2

When I import aerial raster from Google satellite, using the OpenLayers plugin

enter image description here

enter image description here

the raster is located in the right place. But when I export it the raster isn't located in the right place:

enter image description here

I read Problems exporting aerial imagery from QGIS and didn't find any suitable answer for my issue.

1

Don't use EPSG:2039 for the project CRS.

As you can see, I've managed to reproduce your result. enter image description here

Here are possible ways to solve the issue:

Set the project CRS to EPSG:3857 (WGS 84 Psuedo Mercator). This is the CRS that the Google satellite imagery is by default. It goes without saying that you should make sure it is defined that way.

Setting the CRS to EPSG:3857 results in a perfectly aligned road in EPSG:2039 enter image description here

Another option is to not use the Open Layers plugin as it has several issues. You can use the QuickMap Service as detailed in this answer

  • how did you know i used EPSG:2039? – newGIS Apr 19 '16 at 5:17
  • i also succeed in placing the road on the raster. the problem occur when i export it – newGIS Apr 19 '16 at 5:38
  • @newGIS The on-the-fly projection of heavy basemaps is notoriously problematic. You are trying to project it to 2039, and while it may appear right on the map canvas, the transformation (Molodensky in this instance) doesn't hold when exporting. I observed a similar problem in ArcMap. The solution, like I said, adjust your project to match the heaviest file. As for how I knew you used 2039, I read you bio ;-) – HDunn Apr 29 '16 at 18:58
  • thanks HDunn, i changed the CRS of the layer into 3857-still, in the export- the layer moved aside to a worng place- how can i solved this issue? – newGIS Jun 26 '17 at 8:27
0

finally, i found this solution:

I save the google base map by Project Menu--> Save as image. This image will be automatically with CRS. Then I load the image into the map and export the base map with other layer and the is no error in the map orientation.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.