Talk:Exercise 08

Warp does not work

I do the following:

1. Open Warp module
2. Chose the following settings:
   1. Select aerial320_99 as input (as proposed by the module)
   2. Select U:\geodata\aerial320_99_warp as output
   3. Source SRS: Looked up SRS of aerial310_99 (WGS 84, EPSG:4326) and selected it
   4. Target SRS: Looked up project SRS (Gauss-Kruger, EPSG:2647, see Project settings)
   5. Resampling method: near
   6. Memory use: 20 MB (minimum, source data is 3,3 MB large)
   7. Use multithreaded warping implementation
   8. Load into canvas when finished
3. Hit OK

I receive the following error message:

• ERROR 1- Unable to compute a transformation between pixel/line and georeferenced coordinates for U:/geodata/aerial320_99.tif.
  Thera is no affine transformation and no GCPs.

Solution: I did not realize this exercise is working with the data to be downloaded in GRASS data import. It works based on this data. - Levent