[ncl-talk] NCL script running slow for ploting Timeseries

[Dave Allured - NOAA Affiliate]

LSL,

NCL has a weakness when handling huge numbers of strings.  I am not sure
this is the problem.  If it is, then do not do this inside a loop:

    strs_wrf = asciiread(fwrf,-1,"string")

Instead use any one of these approaches:

* Read each time series directly as float, not string.
* Convert time series files in advance to external numeric format, such as
Netcdf.
* Run the plot script in a shell loop, and plot only one site in each
iteration.

Also try delete (plot) after gsn_panel and before "end do".  This is easy,
maybe try this first.

--Dave


On Fri, Mar 8, 2019 at 1:18 AM LSL <lslrsgis at whu.edu.cn> wrote:

> Hi, everyone
>
>
> I am using a NCL script to plot timeseries for daily precipitation in one
> year. However, the script is running very slow after generating around
> 10-15 figures.
>
>
> Any indications? Thanks in advance.
>
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