Re: gsn_csm_lat_time

> When I try to plot lat_time diagram, getting an error like this
>
> ncl 88> plot = gsn_csm_lat_time(wks,MSE_p,cnres)
> warning:IrTransInitialize: trXCoordPoints contains invalid coordinate array:
> defaulting trXAxisType to LinearAxis
>
> Time coordinate in data is YYYYMMDDHH format, but change to linear after
> plotting and gives wrong tick mark intervals. Does it means need to convert
> time coordinate to linear values before using gsn_csm_lat_time.
>
> Thanks
> Siji
>
> ncl 90> printVarSummary(MSE_p)
>
>
> Variable: MSE_p
> Type: float
> Total Size: 56832 bytes
> 14208 values
> Number of Dimensions: 2
> Dimensions and sizes: [latitude | 48] x [time | 296]
> Coordinates:
> latitude: [0.06712330132722855..24.63578033447266]
> time: [1994050100..1994092512]
> yyyymmddhh
>---------------------------------------------------------------

I speculate that you will need to change the time coordinate
for plotting purposes via "yyyymmddhh_to_yyyyfrac"
http://www.ncl.ucar.edu/Document/Functions/Contributed/yyyymmddhh_to_yyyyfrac.shtml

    time_new = yyyymmddhh_to_yyyyfrac(MSE_p&time, 0)
    MSE_p&time = time_new
    printVarSummary( MSE_p )
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Received on Thu Nov 16 2006 - 08:09:09 MST