** Compass plot. **

** COMPASS(Z) draws a graph that displays the angle and magnitude **

** of the complex elements of Z as arrows emanating from the origin. **

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** COMPASS(X,Y) is equivalent to COMPASS(X+i*Y). It displays the **

** compass plot for the angles and magnitudes of the elements of **

** matrices X and Y. **

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** COMPASS(Z,'S') and COMPASS(X,Y,'S') use line style 'S' where **

** 'S' is any legal linetype as described under the PLOT command. **

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** See also ROSE , FEATHER , QUIVER . **

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