to use them I get (always) an error message and not a single of the >> tools >> is working. Do you know some way to identify the source of failure? >> >> Thanks in advance. >> >> Kind regards >> Biól.MCF. Julio César Canales Delgadillo. >> Verhaltensbiologie >> Barbarastr. 11 >> Fachbereich 5 Biologie/Chemie >> Universität Osnabrück >> 49076 Osnabrück >> Phone: +(49) 0541 969 3803 >> Movil: +(49) 0152 043 87082 >> Alternative E-mail: [email protected]
It would be best to use the Projection-on-the-fly and select an appropriate projection for the area you are working in. Once you do that you'll get measurements the way you expect. As for the GDAL Tools, there is a settings item in the menu, you need to set the path to your gdal install in there for it to work. This usually effects OSGeo4w installs and Mac installs. Enjoy, Alex _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
