| 3 | | Many oceanography products are published in HDF format but ArcGIS 9.1 cannot read HDF. Arc 9.2 [http://webhelp.esri.com/arcgisdesktop/9.2/body.cfm?tocVisable=1&ID=2458&TopicName=Supported%20raster%20dataset%20file%20formats is supposed to support HDF] but my experience has not been very good. For example, I have been unable to get it to read [http://podaac-www.jpl.nasa.gov/products/product109.html PO.DAAC QuickSCAT ocean winds] HDFs, and it is extremely slow at reading [http://www.nodc.noaa.gov/sog/pathfinder4km/ NOAA NODC 4 km AVHRR Pathfinder SST] HDFs. It also appears that Arc cannot detect the projection used by HDF files, which is not surprising due to the lack of a widely-adopted standard for HDF metadata. As a result, you must copy the HDF to some other format, shift and rescale the data, and define the projection yourself. |
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| | 3 | Many oceanography products are published in HDF format but ArcGIS 9.1 cannot read HDF. Arc 9.2 [http://webhelp.esri.com/arcgisdesktop/9.2/body.cfm?tocVisable=1&ID=2458&TopicName=Supported%20raster%20dataset%20file%20formats is supposed to support HDF] but my experience has not been very good. For example, I have been unable to get it to read [http://podaac.jpl.nasa.gov/PRODUCTS/p109.html PO.DAAC QuickSCAT ocean winds] HDFs, and it is extremely slow at reading [http://www.nodc.noaa.gov/sog/pathfinder4km/ NOAA NODC 4 km AVHRR Pathfinder SST] HDFs. It also appears that Arc cannot detect the projection used by HDF files, which is not surprising due to the lack of a widely-adopted standard for HDF metadata. As a result, you must copy the HDF to some other format, shift and rescale the data, and define the projection yourself. |
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