OPLOTERR Procedure

The OPLOTERR procedure plots error bars over a previously drawn plot. A plot of X versus Y with error bars drawn from Y - Err to Y + Err is written to the output device over any plot already there.

This routine is written in the IDL language. Its source code can be found in the file oploterr.pro in the lib subdirectory of the IDL distribution.

Syntax

OPLOTERR, [ X ,] Y , Err [, Psym ]

Arguments

X

An optional array of X values. The procedure checks whether or not the third parameter passed is a vector to decide if X was passed. If X is not passed, then INDGEN(Y) is assumed for the X values.

Y

The array of Y values. Y cannot be of type string.

Err

The array of error bar values.

Psym

The plotting symbol to use (default = +7).

Keywords

None

Version History

Original

Introduced