Hi all
We are suffering with problems when printing raster images to PDF. When printing an image which is reprojected through a reprojected dgn-file, we see "yellow" lines through the image. The problem only appears when printing to PDF from sheet models. If we change the sheet models properties to design model, the problem disappears but returns when I change back to sheet models.
When we print from design models there is no yellow lines.
Normally these "yellow" lines is appearing due to the settings in raster manager, where the settings for "Inherit from GeoCS from Model" and the "coordinate system" to the raster image is essential. I have tried almost all combinations of these to settings, but nothings changes.
Does anybodu knows how to avoid these yellow lines at raster images on PDF documents when i'm printing a sheet model?
It only seems to be a problem when using sheet models.
Any help would be appreciated.
See attached files with example on PDF with yellow lines (KP2000S.pdf)
To reproduce the problem, extract the files to the same folder and open the file "KP2000S.dgn", where the file "UTM_medpng.dgn" is referenced.
Navigate to the sheet model "LIFAplot01" and try printing it to PDF to see the yellow lines.
Regards Rune Christensen
2526.Data.zip
That's a known issue when printing rotated raster attachments to PDF, and is for the most part an Adobe Acrobat problem. The yellow lines, sometimes referred to as "ghost lines", mark edges of the raster shards output by the graphics hardware and pieced together in the PDF. When those edges are not perfectly vertical or horizontal, and Acrobat applies anti-aliasing effects to them, the shard edges become blurry and you see a yellow background peeking through. The effect can be dramatically reduced by turning off image smoothing in the Acrobat page display preferences. Depending on the raster, the view/reference/raster rotation, and the zoom level in Acrobat, evidence of non-rectangular raster shard boundaries may still be visible. Raster sharding by the graphics hardware does not always occur; it can be avoided for background plane rasters in pure 2D designs. If you are able to convert your designs (master and references) to 2D, then you should be able to eliminate the ghost lines no matter the rotation or Adobe preference settings.
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I dont know if this is related but we have a process here where we reference in a raster image into model space. We then reference that model space into our sheet model for printing along with a border. The sheets print often without issue. However, at some point after the initial print, dotted lines appear on the PDF of the sheets. The same pattern repeats on affected sheets but not all raster sheets are affected. It appears to be a BlueBeam issues since we are not seeing the issue upon initial print. Any known ways to address this?