[GRASS-user] Thanks for making my work successful

2011-07-12 Thread Chethan S.
Hi all!

I am glad to inform you that after spending nearly an year on my PG
dissertation work, I have defended it successfully today. I was totally new
to GRASS GIS and other FOSS GIS packages an year ago. Still the faith I had
in the free software community gave me the confidence that entire GRASS User
community would be there to help me in case of difficulties. I was proved
right by the users here. I got good and detailed answers from top users of
GRASS every time I posted a question, that too in the shortest possible
time. This always boosted my confidence and today I have reasonably good
working knowledge on GRASS. Hence, I take this opportunity to sincerely
thank the members of this community for supporting me in all stages of my
work.

I have also decided to take part in GRASS Development in coming days and
thus contribute my bit to this wonderful software.

Thanks and regards,

Chethan S.

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*LinkedIn**: *http://in.linkedin.com/in/gischethans
*Blogs: *http://gis.staygeo.com;
   http://gischethans.wordpress.com
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[GRASS-user] Re: Writing a script for image classification

2011-06-08 Thread Chethan S.
I use Linux, Ubuntu 11.04.

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[GRASS-user] Writing a script for image classification

2011-06-07 Thread Chethan S.
Hi all!

Will it be possible to write a simple script for image classification
routine? Basically I have several image groups/subgroups in same/different
mapsets in GRASS. I perform supervised classification with the following
routine:

   1. Vector layer containing training sites imported from QGIS - same sites
   to be used for all image groups/subgroups
   2. Conversion of vector to raster
   3. Generation of signature sites using i.gensig - here the usage of
   groups/subgroups arise
   4. Classification using i.maxlik

So far I have been doing all these operations using GUI but now I want to
become a power user. Can anyone give me a brief overview/outline of how a
script would look like for my purpose. I did look into the wiki pages but
wasn't able to understand it. So I seek suggestions from regular script
users in this community.

Thanks and regards,

Chethan S.
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[GRASS-user] Re: Writing a script for image classification

2011-06-07 Thread Chethan S.
Thanks Martin! I used Google Translate and could read the script in English.

Can you please let me know from where/how do I call the script? Is it from
the GRASS Command line in the usual Linux way - ./something?

Sorry for my ignorance but I haven't used scripts in GRASS till now.

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[GRASS-user] Changing/Applying appropriate raster colors

2011-06-06 Thread Chethan S.
Hi all!

I use 'i.maxlik' for image classification. The output obtained shows water
in green, built-up area in blue, vegetation in red and so on. It would be
appropriate if water appears blue and I had the ability to customize other
colors. Where and how do I specify these details in my sequence of
operations which is as follows:

   1. Vector layer containing training sites imported from QGIS
   2. Conversion of vector to raster
   3. Generation of signature sites using i.gensig
   4. Classification using i.maxlik

I tried adding a column(inputs 'varchar') color with RRR:GGG:BBB values to
my vector generated in first step but the colors didn't come according to
that in the final output.

Thanks and regards,

Chethan S.
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[GRASS-user] Clipping Raster and Vector layers

2011-05-28 Thread Chethan S.
Hi all!

How can I clip

   1. a raster layer with a vector boundary and
   2. a vector layer with a vector boundary

in GRASS GIS using GUI? I couldn't find a suitable option to do that.
Quantum GIS has such options but I was thinking if there is an easy option
in GRASS that would be more easier.

If not what commands are to be used for it?

Thanks and regards,

Chethan S.
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[GRASS-user] Classifying single landcover

2011-05-22 Thread Chethan S.
Hi all!

For my work I am interested in identifying a single kind of vegetation from
LANDSAT Images. If I use signature file with just one signature class(I take
many training sites all over the area), the classified image with i.maxlik
appears full pink. On the other hand if I randomly pick training sites for
one more class(water) and have two classes in the signature file this does
not happen. So I am wondering will it not be possible to use a single
class's signature sites for supervised classification.

Thanks and regards,

Chethan S.
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[GRASS-user] GRASS Image Groups applications

2011-05-17 Thread Chethan S.
Hi all!

Image groups created using i.group in GRASS GIS are used to bundle band
raster files to facilitate classification processes. Other than that under
what scenarios it can be used?

A journal article Computing geostatistical image texture for remotely sensed
data classification - PDF http://hera.ugr.es/doi/15003954.pdf mentions
about using different band/result combinations for checking improvements in
accuracy. The authors there use a custom code to generate texture layers and
finally use different combinations of texture layers and bands to check the
improvements in accuracy. The texture layers are images which are pixel wise
manipulated images obtained using a custom code applied on Principal
Components of LANDSAT Images. They use several combinations like
bands+univariate texture layers, bands+fractal dimension layers and many
more. For such a case, can i.group be used? If not what module of GRASS
would be suitable for that?
Thanks and regards,

Chethan S.
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[GRASS-user] i.group and r.patch in supervised classification

2011-05-17 Thread Chethan S.
Hi all!

I am confused about the utility of r.patch and i.group w.r.t. image
classification.

In ERDAS for supervised classification layer stacking can be done followed
by classification.

A way to layer stack in GRASS would be r.patch (since layers are more than
3, I can't use r.composite). But for classifying in GRASS since i.group has
to be used, can I use i.group to do layer stacking instead of using r.patch
and then classify?

Thanks and regards,

Chethan S.
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[GRASS-user] GRASS GDAL 1.4.3 error in installing

2011-05-16 Thread Chethan S.
Hi all!

When I tried installing GDAL-GRASS-1.4.3 on GRASS 6.5.SVN running in Ubuntu
11.04, configure and make steps run fine. But when I use 'sudo make install'
I get this error:

install -d /usr/lib/gdalplugins
cp gdal_GRASS.so /usr/lib/gdalplugins
cp ogr_GRASS.so /usr/lib/gdalplugins
test -d /usr/local/share/gdal/grass || mkdir /usr/local/share/gdal/grass
mkdir: cannot create directory `/usr/local/share/gdal/grass': No such file
or directory
make: *** [install] Error 1

What is to be done for this?

Regards,

Chethan S.
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[GRASS-user] GDAL-GRASS Error

2011-05-02 Thread Chethan S
Hi all,

When I run --with-grass=/usr/local/grass-6.5.svn, for installing GDAL-GRASS,
I get the following error:

checking for gdal-config... /usr/bin/gdal-config
using /usr/lib/gdalplugins as GDAL shared library autoload directory
checking for G_asprintf in -lgrass_gis... no
configure: error: --with-grass=/usr/local/grass-6.5.svn requested, but
libraries not found!
Perhaps you need to set LD_LIBRARY_PATH to include /usr/local/grass-6.5.svn/lib?

I have created a *grass.conf* as instructed elsewhere inside
/etc/ld.so.conf.d/ and have added following lines in it:
/usr/local/lib
/usr/local/grass-6.5.svn/lib

I ran sudo ldconfig after that too.

I came across a similar issue posted in the GRASS-Dev mailing list
http://osgeo-org.1803224.n2.nabble.com/gdal-grass-plugin-build-failed-td6232215.
As an answer it was instructed to:

You could just generate the symlinks yourself, e.g.:

cd /usr/local/grass-6.5.svn/lib
for file in libgrass_*.so ; do ln -s $file ${file%.6.5.svn.so}.so
; done html.

I ran,

cd /usr/local/grass-6.5.svn/lib
ln -s $file ${file%.6.5.svn.so}.so

but it made no difference! What should I do now?

Thanks and Regards,

Chethan S.
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[GRASS-user] Subset several bands of data at one go

2011-03-08 Thread Chethan S
Hi all!

As you know landsat data has separate files for different bands. Creating a
subset is a wise option to work on region of our interest. Therefore, I used
this method to subset my image -
d.zoom || g.region
g.region -p
r.mapcalc *subset*=original
as suggested in
http://osgeo-org.1803224.n2.nabble.com/Raster-Map-subset-td4523291.html#a4526819
.

But with this I can subset one band data at a time. Is it somehow possible
to use i.group and region definition to obtain subsets of all bands?
Scripting might be an answer but I have no much idea about it.

Thanks and regards,

Chethan S.
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[GRASS-user] Importing landsat data with GUI - bug again

2011-03-07 Thread Chethan S
Greetings!

Few months back I had reported problems in GUI based bulk import of landsat
data in GRASS 6.4.1svn -
http://osgeo-org.1803224.n2.nabble.com/Importing-of-raster-data-doesn-t-seem-to-work-through-GUI-td5805160.html.
It was recognized that grass could recognize *.tif files and not *.TIF files
and was fixed in the next update. But now again the same issue has cropped
up. I run the latest updated version of grass6.4.1svn. Can the developers
fix it again?

Regards,

Chethan S.

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[GRASS-user] Mosaic Images

2011-03-07 Thread Chethan S.
Greetings!

When I try to mosaic landsat images(just one band) which belong to adjacent
path-rows they do not mosaic properly. It appears as in the attached
screenshot. I have tried changing the order of images but just the
overlapping image changed. I have tried r.patch as well as i.image.mosaic
with region encompassing both the scenes. However if I mosaic the same
images in ERDAS Imagine there are no issues. Mosaiced  image will be simply
perfect except for brightness differences. ERDAS also provides options like
histogram matching to sort out such issues. So what is the way to mosaic
images in GRASS? Also is there any way to use specify options like
resampling, histogram matching in the process?

Thanks and regards,

Chethan S.
http://osgeo-org.1803224.n2.nabble.com/file/n6108043/mosaic.png 

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[GRASS-user] Generate variograms from landsat data

2011-01-18 Thread Chethan S
Hello everybody!

I want to generate variograms for landsat images. A simple search in the
raster/imagery commands yielded no favorable results. So I wanted to know,
is there any built-in module/command which can be used for the work or can I
get that ability with some extension? Or will I have to do it in R?

Thanks and regards,

Chethan S.

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PG Student | Remote Sensing and Geographic Information Systems
National Institute of Technology Karnataka | Surathkal
Karnataka | India - 575 025
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[GRASS-user] Good reference for python

2010-12-10 Thread Chethan S
Hello everyone!

As python offers lot of opportunities for automation of tasks in
Geoprocessing, I find it necessary to learn python. I have started learning
python from the books suggested in python's official website. However as a
GIS guy, I am interested to know if there are any good materials which
explains python concepts as it fits into GIS packages, specially GRASS.

Thanks and regards,

Chethan S.

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[GRASS-user] Re: Importing of raster data doesn't seem to work through GUI

2010-12-06 Thread Chethan S.

Unfortunately, that does not work for me. As you said the *.tif files appear
grayed out in that particular folder. But the next outcome is not the one
you get. Also after a recent update of GRASS 6.4.1 SVN there is no option
Bulk Import of Raster data. Its only import raster data. I select
directory option there. For using the individual file import option like
before I used Command Dialog option as shown below. I should also mention
that I use GRASS 6.4.0 version from Ubuntu repository at my college but
again face the same problem. 

http://osgeo-org.1803224.n2.nabble.com/file/n5807453/Selection_022.png 

Regards,

Chethan S.
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[GRASS-user] Importing of raster data doesn't seem to work through GUI

2010-12-05 Thread Chethan S
Greetings!

I have been trying to import raster data in bulk through the wxPython GUI in
Grass Layer Manager using File  Import Raster Data  Import Raster Data in
GRASS 6.4.1 SVN. I have tried setting source type as File and Directory.
As I use landsat data the format is GeoTIFF. As I navigate and select
particular folder/data nothing appears in List of GDAL layers. I have
tried in two ways - with metadata and other text files residing in the same
folder as the satellite data and keeping text files in another folder.
Nothing changed. Therefore, I have to select Command Dialog and import the
data band by band. Am I missing something in the process?

Regards,

Chethan S.

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[GRASS-user] Re: Importing of raster data doesn't seem to work through GUI

2010-12-05 Thread Chethan S.

Greetings!

I use Ubuntu 10.04 64-bit. This bulk import feature never worked for me. I
am attaching a screenshot now. In the screenshot, the directory has no
metadata and other text files, but I have tried importing with those files
inside the directory as well.

http://osgeo-org.1803224.n2.nabble.com/file/n5806289/Selection_021.png 

Regards,

Chethan S.

Martin Landa wrote:
 
 Hi,
 
 2010/12/5 Chethan S chethanuniver...@gmail.com:
 I have been trying to import raster data in bulk through the wxPython GUI
 in
 Grass Layer Manager using File  Import Raster Data  Import Raster Data
 in
 GRASS 6.4.1 SVN. I have tried setting source type as File and
 Directory.
 As I use landsat data the format is GeoTIFF. As I navigate and select
 particular folder/data nothing appears in List of GDAL layers. I have
 tried in two ways - with metadata and other text files residing in the
 same
 folder as the satellite data and keeping text files in another folder.
 Nothing changed. Therefore, I have to select Command Dialog and import
 the
 data band by band. Am I missing something in the process?
 
 OS? Tested with fresh 6.4.1 from SVN. Seems to work. URL to the sample
 data?
 
 Martin
 
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[GRASS-user] Usage of R and GRASS - References

2010-12-05 Thread Chethan S
Greetings!

I have started working on my academic project which is on object based image
classification using Geostatistics of landsat data. My objective is to
analyze increase in cropped area over years. I will be using GRASS and R to
accomplish my objectives. I am interested to know if anyone is aware of such
work carried out in past using GRASS and R. Such a study if available would
serve as a benchmark for my work.

Regards,

Chethan S.

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[GRASS-user] Landsat SLC-Off data usage

2010-12-03 Thread Chethan S
Greetings!

I am using Landsat 7 ETM+ SLC-Off imageries for my academic project work. As
users may be aware due to Scan line corrector going off in the satellite,
large gaps are created in each band of image. It accounts for loss of 20 to
22 percent of data. Since recently, gap mask files are provided along with
Landsat data, so you can tell where actual data is versus the gaps, also all
data gaps have a digital value of 0 (zero).

Options to use fill in those gaps created include using interpolation
methods, usage of images from different dates or sensors like IRS or MODIS,
usage of geostatistics etc. I am interested to know if anyone has employed
such methods in GRASS previously. Proven techniques would help me progress
faster.

Thanks and Regards,

Chethan S.

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[GRASS-user] make.c error

2010-12-02 Thread Chethan S
Hello everyone!

I use GRASS GIS 6.4.1 SVN version for my work. I keep the code in a
directory inside my home directory. As I needed i.atcorr module I configured
it with with-cxx. I used the following configure script

./configure --with-tcltk-includes=/usr/include/tcl8.5
--with-proj-share=/usr/share/proj --with-gdal=/usr/bin/gdal-config
--with-cxx --enable-64bit --with-python=/usr/bin/python2.6-config

However I got one error in the make process in d.rast module. Therefore, as
instructed I changed to that directory and ran make command. Now I get the
following bunch of errors.

chet...@chethan-desktop:~/Applications/grass64_release/display/d.rast$ make
gcc
-I/home/chethan/Applications/grass64_release/dist.x86_64-unknown-linux-gnu/include
-g -O2   -DPACKAGE=\grassmods\
-I/home/chethan/Applications/grass64_release/dist.x86_64-unknown-linux-gnu/include
-o OBJ.x86_64-unknown-linux-gnu/main.o -c main.c
main.c: In function ‘main’:
main.c:89: error: ‘flag_n’ undeclared (first use in this function)
main.c:89: error: (Each undeclared identifier is reported only once
main.c:89: error: for each function it appears in.)
make: *** [OBJ.x86_64-unknown-linux-gnu/main.o] Error 1

I have no clue as to why these errors arise. What should I do now?

Regards,

Chethan S.

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[GRASS-user] GRASS user map - added twice

2010-11-23 Thread Chethan S
Hi everyone!

Today I tried adding myself to the Worldwide GRASS GIS usermap and succeeded
in doing so. However due to internet connection issues I had to refresh the
page. It resulted in my name appearing and counting twice(earlier there were
1421 users, now it is 1423). I find no ways to delete the extra point.
Therefore I would like to know how to go about regarding this issue. I am
even ready to contact the administrator for the map site if someone could
provide me the email id.

Regards,

Chethan S.

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[GRASS-user] Lot of python warnings GRASS SVN 6.4.1

2010-10-31 Thread Chethan S
Greetings!

I use GRASS 6.4.1 svn release version. Today I updated it using 'svn up'
command and ran subsequent processes up to make install. Everything went
smoothly.

But now when I start grass, by typing grass64 in terminal following warnings
appear:
Cleaning up temporary files ...
Starting GRASS ...
`menu_proxy_module_load': python: undefined symbol: menu_proxy_module_load

(python:10421): Gtk-WARNING **: Failed to load type module: (null)


(python:10421): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(python:10421): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed

After I select the location and mapset still more warnings appear and the
prompt to enter commands does not appear in terminal.  These are the
warnings that appear:

(python:11011): Gtk-WARNING **: Failed to load type module: (null)


(python:11011): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(python:11011): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
`menu_proxy_module_load': python: undefined symbol: menu_proxy_module_load

(python:11011): Gtk-WARNING **: Failed to load type module: (null)


(python:11011): GLib-GObject-WARNING **: invalid (NULL) pointer instance

*lot of lines in between*

(python:11011): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(python:11011): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
`menu_proxy_module_load': python: undefined symbol: menu_proxy_module_load

(python:11011): Gtk-WARNING **: Failed to load type module: (null)


(python:11011): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(python:11011): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed

What may be the reason for this? I use ubuntu lucid lynx which I update
regularly.

Thanks and regards,

Chethan S.
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[GRASS-user] GRASS in 64-bit Debian Squeeze

2010-10-30 Thread Chethan S
Greetings everyone!

As of now I am running the release branch of GRASS 6.4.1 release branch
version (stable) in 32-bit Ubuntu operating system. I am seriously thinking
of migrating to 64-bit OS as I believe image processing like tasks can be
faster there. I am considering migration to Debian Squeeze. I am interested
to know if GRASS runs fine on 64-bit platform or will some tweaking be
necessary? Somewhere I remember reading queries on issues with wxGUI in
64-bit systems. Do such problems exist now too?

Thanks and Regards,

Chethan S.
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[GRASS-user] Re: Which version is advisable - SVN or stable, Unable to locate Tk includes

2010-10-18 Thread Chethan S
Greetings!

Which version is advisable - SVN or stable
I took Mr. Neteler's suggestion and now have GRASS GIS 6.4.1svn(2010)
running. Also I could start the R package from within GRASS.2.

Unable to locate Tk includes
Mr. Martin's suggestion definitely works. However I found an effective
answer to such issues from ask ubuntu where I had posted the question
http://goo.gl/82LE. I was suggested to install apt-file tool which enables
one to search for missing files easily using apt-file search* filename*
command. This suggestion proved to be very effective as I could solve some
more missing file problems. Hope this will help GRASS users facing similar
problems in future.

Thanks and regards,

Chethan S.
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[GRASS-user] Which version is advisable - SVN or stable

2010-10-17 Thread Chethan S
Greetings!

I am a PG student using GRASS GIS and R for my dissertation work in Ubuntu
10.04. As of now in the ubuntugis PPA, GRASS 6.4.0 version rc6 version is
available. As I always want to use the latest stable version available and
now since the stable version 6.4.0 is available, I have two options -

   1. Compile from source code which cannot be updated automatically.
   2. Using Weekly 6.4-svn snapshot which gives me the advantage of using
   the latest automatic updates

I am not able to decide upon which is suitable for me. I need a stable
environment. In addition to this I also use R in combination with GRASS
(spgrass6). Therefore it becomes essential that this interface should not
break. Can anyone help me decide. I would be glad to know the advantages of
one over other.

Regards,

Chethan S.

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[GRASS-user] Unable to locate Tk includes

2010-10-17 Thread Chethan S
Greetings!

I am trying to install GRASS Release branch 6.4 from SVN on Ubuntu. At then
configure stage, I use the command

./configure --with-tcltk-includes=/usr/include/tcl8.5
--with-proj-share=/usr/share/proj

But I get the following error at the very last stage:
checking for location of Tcl/Tk includes... /usr/include/tcl8.5
checking for tcl.h... yes
checking for tk.h... no
*configure: error: *** Unable to locate Tk includes.*

I tried adding the parameters to the above command -
--with-tcltk-libs=/usr/share/tcltk -- in this directory I have tcl8.4,
tcl8.5, tk8.4, tk8.5, tcllib1.12, tklib0.5 directories
--with-tcltk-libs=/usr/include/tcl8.5

If I search for file named tk.h, such a file does not show up anywhere in
the file system. Is there any package I have to install to rectify this.

Regards,

Chethan S.
-- 
Chethan S.
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[GRASS-user] Installing spgrass6 package - Errors and warnings

2010-09-11 Thread Chethan S
Hello everybody!

I am using GRASS 6.4.0 RC6 in ubuntu 10.04. I installed R version 2.11.1
(2010-05-31) just today. As I need GRASS and R interface for my work, I went
ahead as per instructions in
http://www.osgeo.org/files/journal/final_pdfs/OSGeo_vol1_GRASS-R.pdf.

Initially when I started R from within GRASS and tried the command I got the
following errors:
 install.packages(spgrass6, dependencies = TRUE)
Warning in install.packages(spgrass6, dependencies = TRUE) :
  argument 'lib' is missing: using '/usr/local/lib/R/site-library'
Warning in install.packages(spgrass6, dependencies = TRUE) :
  'lib = /usr/local/lib/R/site-library' is not writable
Would you like to create a personal library
'~/R/i486-pc-linux-gnu-library/2.11'
to install packages into?  (y/n) n
Error in install.packages(spgrass6, dependencies = TRUE) :
  unable to install packages
 q()

Later I started R using sudo R and then the following errors and warnings
occurred.
 install.packages(spgrass6, dependencies = TRUE)
Warning in install.packages(spgrass6, dependencies = TRUE) :
  argument 'lib' is missing: using '/usr/local/lib/R/site-library'
--- Please select a CRAN mirror for use in this session ---
Loading Tcl/Tk interface ... done
also installing the dependencies ‘rgdal’, ‘XML’

trying URL 'http://mirror.kapook.com/cran/src/contrib/rgdal_0.6-28.tar.gz'
Content type 'application/x-gzip' length 1416605 bytes (1.4 Mb)
opened URL
==
downloaded 1.4 Mb

trying URL 'http://mirror.kapook.com/cran/src/contrib/XML_3.1-1.tar.gz'
Content type 'application/x-gzip' length 779143 bytes (760 Kb)
opened URL
==
downloaded 760 Kb

trying URL 'http://mirror.kapook.com/cran/src/contrib/spgrass6_0.6-20.tar.gz
'
Content type 'application/x-gzip' length 334459 bytes (326 Kb)
opened URL
==
downloaded 326 Kb

* installing *source* package ‘rgdal’ ...
gdal-config: gdal-config
./configure: line 1311: gdal-config: command not found
Error: gdal-config not found
The gdal-config script distributed with GDAL could not be found.
If you have not installed the GDAL libraries, you can
download the source from  http://www.gdal.org/
If you have installed the GDAL libraries, then make sure that
gdal-config is in your path. Try typing gdal-config at a
shell prompt and see if it runs. If not, use:
 --configure-args='--with-gdal-config=/usr/local/bin/gdal-config' echo with
appropriate values for your installation.

ERROR: configuration failed for package ‘rgdal’
* removing ‘/usr/local/lib/R/site-library/rgdal’
* installing *source* package ‘XML’ ...
checking for gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking how to run the C preprocessor... gcc -E
checking for sed... /bin/sed
checking for pkg-config... /usr/bin/pkg-config
checking for xml2-config... no
Cannot find xml2-config
ERROR: configuration failed for package ‘XML’
* removing ‘/usr/local/lib/R/site-library/XML’
ERROR: dependencies ‘rgdal’, ‘XML’ are not available for package ‘spgrass6’
* removing ‘/usr/local/lib/R/site-library/spgrass6’

The downloaded packages are in
‘/tmp/RtmpP2fUan/downloaded_packages’
Warning messages:
1: In install.packages(spgrass6, dependencies = TRUE) :
  installation of package 'rgdal' had non-zero exit status
2: In install.packages(spgrass6, dependencies = TRUE) :
  installation of package 'XML' had non-zero exit status
3: In install.packages(spgrass6, dependencies = TRUE) :
  installation of package 'spgrass6' had non-zero exit status

The result is I am not able to use spgrass.
 library(spgrass6)
Error in library(spgrass6) : there is no package called 'spgrass6'

As an intermediate level user in terms of commands and also regarding R and
GRASS packages I am not able to decide what went wrong. Can you please help
me out.

Regards,

Chethan S.
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[GRASS-user] Displaying layers - GRASS 6.4.0RC7 with MSYS

2010-08-29 Thread Chethan S
Hello!

I natively use GRASS in ubuntu but wanted to try it in windows as well. I
use GRASS 6.4.0RC7 with MSYS and referring to Open Source GIS -  A GRASS
Approach I wanted to display layers using following commands for the sample
North Carolina dataset -

g.region rast=elevation -p
d.erase

d.rast elevation
d.his h=elevation i=elevation_shade and so on...

Prior to all these there was d.mon x0 command. It resulted in an error. It
was also mentioned that X server system does not work in windows and I can
use gis.m. I want it to display in wxGUI. The commands I typed in gave no
results. The map display of wxGUI interface gives no output unless I key in
the commands one after another in GRASS Layer Manager under Cmd. Its a
difficult process as I have to erase the previous command before entering
next one.

Is there any other way to get dynamic outputs from MSYS shell interface or
is using GUI the only way. I am not interested in using the windows command
interface or text interface to grass.

Regards,

Chethan S.
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Re: [GRASS-user] Displaying layers - GRASS 6.4.0RC7 with MSYS

2010-08-29 Thread Chethan S
On Sun, Aug 29, 2010 at 6:43 PM, Glynn Clements gl...@gclements.plus.comwrote:


 Chethan S wrote:

  I natively use GRASS in ubuntu but wanted to try it in windows as well. I
  use GRASS 6.4.0RC7 with MSYS and referring to Open Source GIS -  A GRASS
  Approach I wanted to display layers using following commands for the
 sample
  North Carolina dataset -
 
  g.region rast=elevation -p
  d.erase
 
  d.rast elevation
  d.his h=elevation i=elevation_shade and so on...
 
  Prior to all these there was d.mon x0 command. It resulted in an
  error.

 d.mon is the main feature which doesn't work natively in Windows. All
 d.* commands operating by generating an image file (by default, the
 file map.png in the current directory). For screen display, use one of
 the GUIs, or open the map.png file in a viewer which provides a quick
 way to reload the current file.

 Also, note that d.mon has been removed altogether in GRASS 7.

 --
 Glynn Clements gl...@gclements.plus.com


Hello again!

Is displaying on x0 or cairo or png displays using d.mon, the only way to
display layers from command line even in linux? Isn't there a way to type
commands in terminal and get the layers displayed in GRASS GIS Map display
in wxGUI?

Regards,

Chethan S.
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[GRASS-user] Commands on Cygwin vs native windows

2010-08-28 Thread Chethan S
Hello!

I am in the process of learning to use GRASS. I mainly use it in ubuntu. I
wanted to try it in windows as well. I noticed that there are several
download options for it. Though I am a naive user with regard to command
line, I have slowly begun to like command line.

My questions, some are really basic. Please excuse me if I am wrong.

   1. Is the GRASS manual at
   http://grass.osgeo.org/grass64/manuals/html64_user/index.html written for
   UNIX based OS users or windows users?
   2. Which option provides maximum advantage with regard to usage -
   stand-alone windows version or cygwin based one. And why?
   3. I wonder if I would be able to run UNIX like commands - module
   [-flag1[flag2...]] parameter1=map1[,map2,...]\
   [parameter2=number...] [--o] [--q] [--v] in windows as well in GUI based
   version or do I need cygwin based one for such work.


Regards,

Chethan S.
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