I want to read a GEOTFF, add an alpha channel and then write a png with a pgw rasterfile.
My Workbench works but only creates wld-files with png.
How can I create pgw-files?
Solved
How can I create a PGW file instead of a WLD file during conversion from GEOTIFF to PNG?
Best answer by ebygomm
You'll have to either use a filecopy writer or a system caller to create the pgw. I'd recommend swapping the writer for a feature writer, you can then use the output to trigger a systemcaller or send to a file copy writer
Create with filecopywriter (original wld file remains)
Rename with system caller - wld file renamed
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+40- Contributor
The pgw file is just a wld file with a different extension.
Renaming the file should work.
The pgw file is just a wld file with a different extension.
Renaming the file should work.
Thank you!
Is it possible to rename the files during the process in the picture?
+51- Evangelist
- Best Answer
You'll have to either use a filecopy writer or a system caller to create the pgw. I'd recommend swapping the writer for a feature writer, you can then use the output to trigger a systemcaller or send to a file copy writer
Create with filecopywriter (original wld file remains)
Rename with system caller - wld file renamed
You'll have to either use a filecopy writer or a system caller to create the pgw. I'd recommend swapping the writer for a feature writer, you can then use the output to trigger a systemcaller or send to a file copy writer
Create with filecopywriter (original wld file remains)
Rename with system caller - wld file renamed
Thank you!
For what is the ListExploder?
+51- Evangelist
Thank you!
For what is the ListExploder?
If you are writing several png's at once, the names of them are returned in a list from the summary port of the FeatureWriter, this needs to be exploded so that you rename the wld file for each output png
If you are writing several png's at once, the names of them are returned in a list from the summary port of the FeatureWriter, this needs to be exploded so that you rename the wld file for each output png
Thank you! It nearly worked.
I used the the systemcaller to rename the files with this command line:
C:\\Windows\\system32\\cmd.exe /c "ren "OutputFldr\\*.wld" "*.pgw""
I got the desired PNG+PGW files.
BUT I always get an fatal error that the PNGRASTER writer failed to obtain raster from feature. "Only features with raster geometry are expected"
I can't find the problem...
+51- Evangelist
Thank you! It nearly worked.
I used the the systemcaller to rename the files with this command line:
C:\\Windows\\system32\\cmd.exe /c "ren "OutputFldr\\*.wld" "*.pgw""
I got the desired PNG+PGW files.
BUT I always get an fatal error that the PNGRASTER writer failed to obtain raster from feature. "Only features with raster geometry are expected"
I can't find the problem...
Can you share a screen print of your workflow, it sounds like you're sending a non raster feature to the png writer
Edit: you've already written the file with the featurewriter, there is no need for the original writer after the system caller. You are sending a non raster feature into that writer, hence the message.
Can you share a screen print of your workflow, it sounds like you're sending a non raster feature to the png writer
Edit: you've already written the file with the featurewriter, there is no need for the original writer after the system caller. You are sending a non raster feature into that writer, hence the message.
Thank you so much! It works!
+51- Evangelist
Thank you so much! It works!
If you're using the rename statement posted above, you don't actually need to explode the list, you can just go straight to the systemcaller
If you're using the rename statement posted above, you don't actually need to explode the list, you can just go straight to the systemcaller
Do you mean that one?:
C:\\Windows\\system32\\cmd.exe /c "ren "OutputFldr\\*.wld" "*.pgw""
+51- Evangelist
Do you mean that one?:
C:\\Windows\\system32\\cmd.exe /c "ren "OutputFldr\\*.wld" "*.pgw""
Yes, that will rename all files with extension wld to pgw. So you only need to call it once, not once per png
Yes, that will rename all files with extension wld to pgw. So you only need to call it once, not once per png
Ah I understand...
Thanks a lot!
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