plsvect: Set arrow style for vector plots

plsvect ( arrowx ,
  arrowy ,
  npts ,
  fill );
 

Set the style for the arrow used by plvect to plot vectors.

arrowx, arrowy (PLFLT_VECTOR, input)

A pair of vectors containing the x and y points which make up the arrow. The arrow is plotted by joining these points to form a polygon. The scaling assumes that the x and y points in the arrow lie in the range -0.5 <= x,y <= 0.5. If both arrowx and arrowy are NULL then the arrow style will be reset to its default.

npts (PLINT, input)

Number of points in the vectors arrowx and arrowy .

fill (PLBOOL, input)

If fill is true then the arrow is closed, if fill is false then the arrow is open.

Redacted form: plsvect(arrowx, arrowy, fill)

This function is used in example 22.