![]() nsweep - the number of sweeps stored in the array.The dimensions of the variable adc_data are: This attribute can have the values 'H' (all pulses have horizontal polarization), 'V' (all pulses have vertical polarization) or 'A' (alternating). This array has three or four dimensions, depending on the number of transmit polarizations used, as indicated by the global attribute TX_polarization. The actual IPIX radar data is stored in the variable adc_data. Loading the data into the MATLAB workspace To load the variables listed by ipixinfo.m into the MATLAB workspace, use the following MexCDF syntax:Ĥ. The bug only appears in a few scanning mode data files. Note that ipixinfo.m calls ipixazm.m to correct a bug in the azimuth_angle variable. NetCDF_creation_routine = make_Dartmouth_ncdf Instrument_name = IPIX X-band Polarimetric Coherent Radar Range = metresĪzimuth_angle = degreesĮlevation_angle = degreesĪdc_data = ADC output Unambig_velocity = 7.9872 metres per second To get an overview of all IPIX variables stored in the cdf-file that nc points to, use: Extract IPIX variables from a data fileĭownload the m-files ipixinfo.m and ipixazm.m. If you want to use a browser to locate a. To put a pointer to the file '19931118_023604_stareC0000.cdf' into the variable nc, use: This command prints all the variables, dimensions and global attributes that are in a netCDF file, and also lists the commands used to produce that output.Ģ. It is also very useful to study the netcdf utility ncdump.m. If you are interested anyway, type help netcdf. ![]() You do not need to understand the structure of netCDF files to work with the IPIX radar data. This tutorial describes the four step procedure to start working with the data in MATLAB.ĭownload the MexCDF toolbox, install it on your system and make sure it is in your MATLAB path. The data are easily imported into MATLAB using the freely available MexCDF toolbox. This format is ideal for efficient storage of multidimensional array data. ![]() ![]() The IPIX radar files are stored in Unidata's NetCDF file format (not to be confused How to process the IPIX radar files in MATLAB ![]()
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