[GRASSLIST:3453] Hello

Nico_Coetzee · May 20, 2004, 3:44pm

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Hi all,

First of all - I am an *extreme* newbie with anything related to GIS, but I am
very keen on learning a lot about this subject, mainly for personal reasons.

I am now in the process of looking for the right software to start of with,
and since I am a Linux user, it seems all people end up recommending GRASS,
so - here I am

I am still in the installation phase of GRASS, but I thought it might be a
good idea at this stage to ask about obtaining data from external sources. At
this stage I am particularly interested in data from the following sites:

1) http://www.georigin.com/ - Contain datasets related to African countries

2) http://edc.usgs.gov/products/elevation/gtopo30.html and
http://lpdaac.usgs.gov/gtopo30/gtopo30.asp (essentially the same ORG) -
GTOP30 data sets related to Southern Africa

It seems from what I have read that I would be able to use the GTOP30 data,
although if there are any people that has some input here, I will greatly
apprciate it !

The problem really is with the first site (georigin.com). I can download the
data I'm interested in in one of the following formats: Asset, Planet or
MapInfo. As you can see from this site, one of the links they obtained there
data from refers eventually to a site in the usgs.gov domain - which make me
belief the data might actually be in GTOP30 format or something similar.

Has anyone worked with this data yet? Any tips/pointers?

Thanks a lot - I hope you don't mind a lot of questions

Cheers

Nico Coetzee
South Africa

- --
Murphy's Law of Research:
Enough research will tend to support your theory.

BOFH excuse :

bugs in the RAID
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Maciek_Sieczka · May 20, 2004, 9:15pm

a suggestion on sources of data for Africa

for some time now there are African 90m (3 arcsec) elevation SRTM data
available at http://edcftp.cr.usgs.gov/pub/data/srtm/ for free
there is also Markus Neteler' s script for loading them into Grass available
somewhere on the net, Google it
(though honestly I haven't tried it yet :))

----- Original Message -----
From: "Nico Coetzee" <ncoetzee1@fnb.co.za>
To: <GRASSLIST@baylor.edu>
Sent: Thursday, May 20, 2004 5:44 PM
Subject: [GRASSLIST:3453] Hello

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi all,

First of all - I am an *extreme* newbie with anything related to GIS, but

I am

very keen on learning a lot about this subject, mainly for personal

reasons.

I am now in the process of looking for the right software to start of

with,

and since I am a Linux user, it seems all people end up recommending

GRASS,

so - here I am

I am still in the installation phase of GRASS, but I thought it might be a
good idea at this stage to ask about obtaining data from external sources.

At

this stage I am particularly interested in data from the following sites:

1) http://www.georigin.com/ - Contain datasets related to African

countries

2) http://edc.usgs.gov/products/elevation/gtopo30.html and
http://lpdaac.usgs.gov/gtopo30/gtopo30.asp (essentially the same ORG) -
GTOP30 data sets related to Southern Africa

It seems from what I have read that I would be able to use the GTOP30

data,

although if there are any people that has some input here, I will greatly
apprciate it !

The problem really is with the first site (georigin.com). I can download

the

data I'm interested in in one of the following formats: Asset, Planet or
MapInfo. As you can see from this site, one of the links they obtained

there

data from refers eventually to a site in the usgs.gov domain - which make

me

belief the data might actually be in GTOP30 format or something similar.

Has anyone worked with this data yet? Any tips/pointers?

Thanks a lot - I hope you don't mind a lot of questions

Cheers

Nico Coetzee
South Africa

- --
Murphy's Law of Research:
Enough research will tend to support your theory.

BOFH excuse :

bugs in the RAID
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Version: GnuPG v1.2.1 (GNU/Linux)

iD8DBQFArNJUlXERkPl0klQRAkk7AKCIdKs/Vy+6JIJsfYS5+u5TAC4cpQCeN7yo
Z9jvJPkYKBUhu6Cl/v9PDis=
=FWng
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Markus_Neteler1 · May 21, 2004, 8:00am

On Thu, May 20, 2004 at 11:15:22PM +0200, Maciek Sieczka wrote:

a suggestion on sources of data for Africa

for some time now there are African 90m (3 arcsec) elevation SRTM data
available at http://edcftp.cr.usgs.gov/pub/data/srtm/ for free
there is also Markus Neteler' s script for loading them into Grass available
somewhere on the net, Google it
(though honestly I haven't tried it yet :))

I did

http://mpa.itc.it/rs/srtm/

In CVS the r.fillnulls/RST is also functional now.

Markus

----- Original Message -----
From: "Nico Coetzee" <ncoetzee1@fnb.co.za>
To: <GRASSLIST@baylor.edu>
Sent: Thursday, May 20, 2004 5:44 PM
Subject: [GRASSLIST:3453] Hello

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
>
> Hi all,
>
> First of all - I am an *extreme* newbie with anything related to GIS, but
I am
> very keen on learning a lot about this subject, mainly for personal
reasons.
>
> I am now in the process of looking for the right software to start of
with,
> and since I am a Linux user, it seems all people end up recommending
GRASS,
> so - here I am
>
> I am still in the installation phase of GRASS, but I thought it might be a
> good idea at this stage to ask about obtaining data from external sources.
At
> this stage I am particularly interested in data from the following sites:
>
> 1) http://www.georigin.com/ - Contain datasets related to African
countries
>
> 2) http://edc.usgs.gov/products/elevation/gtopo30.html and
> http://lpdaac.usgs.gov/gtopo30/gtopo30.asp (essentially the same ORG) -
> GTOP30 data sets related to Southern Africa
>
> It seems from what I have read that I would be able to use the GTOP30
data,
> although if there are any people that has some input here, I will greatly
> apprciate it !
>
> The problem really is with the first site (georigin.com). I can download
the
> data I'm interested in in one of the following formats: Asset, Planet or
> MapInfo. As you can see from this site, one of the links they obtained
there
> data from refers eventually to a site in the usgs.gov domain - which make
me
> belief the data might actually be in GTOP30 format or something similar.
>
> Has anyone worked with this data yet? Any tips/pointers?
>
> Thanks a lot - I hope you don't mind a lot of questions
>
> Cheers
>
> Nico Coetzee
> South Africa
>
> - --
> Murphy's Law of Research:
> Enough research will tend to support your theory.
>
>
> BOFH excuse :
>
> bugs in the RAID
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.2.1 (GNU/Linux)
>
> iD8DBQFArNJUlXERkPl0klQRAkk7AKCIdKs/Vy+6JIJsfYS5+u5TAC4cpQCeN7yo
> Z9jvJPkYKBUhu6Cl/v9PDis=
> =FWng
> -----END PGP SIGNATURE-----
>
>

--
Markus Neteler <neteler itc it> http://mpa.itc.it
ITC-irst - Centro per la Ricerca Scientifica e Tecnologica
MPBA - Predictive Models for Biol. & Environ. Data Analysis
Via Sommarive, 18 - 38050 Povo (Trento), Italy

Michael_Ash · May 21, 2004, 9:47am

I download Digital Chart of the World (VMAP0) data on a
country-by-country basis in .e00 (ESRI export) format from
http://www.maproom.psu.edu/dcw/ . I believe that the data in
.e00 format are an ESRI product made available for free in a
slightly inconvenient format.

I then use the attached grass script to import and organize
the data, e.g., to assign the correct dig_cats files, etc.
Let me know if I can help with the script.

Best,

Michael

g.gisenv set=MAPSET=ndiku
for i in /home/ndiku/dcw/[a-z]*
do
echo $i
country=${i#'/home/ndiku/dcw/'}
echo $country
for j in $i/*.e00
do
    m.in.e00 -is input=$j
    coverage=${j#/home/ndiku/dcw/$country/}
    coverage=${coverage%.e00}
    echo $j
    echo $country $coverage
    g.rename -o vect=$coverage,${country}_$coverage
    g.rename -o sites=$coverage,${country}_$coverage
    if [ -e /home/ndiku/grass/SSA/ndiku/dig_cats/${coverage} ]
     then
      for k in /home/ndiku/grass/SSA/ndiku/dig_cats/${coverage}*
       do
        label=${k#/home/ndiku/grass/SSA/ndiku/dig_cats/$coverage}
        echo $k
        echo $label
        mv $k /home/ndiku/grass/SSA/ndiku/dig_cats/${country}_$coverage$label
       done
     fi
done
if [ -e /home/ndiku/grass/SSA/ndiku/site_lists/${country}_aepoint ]
  then
    s.to.vect -p input=${country}_aepoint output=${country}_aepoint
    cp /home/ndiku/grass/SSA/ndiku/dig/${country}_aepoint /home/ndiku/grass/SSA/ndiku/dig/${country}_aepoint.aeptname
    cp /home/ndiku/grass/SSA/ndiku/dig_att/${country}_aepoint /home/ndiku/grass/SSA/ndiku/dig_att/${country}_aepoint.aeptname
    cp /home/ndiku/grass/SSA/ndiku/dig_plus/${country}_aepoint /home/ndiku/grass/SSA/ndiku/dig_plus/${country}_aepoint.aeptname
  fi
if [ -e /home/ndiku/grass/SSA/ndiku/site_lists/${country}_pppoint ]
  then
    s.to.vect -p input=${country}_pppoint output=${country}_pppoint
    cp /home/ndiku/grass/SSA/ndiku/dig/${country}_pppoint /home/ndiku/grass/SSA/ndiku/dig/${country}_pppoint.ppptname
    cp /home/ndiku/grass/SSA/ndiku/dig_att/${country}_pppoint /home/ndiku/grass/SSA/ndiku/dig_att/${country}_pppoint.ppptname
    cp /home/ndiku/grass/SSA/ndiku/dig_plus/${country}_pppoint /home/ndiku/grass/SSA/ndiku/dig_plus/${country}_pppoint.ppptname
  fi
done

for some time now there are African 90m (3 arcsec) elevation SRTM
data available at http://edcftp.cr.usgs.gov/pub/data/srtm/ for
free. there is also Markus Neteler' s script for loading them into
Grass available somewhere on the net, Google it (though honestly I
haven't tried it yet :))

Hi all, First of all - I am an *extreme* newbie with anything
related to GIS, but I am very keen on learning a lot about this
subject, mainly for personal reasons.

I am now in the process of looking for the right software to start
of with, and since I am a Linux user, it seems all people end up
recommending GRASS, so - here I am

I am still in the installation phase of GRASS, but I thought it
might be a good idea at this stage to ask about obtaining data from
external sources. At this stage I am particularly interested in data
from the following sites:

1) http://www.georigin.com/ - Contain datasets related to African countries
2) http://edc.usgs.gov/products/elevation/gtopo30.html and
http://lpdaac.usgs.gov/gtopo30/gtopo30.asp (essentially the same ORG) -
GTOP30 data sets related to Southern Africa

It seems from what I have read that I would be able to use the
GTOP30 data, although if there are any people that has some input
here, I will greatly apprciate it !

The problem really is with the first site (georigin.com). I can
download the data I'm interested in in one of the following formats:
Asset, Planet or MapInfo. As you can see from this site, one of the
links they obtained there data from refers eventually to a site in
the usgs.gov domain - which make me belief the data might actually
be in GTOP30 format or something similar.

Has anyone worked with this data yet? Any tips/pointers?

Michael_Ash · July 5, 2004, 3:22pm

I am very pleased to see the release of 5.7 and think it's
terrific. Thank you to everyone who made it possible.

In December 2003, there was an exchange on grasslist about
importing e00 files in 5.7 (and the absence of m.in.e00 in
5.7) Markus Neteler suggested two approaches:

- either enable OGR to read E00 ASCII format (most code is already
there, see OGR bugtracker for exactly this request)
- port m.in.e00 to v.in.e00 in GRASS 5.7

As a heavy importer of e00 files into GRASS (and hence a
heavy user of m.in.e00 in earlier versions), I would be
interested in helping with this effort. I have relatively
limited programming experience and no experience programming
for GRASS, but I'm careful and I'm willing to do boring work
if someone points me in the right direction.

Does anyone have a suggestion about whether it's easier to
port m.in.e00 or to enable an e00 driver in OGR? (The
former sounds easier to me, but what do I know?)

Can someone send me the source for m.in.e00, and give me a
basic sketch of what is entailed by "enable OGR to read
E00"?

Thank you very much.

Best regards,

Michael Ash, Assistant Professor
of Economics and Public Policy
Department of Economics and CPPA
University of Massachusetts
Amherst, MA 01003
Tel 413-545-6329 Fax 413-545-2921
Email mash@econs.umass.edu
http://people.umass.edu/maash

H_B · July 9, 2004, 5:01am

In December 2003, there was an exchange on grasslist about
importing e00 files in 5.7 (and the absence of m.in.e00 in
5.7) Markus Neteler suggested two approaches:

- either enable OGR to read E00 ASCII format (most code is already
there, see OGR bugtracker for exactly this request)
- port m.in.e00 to v.in.e00 in GRASS 5.7

As a heavy importer of e00 files into GRASS (and hence a
heavy user of m.in.e00 in earlier versions), I would be
interested in helping with this effort. I have relatively
limited programming experience and no experience programming
for GRASS, but I'm careful and I'm willing to do boring work
if someone points me in the right direction.

Does anyone have a suggestion about whether it's easier to
port m.in.e00 or to enable an e00 driver in OGR? (The
former sounds easier to me, but what do I know?)

Can someone send me the source for m.in.e00, and give me a
basic sketch of what is entailed by "enable OGR to read
E00"?

http://freegis.org/cgi-bin/viewcvs.cgi/grass/src/misc/m.in.e00/

or just in the 'src/misc/m.in.e00/' directory of the 5.3 distribution.

OGR: http://www.remotesensing.org/ogr

Hamish