[GRASS5] Re: [GRASSLIST:10870] New GIS Manager adds transparency
to layers
Thomas Adams
Thomas.Adams at noaa.gov
Mon Mar 13 13:21:31 EST 2006
Michael,
Sorry; I should have tried this first… no problem when I startup from my
$HOME (login) directory. Typically I like to startup GRASS from my GRASS
database directory. Is this the anticipated behavior or should it be
considered a 'bug'?
Thanks for your feedback and great work!
Tom
Thomas Adams wrote:
> Michael,
>
> Where is GRASS/new display manager going to look for the .tmp
> directory? In the directory GRASS is started from; one's $HOME
> directory; other?
>
> Thanks,
> Tom
>
>
> Michael Barton wrote:
>> Something similar has just been reported on some lab computers
>> running GRASS
>> under Cygwin. Maybe it's a different issue, though because it only
>> happened
>> with a version of init.sh that automatically runs gism2. It seems to
>> run OK
>> if launched manually.
>>
>> Your GRASS in a non-standard location might be an issue. I'm not sure
>> where
>> the working directory error comes from. Is it a TclTk error (buttons
>> run,
>> cancel, details) or another kind of error (xwindows, bash, etc..)?
>>
>> The GIS Manager display works by creating PPM files in a temp directory
>> within your working GRASS mapset--set by g.tempfile. If you don't have
>> access to such a .tmp directory, you will have problems.
>>
>> Let me know if any of these gives you a clue to what is wrong.
>>
>> Michael
>>
>>
>> On 3/10/06 7:22 PM, "Thomas Adams" <Thomas.Adams at noaa.gov> wrote:
>>
>>
>>> Michael,
>>>
>>> I have installed the GRASS 6.1 CVS release dated 2006_03_04
>>>
>>> and followed your instructions in the README in
>>> _http://www.public.asu.edu/~cmbarton/files/grass_gismgr/
>>> <http://www.public.asu.edu/%7Ecmbarton/files/grass_gismgr/>_gism_rc4_20060307.
>>>
>>> tgz.
>>>
>>> First off, the installation using the old d.m works fine ‹ no errors.
>>> When I try the new gis.m, the interface tries to come up, but it stalls
>>> with an error Dialog that reads "Error getting working directory name:
>>> no such file or directory". If I select the Error Dialog 'OK' button,
>>> the GIS manager completes its startup. However, if I select a raster
>>> map
>>> to display and click on the refresh button (labeled: "Display active
>>> layers in the current region") in the "Map Display 1" window, I get the
>>> same Error Dialog as I got when I first started up the new GIS Manager
>>> (gis.m). Also, from the time of the startup of the GIS Manager, the
>>> 'status indicator' in the lower left of the "Map Display 1" window
>>> shows: "please wait..." ‹ this never goes away.
>>>
>>> Interestingly, if I select the NVIZ button, there is no problem
>>> displaying the raster I selected; so, NVIZ seems OK, but the raster map
>>> will never display in 2-D in the "Map Display 1" windowŠ
>>>
>>> Also, when I try to use the Init.sh file from gism_rc4_20060307.tgz, I
>>> get shared library problems: "libgrass_gis.so cannot open shared object
>>> file: No such file or directory" ‹ even though the library is in the
>>> GRASS lib directory. I should mention that due to system constraints,
>>> the entire GRASS distribution and other libraries (GDAL, PROJ, etc.)
>>> are
>>> in a non-standard location.
>>>
>>> A final question: should I be using the gis.m file from
>>> gism_rc4_20060307.tgz? I have tried both with and withoutŠ
>>>
>>> I'm running on a Redhat Linux system, FWIWŠ
>>>
>>> Tom
>>>
>>> Michael Barton wrote:
>>>
>>>> I¹ve just finished phase 2 of the GIS Manager update and it¹s pretty
>>>> exciting. At first glance, it looks a lot like the one I¹ve been
>>>> working on and have in the CVS now, but with a couple of important
>>>> exceptions. One is that transparency is now supported for all GRASS
>>>> layers.
>>>>
>>>> The second will probably generate the most discussion, so I¹m ready to
>>>> duck and run for cover. Now GRASS is consistent with other GIS
>>>> programs and more intuitive (as much as I am skeptical about that
>>>> term) in that the uppermost layer in the layer tree is also the top
>>>> map in the display. Related to this, new layers insert directly above
>>>> the currently selected layer instead of at the bottom of the layer
>>>> tree.
>>>>
>>>> The main changes come Œunder the hood¹ of this version of the GIS
>>>> Manager. It uses g.pnmcomp to composite a set of maps (each rendered
>>>> as *.PPM files) into a visual display. One of the results is that now
>>>> GRASS is significantly faster in adding new layers, turning layers on
>>>> and off, and changing layer attributes‹only the new or changed layer
>>>> needs to be rendered; the others will just be re-composited into a
>>>> display from existing PPM files. This all happens in a GRASS .tmp
>>>> directory, so that it doesn¹t clutter up your home directories. The
>>>> other important thing about this new architecture is that it makes
>>>> GRASS even less dependent on the xdriver and PNGdriver for
>>>> visualization. GRASS can become more easily portable to different OS¹s
>>>> and GUI frameworks. It is also more scriptable. You can write a script
>>>> that will create a complete, multilayered map, and output it to a
>>>> graphics file.
>>>>
>>>> One consequencer of this new architecture is that the GIS Manager does
>>>> not currently support display output to PNG files. With GDAL (required
>>>> for many GRASS features) and ghostscript installed, it does support
>>>> output to PPM/PNM, TIF, JPG, BMP, EPS, and PDF.
>>>>
>>>> Command line usage is still supported in several ways‹the old
>>>> xterminal is still there, there is the new command console, and you
>>>> can add command layers to the layer tree and display them.
>>>>
>>>> You can see a screen shot of semi-transparent soil vector areas
>>>> overlaying a raster shaded relief map at
>>>>
>>>> _http://www.public.asu.edu/~cmbarton/files/grass_screenshots/gism2-2.jpg
>>>>
>>>> <http://www.public.asu.edu/%7Ecmbarton/files/grass_screenshots/gism2-2.jpg>
>>>>
>>>> _
>>>> I¹ve committed all changes to the CVS. For those of you with binary
>>>> versions of GRASS who would like to try it, I¹ve posted packages you
>>>> can use to replace your current GIS Manager on my website. For full
>>>> functionality, you need a version of grass that is dated
>>>> 21-February-2006 or later. For those of you with a slightly earlier
>>>> version, I made a second package with all functionality minus
>>>> transparency. Here are the links.
>>>>
>>>> New GIS Manager files
>>>>
>>>> <_http://www.public.asu.edu/~cmbarton/files/grass_gismgr/
>>>> <http://www.public.asu.edu/%7Ecmbarton/files/grass_gismgr/>_gism_rc4_20060307
>>>>
>>>> .tgz>
>>>>
>>>> New GIS Manager files for people with recent, but pre-21 February 2006
>>>> binaries.
>>>>
>>>> <_http://www.public.asu.edu/~cmbarton/files/grass_gismgr/
>>>> <http://www.public.asu.edu/%7Ecmbarton/files/grass_gismgr/>_gism_rc4_20060307
>>>>
>>>> pre_02-21.tgz>
>>>>
>>>> Enjoy
>>>> Michael
>>>>
>>>> ______________________________
>>>> Michael Barton, Professor of Anthropology
>>>> School of Human Evolution and Social Change
>>>> Arizona State University
>>>> Tempe, AZ 85287-2402
>>>> USA
>>>>
>>>> voice: 480-965-6262; fax: 480-965-7671
>>>> www: http://www.public.asu.edu/~cmbarton
>>>> <http://www.public.asu.edu/%7Ecmbarton>
>>>>
>>
>> ___________________________
>> Michael Barton, Professor of Anthropology
>> School of Human Evolution & Social Change
>> Arizona State University
>> Tempe, AZ 85287
>>
>> WWW - http://www.public.asu.edu/~cmbarton
>> Phone: 480-965-6262
>> Fax: 480-965-7671
>>
>>
>
>
--
Thomas E Adams
National Weather Service
Ohio River Forecast Center
1901 South State Route 134
Wilmington, OH 45177
EMAIL: thomas.adams at noaa.gov
VOICE: 937-383-0528
FAX: 937-383-0033
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