Re: Scatter Plotting

[Stephen H. Dawson]

Thank you, Isak. This spreadsheet interface greatly helps me.

I have now installed octave-io from distro repository. I am running
octave via:

octave --force-gui

How does one load octave-io, please?



Thank You,
Stephen H. Dawson
(865) 804-3454
http://www.linkedin.com/in/shdcs


On 06/05/2016 08:40 PM, Isak Delberth Davids wrote:
> On 6 June 2016 at 00:31, Stephen H. Dawson <address@hidden
> <mailto:address@hidden>> wrote:
>
>       x = [x1, x2, x3, ...];
>       y = [y1, y2, y3, ...];
>       z = [z1, z2, z3, ...];
>
>
>     Yes, I think I see how to do this now. I will work in it over the next
>     week and see where I end up.
>
>     I appreciate your kind assistance.
>
>     Thank You,
>     Stephen H. Dawson
>     (865) 804-3454
>     http://www.linkedin.com/in/shdcs
>
>
>     On 06/05/2016 06:25 PM, Mike Miller wrote:
>     > On Sun, Jun 05, 2016 at 18:13:38 -0400, Stephen H. Dawson wrote:
>     >> Catchy, nice functionally.
>     >>
>     >> Well, perhaps I am not asking my question properly. If I have 3
>     columns
>     >> in a spreadsheet of x, y, and z values, how do I enter those 3
>     values
>     >> for each location into the scatter3 function?
>     >   x = [x1, x2, x3, ...];
>     >   y = [y1, y2, y3, ...];
>     >   z = [z1, z2, z3, ...];
>     >   scatter3 (x, y, z);
>     >
>     > The demos generate random x, y, and z, but I think they pretty
>     clearly
>     > show how the coordinate vectors are passed to the function, as
>     well as
>     > how to pass additional arguments to set the size or color of
>     each of the
>     > points.
>     >
>     > It's the same as line plotting, the function takes in individual
>     arrays
>     > for each independent dimension of the plot. Corresponding values in
>     > those arrays are the points of the line, histogram, scatter plot, or
>     > surface that is being plotted.
>     >
>     > Is that what you are asking about?
>     >
>
>
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>
>
> Hi,
>
> and since you mentioned "columns in a spreadsheet", this is how you
> can read and use data from a spreadsheet.
>
> % reading spreadsheat
> dataSet = xlsread('dataFile.xlsx')
>
> % extract individual columns one through three
> x = dataSet(:,1)
> y = dataSet(:,2)
> z = dataSet(:,3)
>
> % plotting with data read from spreadsheet
> scatter3(x, y, z);
>
> I think this requires that you have the octave-io package installed
> and loaded.
>
> Cheers,
> Isak Delberth DAVIDS
>