Autocad LT Raster Image Alignment in Output pdf file

[jpmerron]

Note - I started this discussion in error in the Windows dicussion group

I am using a tiff file as a Raster Image Reference while drawing over it in AutoCad LT 2013 for mac. The raster file is 8200 x 5700.  If I examine the autocad drawing by zooming in closely the alignment is perfect. However, when I create an A0 pdf file of the drawing there is an alignment error between the raster image and the vector drawing on the x axis. The y axis alignment is perfect.

I believe it is a scaling error since there is no visible alignment error on the left hand side of the drawing and the error increases across the drawing to the right hand side. The error is small, about 0.2% but it is clearly visible in the pdf file.

To illustrate the problem I have put a test mark on the top right hand corner of the drawing outline and the attached file shows this portion of the drawing in autocad on the left and in the pdf file on the right.

For those who woild like more detail I have also attached a zip file containing the Autocad file, the raster image ( most content erased to reduce size) and the output pdf file - A0 print size.

I have tried different drivers and plot settings but the error is always there.

Any ideas for solving this problem would be greatly appreciated

(N.B. Since the initial posting I upgraded to Mavericks, and was forced to move to LT 2014 due to incompatibility of LT2013 - but the problem exists in both versions)

Best Regards

John

[maxim_k]

Hi,

I looked at your drawing, and I can only confirm the existence of such a problem.

I tried also to save to PDF in Windows version of AutoCAD and in DraftSight for Mac - they have not such issue on PDF output. So this looks like a defect in AutoCAD for Mac.

Maxim

[jpmerron]

Maxim,

Thanks for taking the time to check this out.

Is there an official way that I can report this issue to Autodesk - thought I don't expect it will make the "must fix" list any time soon?

Any suggestions for a work around would be appreciated

Best Regards

John

[maxim_k]

Hi John,

>>>Is there an official way that I can report
>>>this issue to Autodesk
Already reported.
As about workaround:the first thing I thought was to slightly scale down image in DWG file to compensate PDF output issue. This could be achieved by creating block with image and inserting it into the drawing with unequal X Y scales.
Maybe it worth to play with Image cropping, or something else. Really don't know.

Maxim