PWR.SetAxis()

Type: INSTANCE FUNCTION

Purpose: Helps to define the real-time display of a PWR object.

Associates an axis with a data column in the object. Controls linear/logarithmic formatting of the display, and allows labeling of the axis.

You must call Pwr.SetAxis for each of the axes in the real-time plot. For a y and y‘ versus x plot, you need three calls to Pwr.SetAxis().

Usage:

Pwr.SetAxis (AxisNo, Source, Scale, MinVal, Label, Units)

AxisNo

  • INDEX
  • Defines which axis is being configured.
  • X_AXIS
  • Y_AXIS
  • Z_AXIS (This is the y-axis on an upper plot

Source

  • INDEX
  • A code identifying the column to be used. See the PwrDataCol() topic for a list of columns.

Scale

  • INDEX
    • Indicates whether the axis is to be linear or logarithmic
    • LIN_AXIS
    • LOG_AXIS

MinVal

  • REAL
  • Minimum values used in prevention of “ugly” plot scaling. MinVal is used differently depending on Scale setting. On a linear axis, this is the minimum resolution of the plot. The range of values shown on the axis cannot be smaller than MinVal. This prevents excessively fine scaling when plotting data where all the values are identical or very similar.
  • On a log axis, this value is substituted for zeroes in the data. This prevents infinite logarithm values.

Label

  • STRING
    • The label used for the axis. Short names (one or two character labels) are preferred.

Units

  • STRING
    • The units used for the axis. Short names are preferred.

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