Decimal degree units

[Rob Atkinson]

cshorte2 at csc.com wrote:

> > I'll try the PROJ.4 support, but I'm guessing that the performance hit will
> > kill me. Some of my maps have thousands of shapes on several layers.
>
> Rob Atkinson did some work on performance of PROJ.4 and reckoned it added 20% to
> 30% to the total processing time.
>
> Cameron.

FYI: This was on a shapefile about 20Mb in size, with highly detailed polys. Maybe
the fixed overheads of file IO are significant.
Having a memory resident server rather than a CGI would be the single biggest
performance boost I think.

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Rob Atkinson                                                rob at socialchange.net
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