[R] Help with RGDAL (SOLVED)

David Winsemius dwinsemius at comcast.net
Sat Oct 31 00:17:59 CET 2009 

I had earlier downloaded what I thought to be the most recent version  
of rgdal (rgdal_0.6-18.tgz). After checking to see that all of the  
other dependencies in the configure files were met, I finally got  
around to checking the version of the rgdal and found my problem. It  
was different (and not as recent as) the target that your code was  
expecting. Downloaded version 0.6-20 and ... Success. Your help is  
greatly appreciated.

-- David


On Oct 30, 2009, at 6:16 PM, cls59 wrote:

>
>
> Pablo Alvarez-2 wrote:
>>
>>
>> Hello,
>> We (two mac users) have been attempting to install rgdal from
>> "http://www.kyngchaos.com/software:frameworks", given that it is not
>> available as a binary on the CRAN (binaries) of the "Package  
>> Installer".
>>
>>
>
> The GDAL library contains an impressive collection of utilities and  
> also
> leverages several other libraries such as HDF, netCDF and PROJ4,  
> just to
> name a few. Building and distributing a binary R package that  
> contains the
> GDAL library bloats the size of the package and causes redundancies  
> if a
> user already has GDAL installed somewhere else on their system. It  
> also
> creates a lot of extra work for the package maintainer.
>
> This is probably done for Windows because a run-of-the-mill Windows  
> system
> is utterly incapable of building anything from source. Linux and OS X
> systems are perfectly capable, so it is expected that you can build  
> the
> package from source and use your installed version of GDAL.
>
>
>
> Pablo Alvarez-2 wrote:
>>
>>
>> I have also tried to solve this problem by looking on the net for  
>> an old
>> question, and though I have found it, the answers do not help very  
>> much
>> because our porgraming skills are embryonic.
>>
>>
>> Our GIS professor has suggested we ask you guys how to proceed with  
>> the
>> CRAN (source). Any suggestions or direction to an old document  
>> dealing
>> with this?
>>
>> Thank you very much for your help,
>> Pablo and Margarita
>> PS. We have already installed: GDAL (for QGIS) and "sp" (for R)
>>
>>
>
> I've built the GDAL library and installed rgdal a few times-- it's  
> typically
> one of the first things I do after wiping or reinstalling my OS X  
> system or
> a Linux system. Building software from source can be a tricky  
> business with
> a steep learning curve-- but once you figure out some of the  
> patterns it
> becomes quite doable (as long as those darn platform-specific issues  
> don't
> cut you off at the kneecaps).
>
> The rgdal package contains a Configure script that is run during
> installation and attempts to locate the GDAL library. When building  
> software
> on Unix/Linux, there are three kinds of folders containing various  
> items of
> interest that compilers and linkers will frequently pester you  
> about. These
> are:
>
>  * "lib" folders-- these contain libraries that hold code you are  
> trying to
> use.
>
>  * "include" folders-- these contain header files that tell the  
> compiler
> how to use
>     the code in the libraries.
>
>  * "bin" folders-- these contain scripts and programs that may help  
> the
> Configure script,
>     or the program you are building do the things they do.
>
> I suspect the Configure script for the rgdal package only checks  
> standard
> Unix/Linux folders such as /usr/bin or /usr/local/lib. The Framework  
> package
> provided by William Kyngesburye installs GDAL Mac-Style, which means  
> these
> folders are located in:
>
>  /Library/Frameworks/GDAL.framework/unix/
>
> And
>
>  /Library/Frameworks/PROJ.framework/unix/
>
> Fortunately, R allows us to pass hints to configure during package
> installation in order to help it find what it is looking for.
>
> So, grab the source tarball of rgdal from:
>
>  http://cran.r-project.org/web/packages/rgdal/index.html
>
> I'm also using the PROJ4 and GDAL frameworks installed by the GDAL  
> Complete
> framework, available from:
>
>  http://www.kyngchaos.com/software:frameworks/
>
> Also, make sure you have installed the "Developer Tools" contained  
> on your
> OS X System Software CD as these provide C compilers and other tools  
> needed
> to build the code in the rdal package.
>
> Now pop open a Terminal. Assuming you saved the package in your  
> Downloads
> folder, execute the following.
>
>  cd ~/Downloads
>  R CMD INSTALL rgdal_0.6-20.tar.gz
>
> R will start to install the package, and then wipe out with a  
> message that
> includes:
>
>  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.
>
>
> gdal-config is a little script who's sole purpose is to tell Configure
> scripts whatever they want to know about a GDAL installation.  
> Scripts and
> programs that accompany a library are commonly installed in a "bin"  
> folder.
> So given what I've noted above about the install location used by  
> the GDAL
> framework, we can give rgdal's Configure script a hint:
>
>  R CMD INSTALL --configure-args=\
>
> "--with-gdal-config=/Library/Frameworks/GDAL.framework/unix/bin/gdal- 
> config"
> \
>    rgdal_0.6-20.tar.gz
>
> The R installer now spits out another error:
>
>  Error: proj_api.h not found.
>  If the PROJ.4 library is installed in a non-standard location,
>  use --configure-args='--with-proj-include=/opt/local/include'
>  for example, replacing /opt/local/* with appropriate values
>  for your installation. If PROJ.4 is not installed, install it.
>
> PROJ4 has no "proj4-config" script, so we will probably need to tell
> Configure where both the lib and include folders are. The following  
> command:
>
>  R CMD INSTALL --configure-args=\
>
> "--with-gdal-config=/Library/Frameworks/GDAL.framework/unix/bin/gdal- 
> config
> \
>    --with-proj-lib=/Library/Frameworks/PROJ.framework/unix/lib \
>    --with-proj-include=/Library/Frameworks/PROJ.framework/unix/ 
> include" \
>    rgdal_0.6-20.tar.gz
>
> Should provide Configure with enough information to build and  
> install the
> package.
>
> When smashed onto one line (for easier copying and pasting) the above
> command is:
>
> R CMD INSTALL
> --configure-args="--with-gdal-config=/Library/Frameworks/ 
> GDAL.framework/unix/bin/gdal-config
> --with-proj-lib=/Library/Frameworks/PROJ.framework/unix/lib
> --with-proj-include=/Library/Frameworks/PROJ.framework/unix/include"
> rgdal_0.6-20.tar.gz
>
>
> Hope this helps!
>
> -Charlie
>
>
>
> -----
> Charlie Sharpsteen
> Undergraduate
> Environmental Resources Engineering
> Humboldt State University
> -- 
> View this message in context: http://old.nabble.com/Help-with-RGDAL-tp26135289p26137651.html
> Sent from the R help mailing list archive at Nabble.com.
>
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David Winsemius, MD
Heritage Laboratories
West Hartford, CT

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