Hi,

I am sorry, if you experiencing this message again. I am re-sending this 
message again (bothering many of you with the same problem), but unfortunately 
I have encountered some registration problems with gdal-dev, and thus, I am not 
sure, whether my first post got "through",
When looking back on my initial problem/question, is is all about producing a 
scale-true print of a PDF: In a 1:5000 print, one unit on the paper is to 
correspond with 5000 units in reality. This is the heart of my problem.
I beg your pardon.
/Aron


Hi there,

I have a problem creating a GeoPDF with a proper page-size, and I want to know 
how to solve it.


I am producing a GeoPDF from some pre-rendered raster, for which I specify a 
proper projection window and SRS.



I need to have an A-format sized PDF-created (say A4 portrait: 210 x 297 
millimeters).

I want a print-quality of say 200 DPI. Thus, I create the pre-rendered raster 
as:



Width: 210 / 25.4 * 200  ~ 1653 pixels

Height: 297 / 25.4 * 200  ~ 2339 pixels



When using gdal-translate I specify DPI=200 and a proper projwin and Srs.



When opening the produced PDF with Adobe Acrobat Reader, the PDF is perfectly 
geocoded, but AAR is not reporting the size of the PDF as one would expect. The 
actual size reported by AAR is:



22.97 x 32.49 in



but one would expect it to be:



Width: 210 / 25.4 = 8,267.. in

Height: 297 / 25.4 = 11,692.. in



Furthermore, when the PDF is opened with AAR, the zoom-factor of AAR is 59.3%, 
but I would very much like it to be 100%.

Can I somehow accomplish this using the new WRITE_USERUNITS option, or what?

Thank you!



Regards,

Aron Olsen



_______________________________________________
gdal-dev mailing list
[email protected]
https://lists.osgeo.org/mailman/listinfo/gdal-dev

Reply via email to