Plotting raster images with a certain screening value

[Donovan]

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

 

[RiBeneke]

1) Have you got the display order correct for the entities ? Tools/Display order/Send to back etc ?
2) Are your raster lines perhaps too thin for the resolution of your printer at certain scales ?

 

[Donovan]

> 1) Have you got the display order correct for the
> 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

 

[DannyB]

I have a related question.I normally use R14 and have access to 200i. I am trying to embed (OLE -link) word and excel documents into my drawings. I get good results when I preview the plots, but am having problems with the actual plots. The fonts get translated to some other undesirable font and the line spacing gets distorted. Word is not as bad, but excel is a big problem. What is the secret to getting the plot to look like the preview?? How do you get images such as bmp, gif, jpg, etc. to plot as part of the drawing. Does 2000i handle this better than R14? Is there a website that tells how to do this??

 

[RiBeneke]

To DannyB :
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.