[GRASS-user] Problems with r.viewshed
Pedro Palheiro
pedro.palheiro at gmail.com
Fri Sep 26 05:16:52 PDT 2014
Hello Markus,
Is there a place/link to include the suggestions to improve the module help
or manual?
Or should we send them to you directly?
Thank you,
Regards,
Pedro
2014-09-26 12:07 GMT+01:00 Markus Neteler <neteler at osgeo.org>:
>
> On Sep 26, 2014 12:37 PM, "Luis Miguel Royo Pérez" <
> luis.miguel.royo at gmail.com> wrote:
> >
> > Thank you very much. That was the problem.
>
> Please suggest how to improve the module help text or manual.
>
> Thanks
> Markus
>
> > Sorry for any inconvenience.
> >
> > Kind regards.
> >
> >
> > El 26/09/14 a las #4, Pedro Palheiro escribió:
> >>
> >> Hello Luis,
> >>
> >> Maybe it is a coordinate reference system problem? It looks like you're
> using wgs84 for the input and coordinates, and requesting the calculation
> in meters (obs_elev, tgt_elev and max_dist). Try to change the CRS to see
> if it works.
> >>
> >> r.viewshed -b input=Portada at inisig output=visPort
> >> coordinates=-3.74034324324,42.5352702703
> >> obs_elev=9 tgt_elev=1.75
> >> max_dist=30000
> >> Computing events...
> >> Computing visibility...
> >> r.viewshed: statusstructure.cpp:73: float
> >> get_vertical_angle(Viewpoint, StatusNode, surface_type,
> >> int): La declaraci?n `fabs(sn.dist2vp) > 0.001' no se
> >> cumple.
> >>
> >> Adios,
> >> Pedro Palheiro
> >>
> >>
> >> 2014-09-25 20:00 GMT+01:00 <grass-user-request at lists.osgeo.org>:
> >>>
> >>> Send grass-user mailing list submissions to
> >>> grass-user at lists.osgeo.org
> >>>
> >>> To subscribe or unsubscribe via the World Wide Web, visit
> >>> http://lists.osgeo.org/mailman/listinfo/grass-user
> >>> or, via email, send a message with subject or body 'help' to
> >>> grass-user-request at lists.osgeo.org
> >>>
> >>> You can reach the person managing the list at
> >>> grass-user-owner at lists.osgeo.org
> >>>
> >>> When replying, please edit your Subject line so it is more specific
> >>> than "Re: Contents of grass-user digest..."
> >>>
> >>>
> >>> Today's Topics:
> >>>
> >>> 1. Re: removing small lines (Markus Neteler)
> >>> 2. Problems with r.viewshed (Luis Miguel Royo P?rez)
> >>> 3. Re: Problems with r.viewshed (Markus Neteler)
> >>> 4. Re: Problems with r.viewshed (Luis Miguel Royo P?rez)
> >>>
> >>>
> >>> ----------------------------------------------------------------------
> >>>
> >>> Message: 1
> >>> Date: Thu, 25 Sep 2014 10:25:25 +0200
> >>> From: Markus Neteler <neteler at osgeo.org>
> >>> To: Levente Juh?sz <jlevente89 at gmail.com>
> >>> Cc: GRASS user list <grass-user at lists.osgeo.org>
> >>> Subject: Re: [GRASS-user] removing small lines
> >>> Message-ID:
> >>> <CALFmHhsJtJ0-=
> me+C_8o6+Y9CTA1P-cofD3NemuyE30uBmvF5Q at mail.gmail.com>
> >>> Content-Type: text/plain; charset=UTF-8
> >>>
> >>> On Wed, Sep 24, 2014 at 4:22 PM, Levente Juh?sz <jlevente89 at gmail.com>
> wrote:
> >>> > Hi all,
> >>> >
> >>> > I've seen that the remove_small method of v.generalize has been
> eliminated.
> >>> > Reduction method does not work in the way I want since it just
> removes point
> >>> > from lines and it seems like has no effect on a line of 2 points -
> even if
> >>> > they're smaller than the threshold.
> >>> > Can someone tell me what the workaround is for removing small lines
> from a
> >>> > vector for example by a threshold in map units?
> >>>
> >>>
> >>> You may use v.to.db and option=length (line length), then use
> >>> v.extract to extract into a new map according to a threshold you need.
> >>>
> >>> Markus
> >>>
> >>>
> >>> ------------------------------
> >>>
> >>> Message: 2
> >>> Date: Thu, 25 Sep 2014 10:35:52 +0200
> >>> From: Luis Miguel Royo P?rez <
> >>>
> >>> luis.miguel.royo at gmail.com>
> >>> To: grass-user at lists.osgeo.org
> >>> Subject: [GRASS-user] Problems with r.viewshed
> >>> Message-ID: <5423D3E8.5090206 at gmail.com>
> >>> Content-Type: text/plain; charset="utf-8"; Format="flowed"
> >>>
> >>> Hi everyone,
> >>>
> >>> when I try to run r.viewshed the output shows me this:
> >>>
> >>> Nodata value set to -nan
> >>> rows=198, cols=217, total = 42966
> >>> In-memory memory usage is 4298336 B (4 MB), max mem
> >>> allowed=524288000 B(500MB)
> >>> ***** IN_MEMORY MODE *****
> >>> Start sweeping.
> >>> Computing events ...
> >>> Sorting events...
> >>> Terminado.
> >>> Determine visibility...
> >>> r.viewshed: statusstructure.cpp:73: float
> >>> get_vertical_angle(Viewpoint, StatusNode, surface_type,
> >>> int): La declaraci?n `fabs(sn.dist2vp) > 0.001' no se
> >>> cumple.
> >>>
> >>> Anyone has a clue about what it could be happening?
> >>>
> >>> I'm using GRASS 6.4.4 in Xubuntu 14.04.
> >>>
> >>> I think I must say that a few days ago I installed GRASS 7 but I
> removed
> >>> it and reinstalled GRASS 6.4.4. Maybe is there any incompatibility?
> >>>
> >>>
> >>> Thanks a lot!!!
> >>> -------------- next part --------------
> >>> An HTML attachment was scrubbed...
> >>> URL: <
> http://lists.osgeo.org/pipermail/grass-user/attachments/20140925/15c0ab71/attachment-0001.html
> >
> >>>
> >>> ------------------------------
> >>>
> >>> Message: 3
> >>> Date: Thu, 25 Sep 2014 12:46:13 +0200
> >>> From: Markus Neteler <neteler at osgeo.org>
> >>> To: Luis Miguel Royo P?rez <luis.miguel.royo at gmail.com>
> >>> Cc: GRASS user list <grass-user at lists.osgeo.org>
> >>> Subject: Re: [GRASS-user] Problems with r.viewshed
> >>> Message-ID:
> >>> <CALFmHhuPb4w+S03JwMEohU0yQaUas+0f65R=
> sVaXsFFEOaTALg at mail.gmail.com>
> >>> Content-Type: text/plain; charset=UTF-8
> >>>
> >>> On Thu, Sep 25, 2014 at 10:35 AM, Luis Miguel Royo P?rez
> >>> <luis.miguel.royo at gmail.com> wrote:
> >>> > Hi everyone,
> >>> >
> >>> > when I try to run r.viewshed the output shows me this:
> >>>
> >>> (in GRASS 6 it is an Addon)
> >>>
> >>> > Nodata value set to -nan
> >>> > rows=198, cols=217, total = 42966
> >>> > In-memory memory usage is 4298336 B (4 MB), max mem
> >>> > allowed=524288000 B(500MB)
> >>> > ***** IN_MEMORY MODE *****
> >>> > Start sweeping.
> >>> > Computing events ...
> >>> > Sorting events...
> >>> > Terminado.
> >>> > Determine visibility...
> >>> > r.viewshed: statusstructure.cpp:73: float
> >>> > get_vertical_angle(Viewpoint, StatusNode, surface_type,
> >>> > int): La declaraci?n `fabs(sn.dist2vp) > 0.001' no se
> >>> > cumple.
> >>> >
> >>> > Anyone has a clue about what it could be happening?
> >>> >
> >>> > I'm using GRASS 6.4.4 in Xubuntu 14.04.
> >>>
> >>> I have backported some fixes from GRASS 7 to the addon in GRASS 6.
> >>> Please reinstall the addon with g.extension and try again.
> >>>
> >>> > I think I must say that a few days ago I installed GRASS 7 but I
> removed it
> >>> > and reinstalled GRASS 6.4.4. Maybe is there any incompatibility?
> >>>
> >>> No, GRASS 6 and 7 can happily live together.
> >>>
> >>> Please let us know if the updated Addon runs ok for you.
> >>>
> >>> Markus
> >>>
> >>>
> >>> ------------------------------
> >>>
> >>> Message: 4
> >>> Date: Thu, 25 Sep 2014 14:11:36 +0200
> >>> From: Luis Miguel Royo P?rez <luis.miguel.royo at gmail.com>
> >>> To: Markus Neteler <neteler at osgeo.org>
> >>> Cc: GRASS user list <grass-user at lists.osgeo.org>
> >>> Subject: Re: [GRASS-user] Problems with r.viewshed
> >>> Message-ID: <54240678.7060005 at gmail.com>
> >>> Content-Type: text/plain; charset="utf-8"; Format="flowed"
> >>>
> >>> I'm sorry but it didn't work.
> >>>
> >>> I have reinstalled the addon but it didn't work, reinstalled GRASS 6.4
> >>> and neither, then installed GRASS7 again, and appears this message:
> >>>
> >>> r.viewshed -b input=Portada at inisig output=visPort
> >>> coordinates=-3.74034324324,42.5352702703 obs_elev=9 tgt_elev=1.75
> >>> max_dist=30000
> >>> Computing events...
> >>> Computing visibility...
> >>> r.viewshed: statusstructure.cpp:73: float
> >>> get_vertical_angle(Viewpoint, StatusNode, surface_type,
> >>> int): La declaraci?n `fabs(sn.dist2vp) > 0.001' no se
> >>> cumple.
> >>>
> >>>
> >>> I will try in another PC.
> >>>
> >>> Thank you for your time.
> >>>
> >>> El 25/09/14 a las #4, Markus Neteler escribi?:
> >>> > On Thu, Sep 25, 2014 at 10:35 AM, Luis Miguel Royo P?rez
> >>> > <luis.miguel.royo at gmail.com> wrote:
> >>> >> Hi everyone,
> >>> >>
> >>> >> when I try to run r.viewshed the output shows me this:
> >>> > (in GRASS 6 it is an Addon)
> >>> >
> >>> >> Nodata value set to -nan
> >>> >> rows=198, cols=217, total = 42966
> >>> >> In-memory memory usage is 4298336 B (4 MB), max mem
> >>> >> allowed=524288000 B(500MB)
> >>> >> ***** IN_MEMORY MODE *****
> >>> >> Start sweeping.
> >>> >> Computing events ...
> >>> >> Sorting events...
> >>> >> Terminado.
> >>> >> Determine visibility...
> >>> >> r.viewshed: statusstructure.cpp:73: float
> >>> >> get_vertical_angle(Viewpoint, StatusNode, surface_type,
> >>> >> int): La declaraci?n `fabs(sn.dist2vp) > 0.001' no se
> >>> >> cumple.
> >>> >>
> >>> >> Anyone has a clue about what it could be happening?
> >>> >>
> >>> >> I'm using GRASS 6.4.4 in Xubuntu 14.04.
> >>> > I have backported some fixes from GRASS 7 to the addon in GRASS 6.
> >>> > Please reinstall the addon with g.extension and try again.
> >>> >
> >>> >> I think I must say that a few days ago I installed GRASS 7 but I
> removed it
> >>> >> and reinstalled GRASS 6.4.4. Maybe is there any incompatibility?
> >>> > No, GRASS 6 and 7 can happily live together.
> >>> >
> >>> > Please let us know if the updated Addon runs ok for you.
> >>> >
> >>> > Markus
> >>>
> >>> -------------- next part --------------
> >>> An HTML attachment was scrubbed...
> >>> URL: <
> http://lists.osgeo.org/pipermail/grass-user/attachments/20140925/edaf5af2/attachment-0001.html
> >
> >>>
> >>> ------------------------------
> >>>
> >>> _______________________________________________
> >>> grass-user mailing list
> >>> grass-user at lists.osgeo.org
> >>> http://lists.osgeo.org/mailman/listinfo/grass-user
> >>>
> >>> End of grass-user Digest, Vol 101, Issue 39
> >>> *******************************************
> >>
> >>
> >>
> >>
> >> --
> >> Pedro Palheiro
> >
> >
> >
> > _______________________________________________
> > grass-user mailing list
> > grass-user at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/grass-user
>
--
Pedro Palheiro
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20140926/17c275d9/attachment.html>
More information about the grass-user
mailing list