Thank you both. I got as far as \dimexpr (expressions) page in the Wiki, and all the words made sense, more or less, but not the whole.
In case anyone else find this useful, I have success with Wolfgang 2 and 3,
with (2) being the simplest....but that may just be the fit to my brain.
It's building stacked progress bars for documents with subsections, in case
anyone searches this- colours and prettification to follow!
Ian
On 2 March 2011 11:41, Wolfgang Schuster
<schuster.wolfg...@googlemail.com>wrote:
>
> Am 02.03.2011 um 12:25 schrieb Ian Lawrence:
>
> > Sorry. me again...and I have been all over the wiki, mailing lists and
> manuals...
> >
> > I have this:
> >
> > \setlayer [progresssteps] % name of the layer
> > [hoffset=904 px, voffset= 28\nuggetnumber px] % placement
> (from upper left corner of the layer)
> > {\stepstack} % the actual contents of the layer
> >
> > And I am hoping that as I increase nuggetnumber the voffset of the layer
> will be 28*nuggetnumber
>
> Variant 1:
>
> \newdimen\baseoffset \baseoffset=28px
>
> \setlayer[…][voffset=4\nuggetnumber]{…}
>
> Variant 2:
>
> \def\nuggetnumber{4}
>
> \setlayer[…][voffset=\dimexpr28px*\nuggetnumber\relax]{…}
>
> Variant 3 (what i suggest):
>
> \definemeasure[baseoffset][28px]
> \definemeasure[verticaloffset][\dimexpr\measure{baseoffset}*4\relax] %
> replace “4” with your own factor
>
> \setlayer[…][voffset=\measure{verticaloffset}]{…}
>
> Wolfgang
>
>
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