The PLplot Plotting Library: Programmer's Reference Manual
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pl_setcontlabelformat: Set format of numerical label for contours

pl_setcontlabelformat (lexp, sigdig);

Set format of numerical label for contours.

lexp (PLINT, input)

If the contour numerical label is greater than 10^(lexp) or less than 10^(-lexp), then the exponential format is used. Default value of lexp is 4.

sigdig (PLINT, input)

Number of significant digits. Default value is 2.

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