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Last modified: December 2006

URL: http://cxc.harvard.edu/ciao3.4/levels.html
Hardcopy (PDF): A4 | Letter
AHELP for CIAO 3.4 levels Context: chips

Synopsis

Sets the contour levels in a contour plot.

Syntax

chips> [D #] [C #] LEVELS <lev1> <lev2> ... <levN>

Description

Argument: D #
Description: drawing area number designation
Options: integer numbers
Default: current drawing area

See the D command for more information about this argument.

Argument: C #
Description: curve number designation
Options: integer number
Default: current curve

See the C command for more information about this argument.

Argument: <lev1> <lev2> ... <levN>
Description: numbers specifying Z axis values of each contour level
Options: real numbers 

The <lev1> value specifies the Z-axis data value of the first contour line, <lev2> specifies the value of the second contour line, and so on. See the CONTOUR command for information on displaying contour plots.

CIAO allows some plot attributes to be changed using the ChIPS state object and resource file. See "ahelp chips" for further details.

Example

chips> CONTOUR data/example3D.sorted.dat 2 4 20
chips> LEVELS 3 5 20 100

The ASCII data file data/example3D.sorted.dat is plotted as a contour plot. The first contour line is drawn along Z-axis data values of 2, the second along values of 4, and the third along values of 20. The LEVELS command changes the contour levels to 3, 5, 20, and 100 for contour lines 1 thru 4, respectively.

Bugs

See the bugs page for ChIPS on the CIAO website for an up-to-date listing of known bugs.

Hardcopy (PDF): A4 | Letter
Last modified: December 2006



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