Dear Glynn,
When you said:
GRASS won't allow you to select a mapset as the current mapset unless
you are the owner of the mapset directory.
How can I change the owner of a mapset directory?
Regards,
Antonio
On 12-11-2013 14:46, Glynn Clements wrote:
António Rocha wrote:
I have a Location
Dear all,
I have a Location and Mapset in a folder in Linux Server that was
created by me and I runned some scripts and created some maps etc. I
have a colleague that is trying enter in the mapset and it gets
Permission Denied. How can I allow her to access the mapset without any
problems?
Dear all,
I have a Raster layer with colors and values 1 till 8 and null values. I
want to export as JPEG using r.out.gdal but I get a totally black image.
Any tips on how to solve this?
Regards,
Antonio
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Dear all,
I would like to know if there is any direct method (of a suggestion of
an indirect method) to list raster layers with valid pixels (not null)
in a defined computational region?
Thank you
Regards,
Antonio Rocha
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Hello Nikos
I would rephrase and say list of raster maps with at least a single
not-NULL cell inside a computational region.
Regards,
Antonio
On 25-10-2013 11:26, Nikos Alexandris wrote:
On Friday 25 of October 2013 10:07:27 António Rocha wrote:
I would like to know if there is any direct
dear all,
I have a land cover map (values from 1 till 15) and I want to extract
randomly 100 pixels from each class. I tried to use the cover option but
it only produced an additional column with values from the cover map. My
question is: how can I extract exactly 100 pixels from each class
Dear all,
I'm tryging to access a Location/mapset located in a folder (where I
have write/execute/read permission) but the mapset and location were not
created by me. When I run grass I get permission denied. How can I get
access or how can the original user of the mapset can give access
Dear all
I'm doing some Python scripts and I want to retrieve r.stats output
information in a variable. How can I do this?
variable= grass.run_command(r.series, .. )
Thanks
Antonio
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Hi Markus
Thanks, Does that work on Windows?
Regards,
A.Rocha
On 03-12-2012 14:57, Markus Neteler wrote:
On Fri, Nov 30, 2012 at 4:22 PM, António Rocha
antonio.ro...@deimos.com.pt wrote:
Hi
I have a few satellite images and products and I want to generate very high
quality screenshots/images
Hi
I have a few satellite images and products and I want to generate very
high quality screenshots/images based on them to place on brochures/etc.
Any tips on how to do this because if I use r.out.gdal its images
quality is not good.
Thanks
Antonio
Greetings,
Is there any GRASS module that can be used to river and road extraction
from satellite images? Some feature extraction algorithm
Thank you
Regards,
Antonio Rocha
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this?
Thanks
Antonio
--
António Rocha
Earth Observation Applications and Services
Av. D. João II, Lt 1.17.01 - 10º, Ed. Torre Zen
1998-023 Lisboa, Portugal
Ph: +351 21 893 30 23
Fax: +351 21 896 90 99
http://www.deimos.pt
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grass
Hello Martin
I tried from the command line in the GUI.
Ok next time I will give a try with that extension. Thanks
On 13-09-2012 10:40, Martin Landa wrote:
Hi,
2012/9/13 António Rocha antonio.ro...@deimos.com.pt:
I tried to install r.out.kml with g.extension but I got this error:
which: svn
Greetings
I have used in Linux the r.out.kml script. Now, I hava installed Grass
GIS (WinGRASS-6.4.2-2-Setup.exe) in Windows and I have placed my
r.out.kml file in scripts folder and created a r.out.kml.bat file (with
the path to the file) in bin folder. When I write r.out.kml in command
Greetings
Is it possible to predefine a map Display windows size when launching?
If yes, where is it defined?
Thanks
Best regards
Antonio
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Hi
Sorry to get back to this question again but I was not able to solve this.
Ok
1- I have plotted my raster
2- I have added a command layer with this d.barscale bcolor=none at=0,90
3- If I use the Save display to graphic file functionality it works
just fine. But If i try to set a smaller Width
Greetings
I would like to know how can I generate a polygon for the exact
computational region (a square). Is this possible? IF so, how can I do that.
Thanks
Antonio
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The message
Hi
(I have eddited the email subject)
but when you export the map composition the overlays
don't get the memo that they should be propor-
tionately place themselves not simply as a fixed
offset from the bottom-left corner. (? I'm not
exactly sure how the overlay positioning works, but
assume
Hi Hamish
THe problem is with the shrink. You are right it's tiny but in the
case of the scale bar it is not shrinked. I mean it keeps the original size.
Example: This is the original
http://s1183.photobucket.com/albums/x462/toyzerocha/?action=viewcurrent=original.png
This is half of the size
Greetings
I'm trying to run d.out.file to produce a PNG file with a defined size
(and others) but I get the following error:
ERROR: You must select a display monitor.
SInce I'm running from WxPython interface how can I do that?
THanks
Antonio
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-November/062577.html).
Michael Barton suggested me to use this function.
I really need to produce output maps with a specific size and with
image+scale bar. and when I set HxW I loose Scalebar in my output image.
Antonio
Martin Landa wrote:
Hi,
2011/11/16 António Rocha antonio.ro
Greetings
I have built a python script and it runs just fine in Windows GRASS.
when I try to compile it in Linux it places the script file in script
folder but when I try to run It I get the following error in Command
Outputwindow:
Traceback (most recent call last):
File
Greetings
I have a raster image that I want to analyze its frequency inside
defined bins. How can I define bins size and bins-limits in GRASS?
THanks
Antonio
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The message was
description for command '%s'.
AttributeError
:
OSError instance has no attribute 'value'
What is missing?
THanks
Antonio
--
António Rocha
Aerospace Defence Portugal
DEIMOS Engenharia, SA
Av. D. Joao II, Lt 1.17.01 - 10º, Ed. Torre Zen
1998-023 Lisboa, Portugal
Ph: +351 21 893 3010
Fax: +351 21 896
Greetings
I have an NDVI map but it's not continuous: i mean, I have a few patches
with values and areas in my raster map without values.
I want to apply r.reclass.area in order to eliminate patches with less
than 2ha. My question is:
shall I convert NDVI pixels to 1 (creating a mask of valid
Greetings
In r.regression.line R is being defined as residuals. Well, after
doing some calculation in other tools I realized that R corresponds to
Pearson Correlation (also known as R). Can anyone else confirm me this?
THanks
Antonio
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I
I have been using r.series to calculate a linear regression slope for an
old and new raster map using r.series. But now I need to also obtain the
error. It seems not to be possible to use r.series. Is this true? if
yes, what alternative do I have?
THanks
Antonio
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Greetings
I would like to know where GRASS_DOC_BASE is stored and/or how is builted?
THanks
Antonio
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Hello Moritz
Thanks. ISO-8859-1 works. Just one question: I'm trying to find where
this parameter was stored and I'm not able tyo find. How can I know
where these preferences are stored? (I'm using Windows)
Thanks
Antonio
Moritz Lennert wrote:
On 09/09/11 09:58, António Rocha wrote:
Hi
Hi Martin
I know where to set the font and the encoding. What I was asking is a
combination of Font and Encoding that allows me to Display those
characters in the legend and in Map Display window?
Thanks
Antonio
Martin Landa wrote:
2011/9/5 António Rocha antonio.ro...@deimos.com.pt:
Does
Hi (back on this again!)
Does anyone knows a GRASS_FONT and GRASS_ENCODING configuration tyhat
allows to display non-ascii characters in Map Display Windows legend
(e.g. ááéã)
Thanks
Antonio
António Rocha wrote:
Greetings
I'm not being able to display non-ascii characters in Legend (e.g
Hi
Well in Windows I'm not being able to figure out where that information
is stored
Michael Barton wrote:
For Mac and Linux at least, they are saved in ~/.grass6 and ~/.grass7 directories.
These are hidden in the Mac finder (unless you use something like Invisibility
Toggler.app) but
Greetings
I Would like to know in which GRASS file are saved all configuration and
definitions?
Thanks
Antonio
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Greetings
I have one question regarding i.rectify's data type output: If I have my
input is a CELL map, will my output will be also CELL? I mean, does it
keep my data type?
Thanks
Antonio
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Hello Markus
Are you sure? Because I have tried i.rectify (1st order, 2nd order and
3rd Order) with a CELL image and my output was also CELL.
Markus Metz wrote:
2011/7/21 António Rocha antonio.ro...@deimos.com.pt:
Greetings
I have one question regarding i.rectify's data type output: If I
Greetings
Clearly it needs to be fixed. never the less, I have been able to delete
1 or two entries. By selecting all entries and deleting 1 by selecting
the faction of text. but it's not very user friendly
Michael Barton wrote:
Yes. This has been around for some time. Looks like it may need
Greetings
I have just installed GRASS in a CentOS machine, using yum repository
but the version is GRASS6.4.0-2. How old is this version?
Thanks
Antonio
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Hi
I have exacly the same problem. Is this some limitation on building
these installers? Or it may be some error that both of us did
Antonio
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Greetings
I would like to know if there is any method or function to perform
pan-sharpening (image fusion) in GRASS?
THanks
Best regards,
Antonio
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Greetings
I would like to know if there is any limit on command line size?
Thanks
Antonio
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Olá Ricardo :)
Thanks for the feedback. Just one last question: is there any known
limitation for using this encoding in Grass Python Scripts? (
# -*- coding: utf-8 -*-
Thanks
Antonio
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Greetings
I would like to include some sentences with characters like á ã àó in my
grass.message strings. It seems it's not possible Because I get this
grass.fatal(_('á'))
I get:
File C:/local/scripts/x.teste, line 41
SyntaxError: Non-ASCII character '\xe1' in file
Greetings
I just saw this message (bellow) in GRASS-translation mailing list and I
decided to duplicate this topic here:
Besides the buttons that I mentioned yesterday, I nottest that also when
I open a script (e.g. i.tasscap) Only the run button is translated.
Close, Stop, Copy and help
Greetings
I'm using grass.Popen like this:
externalProcess = grass.Popen(cmd, stdout=grass.PIPE, stderr=grass.PIPE,
cwd=tempfile)
It seems that I'm getting some error while running this function but the
only thing that is printed in my command Output window is:
, deleting, opening external configuration files bla bla and
now I'm getting this sort of errors when I try to overwrite over
existing data or when I try to delete some files.
What might be happening?
Thanks
Antonio
Glynn Clements wrote:
António Rocha wrote:
Ok it has removed but when I try
LULC_new_clump10@National
misc: couldn't be removed
So it wasn't removed. My question is:
1- Why it's repeating the Mapset information (new_clump10@area@area)
That is odd right? Maybe that is what is messing with the system
Thanks
Antonio
Glynn Clements wrote:
António Rocha wrote:
Ok it has removed
@area]. Remove
forced.
Removing raster new_clump11@area
misc: couldn't be removed
António Rocha wrote:
Hi again :)
Ok the main problem is that I'm using r.statistics with
base=new_clump10 and cover= myscript.tmpV1
If I try to remove new_clump I get:
g.remove -f rast=new_clump10@area
[new_clump10
Ok it has removed but when I try to write over that file I get errors
like Permission DENIED.
WHat can I do to fix this?
Glynn Clements wrote:
António Rocha wrote:
I'm trying to remove a file named new_clump@Area and I get this error:
[new_clump@Area] is a base map for [myscript.tmpV@Area
Greetings
I'm trying to remove a file named new_clump@Area and I get this error:
[new_clump@Area] is a base map for [myscript.tmpV@Area]. Remove forced.
misc: couldn't be removed
I'm already using -f flag from g.remove function.
myscript.tmpV was a file that I generated from this new_clump. But,
Greetings all,
I have a python script from where I need to run an external binary (in
Windows). This external binary (not developed by me) uses an
input_parameter file to configure binary and get other parameters. The
problem is that this binary requires that in my active folder I have my
Greetings
I have used r.statistics to calculate the sum of a cover map based on a
base map. When I use the Query tool I get these:
598666.544966|9159452.159237||3996|7108
The first two corresponds to Geographic Location the third Base map
clump ID and the last one it corresponds to the value
Hi Glynn.
Thanks for your answer. Is there any other alternative, to resample
data, that uses another approach to solve tie events?
THanks
Antonio
Glynn Clements wrote:
António Rocha wrote:
I'm planning on using r.resamp.stats in order to resample a grid to a
coarser resolution. Since
Greetings
I'm planning on using r.resamp.stats in order to resample a grid to a
coarser resolution. Since I'm using this function with classes I will
use mode method (more frequentclass to fall into a destination cell is
the chosen). My question is: when I have a tie between two classes, how
Greetings
I'm using i.gensig and I'm having some problmes while generating
signature files. Why? bcause my covariance calculus is placing negative
values in the diagonal which is impossible. Has anyone detected any
problem with i.gensig?
Thanks
Antonio
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Greetings
I need to find, in a certain mapset, a list of files with a name that
match a certain string and count them. How can I do this? I'm
implementing this in a Py Script
Thanks
Antonio
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Hi Markus
It seems that it does exacly what I want. I just have one question:
I need to first set the region spatial resolution to 200 before I run
r.resamp.stats right?
THanks
Antonio
Markus Metz wrote:
2010/12/21 António Rocha antonio.ro...@deimos.com.pt:
Greetings
I have a raster
Hi
I'm using WinGRASS (6.4.1) in Osgeo4w and I'm having a problem in the
import of GRIB files. I'm using r.in.gdal, as I have used in Linux, and
I'm obtaining the following error:
ERROR 4: `C:\Data\GISDataBase\GRIB_codes\new03.grib' not
recognised as a supported file format.
What might be
Greetings
For a few training areas I'm obtaining the following comment (which
means that my signature files are created but empty):
Signature 1 not positive definite
What does this means?
Thanks
Antonio
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: 444000 Res:
30 |
| Range of data:min = 0 max =
3 |
So it matches. What might be causing this error?
Antonio
Markus Neteler wrote:
2010/11/18 António Rocha antonio.ro...@deimos.com.pt:
Greetings
I'm running GRASS
Greetings
I have a training raster map with values such as 3; 5; 7 ; 12 and, when
I run i.gensig those values are not included in the signature file.
Which means that, if I run i.maxlik, I need to do some reclassification.
Is it possible to run i.gensig and keep class values in the signature?
Luisa I believe it is pretty simple now .
When in d.vect check -a flag (Get colors from map table column)
I believe it works just fine (that final part.. about applying v.colors
I had the same problems)
Antonio
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Greetings
I've created a raster based on region (let's call it A). Now, I have
changed my region (B for example) and I need to check (in a Py Script)
if my raster has any valid value in this new region. How can I do that?
Thanks
Antonio
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Helmut is absolutely right. Not only the WinBinaries but also my own
WinGRASS installers are all ok when it comes to HTML Browser. only my
OSGEO4W is not being able to launch IE.
I've fixed ticket 980 in all cases in the nsis-installer, so the available
standalone WinGrass-installer
Greetings
I have a wiNGRASS installation, based on OSGEO4W GRASS compilation, but
I'm having a difficulty on launching manuals. When i run g.manual wxGUI
I get this error:
Starting browser C:\Program Files\Internet Explorer\iexplore.exe for
module wxGUI...
I have a Python script with the following:
# Conversion to at-sensor brightness temperature
grass.mapcalc($raster_file= $K2/log(($K1/$L)+1),
raster_file=raster_file, K2=K2, K1=K1,L= tempL)
grass.mapcalc($raster_file= if($raster_file 0, null(),
$raster_file),
Hi there
I have sent a similar message to this
http://lists.osgeo.org/pipermail/grass-user/2010-September/057903.html
but to the wingrass mailing list.
Since there is no follow up on this subject in this mailing list I
wanted to know if anyone found any answer to this? Because I'm having
the
Greetings
I'm trying to find if GRASS includes some-sort of way to
detect/eliminatd cloud cover and shadows from LANDSAT Images.
The only thing I found was this:
http://svn.osgeo.org/grass/grass-addons/imagery/i.landsat.acca/description.html
But:
1- has anyone tried/used this? Is this useful
Greetings
I'm doing some image processing python script with requires the
calculation of many intermediate rasters. for example:
x=a+b+c
alpha=x-(b^gama)
y=c*alpha+b
One possibility is integrating all of it in one expression but I'm
afraid of having some minor error in expression so I prefer
Greetings
I have successfully compiled svn6.4.0 versions with OSGEO4W compilation
tutorial/wiki.
Now, I have also successfully compiled svn6.4.1 version with OSGEO4W
following the same steps but, when I select the GRASS -wxpython icon on
my Desktop, instead of initiating GRASS6.4.1 is calls
Hi
I have 2 vectors (each one is a square) that are not over-imposed and I
need to merge them in a single file/vector. How can i do that?
Thanks
Antonio
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Hi,
I'm using Georrectification module (WxGUI) and I have one question:
Before the launch of Georrectification panel, Select image/map to
display for GCP creation is it possible to display an RGB composite
instead of a single Grayscale image?
Thanks
Antonio R
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Greetings
I'm implementing a Python Script and I need to know one thing related
with Modules Interfaces: can I have a drop-down menu list of multiple
groups? Instead of just selecting one group (e.g. i.maxlik) select more
than one (multiple)?
Thanks
Best regards
Antonio
__
Hi there,
I have tested r.univar.zonal (pretty useful!!) but now I have one question:
- Is it possible to calculate the most frequent value inside a zone? (I
don't think so
If not, is there any other way to calculate this in GRASS?
Thanks
Antonio
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Greetings
I have retriecve a Pixel coordinates but instead of lat lon I want
row/col. As far as I can see, r.what only retrieves Lat/lon not row/col.
How can I do this?
Thanks
Antonio
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Hello Luisa
Regarding Hamish suggestion I would say to do this:
1- Define boundaries (without centroids) in Tcl/Tk digitizer
2- v.centroids
3- v.t.rast with attributes as cat.
Regarding point 1, I don't know if you should add centroids. Maybe,
v.centroids won't work.
__
Greetings
I've installed GRASS weekly snapshots in Windows (osgeo4w) by using
CompileOnWindows Wiki.
Today I tried to install latest snapshot (24_07_2010) and I got this error:
checking External PROJ.4 version... 470
checking for location of External PROJ.4 library...
checking for pj_get_def
Hello Etienne DELAY
YOu have skipped the part where the signatures are produced.
Take a look at:
http://grass.osgeo.org/gdp/html_grass64/imageryintro.html in Image
classification
Hope it helps
Antonio
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Greetings
I have successfully installed winGRASS following this instructions:
http://trac.osgeo.org/grass/wiki/CompileOnWindows
I had a few problems with my current grass installation so I decided to
Download grass-6.4.svn_src_snapshot_2010_07_18 version (from here:
Greetings
I have developed a Python script for GRASS in Linux, that calls a
external module, and now I have tried to compile it in Windows using
this command:
make -C callexternalmeanshift.py
MODULE_TOPDIR=/c/osgeo4w/apps/grass/grass-6.4.0svn
but I get this error:
Traceback (most recent
Greetings
I believe few persons have already sent a message similar to this one
but here goes: I'm looking for a object-opriented segmentator in GRASS:
has anyone ever programmed or addpated some module/processing chain in
order to get a object-oriented segmentator?
Thanks
Antonio
r.info displays normal information such as Extent, resolution etc... So
it seems all ok
Hamish wrote:
António wrote:
I'm using r.in.gdal to import Landsat7 images downloaded
from USGS website. These landsat images are distributed in
UTM-WGS84 for the specific zone. in this case I'm working
Hello Markus
I have just tested that and it seems to be the best solution. But in
this case I didn't know that it was all set to north.
Markus Neteler wrote:
2010/7/7 António Rocha antonio.ro...@deimos.com.pt:
Hi there,
I'm using r.in.gdal to import Landsat7 images downloaded from USGS
Hi there,
I'm using r.in.gdal to import Landsat7 images downloaded from USGS
website. These landsat images are distributed in UTM-WGS84 for the
specific zone. in this case I'm working with images from Brazil (WGS84
UTM ZONE 24S). So first I created an Location based on EPSG:32724.
Here goes
Thanks Eloi but this only gives me the number of pixels (number of lines
and columns) not the pixel resolution. Is there a retrieve this
information in a Python script (e.g. using python GDAL)?
Thanks
Antonio
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Hello Mark
I know that I can retrieve that information with gdalinfo. But I need to
have it on a variable and get/use it in a Python Script.
Mark Seibel wrote:
If you use gdalinfo on an image, it will output the Pixel Size.
Hope that helps.
Mark
2010/6/28 António Rocha antonio.ro
Hi Luisa and Hamish and the rest
While I was reading your log file I realized two things:
1- You only have a problem with libgrass_display.dll
2- GRASS cannot find -lgrass_raster
This is the creation of libgrass_display.dll:
gcc -shared -o
Greetings
Since Luisa and few others are posting regarding this topic I decided to
perform this compilation of GRASS on MS-WINDOWs and I followed the exact
steps but made a few updates in Libraries.
MsysCORE- 1.0.14-1
bin-utils 2.20.51-1
mingw-make 3.81-20090910 (newer version)
mingw-utils
Greetings
In my previous email I used GRASS6.4.0RC6 to compile with OSGEO4w now,
following Luisa email, I tried with latest snapshot and I got errors in
the following modules:
Errors in:
/osgeo4w/usr/src/grass-6.4.svn_src_snapshot_2010_06_12/lib/db/sqlp
Hi Luisa
I'm no expert in OSGEO4W but I believe you should
1- shut down Msys and reboot the PC
2- Try again
I believe that you might have 1 problem: You don't have an include
folder. I don't know how can you add it to your GRASS installation by
using OSGEO4W. But that is not one of the steps
Luisa, I believe Glynn and Martin can help you out on this but, I
believe you will have to change grass/include/make (Platform.make ) in
order to be adequate with your installation. Is this right Glynn? If so,
shouldn't this be added to that Wiki? (if it makes sense, I volunteer
for that)
Hi all
Well, since I'm only evaluating (for now) how to import GRIB's into
GRASS, I wanted to test the r.region solution.
Can anyone describe me what to do regarding that suggestion?
Hamish, about the patch, I'm using GDAL1.7 so I cannot apply your patch.
I'm going to reply on this in GDAL
Hello Hamish.
Yest, I used a NOAA's tool to verify it and it's misplaced. I will take
a look at those tickets that you mention.
About this: /There is a cell-registration bug in GDAL: (grid vs
cell-center convention) cells are all offset to the east and south by
half a cell. You can fix
Hi Thomas and GRASS-people
THanks for your scripts Thomas
I have one question regarding Hamish's link.
/There is a cell-registration bug in GDAL: (grid vs cell-center
convention) cells are all offset to the east and south by half a cell.
You can fix this by hand with the r.region
Thanks Hamish
I thought that random cells are retrieved from valid map cells. Or not?
Antonio
Hamish wrote:
António wrote:
I need to randomly select non-null cells from a given map.
I tried r.random.cells but I cannot define a maximum number
random cells and some selected random cells
Hi. I missed that r.random :) It seems to do what I need. I just need to
understand a bit more what is the COVER parameter
Thanks nikos
Nikos Alexandris wrote:
António Rocha:
Hi there
I need to randomly select non-null cells from a given map. I tried
r.random.cells but I cannot define
Greetings
I have polygon that I want to use to define an for which I want to
calculate some indicators (almost as a mask). Is it possible to use it
directly in mapcalculator or do I have to convert it to RASTER and only
then I can use it in mapcalculator as a mask?
Thanks
Best regards,
Christian Schwartze wrote:
There is no way to use a vector geometry in mapcalculator (or mapcalc)
directly, hence, you have to convert it to raster before.
Christian.
--
From: António Rocha antonio.ro...@deimos.com.pt
Sent: Thursday, May 27, 2010 2:08
, now, it
seems that it's not growing. Is it doing some file-check or something?
Thanks
Antonio
Markus Metz wrote:
2010/5/7 Markus Neteler nete...@osgeo.org:
2010/5/7 António Rocha antonio.ro...@deimos.com.pt:
Greetings
I've a Landsat image with 6 bands in Tif format. I need to import
Greetings
I'm exporting data from GRASS to Gtif and Shapefiles. While r.out.gdal
obays my Region definition v.out.org no. It exports all extent not the
specified region. Wasn't it suppose to export only for defined region?
Thanks
__ Information from ESET NOD32 Antivirus, version of
Greetings
I've a Landsat image with 6 bands in Tif format. I need to import into
grass, do some processing and export the same band in a Stack.
The import is easy using r.in.gdal but my difficulty is to export 6
bands in one single file. Is it possible using GRASS?
Thanks
Best regards,
Antonio
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