OSX, rgdal, GDAL drivers and HDF4
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