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Kenneth Eaton


Hellebore Consulting Group, LLC

Last seen: 4 years ago |  Active since 2008

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I'm a seasoned biomedical researcher and software developer with expert knowledge of computational biology, object-oriented programming, image processing, statistical analysis, and user interface design. I've been programming for over 30 years, having cut my teeth on BASIC and Logo when I was 10.

You can often find me on Stack Overflow answering MATLAB questions: http://stackoverflow.com/users/52738/gnovice

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Answered
How do I skip items in a legend?
Starting in R2021a, you can leave an item out of a legend by setting the corresponding label to an empty character vector. For e...

1 year ago | 108

| accepted

Answered
Error using FreezePanes in Excel
You could try setting the property with a logical value, since it expects a Boolean type: Excel.ActiveWindow.FreezePanes = true...

6 years ago | 0

Answered
I am trying to use the function imfill() but it does not run and the following message is displayed: Undefined function or variable 'eml_assert_all_constant'. I can't find such fuction in MATLAB documentation.
If you use the function <https://www.mathworks.com/help/matlab/ref/which.html |which|> like so: which iptcheckconn -all ...

7 years ago | 4

Answered
Why is subsref and subscripted reference not equivalent
Not sure if this is a complete answer, but it appears that invoking subsref directly requires a stricter definition of the outpu...

8 years ago | 1

Answered
Hump-day challenger - Recursion
My first attempt: function index = find_index(M,V) switch numel(M) case 0 index = []; case 1 ...

14 years ago | 1

| accepted

Answered
How can i remove the sky from this image. (About background removal question)
I'm unclear how <http://www.mathworks.com/help/techdoc/ref/zeros.html ZEROS> is to be used for this problem, but you could do it...

14 years ago | 3

| accepted

Answered
How do I generate a given Matrix in one command?
I can't believe no one suggested dilation: A = imdilate(eye(5),ones(2)); Or convolution: A = sign(conv2(eye(5),ones(2),'s...

14 years ago | 3

Answered
Slice thickness information lost when using dicomwrite()
I think your problem may be the missing capitalization of the "t" in the name |SliceThickness|. Notice that all the fields in th...

14 years ago | 0

| accepted

Answered
What matlab easter eggs do you know?
As <http://blogs.mathworks.com/steve/2006/10/17/the-story-behind-the-matlab-default-image/ Steve discussed in one of his blog po...

14 years ago | 20

Answered
How do I save and restore the state data in a GUI?
<http://www.mathworks.com/matlabcentral/fileexchange/24861-41-complete-gui-examples 41 Complete GUI Examples> from Matt Fig on t...

14 years ago | 1

Answered
Hump-day puzzler.
In response to Andrew's extra challenge for a solution in which |BLANK| returns |true|, here's an absolutely insane one: func...

14 years ago | 3

Answered
Hump-day puzzler.
Here's a pretty goofy answer: true) fprintf('I Love '); end; if (false

14 years ago | 6

Answered
What programming challenges would you pose to new users?
Designing simple GUIs can introduce newer users to a number of important concepts. For example... *Challenge:* Create a stopwa...

14 years ago | 2

Answered
How to make a list of user's reputation ? :)
Here's yet another variation that uses Walter's idea of going through the pages of questions, fetching the question links, then ...

14 years ago | 3

Answered
How to compare two different cell arrays ?
The <http://www.mathworks.com/help/techdoc/ref/setdiff.html SETDIFF> function does what you want. It will give you the values in...

14 years ago | 11

| accepted

Answered
How do I write a good answer for MATLAB Answers?
I'm generally in favor of pointing out when a key edit (i.e. correction) has been made to an answer for the following reasons: ...

14 years ago | 5

Answered
Using find in a 3d matrix in MATLAB.
When finding values in multidimensional (i.e. greater than 2-D) arrays using the function <http://www.mathworks.com/help/techdoc...

14 years ago | 30

| accepted

Answered
Declaring 'many' variables from work space into function workspace
Yet another option is to design your function to accept a <http://www.mathworks.com/help/techdoc/ref/varargin.html variable leng...

14 years ago | 0

Answered
MATLAB xlswrite function
The reason? Because <http://www.mathworks.com/help/techdoc/ref/xlswrite.html#bsnsz_b-13 the documentation> says so! ;) Excerpt:...

14 years ago | 1

Answered
Outputting to string
You can do this using the function <http://www.mathworks.com/help/techdoc/ref/eval.html EVAL>: for i = 1:3 eval(['var_' i...

14 years ago | 2

| accepted

Answered
How to solve symbolic system of equations?
Easy, use the <http://www.mathworks.com/help/toolbox/symbolic/solve.html SOLVE> function: >> S = solve(Eqs) S = a:...

14 years ago | 0

| accepted

Answered
Need help writing a datacursormode Text Update Function to display high, low, close, date, & volume data as a Datatip on a plot made with the highlow function of the Financial Toolbox.
Since you want your data cursor to display data that is not on the plot, you will have to put that data in a place that the Text...

14 years ago | 2

| accepted

Answered
Compute opponent colour of RGB values
If you are talking about a <http://en.wikipedia.org/wiki/Opponent_process color opponent process>, I figured out a simple functi...

14 years ago | 1

Answered
Grayscaled Images to RGB
If |img| is your grayscale image, stored as a 2-D |uint8| array, you can create a red version by making |img| be the red color p...

14 years ago | 3

Answered
Output of delaunay function
As per <http://www.mathworks.com/help/techdoc/ref/delaunay.html the function documentation>, the matrix |tri| returned from DELA...

14 years ago | 2

| accepted

Answered
Working with a three dimensional matrix
If you're asking how you would index |k| in your loop to get a 2-D submatrix, you would do the following: l = k(:,:,i);

14 years ago | 1

Answered
clearing an instance of a structure variable
You can remove an element from a structure array the same way you can remove an element from any other type of array: a(1) = ...

14 years ago | 2

| accepted

Answered
How to generate symbolic variables dynamically at run-time?
You can generate your system of equations from a matrix of zeroes and ones using just the <http://www.mathworks.com/help/toolbox...

14 years ago | 2

| accepted

Answered
Problem saving/loading structure with function handles
In the documentation for <http://www.mathworks.com/help/techdoc/matlab_prog/f2-38133.html#brfp2ff-1 Saving and Loading Function ...

14 years ago | 2

| accepted

Answered
How can I find what parameters are in an inline function.
You can use the ARGNAMES function (which is a method for inline objects) to get the arguments of the inline function as a cell a...

14 years ago | 2

| accepted

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