CONTOUR
Plot contours in the selected variable on a two-dimensional plot.
SYNOPSIS
- contour
- [ line.type = n ] [ value = n ] [ symb = n ]
[ print ] [ label ]
DESCRIPTION
The contour statement draws a contour in the selected variable (see the select statement) at the value specified. value must be specified in the range of the computed variable. For instance, if plotting log boron, value should be in the range 10 to 20 and not 1.E10 to 1.E20. This statement assumes a plot.2d has been specified and the screen has been set up for plotting a two dimensional picture. If this has not been done, the routine will probably produce garbage on the screen.
- line.type
- This allows the line type to be specified for this contour. The default is 1. Different line types have different meanings to different graphics devices.
- value
- This floating parameter expresses the value that the contour line should be plotted at. If boron had been selected, a value of 1.E16 would produce a line of constant boron concentration of 1.E16 cm-3.
- symb
- This integer parameter indicates that the contour line should be drawn with symbols on the contour line. The integer value indicates different symbols.
- print
- This boolean parameter instructs the contour command to print the line segments coordinates rather than plot them. This is useful for exporting data to other programs and plot software.
- label
- The command will attempt to place a text string on the contour in an ideal location to label the value.
EXAMPLES
- contour val=1e10
This command will draw a line at a isoconcentration of 1.E10.
BUGS
This should probably check to make sure a plot.2d has been done. It is conceivable that this statement could produce floating point exceptions when a plot.2d has not been done. This is, to put it mildly, annoying. Plot software bugs will show up in this command.
SEE ALSO
The plot.2d
and for commands.