The PLplot Plotting Library: Programmer's Reference Manual
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plpoin: Plots a character at the specified points

plpoin (n, x, y, code);

Marks out a set of n points at positions (x(i), y(i)), using the symbol defined by code. If code is between 32 and 127, the symbol is simply the printable ASCII character in the default font.

n (PLINT, input)

Number of points to be marked.

x (PLFLT *, input)

Pointer to array with set of x coordinate values for the points.

y (PLFLT *, input)

Pointer to array with set of y coordinate values for the points.

code (PLINT, input)

Code number for the symbol to be plotted.

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plpat: Set area fill patternUpplpoin3: Draw a series of points in 3 space