[ncl-talk] Hodogragh plots

[Amadou Coulibaly]

Dear NCL Users

I want to change a daily hodogragh script to a monthly hodogragh or seasonal
hodogragh, but I have a problem how to do it. The script works for daily
hodogragh like following:
timeindex = ind(times(:,0).eq.2010 .and. times(:,1) .eq. 2 .and. times(:,2)
.eq. 12)  ; 12Z data for February 2010

But when I used following timeindex:
timeindex = ind(times(:,0).eq.2010 .and. times(:,1) .eq. 3)  ; find indices
for March 2010 only

it will show me the following errors messages:

fatal:Dimension sizes of left hand side and right hand side of assignment
do not match

fatal:["Execute.c":7743]:Execute: Error occurred at or near line 5660 in
file $NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl

fatal:["Execute.c":7743]:Execute: Error occurred at or near line 163 in
file test1.ncl

fatal:["Execute.c":7743]:Execute: Error occurred at or near line 238 in
file test1.ncl

The problem is that how to change the daily labels into the monthly labels
from:

    labels              = "  " + ispan(0,23,1)  ; labels for 24 hours
(daily labels)
    nStride             = 1
    txid =
gsn_add_text(wks,plot,labels(::nStride),u(::nStride),v(::nStride),txres)
    labels(23)             = " "
;Don't do the last one.

I tried to use a loop over a month (March for instance) like:

do month=0,30,1

    labels(month)       = "  " + ispan(0,23,1)
    nStride             = 1
    txid =
gsn_add_text(wks,plot,labels(::nStride),u(::nStride),v(::nStride),txres)
    labels(23)             = " "
end do

It didn't work. I need your help.

Best regards

-- 
* COULIBALY   AMADOU   *
PhD  Student  on  West  African  Climate  System (WACS)
FUTA - Federal  University  of  Technology of Akure, Nigeria

*Visiting Student - *
*University of Cologne, Germany**Institute of Geophysics and Meteorology*
Pohligstr. 3 / Office 3.102
D-50969 Köln

*Project*: WASCAL (West African Science Service Centre on Climate Change
and Adapted Land Use)
Phone:(+234) 810 795 2836 /(+223) 65 67 27 57 /(+226) 64 57 37 27 /+49
15218352574

E-mail: mpapin24 at gmail.com / coulibalya68 at yahoo.com

"*The time is always right to do right": Nelson Mandela*

*"Character is like a tree and reputation like a shadow.  The shadow is
what we think of it; the tree is the real thing" : Abraham Lincoln*

*"Do what you can, with what you have, where you are" Theodore Roosevelt*
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