[R-sig-Geo] OSX, rgdal, GDAL drivers and HDF4

[Ben Tupper]

Hi,

On Jun 2, 2015, at 1:56 PM, Shaun Walbridge <SWalbridge at esri.com> wrote:

> Have you tried with the homebrew project? HDF4 isn¹t a default supported
> driver, but it¹s easy enough to add:
> 
>  brew install hdf4
>  # prefer hdf4 links over NetCDF
>  brew link --overwrite hdf4
>  brew install gdal --complete --enable-unsupported --with-hdf4
> 
>  # check what drivers are installed, list should include Œhdf4¹:
>  gdal-config --formats
> 
> I¹d use that as a starting point.
> 

Thanks!  I have not used brew before but it seems like it should be easy, or will be as soon as I figure out what this means...

ben at gale ~ $ brew install hdf4
Error: No available formula for hdf4 
Searching formulae...
Searching taps...
homebrew/versions/hdf4


Cheers,
Ben



> Cheers,
> Shaun
> 
> 
> 
> On 6/2/15, 12:11 PM, "Ben Tupper" <btupper at bigelow.org> wrote:
> 
>> Hello,
>> 
>> This is my attempt to look before I leap into installing GDAL on OSX.
>> (You can probably hear my pitiful groaning and knee-knocking in the
>> background.)
>> 
>> I want to read many HDF4 files for which I do not have the GDAL HDF4
>> driver installed.  I used William Kyngesburye's nice framework
>> (http://www.kyngchaos.com/software:frameworks) to install GDAL but it
>> came without the HDF4 driver.
>> 
>> Reading this somewhat dated exchange...
>> 
>> http://r-sig-geo.2731867.n2.nabble.com/Read-HDF-files-td6750856.html
>> 
>> ... I think I understand that if I want the HDF4 driver I must build GDAL
>> on my system manually.  Is my understanding correct, or is there another
>> (easier) way to read HDF4 files directly in R?
>> 
>> Thanks!
>> Ben
>> 
>> 
>>> library(rgdal)
>> Loading required package: sp
>> rgdal: version: 0.9-3, (SVN revision 530)
>> Geospatial Data Abstraction Library extensions to R successfully loaded
>> Loaded GDAL runtime: GDAL 1.11.2, released 2015/02/10
>> Path to GDAL shared files:
>> /Library/Frameworks/R.framework/Versions/3.2/Resources/library/rgdal/gdal
>> Loaded PROJ.4 runtime: Rel. 4.9.1, 04 March 2015, [PJ_VERSION: 491]
>> Path to PROJ.4 shared files:
>> /Library/Frameworks/R.framework/Versions/3.2/Resources/library/rgdal/proj
>> Linking to sp version: 1.1-0
>>> x <- gdalDrivers()
>>> any(x$name %in% c("HDF4", "HDF"))
>> [1] FALSE
>> 
>>> sessionInfo()
>> R version 3.2.0 (2015-04-16)
>> Platform: x86_64-apple-darwin13.4.0 (64-bit)
>> Running under: OS X 10.9.5 (Mavericks)
>> 
>> locale:
>> [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
>> 
>> attached base packages:
>> [1] stats     graphics  grDevices utils     datasets  methods   base
>> 
>> other attached packages:
>> [1] rgdal_0.9-3 sp_1.1-0
>> 
>> loaded via a namespace (and not attached):
>> [1] grid_3.2.0      lattice_0.20-31
>> 
>> 
>> 
>> Ben Tupper
>> Bigelow Laboratory for Ocean Sciences
>> 60 Bigelow Drive, P.O. Box 380
>> East Boothbay, Maine 04544
>> http://www.bigelow.org
>> 
>> _______________________________________________
>> R-sig-Geo mailing list
>> R-sig-Geo at r-project.org
>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>> 
> 

Ben Tupper
Bigelow Laboratory for Ocean Sciences
60 Bigelow Drive, P.O. Box 380
East Boothbay, Maine 04544
http://www.bigelow.org