Okay, I'll take another look. I thought I'd adjusted the CRS for all layers but I must be missing something. Thanks for your help!
Caroline On Sat, Dec 17, 2011 at 11:31 AM, Gerardo Jimenez <[email protected]>wrote: > > > Gerardo Jiménez Delgado > Instituto de Investigaciones Antropológicas > Universidad Nacional Autónoma de México > Ciudad Universitaria s/n > Coyoacan 04510 Mexico City > Mexico 56 22 95 16 > > ------------------------------ > From: [email protected] > To: [email protected] > Subject: RE: [Qgis-user] problems with layers from one source > Date: Sat, 17 Dec 2011 12:30:49 -0500 > > > I am sorry to differ. They can not be in the same CRS. A latitutude > longitude CRS has valus for longitud +- 180 and for latitude +- 90 Degrees. > A crs such as a UTM (for instance) could have values in the 10,000 to less > than a million for the east, and northings could have values from 0 to > almost 10,000,000. Then, your data could not share crs. If you change the > crs in propertied/general/specify crs that aill not make any difference and > could make the problems worst since, for instance, if your data is in the > west hemisphere and you load data from a utm layer as a latitude longitue > crs , any GIS (not only qgis)all will be displace the layers, since utm do > not handle negative values. In order that data could be in the same crs you > have to reproject your data. Reprojecting converts from one crs to another > totally different (from espherical coordinates to metric ones). For vector > layers in qgis 1.7 you have the layer and chose save as, define the file > format, choose the original crs and the one you want. For raster layers you > have to go to raster/projections/war(reproject). In order to reproject, I > insist, you must know the original crs of your data. > > Can you let us know where your data is located? also if you know the crs? > also sometimes it is worth to know which version of Qgis you are using and > in which OS you are using... > > Hope it helps > > Gerardo Jiménez Delgado > Instituto de Investigaciones Antropológicas > Universidad Nacional Autónoma de México > Ciudad Universitaria s/n > Coyoacan 04510 Mexico City > Mexico 56 22 95 16 > > ------------------------------ > Date: Sat, 17 Dec 2011 10:33:17 -0600o select the laye > Subject: Re: [Qgis-user] problems with layers from one source > From: [email protected] > To: [email protected] > CC: [email protected] > > The CRS is the same for all my layers, this doesn't seem to change > anything. > > On Sat, Dec 17, 2011 at 7:06 AM, Gerardo Jimenez <[email protected]>wrote: > > The main problem could be that your layers are in different CRS. I assume > that you want to use lat lon coordinates ("they should be in the range of > (-87, 41)"). Because you can not have millions of degrees, it is pretty > sure that the layers that display coordinates in the millions could be a > CRS that defines its measuring units in meters or feets. For vector layers > (and assuming a format that can store projection information), select the > layer , right click, choose properties and go to the general tab. There you > must be able to see the projection information. For raster layers go to > rater menu, choose Miscellaneous and select info. Choose your raster and > you must be able to see the projection information there. > > I like to have all my layers in the same CRS, some people also likes to > use the "on the fly CRS transformation" capability of QGIS . Try in > Settings, project settings and go to the CRS tab, Choose "enable on the > fly CRS transformation", then load some layers. One thing is for sure, you > must know the crs of each of your layers before starting to work with them. > > Hope it helps > > Gerardo Jiménez Delgado > Instituto de Investigaciones Antropológicas > Universidad Nacional Autónoma de México > Ciudad Universitaria s/n > Coyoacan 04510 Mexico City > Mexico 56 22 95 16 > > ------------------------------ > Date: Fri, 16 Dec 2011 11:36:07 -0600 > From: [email protected] > To: [email protected] > Subject: [Qgis-user] problems with layers from one source > > > Hello (again!) > > I'm having trouble with all the layers I download from one particular > source. These layers don't show up in the same place as any others of the > same area, including those I've geocoded myself. The coordinates shown at > the bottom of the screen for these are HUGE - they should be in the range > of (-87, 41) but they're in the millions. I've made sure all layers are in > the correct CRS and done everything else I can think of. Does anyone have > any tips or ideas? Thank you! > > Caroline > > _______________________________________________ Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user > > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user > >
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