Hi Joe, Correct, the images you reference do not have any coordinates with them.
You'll need to georeference them with them using the coordiates in the Readme.pdf Georeferencer is in Raster:Georeferencer:Georeferencer The top left point is 0,0 The bottom right point is 216000,-216000 Note also west and south need to be entered as negative. You can find the Plate Carree projection by searching in the CRS selection dialogue. (It's EPSG:32662) They're big images, so it's a processor intensive. If your area of interest is near an image boundary, then Alex's VRT suggestion is very helpful. (Raster:Miscellaneous:Build Virtual Raster (Catalog) ) Hope that's helpful. -ramon. ----- Original Message ----- From: "Joe Lertola" To:"QGIS User" Cc: Sent:Sun, 24 May 2015 23:02:23 -0400 Subject:[Qgis-user] Using Nasa's Visible Earth images with Qgis Hello, -Joe I would like to download Nasa’s Visible Earth images then load them into Qgis and then use the Clipper command to clip out rectangular portions with specific latitude/longitude boundaries. The Nasa images are available here: http://visibleearth.nasa.gov/view.php?id=74218. The problem I am having is that the images come into Qgis without the proper geographic coordinates. The Nasa documentation says that the images are in the Plate Carree projection and the projection datum is WGS84. But with my very limited knowledge of map projections I do not know how to set this up in Qgis so that the images will be positioned properly and use decimal degrees as their units. Any help would be greatly appreciated. Thanks, -Joe _______________________________________________ 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
