Help Creating an Antenna Pattern from Multiple Files

Hello, I would like some suggestions on how to create a 3-D plot from mulitple data files. In my setup I measure a receive antenna using an HP 8510. The transmitter is stationary but the receive antenna is able to be positioned at different angles. For each angle we sweep the receive antenna in the azimuth axis. So for each azimuth sweep I generate a data file, and each new sweep I roll the antenna in the phi direction. I would like some suggestions on how I would write an application where the user could select the multiple data files and then plot the data in a 3-D plot generating an antenna pattern or some call a volumetric plot.
Thanks,
joe

Hi Joe,
Attached are three vi's to get started with. AzElAntennaPattern generates a dipole antenna pattern (r = sin(theta)) in radius, elevation (theta), azimuth (phi) coordinates. It transforms the coordinates to Cartesian and puts every azimuth sweep into a new row in an array. This creates 3x 2D arrays, one for X, Y and Z, each row an azimuth sweep. These can then be plotted in a 3D parametric graph. Technically the parametric graph accepts spherical coordinates, but it won't draw axes or grids in spherical as far as I can tell. I'm sure it uses the normal spherical coordinates anyway, so best to transform to Cartesian yourself. DipoleWrite, generates azimuth sweep files and puts them into a folder you choose. Choose the folder by pressing the small folder icon before running it. AzElAntennaPatternFromFolder, shows how to read these files back in and plot them. If you post one of your files, I can help with a file reader.
Good luck!
Attachments:
AzElAntennaPattern.vi ‏167 KB
DipoleWrite.vi ‏15 KB
AzElAntennaPatternFromFolder.vi ‏180 KB

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