[GRASS5] [bug #3681] (grass) v.clean, v.digit: can't snap over 180 longitude

Radim Blazek radim.blazek at gmail.com
Mon Sep 26 03:27:07 EDT 2005


There is no special support for LL, that means
-181,0 is -181,0 and vector modules don't see that point
near 179,0.

Radim

On 9/26/05, Request Tracker <grass-bugs at intevation.de> wrote:
> this bug's URL: http://intevation.de/rt/webrt?serial_num=3681
> -------------------------------------------------------------------------
>
> Subject: v.clean, v.digit: can't snap over 180 longitude
>
> 6.1-cvs July 2005
>
> Hi,
>
> I extracted a vector coastline of Antarctica from the NOAA coastline extractor
> in Mapgen format (see v.in.mapgen help page for link) and imported into GRASS.
> -60 to -90 lat, -180 to +180 lon.
>
> After importing with v.in.mapgen I ran "v.clean tool=snap thresh=0.002" and
> used v.digit to clean it up a bit. That's all fine but neither v.clean nor
> v.digit will snap close the +180 -180 connection. I expect this will be a
> problem from pole to pole?
>
> bug or "known limitation" ?
>
>
> thanks,
> Hamish
>
>
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