Pre-GDAL 2: rgdal changes - from all according to their means
Roger,
I second Michael Sumner's excitement. I built a POSTGist SFCGAL stack based
on GDAL 2.0.0beta, anticipating that I could seamlessly integrate with R
and was disappointed that I couldn't use 2.0.0.beta because at the point
only sp-1.1-1 was supported.
I have a couple of future projects that are going to fundamentally depend
on GDAL and I hope to be able to address them from within R. As an R
beginner I'm happy I have in my notes on how to point to my /opt/gdal(
please excuse if generalizing between an installed /opt/gdal(2.0,0.beta and
/usr/local/gdal(earlier.build) build, but many people perhaps have not
been making a diary of R success(es).
In the simplest case it could be a reminder to us beginners how we might
load a library(rgdal("in this case 2.0.0.beta vs our normal
library(rgdal)). Well we are beginners, but we still want out stuff to
work and we want to contribute to a successful and comprehensive 2.2.0
release. So we'll run our particular research examples through 2.0.0 and
report results, if we know how to load one vs. another library.
If intermediate or expert, different examples would be deployed.
I apologize in advance if these issues or methods have already been
addressed at SVN and I failed to notice them. If that is the case I will
dig further, and please ignore me.
I think GDAL and rgdal are intrinsically important tools to this community
and everyone wants them to work; please just tell us, by general example,
how we might be best of service.
I hope the foregoing is comprehensible. My thoughts, and looking forward to
to contributing in a useful fashion to this important package (as a
beginner).
Cheers,
Chris
The second beta of GDAL 2 is now available, and as of revision 535 on
R-Forge, the legacy rgdal package passes R CMD check with either GDAL 1.11.2 (or earlier) or GDAL 2.0.0 beta 2. One or two issues are known (Integer64 in vector fields and FIDs not supported in R; gdalDrivers() reports both raster and vector drivers; the MapInfo File TAB driver doesn't work for writing, ...), but others remain to be discovered. For those who need rgdal in production, and can install the 2.0.0 beta, it would be a really good use of time to identify issues now, rather than when GDAL 2 starts to become the standard, stable release. Anyone else needing an itch to scratch is also, of course, welcome to contribute. The rgdal package will continue to condition on GDAL 1 or 2, so hopefully those users who do not need to move to GDAL 2 will not be affected. However, it is worth noting that GDAL is maintained by very, very, few volunteers (even plural is questionable here), and when they feel that backporting fixed from GDAL 2 to GDAL 1 is taking time from more important things, you will be stranded with EOL software. So please consider taking the time to contribute to the idenfication of issues in the development version of rgdal built against GDAL 2 and/or 1, available for anonymous SVN checkout at: svn checkout svn://scm.r-forge.r-project.org/svnroot/rgdal/trunk Enjoy! Roger -- Roger Bivand Department of Economics, Norwegian School of Economics, Helleveien 30, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 91 00 e-mail: Roger.Bivand at nhh.no
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