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Re: SHIFT Function [message #79431 is a reply to message #79428]

Tue, 28 February 2012 10:00

Yngvar Larsen
Messages: 134
Registered: January 2010

Senior Member

On Feb 28, 8:05 am, zolile mtumela <zolilemtum...@gmail.com> wrote:
> I got centre frequency(freq_centre=2.35e-3),
> From the data, period (T=20), number of elements( Ny=360), data for
> 2hours.
> freq_centre = 2.35e-3
> Freqc=(freq_centre/(1/(Ny*T)))
> print,freqc
[...]
> On calculating Freqc , I supposed to get around 17 but on the program
> its print infinite ,

My guess is that you are doing integer division in the denominator.

IDL> T = 20
IDL> Ny = 360
IDL> print, 1/(Ny*T)
0
IDL> freq_centre = 2.35e-3
IDL> print, freq_centre/(1/(Ny*T))
Inf
% Program caused arithmetic error: Floating divide by 0
IDL> print, freq_centre/(1./(Ny*T))
16.9200

--
Yngvar

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[Message index]

		Re: SHIFT Function By: zolile mtumela on Tue, 28 February 2012 10:20
		Re: SHIFT Function By: Yngvar Larsen on Tue, 28 February 2012 10:00

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