>  Docs Center  >  Libraries  >  Daithi  >  UNWRAP

UNWRAP

UNWRAP

Name


UNWRAP

Purpose


This function unwraps angular time series such that is it continuous.

Category


Time series analysis

Calling Sequence


Result = UNWRAP( X )

Inputs


X: A vector of type floating point containing angular information

Keyword Parameters


-

Outputs


Result: The unwrapped version of X.

Uses


CONSTANTS.pro

Procedure


This function iteratively unwraps the angular values.

Example


Create an incremental vector of angles.
a = 2. * !pi * findgen( 1000 ) / 100.
Convert this to Cartesian coordinates, then back to polar coordinates.
        ang = atan( sin( a ), cos( a ) )
Unwrap the values in ANG.
b = unwrap( ang )
B should be identical to A, while ANG will have discontinuities and be
restricted to the +/-pi interval.

References


-
 

Modification History


Written by: Daithi A. Stone (stoned@atm.ox.ac.uk), 2004-10-25



© 2019 Harris Geospatial Solutions, Inc. |  Legal
My Account    |    Store    |    Contact Us