setting graphics height to % of text height?

[Diab Jerius]

I'm using lyx-1.3.2, xforms.

I'm generating a page of "thumbnail" images and need to specify the
graphics height as a percentage of the text height.  The width should
scale with the height, as it is not the constraining dimension.

What I'd like to get is the equivalent of

        \includegraphics[height=0.2\textheight]{foo.ps}

I can't figure out how to do this.

In order to make the Height input box active, I select anything but
Scale% for the Width.  I then select text% for Height, but it translates
that to textwidth, not textheight, in the output LaTeX.

Is there some way to do this?

Thanks,
Diab

-- 
Diab Jerius                       Harvard-Smithsonian Center for Astrophysics
                                  60 Garden St, MS 70, Cambridge MA 02138 USA
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