Re: NCL and OPeNDAP

Brandon,

Which variables are you trying to plot a vector plot of?

I was able to plot "u" and "v", but I had to cheat because they weren't on the same grid.

You will need to do this before you can plot u and v, since they are on staggered grids.

The way I cheated was to just select a subset of u and v, such that they are the same size.
I also had to subscript lat_u and lon_u the same way. Note that this won't create a correct
plot, but I just wanted to verify that there were some values.

See the attached script.

--Mary

On Jul 3, 2012, at 12:53 AM, Brandon Capasso wrote:

> Greetings,
>
> I am trying to read and plot fields from a remote NetCDF file, but I am coming up with "blank" fields.
>
> When I use:
>
> cdf_file = addfile(path,"r")
>
> where path points to http://opendap.co-ops.nos.noaa.gov/thredds/dodsC/NOAA/CBOFS/MODELS/201207/nos.cbofs.fields.nowcast.20120703.t00z.nc, my script runs without error and apparently reads the file, but plots blank vector fields (as if there is no data). Furthermore, printVarSummary on the remote file returns the correct dimension/attribute info for the variables that I'm interested in (so I know ncl is reading the remote file).
>
> When operating on the same file downloaded/saved on my local machine, my script works perfectly and plots the vector fields without issue, so why am I getting blank fields when operating on the remote file?
>
> Regards,
>
> Brandon Capasso
>
>
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