HDF Mapping? [was: netCDF to color GEOTIFF]
nbarker at RSINC.COM
Fri Dec 2 12:34:21 EST 2005
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]On
Behalf Of Sage Lichtenwalner
Sent: Friday, December 02, 2005 4:52 PM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: [UMN_MAPSERVER-USERS] HDF Mapping? [was: netCDF to color
Andrea et al.,
This is an intriguing solution, and it raises the question: if you can plot raster data using netCDF
data files then can you also use HDF files in the same way? Provided, of course, that GDAL is
compiled with HDF support.
I was hoping to try this out myself, but I spent all yesterday trying to compile HDF4 on Mac OS X
to no avail. So my other question is, has anyone had any luck compiling HDF4?
Like many of you, I suspect, my ultimate goal is to be able to plot SST (and eventually Chl-a, etc.)
using MapServer, but I can't figure out the best way to approach the problem. Any guidance
anyone might have would be greatly appreciated.
Thanks a bunch,
well gdalinfo --formats shows
HDF5 (ro): Hierarchical Data Format Release 5
HDF5Image (ro): HDF5 Dataset
so it is possible, but in the same way as the reading netCDF from disk it will not allow HDF as an output format. If you just want a portrayal (PNG, JPEG etc) then this isn't a problem.
To me (and I guess to others on the list), it depends on what you want to do with your data. Do you just want to portray your data, so as to give a quick look, if so then a WMS is fine.
If you want to serve temporal collections of HDF data then you perhaps might want to look at the MapServer Web Coverage Service, there are a growing number of analysis clients available for this. In particular NWGISS (http://nwgiss.laits.gmu.edu/) has been doing this for a long time. I would recommend you try MapServer first though, it is open source, and very easy to set up to serve temporal collections.
Please mail if you need any help.
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