Re: Manually adding points/values in NCL script

 No. I would like to be able to create the script in a file, but manually add points using latitude and longitude, line by line.

I can run NCL on the file later to generate the pictures I need.

-William

It seems to me you are asking for a "scanf" [C/C++], or?

a fortran "read" type functionality, where you can "manually" input?

data at the keyboard.?
?

If so, NCL does not have such functionality. There might be a work?

around but I don't know of any.?

-----Original Message-----
From: Dennis Shea <shea_at_ucar.edu>
To: valkhorn_at_aol.com
Cc: ncl-talk_at_ucar.edu
Sent: Tue, 15 Apr 2008 5:55 pm
Subject: Re: Manually adding points/values in NCL script

It seems to me you are asking for a "scanf" [C/C++], or?

a fortran "read" type functionality, where you can "manually" input?

data at the keyboard.?
?

If so, NCL does not have such functionality. There might be a work?

around but I don't know of any.?
?

valkhorn_at_aol.com wrote:?

> Let me see if I can find a graphic example of what I want:?

>?

> http://www.ncl.ucar.edu/Applications/Scripts/native_3.ncl?

>?

> I have data for hundreds of stations for highs, lows, precip,
> snowfall, etc. I want to generate a map that looks like that (although
> not rotated slightly to the right) that gives me high, low, precip,
> etc. maps for each day that I have data.?

>?

> I want a map to look like that, but I want to ability to manually add
> points line by line and not by using an external ASCII file.?

>?

> In the example above how would I change it to manually add the points
> one by one by one, line by line instead of an array, using latitude
> and longitude??

>?

> Also does it get just the data from the .grb file or does it get the
> map info from there too??

>?

> Does that clarify it a bit??

>?

> -William?

>?

>?

>?

> -----Original Message-----?

> From: Mary Haley <haley_at_ucar.edu>?

> To: valkhorn_at_aol.com?

> Cc: ncl-talk_at_ucar.edu?

> Sent: Tue, 15 Apr 2008 5:16 pm?

> Subject: Re: Manually adding points/values in NCL script?

>?

> Hi,
>
> Sorry for the lack of response. I'm still trying to figure out what
> you want. You said you want to write a script that generates an NCL
> script into a file that you run later. This is a bit confusing
> because it sounds like you are talking about three executable scripts
> here.
>
> I guess the way I would do this is write a big script, like a C-shell
> or Python script that is capable of reading and/or processing the SQL
> databases into a format that NCL can handle, like a simple ASCII file,
> or maybe even a NetCDF file.
>
> You can then have this script either generate an NCL script on the
> fly, or else have an NCL script already written that takes command
> line arguments to intialize things, like what the name of your data
> files are, how many points you have, etc. For information on
> command line options, see:
>
> http://www.ncl.ucar.edu/Document/Manuals/Ref_Manual/NclCLO.shtml
>
> These can really come in handy when you need to write
> a generic NCL script, and pass it values from another script.
>
> This NCL script can be set up to write the graphical output to a PS or
> PDF file that will be saved.
>
> I think the hardest part will be figuring out how to get the data from
> the SQL database into something NCL can read. I don't have experience
> with this, but perhaps somebody else can jump in here.
>
> --Mary
>
>
> On Tue, 15 Apr 2008 valkhorn_at_aol.com <mailto:valkhorn_at_aol.com> wrote:
>
> > I posted this a few days ago but still haven't gotten a response. I
> have a very large SQL database of weather data and I was hoping to
> produce contoured weather maps with this data.
> >
> > Of course NCL doesn't interface with SQL, so what I wanted to do is
> write a script that automatically generates the NCL script into a file
> that I can run later but which adds all of the points I need and
> generates the image.
> >
> > In general, this is what I hope to do just to clarify what I'm asking:
> >
> > ncl script generation script:
> > -----------------------------
> > Write the script to a .ncl which does the following {
> > ??? Initialize graph
> > ??? Pull all data from SQL tables and add each point manually in a loop
> > ??? Plot points
> > ??? Save graph
> > }
> >
> > Then batch run the script generator for the days I need.
> >
> > In pseudocode, what I'm looking for is something like
> >
> > AddPoint(latitude, longitude, value);
> > AddPoint(latitude, longitude, value);
> >
> > Can anyone help me out? Thanks!
> >
> > -William
> >
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-- 
======================================================?
Dennis J. Shea                  tel: 303-497-1361    |?
P.O. Box 3000                   fax: 303-497-1333    |?
Climate Analysis Section                             |?
Climate & Global Dynamics Div.                       |?
National Center for Atmospheric Research             |?
Boulder, CO  80307                                   |?
USA                        email: shea 'at' ucar.edu |?
======================================================?
?
 

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Received on Tue Apr 15 2008 - 17:02:54 MDT