# REVERSE

## Purpose:

Reverses the values of a series.

## Syntax:

REVERSE(series, offset)

series |
- |
A series or table. |

offset |
- |
Optional. A real, the X offset of the resulting
series. |

## Returns:

A series or table.

## Example:

reverse({1, 2, 3})

returns a series {3,
2, 1}. The XOFFSET of the
series is –2.0.

## Example:

The reverse of a 10-point line with equation
y = 2x + 1,

reverse(gline(10,0.1,2,1))

creates a 10-point series (line) with
equation y = -2x
+ 1.

## Example:

reverse(gline(10,0.1,2,1), 0.0)

Same as above except the offset of the
resulting series is set to 0.0. Thus, the equation of the line becomes
y = -2x + 2.8.

## Example:

conv(W2,rev(W2))/2*length(W2)

creates a new series, in the current Window,
which is the auto-correlation of the series in Window 2. This formula
will show the periodicity of the series.

## Remarks:

If not specified, the XOFFSET
of the result is **-(length(series)
- 1) * deltax(series)**.

REVERSE can be abbreviated REV.

## See Also:

AUTOCOR

CONCAT

EXTRACT

FLIPLR

FLIPUD