What is the latest re: reading HDF files with R?
I have never done this, so may be missing something obvious, but can you not use rgdal ? GDAL lists HDF4 as a supported format. Cheers, Scott
On 10-Jan-07, at 14:49, Rick Reeves wrote:
Greetings: This week I am working with HDF format files containing ocean color imagery (CZCS, SeaWIFS) secured from NASA GSFC, and would like to bring the image maps into the R environment. One way I have done this is to use the SeaDAS software to extract a 2-dim binary floating point matrix (from the HDF file) and write it to disk, then use R pixmap() to read it in to a vector. This works, but one loses all of the image attributes contained in the HDF header. Now, it would be good to read the HDF file directly into R, capturing the header attributes. I have tried the R HDF5 library routine hdf5load(), which seems to read the new .hdf5 format but NOT the older .hdf format (I tried, unsuccessfully) Question is: Has anyone developed a technique to read HDF files with R? Thanks in advance, Rick R -- Rick Reeves Scientific Programmer / Analyst National Center for Ecological Analysis and Synthesis UC Santa Barbara reeves at nceas.ucsb.edu www.nceas.ucsb.edu 805 892 2533 <reeves.vcf>
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