Re: PDF calculation for a grid node

From: Mary Haley <haley_at_nyahnyahspammersnyahnyah>
Date: Tue Jul 16 2013 - 13:01:28 MDT


I think to get mary2_mods.ncl to work you simply need to change the directory path.

The script you gave me didn't work, because you had a directory path that doesn't exist on my machine. So, I changed:

  DataDir = "/data3/koletsis/Current/A2/"


  DataDir = "./"

I think if you change it back it should work.

If you need further help with pdfx, hopefully Dennis Shea can respond. He should be back tomorrow.


On Jul 16, 2013, at 6:36 AM, Ioannis Koletsis wrote:

> Dear Mary and ncl-users,
> The point is to calculate the pdf for each grid point, in order to estimate
> the wind power potential for an area....
> When I run the script for one grid point (attached script1.ncl) the pdf
> calculation (as well as windpop calculation) was successfully done....
> The pdf calculation is depends on the bins number as well as on the maximum
> value of the wind speed distribution...
> For this reason, the bins number isn't constant for each grid point and may
> be varied because of the different wind speed distribution...
> It should be marked also, that the pdfx function seems to be 1-d...
> I have already done the following steps, without success:
> 1. Changing the ws variable dimensions (line 72 of script1.ncl), from one
> grid point to the desired grid node (line 71 of script1.ncl), the
> calculation has been completed and returned only one value instead of
> nlat*nlon values....
> 2. The script mary2_mods.ncl, which has been modified by Mary using reshape
> statement, didn't work and an error message has been appeared
> " warning:Argument 0 of the current function or procedure was coerced to the
> appropriate type and thus will not change if the function or procedure
> modifies its value
> fatal:(-2147483647) has no file extension, can't determine type of file to
> open
> fatal:No valid instance of variable time found in file list
> fatal:Execute: Error occurred at or near line 26 in file mary2_mods.ncl"
> 3. I believed that at the first script a do loop might be the solution, but
> it didn't work.....
> 4. The creation of a new variable wspdf with 4 dimensions including nbins
> number as the 4th dimension, it didn't work as the number of the bins isn't
> constant for each grid point....
> The source files are available at
> for free download.
> If anyone has any idea, please share it with me....
> Any help would be appreciated....
> -----Original Message-----
> From: Mary Haley []
> Sent: Tuesday, July 16, 2013 1:01 AM
> To: Ioannis Koletsis
> Subject: Re: PDF calculation for a grid node
> Ioannis,
> I don't fully understand your script, but I got the reshape part to work.
> The reshape function is nothing more than this:
> function reshape(x,dims)
> begin
> return(onedtond(ndtooned(x),dims))
> end
> I'm not sure exactly what you are trying to bin, but see the attached script
> and see if this is what you want.
> Please, if you have further questions on this, post them back to ncl-talk,
> as I'm not always available.
> Thanks,
> --Mary
> -----
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Received on Tue Jul 16 13:01:56 2013

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