Re: Geophysics functions [was Re: [GRASS-user] use pi number]

2008-08-29 Thread Dylan Beaudette
On Thursday 28 August 2008, Paulo Marcondes wrote:
 2008/8/26 José María Michia [EMAIL PROTECTED]:
  I've created a wiki page:
 
  http://grass.osgeo.org/wiki/Gravity
  http://grass.osgeo.org/wiki/Geomagnetism

 I've edited them both. please check.

 Dylan, quite informative pages, thanks. As for the GMT info, it is a
 shame I am not much into GMT, maybe that is a grave fault on my part?

Thanks Paolo. I'll post any new material directly in the wiki. GMT is tough to 
get into, it took me a while to become comfortable with it. I would 
reccommend looking over lots of examples if you are interested in learning.

Cheers,

Dylan

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Soil Resource Laboratory
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University of California at Davis
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Re: Geophysics functions [was Re: [GRASS-user] use pi number]

2008-08-29 Thread Paulo Marcondes
2008/8/29 Dylan Beaudette [EMAIL PROTECTED]:

 Thanks Paolo. I'll post any new material directly in the wiki. GMT is tough to
 get into, it took me a while to become comfortable with it. I would
 reccommend looking over lots of examples if you are interested in learning.

I was just minutes ago talking to a friend, he was showing to me his
stuff done in GMT... really hard.
I guess I'll sometime have to learn it.

-- 
Paulo Marcondes = PU1/PU2PIX
-22.915 -42.224 = GG86jc
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Re: Geophysics functions [was Re: [GRASS-user] use pi number]

2008-08-28 Thread Paulo Marcondes
2008/8/26 José María Michia [EMAIL PROTECTED]:

 I've created a wiki page:

 http://grass.osgeo.org/wiki/Gravity
 http://grass.osgeo.org/wiki/Geomagnetism

I've edited them both. please check.

Dylan, quite informative pages, thanks. As for the GMT info, it is a
shame I am not much into GMT, maybe that is a grave fault on my part?


-- 
Paulo Marcondes = PU1/PU2PIX
-22.915 -42.224 = GG86jc
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Re: Geophysics functions [was Re: [GRASS-user] use pi number]

2008-08-26 Thread José María Michia
2008/8/25 Dylan Beaudette [EMAIL PROTECTED]:
 On Monday 25 August 2008 08:59:33 am Paulo Marcondes wrote:
 2008/8/23 Paulo Marcondes [EMAIL PROTECTED]:
  I have been interested in implementing potential fields function in
  GRASS since long,
  but I don't have the necessary background (I mean, I don't know the
  equations) or the coding skills.

 As for gravity equations, the Geological Survey of Canada has a
 informative page: http://gsc.nrcan.gc.ca/gravity/formulae_e.php


I've created a wiki page:

http://grass.osgeo.org/wiki/Gravity

At this moment, is only a first step. The info is not related directly
to GRASS, but I think that is correct to publish here. I look forward
to working alongside Paulo and others to add more information. Please,
correct me if I wrong

 However, we still don't have an answer to this:
  I would like to know where all these geophysics modules would fit.
  I guess not in the i.* series, maybe in r.grav.* for gravity
  data/functions or r.mag.* for magnetometry data.


 Adding some more support behind geophysical routines / examples in GRASS, here
 is a simple post illustrating some work with magnetic data in GRASS. See the
 link to Stefan Maus' page for detailed descriptions and magnetic models.

 http://casoilresource.lawr.ucdavis.edu/drupal/node/560

I've created another wiki page and published this link:

http://grass.osgeo.org/wiki/Geomagnetism

 Cheers,

 Dylan





 --
 Dylan Beaudette
 Soil Resource Laboratory
 http://casoilresource.lawr.ucdavis.edu/
 University of California at Davis
 530.754.7341
 ___
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 grass-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/grass-user

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Re: Geophysics functions [was Re: [GRASS-user] use pi number]

2008-08-26 Thread Dylan Beaudette
On Tuesday 26 August 2008, José María Michia wrote:
 2008/8/25 Dylan Beaudette [EMAIL PROTECTED]:
  On Monday 25 August 2008 08:59:33 am Paulo Marcondes wrote:
  2008/8/23 Paulo Marcondes [EMAIL PROTECTED]:
   I have been interested in implementing potential fields function in
   GRASS since long,
   but I don't have the necessary background (I mean, I don't know the
   equations) or the coding skills.
 
  As for gravity equations, the Geological Survey of Canada has a
  informative page: http://gsc.nrcan.gc.ca/gravity/formulae_e.php

 I've created a wiki page:

 http://grass.osgeo.org/wiki/Gravity

 At this moment, is only a first step. The info is not related directly
 to GRASS, but I think that is correct to publish here. I look forward
 to working alongside Paulo and others to add more information. Please,
 correct me if I wrong


Thanks. Another person/place to consult are Walter Smith / GMT mailing list.

Cheers,

Dylan



-- 
Dylan Beaudette
Soil Resource Laboratory
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University of California at Davis
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Re: Geophysics functions [was Re: [GRASS-user] use pi number]

2008-08-25 Thread Paulo Marcondes
2008/8/23 Paulo Marcondes [EMAIL PROTECTED]:

 I have been interested in implementing potential fields function in
 GRASS since long,
 but I don't have the necessary background (I mean, I don't know the
 equations) or the coding skills.

As for gravity equations, the Geological Survey of Canada has a
informative page: http://gsc.nrcan.gc.ca/gravity/formulae_e.php

However, we still don't have an answer to this:
 I would like to know where all these geophysics modules would fit.
 I guess not in the i.* series, maybe in r.grav.* for gravity
 data/functions or r.mag.* for magnetometry data.

What do you think?
-- 
Paulo Marcondes = PU1/PU2PIX
-22.915 -42.224 = GG86jc
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Re: Geophysics functions [was Re: [GRASS-user] use pi number]

2008-08-25 Thread Dylan Beaudette
On Monday 25 August 2008 08:59:33 am Paulo Marcondes wrote:
 2008/8/23 Paulo Marcondes [EMAIL PROTECTED]:
  I have been interested in implementing potential fields function in
  GRASS since long,
  but I don't have the necessary background (I mean, I don't know the
  equations) or the coding skills.

 As for gravity equations, the Geological Survey of Canada has a
 informative page: http://gsc.nrcan.gc.ca/gravity/formulae_e.php

 However, we still don't have an answer to this:
  I would like to know where all these geophysics modules would fit.
  I guess not in the i.* series, maybe in r.grav.* for gravity
  data/functions or r.mag.* for magnetometry data.


Adding some more support behind geophysical routines / examples in GRASS, here 
is a simple post illustrating some work with magnetic data in GRASS. See the 
link to Stefan Maus' page for detailed descriptions and magnetic models.

http://casoilresource.lawr.ucdavis.edu/drupal/node/560

Cheers,

Dylan





-- 
Dylan Beaudette
Soil Resource Laboratory
http://casoilresource.lawr.ucdavis.edu/
University of California at Davis
530.754.7341
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Re: Geophysics functions [was Re: [GRASS-user] use pi number]

2008-08-24 Thread Hamish
  I have been interested in implementing potential fields function in
  GRASS since long,
  but I don't have the necessary background (I mean, I don't know the
  equations) or the coding skills.
  However, I can help you test/debug.
 
  Maybe that could be the starting point for me to learn something about
  it. Pointers to interesting sites/books/papers would be nice. =D
 
  At my current job I have access to plenty of datasets
  and experts, so we could use (borrow) further help =]

José wrote:
 Yeah!
 
 I am studing for surveyor. At this moment, I am trying to finish a
 course of geophysics, one of the last courses, focusing on the use of
 GRASS and other free programs (I can send a copy of the presentations
 to you and all interested persons).
 
 I'm using GRASS at very low level, but I wish to get more deeply into
 GRASS. I am thinking about doing my final work in gerophysics (and
 free software of course). Therefore, interesting times very soon.


as always, feel free to add any tips  tricks relating to your research
field to the wiki site:
  http://grass.osgeo.org/wiki/Applications


Hamish





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