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FFTA Message
Howdy again,
I have been using a variation of the ef_fft_demo script to analyze three
years of rain data ( 1 day time steps and 1 X 1 degree spatial grids).
The problem is the following message occurs when I run the script:
LET FFT_raintim = precip[y=5s:20s,x=150e:170w]
LET FFT_newrainfft = ffta(FFT_raintim[l=1:1096])
LET FFT_rainfft=FFT_newrainfft[x=150:190@ave,y=-5:-20@ave]
SET VARIABLE/TITLE="Amplitude Spectrum" FFT_rainfft
SET VIEW ul
PLOT FFT_rainfft
***************************************
*** NOTE: unknown axis units: CYC/HOURS
***************************************
The time step of my data is in 1 day increments, but the dates are given
in year, month, date and time (eg. 12:00). I suspect this is causing
the error message. My plots still occur, but they look noisier than
expected which may be related to this error message. Is there a way to
eliminate the "unknown axis units" problem without re-writing the entire
cdf file to only read data per day? Thanks in advance.
Scocks
TAMU
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