tol.contour | R Documentation |

Draw contours based on a *p*-value matrix.

```
tol.contour(pim, test = c("upper", "lower", "two-sided"), ...)
```

`pim` |
A pixel |

`test` |
An optional character string giving the type of manipulation to
be applied to the |

`...` |
Additional arguments to be passed to |

Note that no checks on the numeric content of `pim`

are made. The
function assumes the pixel `im`

age of *p*-values
in `pim`

is supplied with respect to an upper-tailed test for elevated
risk (this is exactly the way the *p*-value surface is returned when
`tolerance`

is used). This is important if one makes subsequent
use of `test`

, which manipulates the *p*-values to draw at desired
significance `levels`

.

Opens a new graphics device and displays a `contour`

plot if `add = FALSE`

, otherwise adds the contours to the plot in the
existing active graphics device.

T. M. Davies

```
# See ?tolerance
```

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