[GRASS-user] Grass-DEV

2011-11-15 Thread Edmondo Elisei
Dear All,
I'm using Grass 6.4.1 on ubuntu 10.10.
I'd install grass-dev: when it will available on the repo?

thanks in advance
best regards
Edmondo Elisei

-- 
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*utenza Skype: edmondo-skype*
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Re: [GRASS-user] video

2011-11-15 Thread Michael Barton
Thanks. Will try.

Michael

C. Michael Barton
Director, Center for Social Dynamics & Complexity 
Professor of Anthropology, School of Human Evolution & Social Change
Arizona State University

voice:  480-965-6262 (SHESC), 480-727-9746 (CSDC)
fax:  480-965-7671 (SHESC),  480-727-0709 (CSDC)
www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu











On Nov 15, 2011, at 5:03 PM, Hamish wrote:

> Markus wrote:
 - low res: no idea how to download from youtube
> Hamish:
>>> try youtube-dl from the linux command line.
>>> 
>>> http://rg3.github.com/youtube-dl/
>>> http://packages.debian.org/youtube-dl
>>> 
>>> then you get a .flv file which VLC & alikes are
>>> happy to play.
> Michael:
>> S'pose that would work if I used
>> Linux regularly. Maybe available on the Mac?
> 
> "youtube-dl is a small command-line program to download videos from 
> YouTube.com and a few more sites. It requires the Python interpreter, version 
> 2.x (x being at least 5), and it is not platform specific. It should work in 
> your Unix box, in Windows or in Mac OS X. It is released to the public 
> domain, which means you can modify it, redistribute it or use it however you 
> like."
> 
> I tends to break every time youtube changes its
> web interface, but there's usually a new version
> of youtube-dl which follows soon after.
> 
> There are a number of firefox addons for doing
> similar things.
> 
> 
> for a completely unrelated + OT, but similar
> scraping tool see also "fetchyahoo.pl" for yahoo
> mail users who want to back up their webmail to a
> local mbox file.
> 
> 
> H

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[GRASS-user] measuring area on a 3d polygon

2011-11-15 Thread maning sambale
Hi,

I have a series polygons located in a mountainous terrain.  I can
convert the 2d vector into 2.5d using v.drape and a DEM, however, it
only converts 2D vector point or line data and not areas.  My task is
to calculate the area in hectares of the polygon incorporating the
elevation/surface of the polygon.  I then need to subdivide the main
polygon into smaller polygons using a preferred area in hectares.

How to calculate 2.5d polygon areas in grass?

-- 
cheers,
maning
--
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blog: http://epsg4253.wordpress.com/
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Re: [GRASS-user] Re: GRASS GIS development visualization from 1999 to 2011

2011-11-15 Thread Hamish
Markus Neteler wrote:
> Music suggestions welcome, so we can add that as
> well.

demux the GRASS theme song soundtrack from the '87
CERL movie.

:)

Hamish

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Re: [GRASS-user] legend scientific format

2011-11-15 Thread Hamish
Salvatore:
> I want to generate a map legend  with number
> in scientific format. (I have number like
> 1.0E+14 and in the legend appear like
> 100)…

oh yeah, a quick work-around thanks to Dylan:

the values you specify with the d.legend use=
option will appear verbatim on the screen. It means
you have to decide a series of class thresholds
instead of using a smooth legend, but gets the job
done.

see wish #1147; this was designed for use with log
scale data.


Hamish
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Re: [GRASS-user] legend scientific format

2011-11-15 Thread Hamish
Salvatore:
> > I want to generate a map legend  with number in
> > scientific format. (I have number like 1.0E+14
> and in the legend appear like 100)…

MarkusN:
> Do you use d.legend?
> 
> http://grass.osgeo.org/grass64/manuals/html64_user/d.legend.html
> "The text produced from floating-point raster maps will
> automatically create
> output with a meaningful number of significant digits. For
> very small values,
> numbers will be expressed in scientific notation, e.g.
> "1.7e-9".
> "
> 
> Perhaps that should be likewise implemented for
> very large numbers, too?


It is based on the data's range.

for the morbidly curious, 

/* determine how many significant digits to display based on range */
if (0 == (dmax - dmin)) /* trap divide by 0 for single value rasters */
sprintf(DispFormat, "%%f");
else {
SigDigits = (int)ceil(log10(fabs(25 / (dmax - dmin;
if (SigDigits < 0)
SigDigits = 0;
if (SigDigits < 7)
sprintf(DispFormat, "%%.%df", SigDigits);
else
sprintf(DispFormat, "%%.2g");   /* eg 4.2e-9  */
}


The idea being that if the legend range is 1e6 to
-1e6 it just clutters the page to show so many
digits.

At the time I wrote that code I was using r.sun a
lot, so I'll go back and see what the old annual
solar irradiation plots were looking like, as those
numbers get pretty big too.

What threshold to use for the switchover to sci/eng
format? >=10million?


Hamish

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Re: [GRASS-user] video

2011-11-15 Thread Hamish
Markus wrote:
> >> - low res: no idea how to download from youtube
Hamish:
> > try youtube-dl from the linux command line.
> > 
> > http://rg3.github.com/youtube-dl/
> > http://packages.debian.org/youtube-dl
> > 
> > then you get a .flv file which VLC & alikes are
> > happy to play.
Michael:
> S'pose that would work if I used
> Linux regularly. Maybe available on the Mac?

"youtube-dl is a small command-line program to download videos from YouTube.com 
and a few more sites. It requires the Python interpreter, version 2.x (x being 
at least 5), and it is not platform specific. It should work in your Unix box, 
in Windows or in Mac OS X. It is released to the public domain, which means you 
can modify it, redistribute it or use it however you like."

I tends to break every time youtube changes its
web interface, but there's usually a new version
of youtube-dl which follows soon after.

There are a number of firefox addons for doing
similar things.


for a completely unrelated + OT, but similar
scraping tool see also "fetchyahoo.pl" for yahoo
mail users who want to back up their webmail to a
local mbox file.


H
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Re: [GRASS-user] video

2011-11-15 Thread Michael Barton
S'pose that would work if I used Linux regularly. Maybe available on the Mac?

Michael

C. Michael Barton
Director, Center for Social Dynamics & Complexity 
Professor of Anthropology, School of Human Evolution & Social Change
Arizona State University

voice:  480-965-6262 (SHESC), 480-727-9746 (CSDC)
fax:  480-965-7671 (SHESC),  480-727-0709 (CSDC)
www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu











On Nov 15, 2011, at 4:45 PM, Hamish wrote:

> Markus wrote:
>> - low res: no idea how to download from youtube
> 
> try youtube-dl from the linux command line.
> 
> http://rg3.github.com/youtube-dl/
> http://packages.debian.org/youtube-dl
> 
> then you get a .flv file which VLC & alikes are
> happy to play.
> 
> 
> probably better to re-encode ourselves from the
> original source than re-encode youtube's reencoding
> though.
> 
> I'm no expert with `transcode` or `ffmpeg`, which
> may be better suited for the task, but in the past
> I've used mencoder to do it, e.g. for a 720px wide
> result from (much larger) sequential png plot
> frames, the command is like:
> 
> mencoder "mf://frame_*.png" -mf "type=png:fps=2" -o movie.avi \
> -vf scale -zoom -xy 720 -ovc "x264" -x264encopts "pass=3" \
> -x264encopts "preset=veryslow" -x264encopts "tune=animation"
> 
> 
> Hamish

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Re: [GRASS-user] video

2011-11-15 Thread Hamish
Markus wrote:
> - low res: no idea how to download from youtube

try youtube-dl from the linux command line.

http://rg3.github.com/youtube-dl/
http://packages.debian.org/youtube-dl

then you get a .flv file which VLC & alikes are
happy to play.


probably better to re-encode ourselves from the
original source than re-encode youtube's reencoding
though.

I'm no expert with `transcode` or `ffmpeg`, which
may be better suited for the task, but in the past
I've used mencoder to do it, e.g. for a 720px wide
result from (much larger) sequential png plot
frames, the command is like:

mencoder "mf://frame_*.png" -mf "type=png:fps=2" -o movie.avi \
-vf scale -zoom -xy 720 -ovc "x264" -x264encopts "pass=3" \
-x264encopts "preset=veryslow" -x264encopts "tune=animation"


Hamish
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Re: [GRASS-user] Re: GRASS GIS development visualization

2011-11-15 Thread Markus Neteler
On Tue, Nov 15, 2011 at 6:04 PM, Alexander Muriy  wrote:
> To download from Youtube: Firefox with "Flash Got" plugin or something
> similar. Also in Linux: youtube-dl, clive.

Note: Soon we'll have a higher res annotated version online for download.

Cheers
Markus
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Re: [GRASS-user] Alternative to r.stats to generate % of surface

2011-11-15 Thread Marcello Gorini
See? I knew there was a much better way :)



On Tue, Nov 15, 2011 at 2:29 PM, Michael Barton wrote:

> Use r.report.
>
> This will do exactly what you want and output to a file too.
>
> Michael
> 
> C. Michael Barton
> Director, Center for Social Dynamics & Complexity
> Professor of Anthropology, School of Human Evolution & Social Change
> Arizona State University
>
> voice:  480-965-6262 (SHESC), 480-727-9746 (CSDC)
> fax:  480-965-7671 (SHESC),  480-727-0709 (CSDC)
> www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu
>
>
>
>
>
>
>
>
>
>
>
> On Nov 16, 2011, at 2:58 PM,  wrote:
>
> > Date: Tue, 15 Nov 2011 11:36:12 +
> > From: Helena Herrera 
> > Subject: [GRASS-user] Alternative to r.stats to generate % of surface
> > To: grass-user@lists.osgeo.org
> > Message-ID:
> > 0zkdhsy97khfi9n...@mail.gmail.com>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > Greetings
> >
> > I want to calculte % of surface in a raster map for each Integer class
> > value. The thing is that I'm, using r.stats but the sum % values is
> always
> > much more (104 or 102 or 105). Is there any other (more precised) method
> to
> > calculate this ?
> > THanks
> > Helena
>
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[GRASS-user] Re: GRASS GIS development visualization

2011-11-15 Thread Alexander Muriy
To download from Youtube: Firefox with "Flash Got" plugin or something
similar. Also in Linux: youtube-dl,
clive .


Message: 1
> Date: Mon, 14 Nov 2011 19:32:10 -0700
> From: Michael Barton 
> Subject: [GRASS-user] video
> To: "grass-user@lists.osgeo.org" 
> Message-ID: <6f076750-0140-4b9d-96cb-b84cab697...@asu.edu>
> Content-Type: text/plain; charset=us-ascii
>
> Markus,
>
> Is there a way to download the low and hires versions of this video?
>
> Michael
> 
> C. Michael Barton
> Director, Center for Social Dynamics & Complexity
> Professor of Anthropology, School of Human Evolution & Social Change
> Arizona State University
>
>
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Re: [GRASS-user] Question about "Generating PNG from display" functionality

2011-11-15 Thread Michael Barton
Use ps.map 

You can use the new cartographic composer module from the GUI and create a 
ps.map script to get started. Then you can just call the script from the 
command line, substituting different input maps.

Michael

C. Michael Barton
Director, Center for Social Dynamics & Complexity 
Professor of Anthropology, School of Human Evolution & Social Change
Arizona State University

voice:  480-965-6262 (SHESC), 480-727-9746 (CSDC)
fax:  480-965-7671 (SHESC),  480-727-0709 (CSDC)
www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu











On Nov 16, 2011, at 2:58 PM,  wrote:

> Date: Tue, 15 Nov 2011 14:03:33 +
> From: Ant?nio Rocha 
> Subject: [GRASS-user] Question about "Generating PNG from display"
>functionality
> To: GRASS user list 
> Message-ID: <4ec27135.5040...@deimos.com.pt>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> Greetings
> 
> I want to generate a PNG from what is being displayed in Map Display
> Window (raster+vector+scale bar) but I want to generate a file in a
> specific size (HxW) that is different from the one that this tool
> suggests me. What happens is that the scale bar/north arrow is removed.
> but when I try with the size that the tool suggests me it is plotted
> with the scalebar/northarrow
> 
> Second question: can I generate this from command line?
> Thanks
> Antonio

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Re: [GRASS-user] Alternative to r.stats to generate % of surface

2011-11-15 Thread Michael Barton
Use r.report. 

This will do exactly what you want and output to a file too.

Michael

C. Michael Barton
Director, Center for Social Dynamics & Complexity 
Professor of Anthropology, School of Human Evolution & Social Change
Arizona State University

voice:  480-965-6262 (SHESC), 480-727-9746 (CSDC)
fax:  480-965-7671 (SHESC),  480-727-0709 (CSDC)
www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu











On Nov 16, 2011, at 2:58 PM,  wrote:

> Date: Tue, 15 Nov 2011 11:36:12 +
> From: Helena Herrera 
> Subject: [GRASS-user] Alternative to r.stats to generate % of surface
> To: grass-user@lists.osgeo.org
> Message-ID:
>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Greetings
> 
> I want to calculte % of surface in a raster map for each Integer class
> value. The thing is that I'm, using r.stats but the sum % values is always
> much more (104 or 102 or 105). Is there any other (more precised) method to
> calculate this ?
> THanks
> Helena

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Re: [GRASS-user] video

2011-11-15 Thread Michael Barton
Maybe I missed it, but the only link I saw was for the html. No mp3. This 
promoted my query.

Michael

C. Michael Barton
Director, Center for Social Dynamics & Complexity 
Professor of Anthropology, School of Human Evolution & Social Change
Arizona State University

voice:  480-965-6262 (SHESC), 480-727-9746 (CSDC)
fax:  480-965-7671 (SHESC),  480-727-0709 (CSDC)
www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu











On Nov 15, 2011, at 12:10 AM, Markus Neteler wrote:

> Michael,
> 
> yes and no|yes:
> - high res version: see link on GRASS Wiki page (and youtube page),
>  it is located on Martin's server
> - low res: no idea how to download from youtube
> 
> Once we are done to annotate also the highres version, we can
> do a low-res from that and also store on Martin's server.
> 
> Markus
> 
> On Tue, Nov 15, 2011 at 3:32 AM, Michael Barton  
> wrote:
>> Markus,
>> 
>> Is there a way to download the low and hires versions of this video?
>> 
>> Michael
>> 
>> C. Michael Barton
>> Director, Center for Social Dynamics & Complexity
>> Professor of Anthropology, School of Human Evolution & Social Change
>> Arizona State University
>> 
>> voice:  480-965-6262 (SHESC), 480-727-9746 (CSDC)
>> fax:  480-965-7671 (SHESC),  480-727-0709 (CSDC)
>> www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> On Nov 16, 2011, at 12:34 AM,  wrote:
>> 
>>> Date: Mon, 14 Nov 2011 18:30:17 +0100
>>> From: Markus Neteler 
>>> Subject: [GRASS-user] Re: GRASS GIS development visualization from
>>>   1999 to 2011
>>> To: GRASS user list 
>>> Message-ID:
>>>   
>>> Content-Type: text/plain; charset=ISO-8859-1
>>> 
>>> On Fri, Nov 11, 2011 at 4:19 PM, Markus Neteler  wrote:
 I have created a video of the GRASS GIS development from 1999 to 2011:
 http://grass.osgeo.org/wiki/GRASS_development_visualization
 
 Enjoy
 Markus
 
 PS: It is on youtube, http://www.youtube.com/watch?v=suyDqmGXoWk
>>> 
>>> I have now annotated the film with some explanations.
>>> 
>>> The high-res version will be annotated, too. Music suggestions welcome,
>>> so we can add that as well.
>>> 
>>> Cheers
>>> Markus
>> 
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>> 

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[GRASS-user] Question about "Generating PNG from display" functionality

2011-11-15 Thread António Rocha

Greetings

I want to generate a PNG from what is being displayed in Map Display 
Window (raster+vector+scale bar) but I want to generate a file in a 
specific size (HxW) that is different from the one that this tool 
suggests me. What happens is that the scale bar/north arrow is removed. 
but when I try with the size that the tool suggests me it is plotted 
with the scalebar/northarrow


Second question: can I generate this from command line?
Thanks
Antonio


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[GRASS-user] Using GRASS to compose displays

2011-11-15 Thread Luisa Peña
Greetings

I would like to define a composer template (e.g. scale always in the same
place; north arrow also) and to export the generated compositions to
JPEG/PNG. is this possible with GRASS?
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Re: [GRASS-user] Alternative to r.stats to generate % of surface

2011-11-15 Thread Rainer M Krug
On Tue, Nov 15, 2011 at 1:35 PM, Marcello Gorini  wrote:

> Hi Helena,
>
> I have come to the same problem and solved it with ugly and very specific
> shell scripts. There is most certainly a better way within GRASS and no
> doubt you can code it much better in Shell, but anyway, this may get you
> going somehow.
>
> Code snippet:
>
> MAP=$1
>
> g.region rast=$MAP
> max_cats=9
> file=true_percentages.txt
> rm $file
>
> tot=$(r.univar $MAP | grep "^n: " | awk '{print $2}')
> r.stats -cn $MAP > stats.txt
>
> cats=1
> while [ $cats -le $max_cats ]; do
>
> ncat="`head -$cats stats.txt | tail -1 | awk '{print $2}'`"
> cat="`head -$cats stats.txt | tail -1 | awk '{print $1}'`"
> perc="`echo $tot $ncat | awk '{printf("%.5f", $2 / $1 * 100);}'`"
>
> echo $cat $perc >> $file
>
> cats="$(expr $cats + 1)"
>
> done
>
> I wanted everything in text files, so I generated these stats.txt and
> true_percentages.txt. The idea of the script is to use the actual cell
> count given by r.stats -cn and divide it by the total count given by
> r.univar.
>
> Note that this script is very specific and only work for categories that
> are incremented by 1. In my case, they go from 1 to 9.
>
> How brave I am to publicize such an ugly script, huh? :) The result sums
> up to 1 at least. Just give the name of the categorical map as input.
>
> Hope it helps somehow.
>

What about the -c flag for r.stats? You will get the cell count and can
calculate the percentage yourself.

Rainer


>
> Marcello.
>
>
>
> On Tue, Nov 15, 2011 at 9:36 AM, Helena Herrera <
> helenaherrera1...@gmail.com> wrote:
>
>> Greetings
>>
>> I want to calculte % of surface in a raster map for each Integer class
>> value. The thing is that I'm, using r.stats but the sum % values is always
>> much more (104 or 102 or 105). Is there any other (more precised) method to
>> calculate this ?
>> THanks
>> Helena
>>
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>>
>>
>
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>
>


-- 
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UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel :   +33 - (0)9 53 10 27 44
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Re: [GRASS-user] Alternative to r.stats to generate % of surface

2011-11-15 Thread Marcello Gorini
Hi Helena,

I have come to the same problem and solved it with ugly and very specific
shell scripts. There is most certainly a better way within GRASS and no
doubt you can code it much better in Shell, but anyway, this may get you
going somehow.

Code snippet:

MAP=$1

g.region rast=$MAP
max_cats=9
file=true_percentages.txt
rm $file

tot=$(r.univar $MAP | grep "^n: " | awk '{print $2}')
r.stats -cn $MAP > stats.txt

cats=1
while [ $cats -le $max_cats ]; do

ncat="`head -$cats stats.txt | tail -1 | awk '{print $2}'`"
cat="`head -$cats stats.txt | tail -1 | awk '{print $1}'`"
perc="`echo $tot $ncat | awk '{printf("%.5f", $2 / $1 * 100);}'`"

echo $cat $perc >> $file

cats="$(expr $cats + 1)"

done

I wanted everything in text files, so I generated these stats.txt and
true_percentages.txt. The idea of the script is to use the actual cell
count given by r.stats -cn and divide it by the total count given by
r.univar.

Note that this script is very specific and only work for categories that
are incremented by 1. In my case, they go from 1 to 9.

How brave I am to publicize such an ugly script, huh? :) The result sums up
to 1 at least. Just give the name of the categorical map as input.

Hope it helps somehow.

Marcello.



On Tue, Nov 15, 2011 at 9:36 AM, Helena Herrera  wrote:

> Greetings
>
> I want to calculte % of surface in a raster map for each Integer class
> value. The thing is that I'm, using r.stats but the sum % values is always
> much more (104 or 102 or 105). Is there any other (more precised) method to
> calculate this ?
> THanks
> Helena
>
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>
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[GRASS-user] Alternative to r.stats to generate % of surface

2011-11-15 Thread Helena Herrera
Greetings

I want to calculte % of surface in a raster map for each Integer class
value. The thing is that I'm, using r.stats but the sum % values is always
much more (104 or 102 or 105). Is there any other (more precised) method to
calculate this ?
THanks
Helena
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Re: [GRASS-user] Re: GRASS GIS development visualization from 1999 to 2011

2011-11-15 Thread Marcello Gorini
FANTASTIC, AMAZING, INSANE!!

Just a few words to describe this video!

Congratulations!!



On Mon, Nov 14, 2011 at 3:30 PM, Markus Neteler  wrote:

> On Fri, Nov 11, 2011 at 4:19 PM, Markus Neteler  wrote:
> > I have created a video of the GRASS GIS development from 1999 to 2011:
> > http://grass.osgeo.org/wiki/GRASS_development_visualization
> >
> > Enjoy
> > Markus
> >
> > PS: It is on youtube, http://www.youtube.com/watch?v=suyDqmGXoWk
>
> I have now annotated the film with some explanations.
>
> The high-res version will be annotated, too. Music suggestions welcome,
> so we can add that as well.
>
> Cheers
> Markus
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