CONTOUR

Purpose:

Displays table data as a contour plot.

Syntax:

CONTOUR(table, levels, incolor, labeling, factor)

table

-

A multi-column series.

levels

-

Optional. An Integer. The number of contour levels to draw. Defaults to 10.

incolor

-

Optional. An integer, the color flag:

0:

Black & White (default)

1:

Color

labeling

-

Optional. 4 or 8 Real numbers representing end points of labeling axes. Each axis is defined by two (x, y) coordinate pairs, either as x1, y1, x2, y2; or x1,y1, x2, y2, x3, y3, x4, y4. If four label points are entered, labels are drawn on an axis from (x1, y1) to (x2, y2). If eight label points are entered, labels are drawn on two axes: one axis from (x1, y1) to (x2, y2), and the second axis from (x3, y3) to (x4, y4). Defaults to no labels.

factor

-

Optional integer specifying the contour label factor. The factor specifies that every nth intersecting contour will be labeled. Defaults to 1.

Example:

W1: spline2(rand(20), 4)

W2: contour(W1, 6, 0, 0.0, 0.0, 20.0, 20.0, 5)

 

image\contourpic.gif

 

shows contents of W1 as a 6 level contour, with labels drawn wherever the contour lines cross an Imaginary line with endpoints of (0.0, 0.0) and (20.0, 20.0) (i.e., a diagonal line). The background of the plot is not filled and every 5th intersecting contour is labeled.

Example:

W3: contour(W1, 6, 1, 0.0, 0.0, 20.0, 20.0, 5)

 

Same as above, except the background of the contour is filled based on the magnitude of the data and the current color map.

 

CONTOUR can be obtained by pressing [F7] or executing SETPLOTTYPE(2).

Remarks:

Up to two axes (eight real numbers specifying a total of four coordinates) can be specified for labeling.

See Also:

DENSITY

MAPPALETTE

SETPALETTE

SETPLOTTYPE

SETSHADING

SHADEWITH

TABLEVIEW

WATERFALL