Syntax

DYNAmics

ANALysis POWEr { <dynamics-power-statement> } END is invoked from the main level of X-PLOR.

<dynamics-power-statement> :==

<trajectory-statement>

defines the input data; see Section 11.1.3.

BACK=<logical>

performs Fourier back-transformation on power spectrum to obtain the vector autocorrelation function (default: FALSE).

CLENgth=<realps>

provides length of correlation function in units of psec; it affects only the output file (default: 10).

COUTput=<filename>

writes the correlation function to the specified file.

PLENgth=<real>

provides the length of the power spectrum in units of psec; it affects only the output file, not the calculation (default: 1000).

POUTput=<filename>

puts the power spectrum into the specified file.

POWER-2=<integer>

is an optional specification of a power of 2 for the FFT (default: 1).

PSKIp=<int>

is the skip value for the printout of the power spectrum. It does not affect the calculation. If pskip is zero, no power spectrum is written (default: 1).

TRIM=<logical>

trims the first (largest) peak from the power spectrum if TRIM is TRUE; if a correlation function is calculated later and the peak was at 0, this is equivalent to shifting the long time limit of the correlation function to 0 () (default: FALSE).

WINDow=( <real> <real> )

sets to zero everything in the power spectrum that is outside the window defined by the two values in units of psec (default: (0,1000)).