Plotting raster images with a certain screening value
Plotting raster images with a certain screening value
(OP)
Hey all,
I'm having difficulty getting a drawing to plot properly. The drawing uses a .tif file attached as a raster image as a background. The image is on a seperate layer, which I assign a color that is defined to be plotted at 25% screening. On other images I have been able get the result I want, which is the image shown lightly in the backround with all my other work shown at 100% in the foreground. If I change to a smaller viewport scale it also works, but not at the scale I need. Anyone have a clue as to why this works with some images or even for that matter at different viewport scales and not others?
Cheers,
Donovan O'Callaghan
I'm having difficulty getting a drawing to plot properly. The drawing uses a .tif file attached as a raster image as a background. The image is on a seperate layer, which I assign a color that is defined to be plotted at 25% screening. On other images I have been able get the result I want, which is the image shown lightly in the backround with all my other work shown at 100% in the foreground. If I change to a smaller viewport scale it also works, but not at the scale I need. Anyone have a clue as to why this works with some images or even for that matter at different viewport scales and not others?
Cheers,
Donovan O'Callaghan





RE: Plotting raster images with a certain screening value
2) Are your raster lines perhaps too thin for the resolution of your printer at certain scales ?
RE: Plotting raster images with a certain screening value
> entities ? Tools/Display order/Send to back etc ?
Yes, I do.
> 2) Are your raster lines perhaps too thin for the
> resolution of your printer at certain scales ?
No, the image prints out fine if I use a standard rectangular viewport. However, if I use a polygonal viewport in order to hide the garbage aroung the image I want, it prints dark. As a solution I'm just using the rectangular viewport and went to the .tif file and deleted all the garbage I didn't want.
Thanks,
Donovan
RE: Plotting raster images with a certain screening value
RE: Plotting raster images with a certain screening value
OLE objects have long been a problem in AutoCAD. The results of attempting to plot them depend both on AutoCAD and on your operating system and shared system files. Have a look at the readme for your AutoCAD ... it may give you some idea of the limitations.
To Donovan :
I have just noticed in the AutoCAD 2002 Readme Help files / General information that AutoCAD 2002 has a problem plotting non-rectangular viewports. Maybe this has something to do with your problem.