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@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 <[email protected]
<mailto:[email protected]>>:
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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 <[email protected] <mailto:[email protected]>>
To: Levente Juh?sz <[email protected]
<mailto:[email protected]>>
Cc: GRASS user list <[email protected]
<mailto:[email protected]>>
Subject: Re: [GRASS-user] removing small lines
Message-ID:
<CALFmHhsJtJ0-=me+c_8o6+y9cta1p-cofd3nemuye30ubmv...@mail.gmail.com <mailto:me%2bc_8o6%[email protected]>>
Content-Type: text/plain; charset=UTF-8
On Wed, Sep 24, 2014 at 4:22 PM, Levente Juh?sz
<[email protected] <mailto:[email protected]>> 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 <
[email protected] <mailto:[email protected]>>
To: [email protected] <mailto:[email protected]>
Subject: [GRASS-user] Problems with r.viewshed
Message-ID: <[email protected]
<mailto:[email protected]>>
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!!!
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Message: 3
Date: Thu, 25 Sep 2014 12:46:13 +0200
From: Markus Neteler <[email protected] <mailto:[email protected]>>
To: Luis Miguel Royo P?rez <[email protected]
<mailto:[email protected]>>
Cc: GRASS user list <[email protected]
<mailto:[email protected]>>
Subject: Re: [GRASS-user] Problems with r.viewshed
Message-ID:
<CALFmHhuPb4w+S03JwMEohU0yQaUas+0f65R=svaxsffeoat...@mail.gmail.com <mailto:[email protected]>>
Content-Type: text/plain; charset=UTF-8
On Thu, Sep 25, 2014 at 10:35 AM, Luis Miguel Royo P?rez
<[email protected] <mailto:[email protected]>>
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 <[email protected]
<mailto:[email protected]>>
To: Markus Neteler <[email protected] <mailto:[email protected]>>
Cc: GRASS user list <[email protected]
<mailto:[email protected]>>
Subject: Re: [GRASS-user] Problems with r.viewshed
Message-ID: <[email protected]
<mailto:[email protected]>>
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@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
> <[email protected] <mailto:[email protected]>>
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
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Pedro Palheiro
