+13i have a small cartographic map in pdf format ,i have added it in my workspace then i have clipped it ,and i tried to write it again in Adobe geospatial pdf by feature writer transformer ,i get an empty file .it does not want to open .
what i did wrong ?
i would like to save it again in pdf ,how could i achieve it ?
is there a way to read pdf as Raster .
Thanks for help Fme 2018
Best answer by debbiatsafe
thanks for ur reply,i have tried now only to read the pdf as raster then save it as again pdf without doing any thing in workspace but i got insufficient data for an image .i am not sure what should i do ? even i could see the output in inspector of fme .could u provide me an adice,this data belongs to company and it will be hard for me to share it .thanks for help
The workspace I shared uses the RasterInterpretationCoercer to convert the RGBA32 output from the rasterized PDF to RGB24 (since the PDF writer does not work with alpha bands).
If your rasterized input does not have an alpha band, you do not need to use a RasterInterpretationCoercer.
+20Hi @gogopotter90
It's hard to say without data but I have seen similar issues where there appears to be no output written to the PDF file when there is a mismatch between the input data's coordinate system and the output page units mismatch. The features are usually written but the file appears to be empty as the features are very small.
And yes, it is possible to read a PDF file as raster. To do so, check Non-Spatial and Read Rasterized Pages in the PDF reader parameters. A raster should be created for each PDF page.
+13Hi @gogopotter90
It's hard to say without data but I have seen similar issues where there appears to be no output written to the PDF file when there is a mismatch between the input data's coordinate system and the output page units mismatch. The features are usually written but the file appears to be empty as the features are very small.
And yes, it is possible to read a PDF file as raster. To do so, check Non-Spatial and Read Rasterized Pages in the PDF reader parameters. A raster should be created for each PDF page.
thanks for ur reply,i have tried now only to read the pdf as raster then save it as again pdf without doing any thing in workspace but i got insufficient data for an image .i am not sure what should i do ? even i could see the output in inspector of fme .could u provide me an adice,this data belongs to company and it will be hard for me to share it .thanks for help
+20thanks for ur reply,i have tried now only to read the pdf as raster then save it as again pdf without doing any thing in workspace but i got insufficient data for an image .i am not sure what should i do ? even i could see the output in inspector of fme .could u provide me an adice,this data belongs to company and it will be hard for me to share it .thanks for help
Hi @gogopotter90
Unfortunately, it is hard to say what the issue is for your workflow without seeing the data.
I have attached an example workspace where the PDF reader outputs a rasterized page and the page is written back to PDF. I hope it helps.
+13thanks for ur reply,i have tried now only to read the pdf as raster then save it as again pdf without doing any thing in workspace but i got insufficient data for an image .i am not sure what should i do ? even i could see the output in inspector of fme .could u provide me an adice,this data belongs to company and it will be hard for me to share it .thanks for help
thanks alot for ur workspace but i got error @ReinterpretRaster: Converting from 4 bands to the 'RGB24' interpretation in RASTER mode requires an input RGBA raster. Consider converting to the 'RGBA32' interpretation firstRasterInterpretationCoercer
i am using fme 2018 because this workspace for higher version
+20thanks for ur reply,i have tried now only to read the pdf as raster then save it as again pdf without doing any thing in workspace but i got insufficient data for an image .i am not sure what should i do ? even i could see the output in inspector of fme .could u provide me an adice,this data belongs to company and it will be hard for me to share it .thanks for help
The workspace I shared uses the RasterInterpretationCoercer to convert the RGBA32 output from the rasterized PDF to RGB24 (since the PDF writer does not work with alpha bands).
If your rasterized input does not have an alpha band, you do not need to use a RasterInterpretationCoercer.
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