[GRASS-dev] X monitors display rasters half resolution off to the left

[Soeren Gebbert]

Hi, 
i can confirm this bug.

http://www-pool.math.tu-berlin.de/~soeren/grass/modules/screenshots/GRASS_display_bug.png

soeren

Am Montag, 5. März 2007 20:14 schrieb Maciej Sieczka:
> Hi,
>
> In Spearfish:
>
> $ g.region rast=landuse -a
> $ d.mon x0
> $ d.rast landuse
>
> There is a black, vertical artifact line on the right edge of the monitor.
>
> $ d.zoom -> out
>
> It dissapears...
>
> $ d.zoom -> in, until cells are visible
>
> With some luck, you will see such artifact line on the right again -
> different colors.
>
> $ d.what.rast
>
> Query some left-most non-null cells. If you click their left side, you
> get null instead of the value you expect.
>
> Query the left half of a null cell on the right of some right-most
> non-null cell. Instead of null, you get the value you'd expect from
> that non-null cell.
>
> Seems like the raster is displayed half resolution off to the left,
> compared to d.what.rast query results. A recently introduced bug.
>
> This is propably the reason of the bug I reported as "r.to.vect
> feature=lines: the output vector is moved half the resolution east off
> the input raster"
>
> http://wald.intevation.org/tracker/index.php?func=detail&aid=322&group_id=2
>1&atid=204
>
> Maciek
>
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