Re: Scatter Plotting

[Stephen H. Dawson]

OK, I apologize to all for my:
-incorrectly calling a variable by the variable name and;
-referencing column numbers by defined range instead of worksheet column
number.

(/sigh)


This syntax works nicely returning the expected results:

clf;
dataSet = odsread ('./CubeGraphing.ods', 'Data', 'C2:E5');
x = dataSet(:,1)
y = dataSet(:,2)
z = dataSet(:,3)
scatter3(x, y, z, 20,"r","filled");




A few housekeeping questions, please:

-How does one run the odsread function from the command line to read the
data array?

-How can I add labels to these axes?

-How can I add labels to these values? I have the labels in the
worksheet now, in column B, if that is an option.

-How can I set the axis scale from -10 to +10?>

-Where are the instructions for color options? I read somewhere one can
feed red/blue/green colors?


Great day, first graph. HOORAY!!!



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


On 06/10/2016 12:06 PM, Stephen H. Dawson wrote:
> Hi,
>
>
> Working on this effort to use worksheet data to feed into a
> three-dimensional cube graph.
>
> I have an ODS worksheet with data formatted as numeric in three columns
> with an x, y, and z header. I have read through the odsread function.
>
> http://wiki.octave.org/IO_package#ODS_support
>
> I understand I am loading the data into a memory variable called A.
>
> I have looked at working examples of  three-dimensional cube graph.
>
> I am unclear how to feed memory variable A to the syntax.
>
>
> WORKING DIRECTORY:
>>> ls -la *.ods
> -rw-r--r-- 1 stephen stephen 10612 Jun 10 11:54 CubeGraphing.ods
> -rw-r--r-- 1 stephen stephen 27218 Feb 18 11:30 Quadrant Graphing.ods
>
> FUNCTIONAL SYNTAX:
> clf;
> x = rand (20,1);  y = rand (20,1);  z = rand (20,1);
> scatter3 (x(:), y(:), z(:), 20*z(:), z(:), 's');
> title ({'scatter3() plot', ...
>          'marker is square, size and color determined by Z'});
>
>
>
> DEVELOPMENTAL SYNTAX:
> clf;
> A = odsread ('./CubeGraphing.ods', 'Data', 'C2:E5');
> [x, y, z] = peaks (20);
> scatter3 (x(:), y(:), z(:), [], z(:));
>
>
> How do I call memory variable A into the data array and list?
>
> Am I correct I list with the scatter3 function?
>
> Thank You,
> Stephen H. Dawson
> (865) 804-3454
> http://www.linkedin.com/in/shdcs
>
>
> On 06/06/2016 04:10 PM, Stephen H. Dawson wrote:
>>>> pkg list
>> Package Name  | Version | Installation directory
>> --------------+---------+-----------------------
>>           io *|   2.0.2 | /usr/share/octave/packages/io-2.0.2
>> Fantastic. Thanks, all.
>>
>> Thank You,
>> Stephen H. Dawson
>> (865) 804-3454
>> http://www.linkedin.com/in/shdcs
>>
>>
>> On 06/06/2016 01:55 PM, Doug Stewart wrote:
>>> On Mon, Jun 6, 2016 at 1:32 PM, Stephen H. Dawson
>>> <address@hidden <mailto:address@hidden>> wrote:
>>>
>>>     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?
>>>
>>>
>>> when you do
>>> pkg list
>>>
>>> you should see a list of all the pkgs that have been installed'
>>> If the is a * next to the pkg name then it is also loaded.
>>>
>>> to load a pkg type
>>>
>>> pkg load "pkgname"
>>>
>>> pkgname is the name in the list
>>>
>>>
>>>
>>>
>>>  
>>>
>>>
>>>     Thank You,
>>>     Stephen H. Dawson
>>>     (865) 804-3454 <tel:%28865%29%20804-3454>
>>>     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>
>>>     > <mailto: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?
>>>     >     >
>>>     >
>>>     >
>>>     >     _______________________________________________
>>>     >     Help-octave mailing list
>>>     >     address@hidden <mailto:address@hidden>
>>>     <mailto:address@hidden <mailto:address@hidden>>
>>>     >     https://lists.gnu.org/mailman/listinfo/help-octave
>>>     >
>>>     >
>>>     > 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
>>>     >
>>>
>>>
>>>     _______________________________________________
>>>     Help-octave mailing list
>>>     address@hidden <mailto:address@hidden>
>>>     https://lists.gnu.org/mailman/listinfo/help-octave
>>>
>>>
>>>
>>>
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