[GRASSLIST:5510] Re: Newcomer Q:Missing libraries on OS X

[Moritz Lennert]

On Tue, January 25, 2005 7:38, Michael Barton said:
> Matt,
>
> Well, it would be good if you have some metadata on these files. Where do
> they come from? You must have some information about them. Nevertheless, if
> you check the Œextend extents...¹ to match map checkbox, both v.in.ogr and
> r.in.gdal will automatically do this for you. This way, you don¹t have to
> make sure that your region exactly matches the extents and resolution of the
> original data.
>
> Michael
>
> On 1/24/05 6:13 PM, "Matt Sakals" <msakals at interchg.ubc.ca> wrote:
>
>> Michael,
>> Thank you for your help.
>> How do I determine what the extents are? What are the units? How do I know
>> what the extents are if I can't open the data?


You can also just create any location (x,y with extent 1 in each direction is
ok) and then use the "location" option in either v.in.ogr or r.in.gdal to have
the program automatically create a new location with the correct projection
and extents. Once this is done, you have to leave the current (x,y) GRASS
session and restart GRASS into the newly created location.

I guess it would be great if this could be integrated into the GRASS start-up
dialog...


Moritz


>>
>> Matt Sakals, PAg, GIT
>> Sustainable Forest Management Laboratory
>> University of British Columbia
>> mailto:msakals at interchg.ubc.ca
>> http://sustain.forestry.ubc.ca/home.html
>> 785 Dickens St., Trail, BC, V1R 2B7
>> ph. 250.368.3191
>> m. 250.231.0951
>> __________________________________
>> On 24 Jan 2005, at 15:57, Michael Barton wrote:
>>
>>> Matt,
>>>
>>>  Here are the steps to get your data into GRASS. The learning curve for
>>> GRASS
>>> is about the same as for ArcView (if you can remember starting from
>>> scratch).
>>> Knowing ArcView can be helpful and frustrating. You have some idea of what
>>> is
>>> possible, but the ways to do it are sometimes quite different‹but not
>>> always.
>>> Now that I¹ve mastered GRASS many things are much easier than in ArcView,
>>> some are harder, and others are just different. Hope this helps.
>>>
>>>  Michael
>>>
>>>  Use v.in.ogr (/files/import/vector/various formats using OGR) for the
>>> shape
>>> files.
>>>
>>>  1. Make sure you are in a location with the correct projection parameters
>>> and extents.
>>>
>>>  2. Put the path to directory with the files in the ³OGR datasource name²
>>> box
>>> (path the DIRECTORY only, without the shapefile name).
>>>
>>>  3. Put the new name of the GRASS vector file you want to create in the
>>> ³name
>>> of output vector² field
>>>
>>>  4. Put the name of the shapefile in the ³OGR layer name² box WITHOUT the
>>> .shp extension. (You can check the List available layers... checkbox at the
>>> bottom to see a list of the names)
>>>
>>>  5. You will probably have to check the ³Override projection² checkbox
>>> because shape files don¹t contain projection information (except with new
>>> ArcGIS).
>>>
>>>  6. You may want to check the ³Extend location extents...² box if the map
>>> is
>>> bigger than the region you are importing into.
>>>
>>>  This should work.
>>>
>>>  Use r.in.gdal for the ArcView grid file. (/files/import/raster/various
>>> formats using gdal).
>>>
>>>  1. Browse to the hdr.adf file inside the grid folder (not the info folder)
>>> to put in the ³Raster file to be imported² box
>>>
>>>  2. Give a name to the new GRASS raster file you are creating
>>>
>>>  3. You may have to check the ³Override projections...² checkbox, and may
>>> want to check the ³Extend location extents...² checkbox
>>>
>>>  This should import fine.
>>>
>>>  Once you have imported the files go to g.region (/gis/region/manage
>>> region)
>>> and set the region to match either of your maps. This makes sure that you
>>> are
>>> looking at the part of the world where you just imported data.
>>>
>>>  Use the GIS manager to display your data.
>>>
>>>  On 1/24/05 3:58 PM, "Matt Sakals" <msakals at interchg.ubc.ca> wrote:
>>>
>>>
>>> Hi,
>>>  I am still having troubles getting going with GRASS and don't know where
>>> to
>>> start. As I see it the big downside to continuous improvement is that the
>>> support documents are always out of date. This whole venture is extremely
>>> humbling as I am an advanced ArcView user, but can't get going here.
>>>
>>>  I am trying to import .shp files and ArcView grids, they are projected
>>> according to BC Albers (http://srmwww.gov.bc.ca/gis/bceprojection.html). I
>>> am
>>> using GRASS 6.0 beta on OSX, would you be able to help me get off the
>>> ground?
>>>
>>>  Here is a sample data set of data I would like to work with:
>>>
>>>
>>>
>>>
>>>  Many thanks, it would be great if you can find the time to help me out,
>>>
>>>  Matt Sakals, PAg, GIT
>>>  Sustainable Forest Management Laboratory
>>>  University of British Columbia
>>>  mailto:msakals at interchg.ubc.ca
>>> http://sustain.forestry.ubc.ca/home.html
>>>  785 Dickens St., Trail, BC, V1R 2B7
>>>  ph. 250.368.3191
>>>  m. 250.231.0951
>>>  __________________________________
>>>  On 19 Jan 2005, at 22:24, Michael Barton wrote:
>>>
>>>
>>>  On 1/19/05 8:30 AM, "Matt Sakals" <msakals at interchange.ubc.ca> wrote:
>>>
>>>
>>> Hi,
>>>  I am trying to install GRASS, and have used the GRASS complete download
>>> for
>>> OS X from http://wwwamb.bologna.enea.it/forgrass/download.htm
>>>  but I don't know if my libraries have been installed; I can't find a
>>> grasslib folder on my computer anywhere.
>>>
>>>
>>>  Matt,
>>>
>>>  If you have run the install program for the grass libraries in Lorenzo
>>> Moretti¹s GRASS complete, they are probably OK. They are located in
>>> /usr/local/grasslib. This is a Œhidden¹ directory on a Mac. You can check
>>> it
>>> by either...
>>>      1. Using the terminal program and entering
>>>      >>cd /usr/local/grasslib
>>>      >>ls
>>>
>>>      2. Selecting ŒGo to folder¹ from the ŒGo¹ menu in the finder. Enter
>>> /usr
>>> and press ŒGo¹
>>>      You should be able to navigate to /usr/local/grasslib then.
>>>
>>>
>>>
>>>  I don't know if GRASS is working right or not because I am new, but in the
>>> tutorial it crashes when trying to import .shp files.
>>>
>>>
>>>  You don¹t say which version of GRASS you are using. But I recommend using
>>> GRASS 6.0.0beta1. It is posted on my mirror site for Lorenzo¹s files. I do
>>> NOT recommend using 5.7.0 because it is problematic. GRASS 5.4 is fine
>>> also,
>>> but 6.0 does more and generally does it more better. You should have no
>>> trouble importing a *.shp file using v.in.ogr in GRASS 6.0.
>>>
>>>  Hope this helps.
>>>
>>>  Michael
>>>
>>>
>>>  ____________________
>>>  C. Michael Barton, Professor of Anthropology
>>>  School of Human Evolution and Social Change
>>>  PO Box 872402
>>>  Arizona State University
>>>  Tempe, AZ  85287-2402
>>>  USA
>>>
>>>  Phone: 480-965-6262
>>>  Fax: 480-965-7671
>>>  www: <www.public.asu.edu/~cmbarton>
>>>
>>>
>>>
>>>
>>>
>>>
>>>  ______________________________
>>>  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
>>>
>>
>
>
> ____________________
> C. Michael Barton, Professor of Anthropology
> School of Human Evolution and Social Change
> PO Box 872402
> Arizona State University
> Tempe, AZ  85287-2402
> USA
>
> Phone: 480-965-6262
> Fax: 480-965-7671
> www: <www.public.asu.edu/~cmbarton>
>
>