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Thanks!
I finally succeeded in getting what my figure should really like, see the attached file.
Kent

I like somebody to revisit this challenge for me. I have tried with no success after I got help from Stefan on a similar problem recently (posted on Nov. 2nd).
Kent

Thank you very much!
Your support is highly appreciated.

Stefan, thanks for help!
May be I was not precise enough to define what I wanted to achieve.
I want the shading to be as indicated in black in the attached file.
Kent

See the attached latex code where I would like to shade the region between the drawn parabola and ellipse.
Anybody knoes how to do this?
I have tried several combinations using \clip, \scope etc. without success.
Best regards,
Kent

The option transform shape created some surprising results. (At least for me.)
However, after looking into the matter more closely, I realized that the problem is not PGF/Tikz, but rather the \includegraphics options used.
Kent

The use of scaling in the tikzpicture environment, one question: Given two points A and B which has the |AB| = n (the length of the line between A and B) before scaling (i.e. scale=1), then I thought that with scale = 0.5, we should have that |AB| = n/2. But, I have generated picturers where this se...

Thanks, I see I need to upgrade the PGF version I am using or could anybody supply the code needed/mentioned?

I often should have liked to be able to test for numerical conditions in my PGF macros. Let me illustrate with one simple example: Let A and B be two given poinst where we have access to their coordinates, say A = (\xA,\yA) and B = (\xB,\yB) . I would then like to be able to check if...

I am using pdflatex to generate my Latex documents and the graphicx package to include figures generated elsewhere (ex. by PGF/pdflatex). Taking the pdf file version of the figure by, say, the Snipping Tool to a .PNG file seems to detoriate the quality of the figure. If this is the case, any better ...