graph_tfsa

PURPOSE ^

TFSA PLOTTING FACILITIES

DESCRIPTION ^

 TFSA PLOTTING FACILITIES

 Plotting routines used to visualise data. The following types of
 graphs can be employed:

  (i)   Plot
  (ii)  Image
  (iii) Pseudo-Colour
  (iv)  Waterfall (1 and 2)
  (v)   Mesh
  (vi)  Surf
  (vii) Contour
  (viii)TFSAPL

 All plots except (i) can be used to plot time-frequency
 distributions. The time domain and frequency spectra one
 dimensional plots can be added to the figure along the two axes.
 The plots can be configured by specifying various options in the
 figure. The 'Expand' button can be used to reveal more options. On
 the actual plot figure the appearance of the plots can be altered
 from a popup menu which is activated by right clicking.
  
 EXPLANATION OF VARIOUS PLOTTING ROUTINES

  (i) Plot
      
      Used for one dimensional plots of signals, IF estimation,
      wavelet coefficients, frequency spectra etc.

  (ii) Image

      Used to plot two dimensional matrices such as time-frequency
      distributions and scalograms. Displays the matrix as an image.

  (iii) Pseudo-Colour

      Pseudo-colour plots a colour grid for each element of the input
      matrix. Also used to plot two dimensional matrices such as
      time-frequency distributions and scalograms.

  (iv) Waterfall 1 and 2

      Again also used to plot two dimensional matrices such as
      time-frequency distributions and scalograms. This uses a
      waterfall style plot of the matrix, using different viewing
      angles which distinguish Waterfall 1 and Waterfall 2.

  (v) Mesh
   
      Same as the waterfall plots except that column lines are
      drawn to produce a 'mesh' surface.

  (vi) Surf

      Equivalent to the mesh plot except that a 'surface' is now
      defined over the mesh.

  (vii) Contour

      Contour plot of the two dimensional matrix where the
      different coloured lines represent varying degrees of magnitudes.

  (viii) TFSAL

      TFSA graphing function specifically optimised for viewing
      time-frequency distributions.




  See Also:  tfsapl

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