Re: Concatting data from "degenerate" files...

["'Jeff Polton'" <swp98jap@xxxxxxxxxxxxxxxxx>]

I'm having the same problems creating a time sequence as Gary Strand had,
except that the solutions don't seem to work for me:

I want to concat an number of variables (defined on more than one axis,
though 1 dimensional) onto a single time sequence.

A proposed solution was "timestamping", as follows: 
	! GOAL: combine variable "V" from 12 separate files into a monthly time
series

	! initialize the files
	USE file1.cdf, file2.cdf, file3.cdf, ..., file12.cdf

	! define the time axis
	DEFINE AXIS/T=15-JAN:15-DEC/npoints=12 tmonth           ! note 1

	! define the "zero" value
	LET zero = T[gt=tmonth] * 0                             ! note 2

	! define the time-stamped variable
	LET v_stamped = v + zero

	! save all 12 months in a time series
	REPEAT/L=1:12 (SET DATA `L`; SAVE/APPEND/FILE=T_series.cdf v_stamped)


However, LET v_stamped = v + zero
	only works with v and zero swapped:
LET v_stamped = zero + v, else the grid isn't right.

And, the REPEAT command just writes the same value to the whole time
series, then rewrites 12 times as it iterates with time - instead of 12
different values, one at each "month". 

Are these propblems peculiar to me; I'm using version 4.91? Can anyone
help?
	Jeff

________________________________________________________________________
  Dept of Meteorology,Reading University,Earley Gate,Reading. RG6 6BB
  Office tel: (0118) 9875123 4338  http://www.met.rdg.ac.uk/~swp98jap
------------------------------------------------------------------------

On Wed, 26 Apr 2000, Gary Strand wrote:

> 
> As Lynn suggested, I used the 2nd method described at:
> 
> http://ferret.wrc.noaa.gov/Ferret/Mail_Archives/fu_97/msg00126.html
> 
> and it works great!
> 
> Thanks for the pointer, Lynn, and the solution, Steve.
> 
> --
> Gary Strand               Climate Change Research Section, NCAR (303) 497-1336
> strandwg@ucar.edu                         http://www.cgd.ucar.edu/ccr/strandwg
>