In message <[EMAIL PROTECTED]>
"Robert (Jamie) Munro" <[EMAIL PROTECTED]> wrote:
> Longer term, it would be great if the PDF version let you select a paper
> size and orientation and made the map whatever scale was needed to fit
> it. As someone else said, it would be good if /this/ full page map had
> attribution etc. on it, but I wouldn't put the attribution on other
> formats of map - they are for building on and inclduing into larger
> documents, and the copyright needs to be added as appropriate to those
> documents.
It's not very easy to work out unfortunately, and in particular
there are issues with the fact that mapnik assumes 96 DPI while
the postscript and PDF output should really be 72 DPI so at the
moment mapnik probably is producing quite the scale you think it
is when you render to those types.
> A quick interface request: Can we put PDF at the top of the list, as
> it's the most universally understood vector format, followed by SVG,
> then Postscript, then leave the raster formats (PNG and especially JPEG)
> at the bottom. We don't want people to download screen resolution maps,
> print them and say that on-line maps aren't as good as real paper ones
> just because they are first on the list.
I'm reluctant to do that at the moment because there are various
issues with the PDF output that make it non-optimal as a default
in many cases.
Specifically there is a rendering bug with the one way arrows in
evince (just reported) and the maps can be very slow to render
especially (once I've turned on clipping which I plan to do) if
you're using evince with cairo 1.4 which most linux distros will
be at the moment.
Also, until mapnik support vector symbols, the PDF maps don't
actually scale that well as the symbols start to look very blocky
as you zoom in.
> Will the postscript output work as an EPS? If so, could we call it EPS
> as that's a filetype graphic designer types will recognise.
I don't know if it will function as EPS as is - cairo 1.6 has
explicit support for EPS but the python bindings don't seem to
support it yet so I can't easily offer it.
Tom
--
Tom Hughes ([EMAIL PROTECTED])
http://www.compton.nu/
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