
  dataview help
 
  dataview Menus and Buttons:

  File MENU:
   % Read Data File
       display file browser to select data file to read
   % Accept Data
       working data set copied to main data set
   % Restore Data
       main data set copied to working data set
   % Write column format
       writes current working data set to a file in 
       column-oriented (space-separated value) format
   % Write comma-separated-value (csv) format
       writes current working data set to a file in
       comma-separated value format
   % Write piece-wise-linear (pwl) format
       writes current working data set to a file in piecewise-linear format
   % Re-order data
       specify columns for re-ordering data set
   % TextWindow
       open a TextWindow to view the working data set
   % Close Window
       close dataview window, do not exit decida
   % Exit Decida
       exit decida

  Analysis MENU:
   % Statistics
       print time,signal statistics
   % Frequency/Duty-cycle
       open new dataview window with duty-cycle, frequency, period
       versus time.
   % Edges: Rise/Fall/Slew
       open new dataview window with edge statistics of current
       signal.
   % FFT
       Fourier transform.
   % IFFT
       Inverse Fourier transform.
   % Jitter
       clock jitter calculation and dataview window with jitter vs time, etc.
   % Time-Constant
       calculate time-constant from exponential curve.
   % Eye-diagram
       generate eye-diagram plot.
   % Oscilloscope
       generate oscilloscope plot.
   % Low-Pass Filter
       filter the current signal with a (single-pole) low-pass
       filter.
   % Moving Average Filter
       filter the current signal with a moving-average filter.
   % Linear Regression
       generate a linear regression line of the current signal.
   % Quadradic Regression
       generate a quadradic regression line of the current signal.
   % Fourier Expansion
       calculate a Fourier expansion up to specified order and
       generate the fitting curve.
   % Histogram
       plot a histogram of the current x-column.
   % generate WAV file
       generate a sound file in WAV format using the current signal.
            
  Operations MENU:
   % Equation-Set
       specify equation for old or new data column
   % Analog to Digital
       bus value column from of bus bit columns
   % Add Delineator
       delineator toggles value when other column changes value
   % -x
       negate x-column
   % -y
       negate y-column
   % abs(x)
       absolute value of x-column
   % abs(y)
       absolute value of y-column
   % 1/y
       inverse of y-column
   % delta(x)
       difference between adjacent x-column values
   % dy/dx
       differentiate y-column with respect to x-column
   % integ(y dx)
       integrate y-column with respect to x-column
 
  X: Y:
   % select current x-column, XCOL and current y-column, YCOL

  RED BUTTONS:
   % Start
       plots YCOL_vs_XCOL curve
   % Overlay
       plots YCOL_vs_XCOL curve on current plot, overlayed
   % Stack
       plots YCOL_vs_XCOL curve on current plot, stacked above last curve
   % Next
       starts new notebook page and plots YCOL_vs_XCOL curve
   % Delete
       deletes current notebook page

  Calc Button:
   % tk calculator

  Help Button:
   % opens help table of contents
