Polar Plot Tool
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Polar Plot

Reference: Documentation

Found in these Apps
Features
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Make Beautiful Polar Plots: Load up to 16 polar datasets (up to 8 on iPhone) and easily adjust plot parameters, including the number of axial and radial lines as well as the data scale. Save a high-resolution image of the graph to a PDF file.
Specifications
  • Data Import
    • Data File Format: CSV, TXT, see specific format specifications, below
    • Load and plot up to 16 polar datasets at one time (limited to 8 on iPhone)
  • Graph
    • Orientation: Up = 0º, Right = 0º
    • Direction: Clockwise, Counter-clockwise
    • Angle Labels: 0 - 360º, -180º - +180º, Front/Back/Left/Right, North/South/East/West
    • Circular Grid Divisions: 10
    • Grid Line Angles (º): 15, 30, 45, 90
    • Autoscale: Off, Auto
    • Show Levels in dB: Enable/Disable
    • Level Scale
      • 1e-9, 2e-9, 3e-9, 4e-9, 5e-9, 6e-9, 8e-9, 10e-9, 20e-9, 30e-9, 40e-9, 50e-9, 60e-9, 80e-9, 100e-9, 200e-9, 300e-9, 400e-9, 500e-9, 600e-9, 800e-9, 1e-6, 2e-6, 3e-6, 4e-6, 5e-6, 6e-6, 8e-6, 10e-6, 20e-6, 30e-6, 40e-6, 50e-6, 60e-6, 80e-6, 100e-6, 200e-6, 300e-6, 400e-6, 500e-6, 600e-6, 800e-6, 1e-3, 2e-3, 3e-3, 4e-3, 5e-3, 6e-3, 8e-3,10e-3, 20e-3, 30e-3, 40e-3, 50e-3, 60e-3, 80e-3,100e-3, 200e-3, 300e-3, 400e-3, 500e-3, 600e-3, 800e-3, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 8.0, 10.0, 20.0, 30.0, 40.0, 50.0, 60.0, 80.0, 100.0, 200.0, 300.0, 400.0, 500.0, 600.0, 800.0, 1e3, 2e3, 3e3, 4e3, 5e3, 6e3, 8e3, 10e3, 20e3, 30e3, 40e3, 50e3, 60e3, 80e3, 100e3, 200e3, 300e3, 400e3, 500e3, 600e3, 800e3
    • dB Level Scale (dB/Div)
      • 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.08, 0.09, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.8, 0.9, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 8.0, 9.0, 10.0, 12.0, 15.0, 16.0, 18.0, 20.0, 24.0, 25.0, 27.0, 30.0
  • Cursor
    • Draw Cursor Circle: Enable/Disable
    • Cursor Data: The cursor can be associated with values from any loaded polar dataset.
  • Data Export
    • Image: PDF
  • Data Import
    • Data should be in a tab or comma delimited text file (.txt or .csv).
    • File data should be in columns, with the first column containing angles and subsequent columns containing polar data (or radius information), such as level, magnitude, etc, for the corresponding angle.
    • Any lines at the top of the file starting with *, #, or ; will be ignored as comment lines.
    • If any angle value exceeds 90 or is less than -90, the angular units will be assumed to be degrees. Otherwise, the angular units will be assumed to be radians. Degrees can be manually chosen using the 'Angular Units:' keyword, described below.
    • Several keys will be recognized for setting specific properties for the polar data. These keys, and their corresponding values, must be set in the file above the polar data, after any comment lines. The number of values following the key (each separated by the chosen delimiter) must match the number of polar data columns, so that the keyword + value columns is equal to the angle + polar data columns.
      • Channel Label:
        • Text value, names the corresponding column of polar data.
      • Units:
        • Text value, identifies the units of the polar data. If the units value begins with dB, then the polar data will be treated as decibel values. Otherwise, it will not.
      • Angular Units:
        • Text value, must be º or deg to set the angular units to degrees. Otherwise, the angular units will be set to radians, unless at least one value exceeds +/- 90 degrees.
      • dB Multiplier:
        • Numerical value, identifies multiplier that should be used to convert between decibel and non-decibel values of the polar data. This value will typically be 20, but may also be 10.
      • dB Reference:
        • Numerical value, identifies the reference that should be used to convert between decibel and non-decibel values of the polar data. This value will typically be 1.0, but may be other values, such as 2e-5 or 0.00002 in the case of sound levels.
  • Specifications Subject to Change
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