Aug 13, 2017  It has been historically fairly hard to install GDAL along with all its C dependencies and make it play nicely with existing Python libraries leaving alone having multiple environments with multiple versions. I have blogged a year ago on how to set up a nice open-source GIS sandbox using Anaconda. Nowadays, it got even easier. Installing GDAL on Mac OSX. GDAL Complete: you must install both gdal.pkg and numpy.pkg. Once you have all 4 packages installed.

This program is composed of the above fragments. The latest GDAL is version 1. In particular, we can use the gdalinfo program, that takes a filename and will output a copious description of the data, including metadata, but also geogrpahic projection, size, number of bands, etc. Your best bet is to install PyTables and Pandas and use the inbuilt HDFStore object to read in the data, which might look something like:. Having some idea what information is in the hdf file then, we can proceed to read the data in inside Python using the GDAL library: Now we have to translate the LAI values into meaningful quantities. Sign up using Email and Password.

Thus, my total workflow was:.

Remember that the mask in a masked array should be False for good data, so we can directly use qa as defined above. There are clearly trade-offs: Here’s the link to the file that I’m working with.

gdal – Read HDF4 data using python – Geographic Information Systems Stack Exchange

Unfortunately, even after linking the overwrite, I get a warning: In the above example, the LUT tag’s value maps the values between and to which is a fill value [ 1 ]. If compiler throws an error due to long long type in Boost library during libkml hddf4, use. ReadAsArray array [[ 0. You can typically find the projection you want on spatialreference. If an attribute is not of string type, values are converted into a string. Can you point to an example file?

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GetMetadataintroduced in Section 3. HDFStore path print store Printing the store gives you a list of the series and frames stored gdaal the dataset: If there’s no listing of subdatasets and otherwise no primary dataset as it seems hereyou gdf4 get anything with this build of GDAL. A string specifying an object “HDF5: But I cannot read the data inside the files.

bash – Struggling to compile gdal with hdf4 support – Stack Overflow

Your data hdal stored as tables rather than gridded raster data which could be interpreted by GDAL. This section explains how to call some important functions.

We can apply other shell GDAL tools, e.

Some SD values are clearly given as 0. Does gdalinfo not list any subdatasets?

Email Required, but never shown. We can used masked arrays for this. In the previous code snippet we have done a number of different things: As explained in the previous sectionGDALOpen can open a specific object if the first argument indicates one dataset.

HDF4 — Hierarchical Data Format Release 4 (HDF4)

So, I linked hdf4 using brew link -overwrite-hdf4and a warning comes back that it’s already been linked. Given you’re on a Windows box it’s easy to download and install the h4toh5 tools from the HDF group which can be used from the command line with hsf4 your example file:.

We can check this against e. For example, we can change Int16 to Byte as follows:. Stack Overflow works best with JavaScript enabled. Please note that the value for Driver is different from Figure 8.

Unfortunately, hdf4 is not by default supported by gdal. DOY ‘ plt. They are described as bit combinations: This program is composed of the above fragments.