Re: probability scale on NCLB

This is just a heads up that two new functions, "erf" and "erfc" have
been added to NCL and will be available in the next release. We are
hoping for a release in September.

Please see:

   http://www.ncl.ucar.edu/Document/Functions/Built-in/erf.shtml
   http://www.ncl.ucar.edu/Document/Functions/Built-in/erfc.shtml

for more information.

--Mary

On Sun, 25 Jun 2006, Dennis Shea wrote:

>> A short question. Can NCL do a probability scale? I have a cumulative
>> distribution function (CDF) of something which I expect it to be a normal
>> distribution. Is there anyway I can plot the function on a probability
>> scale and make the graph looks linear? I am searching for "error function"
>> and its inverse on the ncl website, but it seems like ncl doesn't have it.
>> _______________________________________________
>
> The error function codes are contained in the underlying code.
> The following accesses these functions.
>
> We will try to make the erf* functions available
> as built-in functions.
>
> ----
>
> %> WRAPIT erf_sub_ncl.f
>
> This creates a shared object ===> erf_sub_ncl.so
>
> Then run the test code:
>
> %> ncl tst_erf_so.ncl
>
>
> good luck
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Received on Thu Aug 03 2006 - 09:34:22 MDT