Tue, Sep 16 2003
22:11:30
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Request created by guest
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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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Wed, Sep 17 2003
10:38:32
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Priority changed to 20 by bernhard
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Fri, Sep 29 2006
14:20:07
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Area changed to wish6 by msieczka
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Wed, Nov 15 2006
00:02:35
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Mail sent by hamish_nospam@yahoo.com
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grass-bugs@lists.intevation.de
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Date |
Wed, 15 Nov 2006 12:02:16 +1300
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From |
Hamish <hamish_nospam@yahoo.com>
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To |
wegmann@biozentrum.uni-wuerzburg.de
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Cc |
grass-dev@grass.itc.it, grass-bugs@intevation.de
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Subject |
Re: [bug #2104] [GRASS-dev] r.neighbors modification
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<20061115120216.04e0f4c0.hamish_nospam@yahoo.com>
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<200611141730.28599.wegmann@biozentrum.uni-wuerzburg.de>
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<200611141730.28599.wegmann@biozentrum.uni-wuerzburg.de>
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Martin Wegmann wrote:
> BTW I posted such a wish quite a while ago but for the inactive r.le
> module
> http://www.intevation.de/rt/webrt?serial_num=2104
r.le is not totally "inactive", it has been updated recently to (at least)
be fully functional.
new filters should probably be added to the newly commited r.li however.
Hamish
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Tue, Jul 31 2007
14:19:50
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Status changed to resolved by mneteler
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Tue, Jul 31 2007
14:19:50
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Mail sent by mneteler
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[r.neighbors updated by glynn]
>the command works like
>
>r.neighbors -c input=name output=name method=average size=5
>and the output would be the average of values in a ring of 5x5 around the
>center pixel, wouldn't it?
>
>then I can drop my r.mapcalc script and close one old wish report related to
>r.le but solved via r.neighbors
>(http://www.intevation.de/rt/webrt?serial_num=2104&display=History) - thanks
>a lot!
>
>Martin |
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