[GRASS5] [bug #2104] (grass) r.le.pixel improvement
Request Tracker
grass-bugs at intevation.de
Tue Sep 16 16:11:31 EDT 2003
this bug's URL: http://intevation.de/rt/webrt?serial_num=2104
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Subject: r.le.pixel improvement
Platform: GNU/Linux/i386
grass obtained from: Trento Italy site
grass binary for platform: Compiled from Sources
GRASS Version: 5.0.2 + r.series
On Mon, Sep 15, 2003 at 03:22:27PM +0200, Martin Wegmann wrote:
> Hello,
>
> I did some analysis with r.le (especially r.le.pixel) for an ecological
> project. And I would like to suggest another option in r.le, when doing
> anaylsis in different scales (e.g. 1, 2, n pixel distance included in the
> calculation), it would be very useful to do a " ring-analysis" instead of
a
> radius-analysis.
> With the latter I can tell what's the e.g. mean of the core pixel plus the
> pixel in a radius of 2 pixels like
>
> a a a a a
> a b b b a
> a b x b a
> a b b b a
> a a a a a
>
> but I can not tell what the mean in a certain distance is. this would be
> pretty interesting for ecological research, e.g. if a species if affected
by
> the whole mean or by the mean of PP in a distance of x meter.
>
> a a a a a
> a a
> a x a
> a a
> a a a a a
>
> I hope I did not miss a reference to such a tool in the manual ;-)
>
> cheers Martin
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