<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif">Hello Luis,<br><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">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.<br><br>r.viewshed -b input=Portada@inisig output=visPort<br>
<b>coordinates=-3.74034324324,42.5352702703</b> <br>obs_elev=9 tgt_elev=1.75<br><div id=":tc" class="">
max_dist=30000<br>
Computing events...<br>
Computing visibility...<br>
r.viewshed: statusstructure.cpp:73: float<br>
get_vertical_angle(Viewpoint, StatusNode, surface_type,<br>
int): La declaraci?n `<b>fabs(sn.dist2vp) > 0.001</b>' no se<br>
cumple.</div><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">Adios,<br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">Pedro Palheiro<br></div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div><div class="gmail_extra"><br><div class="gmail_quote">2014-09-25 20:00 GMT+01:00 <span dir="ltr"><<a href="mailto:grass-user-request@lists.osgeo.org" target="_blank">grass-user-request@lists.osgeo.org</a>></span>:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Send grass-user mailing list submissions to<br>
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Today's Topics:<br>
<br>
1. Re: removing small lines (Markus Neteler)<br>
2. Problems with r.viewshed (Luis Miguel Royo P?rez)<br>
3. Re: Problems with r.viewshed (Markus Neteler)<br>
4. Re: Problems with r.viewshed (Luis Miguel Royo P?rez)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Thu, 25 Sep 2014 10:25:25 +0200<br>
From: Markus Neteler <<a href="mailto:neteler@osgeo.org">neteler@osgeo.org</a>><br>
To: Levente Juh?sz <<a href="mailto:jlevente89@gmail.com">jlevente89@gmail.com</a>><br>
Cc: GRASS user list <<a href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a>><br>
Subject: Re: [GRASS-user] removing small lines<br>
Message-ID:<br>
<CALFmHhsJtJ0-=<a href="mailto:me%2BC_8o6%2BY9CTA1P-cofD3NemuyE30uBmvF5Q@mail.gmail.com">me+C_8o6+Y9CTA1P-cofD3NemuyE30uBmvF5Q@mail.gmail.com</a>><br>
Content-Type: text/plain; charset=UTF-8<br>
<br>
On Wed, Sep 24, 2014 at 4:22 PM, Levente Juh?sz <<a href="mailto:jlevente89@gmail.com">jlevente89@gmail.com</a>> wrote:<br>
> Hi all,<br>
><br>
> I've seen that the remove_small method of v.generalize has been eliminated.<br>
> Reduction method does not work in the way I want since it just removes point<br>
> from lines and it seems like has no effect on a line of 2 points - even if<br>
> they're smaller than the threshold.<br>
> Can someone tell me what the workaround is for removing small lines from a<br>
> vector for example by a threshold in map units?<br>
<br>
<br>
You may use v.to.db and option=length (line length), then use<br>
v.extract to extract into a new map according to a threshold you need.<br>
<br>
Markus<br>
<br>
<br>
------------------------------<br>
<br>
Message: 2<br>
Date: Thu, 25 Sep 2014 10:35:52 +0200<br>
From: Luis Miguel Royo P?rez <<a href="mailto:luis.miguel.royo@gmail.com"><div class="gmail_default" style="font-family:tahoma,sans-serif;display:inline"></div>luis.miguel.royo@gmail.com</a>><br>
To: <a href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a><br>
Subject: [GRASS-user] Problems with r.viewshed<br>
Message-ID: <<a href="mailto:5423D3E8.5090206@gmail.com">5423D3E8.5090206@gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"; Format="flowed"<br>
<br>
Hi everyone,<br>
<br>
when I try to run r.viewshed the output shows me this:<br>
<br>
Nodata value set to -nan<br>
rows=198, cols=217, total = 42966<br>
In-memory memory usage is 4298336 B (4 MB), max mem<br>
allowed=524288000 B(500MB)<br>
***** IN_MEMORY MODE *****<br>
Start sweeping.<br>
Computing events ...<br>
Sorting events...<br>
Terminado.<br>
Determine visibility...<br>
r.viewshed: statusstructure.cpp:73: float<br>
get_vertical_angle(Viewpoint, StatusNode, surface_type,<br>
int): La declaraci?n `fabs(sn.dist2vp) > 0.001' no se<br>
cumple.<br>
<br>
Anyone has a clue about what it could be happening?<br>
<br>
I'm using GRASS 6.4.4 in Xubuntu 14.04.<br>
<br>
I think I must say that a few days ago I installed GRASS 7 but I removed<br>
it and reinstalled GRASS 6.4.4. Maybe is there any incompatibility?<br>
<br>
<br>
Thanks a lot!!!<br>
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<br>
Message: 3<br>
Date: Thu, 25 Sep 2014 12:46:13 +0200<br>
From: Markus Neteler <<a href="mailto:neteler@osgeo.org">neteler@osgeo.org</a>><br>
To: Luis Miguel Royo P?rez <<a href="mailto:luis.miguel.royo@gmail.com">luis.miguel.royo@gmail.com</a>><br>
Cc: GRASS user list <<a href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a>><br>
Subject: Re: [GRASS-user] Problems with r.viewshed<br>
Message-ID:<br>
<CALFmHhuPb4w+S03JwMEohU0yQaUas+0f65R=<a href="mailto:sVaXsFFEOaTALg@mail.gmail.com">sVaXsFFEOaTALg@mail.gmail.com</a>><br>
Content-Type: text/plain; charset=UTF-8<br>
<br>
On Thu, Sep 25, 2014 at 10:35 AM, Luis Miguel Royo P?rez<br>
<<a href="mailto:luis.miguel.royo@gmail.com">luis.miguel.royo@gmail.com</a>> wrote:<br>
> Hi everyone,<br>
><br>
> when I try to run r.viewshed the output shows me this:<br>
<br>
(in GRASS 6 it is an Addon)<br>
<br>
> Nodata value set to -nan<br>
> rows=198, cols=217, total = 42966<br>
> In-memory memory usage is 4298336 B (4 MB), max mem<br>
> allowed=524288000 B(500MB)<br>
> ***** IN_MEMORY MODE *****<br>
> Start sweeping.<br>
> Computing events ...<br>
> Sorting events...<br>
> Terminado.<br>
> Determine visibility...<br>
> r.viewshed: statusstructure.cpp:73: float<br>
> get_vertical_angle(Viewpoint, StatusNode, surface_type,<br>
> int): La declaraci?n `fabs(sn.dist2vp) > 0.001' no se<br>
> cumple.<br>
><br>
> Anyone has a clue about what it could be happening?<br>
><br>
> I'm using GRASS 6.4.4 in Xubuntu 14.04.<br>
<br>
I have backported some fixes from GRASS 7 to the addon in GRASS 6.<br>
Please reinstall the addon with g.extension and try again.<br>
<br>
> I think I must say that a few days ago I installed GRASS 7 but I removed it<br>
> and reinstalled GRASS 6.4.4. Maybe is there any incompatibility?<br>
<br>
No, GRASS 6 and 7 can happily live together.<br>
<br>
Please let us know if the updated Addon runs ok for you.<br>
<br>
Markus<br>
<br>
<br>
------------------------------<br>
<br>
Message: 4<br>
Date: Thu, 25 Sep 2014 14:11:36 +0200<br>
From: Luis Miguel Royo P?rez <<a href="mailto:luis.miguel.royo@gmail.com">luis.miguel.royo@gmail.com</a>><br>
To: Markus Neteler <<a href="mailto:neteler@osgeo.org">neteler@osgeo.org</a>><br>
Cc: GRASS user list <<a href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a>><br>
Subject: Re: [GRASS-user] Problems with r.viewshed<br>
Message-ID: <<a href="mailto:54240678.7060005@gmail.com">54240678.7060005@gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"; Format="flowed"<br>
<br>
I'm sorry but it didn't work.<br>
<br>
I have reinstalled the addon but it didn't work, reinstalled GRASS 6.4<br>
and neither, then installed GRASS7 again, and appears this message:<br>
<br>
r.viewshed -b input=Portada@inisig output=visPort<br>
coordinates=-3.74034324324,42.5352702703 obs_elev=9 tgt_elev=1.75<br>
max_dist=30000<br>
Computing events...<br>
Computing visibility...<br>
r.viewshed: statusstructure.cpp:73: float<br>
get_vertical_angle(Viewpoint, StatusNode, surface_type,<br>
int): La declaraci?n `fabs(sn.dist2vp) > 0.001' no se<br>
cumple.<br>
<br>
<br>
I will try in another PC.<br>
<br>
Thank you for your time.<br>
<br>
El 25/09/14 a las #4, Markus Neteler escribi?:<br>
> On Thu, Sep 25, 2014 at 10:35 AM, Luis Miguel Royo P?rez<br>
> <<a href="mailto:luis.miguel.royo@gmail.com">luis.miguel.royo@gmail.com</a>> wrote:<br>
>> Hi everyone,<br>
>><br>
>> when I try to run r.viewshed the output shows me this:<br>
> (in GRASS 6 it is an Addon)<br>
><br>
>> Nodata value set to -nan<br>
>> rows=198, cols=217, total = 42966<br>
>> In-memory memory usage is 4298336 B (4 MB), max mem<br>
>> allowed=524288000 B(500MB)<br>
>> ***** IN_MEMORY MODE *****<br>
>> Start sweeping.<br>
>> Computing events ...<br>
>> Sorting events...<br>
>> Terminado.<br>
>> Determine visibility...<br>
>> r.viewshed: statusstructure.cpp:73: float<br>
>> get_vertical_angle(Viewpoint, StatusNode, surface_type,<br>
>> int): La declaraci?n `fabs(sn.dist2vp) > 0.001' no se<br>
>> cumple.<br>
>><br>
>> Anyone has a clue about what it could be happening?<br>
>><br>
>> I'm using GRASS 6.4.4 in Xubuntu 14.04.<br>
> I have backported some fixes from GRASS 7 to the addon in GRASS 6.<br>
> Please reinstall the addon with g.extension and try again.<br>
><br>
>> I think I must say that a few days ago I installed GRASS 7 but I removed it<br>
>> and reinstalled GRASS 6.4.4. Maybe is there any incompatibility?<br>
> No, GRASS 6 and 7 can happily live together.<br>
><br>
> Please let us know if the updated Addon runs ok for you.<br>
><br>
> Markus<br>
<br>
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</blockquote></div><br><br clear="all"><br>-- <br><div>Pedro Palheiro</div>
</div></div>