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wrap.pro

topwrap

Utilities

result = wrap(value, range)

This function wraps one or more values into the range [0, range). If the values are positive, this function is identical to the mod operator. Any negative values compute to (value mod range) + range.

Return value

Multiples of range are added to value to bring it in the range [0, range)

Parameters

value in required

One or more values

range in required

A positive scalar which sets the top of the wrapped coordinate system.

Examples

  Wrap 420 degrees into the range 0 - 360 degrees:
  IDL> result = wrap(720, 360)
  IDL> print, result
        60
  IDL> print, wrap(-1, 360)
       359

File attributes

Modifcation date:	Mon Mar 22 16:17:13 2010
Lines:	52

Chris Beaumont's IDL Library