| SHIFT Function [message #79436] |
Mon, 27 February 2012 23:05 |
zolile mtumela
Messages: 50
Registered: September 2011
|
Member |
|
|
Hi all
I am experiencing some problems to my program, I real need some
advice and help,
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
;condition
For j=Ny/2, Ny-1 do filterdata(j) = 0
filterdata = 2*filterdata
spec = shift(filterdata, -freqc)
plot,freq,abs(spec)
On calculating Freqc , I supposed to get around 17 but on the program
its print infinite , i want to shift by -17 based to definition of
Freqc.
example of data
x
y z
2006-10-06 20:00:10.000 279 9.36 -14.99 15.25 99999.00
2006-10-06 20:00:30.000 279 9.84 -14.70 15.00 99999.00
2006-10-06 20:00:50.000 279 10.74 -14.69 14.75 99999.00
2006-10-06 20:01:10.000 279 11.43 -14.54 14.25 99999.00
2006-10-06 20:01:30.000 279 11.63 -13.78 15.00 99999.00
2006-10-06 20:01:50.000 279 12.04 -13.15 15.75 99999.00
2006-10-06 20:02:10.000 279 13.08 -12.93 16.50 99999.00
2006-10-06 20:02:30.000 279 14.25 -12.49 17.25 99999.00
2006-10-06 20:02:50.000 279 13.76 -11.88 17.50 99999.00
2006-10-06 20:03:10.000 279 12.99 -11.68 18.50 99999.00
But I was using y-component at the moment.
This looks easy but I am very struggling to finger out it, please
help.
Thanks in advance for your time.
Zolile
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
