[gdal-dev] Re: rgdal source code

Jason Roberts jason.roberts at duke.edu
Fri Mar 26 12:26:39 EDT 2010 

Roger,

Pardon me for interrupting with a question I've had for a while but not
asked you.

On Windows at least, it appears that rgdal renames the GDAL shared library
(e.g. gdal16.dll) to an rgdal-specific name (e.g. libgdal-1.dll). On
windows, this has the advantage of avoiding DLL name collisions, allowing
rgdal to coexist with other libraries that also load GDAL using its
traditional name (e.g. gdal16.dll). Is that why rgdal renamed the shared
library? Or was it done for another reason?

Thanks,

Jason

-----Original Message-----
From: gdal-dev-bounces at lists.osgeo.org
[mailto:gdal-dev-bounces at lists.osgeo.org] On Behalf Of Roger Bivand
Sent: Friday, March 26, 2010 11:09 AM
To: Ivan Lucena
Cc: gdal-dev at lists.osgeo.org
Subject: Re: [gdal-dev] Re: rgdal source code

On Fri, 26 Mar 2010, Ivan Lucena wrote:

> Roger,
>
> Yes, you are right. The source code is on  rgdal_0.6-25.tar.gz, I know,
but the instructions to build on Windows are on the rgdal_0.6-25.zip package
on README.windows, where it says:
>
> ---
> The R Windows binary rgdal package is built against an FWTools Windows
binary, using VC++.
>
> Notes:
>
> Building rgdal.dll in rgdal/src:
>
> cl /MT /Ox /EHsc /D "WIN32" /c /I E:\rsb\R\R-2.2.1pat\include /I
C:\Programfiler\FWTools1.0.0a7\incl
> ude *.cpp
>
> link /dll /out:rgdal.dll /def:RGDAL.def gdal-bindings.obj ogr_geom.obj
ogr_proj.obj ogrsource.obj E:
> \rsb\R\R-2.2.1pat\lib\Rdll.lib
/libpath:"C:\Programfiler\FWTools1.0.0a7\lib" gdal_i.lib
> ---
>
> So I am trying to change it a little bit in order to build against GDAL
1.7.1 (or trunk).
>
> How does that sounds to you? Good idea?

Ivan,

No, the README.windows file is of course in the source tarball, in the 
inst directory (as usual for R packages).

If you install the Windows binary, you'll see that it includes GDAL 1.7.1, 
that is the message reporting the GDAL runtime version shown when the 
package is loaded. The only reason for doing anything at all is if you 
need drivers not already provided for your own purposes. Then you might 
need to review the README.windows file and, for example, build against 
current FWTools or OSGEO4W distributions. Please do check the drivers 
first with ogrDrivers() and gdalDrivers() in R after loading the package.

Roger

>
> Regards,
>
> Ivan
>
>
>>  -------Original Message-------
>>  From: Roger Bivand <Roger.Bivand at nhh.no>
>>  To: gdal-dev at lists.osgeo.org
>>  Subject: [gdal-dev] Re: rgdal source code
>>  Sent: Mar 26 '10 09:31
>>
>>
>>  The root cause of the sourceforge issue is in a message posted
2010-03-25
>>  from their admin:
>>
>>  "Update on the current CVS outage that is affecting projects whose UNIX
>>  names start with the letters  a, e, h, i, m, o, r, s, w, z.
>>
>>  The work being done on this server may take up to two days to resolve.
We?re
>>  working to resolve this with alacrity and assure maximum stability and
>>  performance."
>>
>>  So access should be back by the end of March.
>>
>>  Roger
>>
>>
>>  Roger Bivand wrote:
>> >
>> > On Thu, 25 Mar 2010, Ivan wrote:
>> >
>> >> Roger,
>> >>
>> >> I in fact did my homework, but I've got a C.
>> >>
>> >> As you can see on my previous message I did find the RGDAL Source
Forge
>> >> page
>> >> where it shows the CVS instructions ===> [1] <===. That would give a
B+
>> >> at
>> >> least, no? If it worked.
>> >>
>> >> cvs -d:pserver:anonymous at rgdal.cvs.sourceforge.net:/cvsroot/rgdal
login
>> >> Logging in to
>> >> :pserver:anonymous at rgdal.cvs.sourceforge.net:2401/cvsroot/rgdal
>> >> CVS password:
>> >> cvs [login aborted]: connect to
>> >> rgdal.cvs.sourceforge.net(216.34.181.108):2401 failed: Connection
refused
>> >>
>> >> That was a dead end.
>> >
>> > Correct. When I tried, anonymous checkout from sourceforge was also
>> > blocked - nothing we've done, maybe something sourceforge has done. I
have
>> > changed the main description to:
>> >
>> > "WARNING: rgdal is only available for download from CRAN - this
repository
>> > is only used for development and browsing of source code. NEVER use the
>> > very out of date file bundles for download from this site!!! See
>> > http://rgdal.sourceforge.net for link."
>> >
>> > Short of migrating to R-forge (which I have done for another R package,
>> > spdep), there isn't much that can be done with sourceforge, I'm afraid
>> > (sourceforge isn't my favorite place to be).
>> >
>> > cc: Tim: Any idea why the anonymous checkout fails? Longer term - is
>> > migration to SVN on R-Forge worth considering?
>> >
>> > Roger
>> >
>> >>
>> >> I download some of those zip packages from rgdal.sourceforge.net but
they
>> >> only have binary that requires FWTools installation.
>> >>
>> >> Another dead end.
>> >>
>> >> But you are right I should have search a little more to find the CRAN
>> >> page.
>> >> So I am downloading rgdal_0.6-2.5.zip now. Let's see how it goes.
>> >>
>> >
>> > That is the current Windows CRAN binary, get rgdal_0.6-25.tar.gz for
the
>> > source. Install the Windows binary within R - do *not* treat the zip
>> > archive as an archive - it is just a frozen binary version of the
source
>> > for Windows.
>> >
>> > Roger
>> >
>> >> Thanks you so very much Roger. Have a nice day.
>> >>
>> >> Ivan
>> >>
>> >> Roger Bivand wrote:
>> >>> Please, do your homework!
>> >>>
>> >>> Google on "R rgdal" gives:
>> >>>
>> >>> http://cran.r-project.org/web/packages/rgdal/index.html
>> >>>
>> >>> http://rgdal.sourceforge.net/
>> >>>
>> >>> where the latter says: "The R contributed package rgdal is available
>> >>> from
>> >>> CRAN", that is the first link. On CRAN you will find both the source
>> >>> tarball
>> >>> and a Windows 32-bit binary including 1.7.1 with standard drivers and
>> >>> expat
>> >>> for reading KML etc.
>> >>> The sourceforge site is used exclusively as a CVS repository for
>> >>> developers
>> >>> - it hasn't been used for software distribution since about 2004; the
>> >>> CRAN
>> >>> distribution mechanism is far more robust and "just works".
>> >>>
>> >>> Refer to show.file(system.file("README.windows", package="rgdal")) if
>> >>> you
>> >>> need to build from source for more exotic drivers.
>> >>>
>> >>> The relevant mailing list is R-sig-geo,
>> >>> https://www.stat.math.ethz.ch/mailman/listinfo/R-SIG-Geo/, and the
best
>> >>> point of entrance, the R Spatial task view:
>> >>> http://cran.r-project.org/web/views/Spatial.html.
>> >>>
>> >>> Hope this helps,
>> >>>
>> >>> Roger
>> >>>
>> >>>
>> >>>
>> >>> Ivan-5 wrote:
>> >>>> Hi there,
>> >>>>
>> >>>> I am trying to get RGDAL to work with GDAL 1.7.1 but I cannot access
>> >>>> the
>> >>>> source code [1] and the binaries for Windows depend on some old
version
>> >>>> of
>> >>>> gdal_fw.dll. Does anybody have any clue?
>> >>>>
>> >>>> Regards,
>> >>>>
>> >>>> Ivan
>> >>>>
>> >>>>
>> >>>> [1] - http://sourceforge.net/scm/?type=cvs&group_id=84716
>> >>>> _______________________________________________
>> >>>> gdal-dev mailing list
>> >>>> gdal-dev at lists.osgeo.org
>> >>>> http://lists.osgeo.org/mailman/listinfo/gdal-dev
>> >>>>
>> >>>>
>> >>>
>> >>>
>> >>> -----
>> >>> Roger Bivand
>> >>> Economic Geography Section
>> >>> Department of Economics
>> >>> Norwegian School of Economics and Business Administration
>> >>> Helleveien 30
>> >>> N-5045 Bergen, Norway
>> >>>
>> >>
>> >>
>> >
>> > --
>> > Roger Bivand
>> > Economic Geography Section, Department of Economics, Norwegian School
of
>> > Economics and Business Administration, Helleveien 30, N-5045 Bergen,
>> > Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
>> > e-mail: Roger.Bivand at nhh.no
>> >
>> > _______________________________________________
>> > gdal-dev mailing list
>> > gdal-dev at lists.osgeo.org
>> > http://lists.osgeo.org/mailman/listinfo/gdal-dev
>> >
>> >
>>
>>
>>  -----
>>  Roger Bivand
>>  Economic Geography Section
>>  Department of Economics
>>  Norwegian School of Economics and Business Administration
>>  Helleveien 30
>>  N-5045 Bergen, Norway
>>
>>  --
>>  View this message in context:
http://n2.nabble.com/gdal-dev-rgdal-source-code-tp4799954p4804208.html
>>  Sent from the GDAL - Dev mailing list archive at Nabble.com.
>>  _______________________________________________
>>  gdal-dev mailing list
>>  gdal-dev at lists.osgeo.org
>>  http://lists.osgeo.org/mailman/listinfo/gdal-dev
>>
>

-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no

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