The PLplot Plotting Library: Programmer's Reference Manual
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plprec: Set precision in numeric labels

plprec (set, prec);

Sets the number of places after the decimal point in numeric labels.

set (PLINT, input)

If set is equal to 0 then PLplot automatically determines the number of places to use after the decimal point in numeric labels (like those used to label axes). If set is 1 then prec sets the number of places.

prec (PLINT, input)

The number of characters to draw after the decimal point in numeric labels.

Redacted form: plprec(set, prec)

This function is used in example 29.

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