[ncl-talk] joint-histogram

[Dennis Shea]

IMHO: the 'top' label (Cloud Fraction) was derived via

      Cloud_Fraction = f(Optical_Depth, Cloud_Top_Pressure)

To me, it looks like that plot was generated via IDL or NCL.

On Mon, Oct 16, 2017 at 1:03 PM, Marston Johnston <shejo284 at gmail.com>
wrote:

> Hi Dennis,
>
>
>
> At first glance it would appear so, but example 6 calculates the
> percentage. In the ucar example:
>
> https://climatedataguide.ucar.edu/climate-data/isccp-
> international-satellite-cloud-climatology-project
>
>
>
> The ISCCP cloud fraction is calculated for each bin instead of density of
> the frequency of occurrence. So in example 6 there are 2 datasets that are
> used as input data, but in the figure in question seems to use 3.
>
>
>
> /M
>
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Marston S. Ward, PhD
>
> Department of Earth Sciences
>
> University of Gothenburg, Sweden
>
> Email: marston.johnston at gu.se
>
> SkypeID: marston.johnston
>
> Phone: +46-31-7864901 <+46%2031%20786%2049%2001>
>
> Only the fruitful thing is true!
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
>
>
>
> *From: *ncl-talk <ncl-talk-bounces at ucar.edu> on behalf of Dennis Shea <
> shea at ucar.edu>
> *Date: *Monday, 16 October 2017 at 20:53
> *To: *Marston Ward <marston.johnston at gu.se>
> *Cc: *"ncl-talk at ucar.edu" <ncl-talk at ucar.edu>
> *Subject: *Re: [ncl-talk] joint-histogram
>
>
>
> I am not a graphics person.
>
> Looks like example 6
> https://www.ncl.ucar.edu/Applications/pdf.shtml
>
> ===
>
> Really, a contour plot with raster mode.
>
>
>
> On Mon, Oct 16, 2017 at 12:46 PM, Marston Ward <marston.johnston at gu.se>
> wrote:
>
> Hi guys!
>
>
>
> I’m trying to develop a NCL script to produce the attached figure, which
> is a joint-histogram, but a bit different from what pdfxy produces.
>
> I have a good idea of how this image is produced; but why reinvent the
> wheel? I don’t think that NCL has such a plot function, or am I mistaken?
>
> Does anyone have such a script – and would like to share?
>
> This is something I can definitely think of contributing to the NCL.
>
>
>
> Best,
>
> /M
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Marston S. Ward, PhD
>
> Department of Earth Sciences
>
> University of Gothenburg, Sweden
>
> Email: marston.johnston at gu.se
>
> SkypeID: marston.johnston
>
> Phone: +46-31-7864901 <+46%2031%20786%2049%2001>
>
> Only the fruitful thing is true!
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
>
>
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