Bug report #20617
Updated by Giovanni Manghi over 5 years ago
Using the "Refresh (F5)" icon does not update the view with the new georeferencing (raster), remaining the old image on the screen. By manually uploading the raster file I observe that this has been updated, it also contains the new GCPs (the "Render" box (Toggle map rendering) - bottom right - is checked).
Steps:
Method:
1. I load an the already geo-referenced map (raster).
2. I open the georeferencer and load the historical map to be georeferenced (raster, .tif format) and choose/set choose some GCP points points.
3. I save the file with the points points.
4. I choose the transformation settings and select "Load in QGIS when done".
5. press "Start georeferencing", result map is loaded. *Keep the georeferencer dialog open* georeferencing".
Up to this point everything goes smoothly, as always, up to version 2.18.25 included included.
6. Once the georeferenced file is loaded, I choose a transparency (this file remains in the project) to better see the base map.
7. add some new GCPs or modify existing ones I look for other GCPs.
8. set In the transformation settings with the option I deselect "Load in QGIS when done" NOT active, set the output name the same as the previous georeferencing operation, effectively overwriting the previous output done".
9. press "Start georeferencing".
At this point in QGIS 2.18
The view is NOT updated using "Refresh (F5)" will effectively show the result of the second georeferencing operation while in QGIS 3 it continues to show the first result. (F5)".
File (zip): https://drive.google.com/file/d/1c4q_jP9rKS0IQ_2olAI6qPb4QJFfSnHz/view?usp=sharing
Steps:
Method:
1. I load an the already geo-referenced map (raster).
2. I open the georeferencer and load the historical map to be georeferenced (raster, .tif format) and choose/set choose some GCP points points.
3. I save the file with the points points.
4. I choose the transformation settings and select "Load in QGIS when done".
5. press "Start georeferencing", result map is loaded. *Keep the georeferencer dialog open* georeferencing".
Up to this point everything goes smoothly, as always, up to version 2.18.25 included included.
6. Once the georeferenced file is loaded, I choose a transparency (this file remains in the project) to better see the base map.
7. add some new GCPs or modify existing ones I look for other GCPs.
8. set In the transformation settings with the option I deselect "Load in QGIS when done" NOT active, set the output name the same as the previous georeferencing operation, effectively overwriting the previous output done".
9. press "Start georeferencing".
At this point in QGIS 2.18
The view is NOT updated using "Refresh (F5)" will effectively show the result of the second georeferencing operation while in QGIS 3 it continues to show the first result. (F5)".
File (zip): https://drive.google.com/file/d/1c4q_jP9rKS0IQ_2olAI6qPb4QJFfSnHz/view?usp=sharing