pl_setcontlabelformat: Set format of numerical label for contours

`pl_setcontlabelformat`: Set format of numerical label for contours
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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.

Redacted form: `pl_setcontlabelformat(lexp, sigdig)`

This function is used example 9.

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Chapter 17. The Common API for PLplot | Home | `pl_setcontlabelparam`: Set parameters of contour labelling other than format of numerical label