[ncl-talk] joint-histogram

[Marston Johnston]

Hi Mary & Dennis,

 

The table looks like a good place to start. 

I’m currently unaware of a cloud fraction that is calculated from optical depth and cloud top pressure. 

However, I do have data for all there, i.e., I have ctp, cf, and cot (optical depth).

 

I’ll take a look at the table tomorrow. 

 

Thanks guys ☺

 

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 

Only the fruitful thing is true!

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 

 

From: Mary Haley <haley at ucar.edu>
Date: Monday, 16 October 2017 at 21:31
To: Marston Johnston <shejo284 at gmail.com>
Cc: Dennis Shea <shea at ucar.edu>, "ncl-talk at ucar.edu" <ncl-talk at ucar.edu>
Subject: Re: [ncl-talk] joint-histogram

 

Marston,

 

Take a look at this page:

 

http://www.ncl.ucar.edu/Applications/table.shtml


These are examples showing how to draw filed cells (square or triangle) based on some criteria.  I think table_4.ncl colors the cells by ranges of values.

 

--Mary

 

 

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 

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 

Only the fruitful thing is true!

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 


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