Hi ferreters,
I have found very convenient to use the function TAX_DATESTRING
to get the date
as a string and then test with STRINDEX the presence of a specific
month
to select specific month in a time serie.
I am sure you can perform this selection by playing with indices
but I didn't want
any assumption on the starting month (l=1 in not always january).
In addition, this is very short to write without any additionnal
variable declaration.
So just to keep a trace. Let me know if this can be achieve with
another simpler way.
Happy ferreting.
Regards
Patrick
!=====================================
use monthly_navy_winds
let var=UWND[i=@ave,j=@ave]
let var_MAR = if STRINDEX(TAX_DATESTRING(t[gt=var], var[i=1,j=1],
"month"), "MAR") then var
let var_SEP = if STRINDEX(TAX_DATESTRING(t[gt=var], var[i=1,j=1],
"month"), "SEP") then var
! I have specified var[i=1,j=1] to limit memory usage
ppl color 6, 70,70,70
plot/grat=(dash,color=6) var
plot/over/symbol=22/color=blue/title="March" var_MAR
plot/over/symbol=22/color=red/title="September" var_SEP
-- Data Analysis and Visualization Engineer LSCE/IPSL, CEA-CNRS-UVSQ laboratory LSCE - Climate and Environment Sciences Laboratory IPSL - Institut Pierre Simon Laplace --