[Xastir] [tiling] reading tiles slow

[Jerry Dunmire]

All the ones I've looked at require some sort of transformation. It
all depends on the projection used to generate the raster map. I'm
starting to look at Terraserver tiles now and the transformation
from/to UTM will be a bear. There's a library (Proj.4), so that's
where I'll start.

...jerry


On Mon, Aug 16, 2010 at 5:52 PM, Jason KG4WSV <kg4wsv at gmail.com> wrote:
> On Fri, Aug 13, 2010 at 3:36 PM, Jerry Dunmire <jerry at dunmire.org> wrote:
>> The root of
>> the problem is that projection mapping that must occur between the
>> Mercator projection of OSM tiles and the 'un-projected' Xastir view.
>> Each pixel requires a multiple trig operations.
>
> Is this something OSM-specific, or does it apply to all xastir raster maps?
>
> -Jason
> kg4wsv
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