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Matt Tearle

MathWorks

Last seen: 5 giorni ago Active since 2010

I love MATLAB. I love teaching people to love MATLAB.

I love it so much that I went to work for the people who make MATLAB. I spend my days at MathWorks creating material to help people learn MATLAB. Life is good.

(My love of teaching MATLAB notwithstanding, please don't email me for help -- post a question to MATLAB Answers instead. Firstly, your email will probably be swallowed by my spam filter. Secondly, private consulting isn't in my job description.)

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Answered
How do I display my secant method iteration values in a table?
If you want to display things nicely, you can use fprintf to format things into text. If the primary concern is getting the valu...

15 giorni ago | 0

| accepted

Answered
Matalb Academy - Reinforcement Learning Onramp: submission failed
There was a change in R2021a that caused an incompatibility. We have a fix ready that will go out with the next update to the tr...

7 mesi ago | 3

Answered
Assign a number to a letter in excel
I don't understand what you're trying to get out of the original data. If you do diff(X2) you'll get [1 -1 0 0 0...

oltre un anno ago | 0

Answered
Referencing the name "MATLAB"
The official rules for all that stuff reside in the style guide.

circa 2 anni ago | 4

| accepted

Answered
Kullback-Leibler Divergence for NMF in Matlab
If X and X_hat are just matrices, then I think you should be able to compute all the terms element-wise and sum the result (unle...

oltre 2 anni ago | 0

| accepted

Answered
Extract multiple data points from matrix
It might help to know a bit more about what you're actually trying to do. Given that you're indexing with (:,k), it seems that t...

circa 3 anni ago | 0

Answered
How to find average score of different combination
Can you explain what you mean by "same" and "different" in this context, and how you're getting the output you want, because it'...

circa 4 anni ago | 0

Answered
Is MATLAB providing free online tutorial?
The link Image Analyst gave has all the online trainings that are available. Currently Onramp is the only one that's free*. W...

circa 4 anni ago | 1

Answered
How can I assign custom colors to stacked bar plot
The colors of the bars are taken from the default colormap, so the easiest solution is to change the figure's colormap. Put the ...

circa 5 anni ago | 3

Question


MATLAB poems -- let's hear 'em!
Inspired by Chad Greene's " <http://www.mathworks.com/matlabcentral/answers/217444-matlab-jokes-or-puns MATLAB jokes or puns> " ...

circa 5 anni ago | 2 answers | 3

2

answers

Answered
Matlab jokes or puns
Not a joke or pun, but in the spirit of MATLAB fun: There was an old math guy called Cleve who, while teaching, a pipe-d...

circa 5 anni ago | 3

Answered
I need a guideline to learn MATLAB faster
You can now get started in MATLAB by taking the *free* <https://matlabacademy.mathworks.com/ MATLAB Onramp>. It teaches you the ...

oltre 5 anni ago | 0

Answered
learn matlab for beginner
Given that you have a MathWorks.com account, the easiest way to get started with MATLAB is already freely available to you: <htt...

oltre 5 anni ago | 0

Answered
How to learn MATLAB
In addition to the online learning options Andreas mentioned, you can also get started in MATLAB by taking the *free* <https://m...

oltre 5 anni ago | 16

Answered
code to plot epicycle
Looks like a pretty standard homework problem. You have a bunch of scalar constants given, so just define those: >> T1 = 1;...

circa 6 anni ago | 1

Answered
Using for loops to generate an array?
TastyPastry's answer is perfectly correct, but it's worth asking an important clarification: *why* do you want to do it with a |...

circa 6 anni ago | 0

Answered
MATLAB Programming Techniques (online course)
I haven't *taken* the course, but I did help *write* it, so... :) As much as I hate to talk anyone out of taking our training...

oltre 6 anni ago | 6

| accepted

Answered
plotyy x axis does not match
Try getting rid of the ticks on one x-axis (the one that hasn't been dateticked): set(ax(2),'XTick',[]) You may also wan...

circa 7 anni ago | 0

Answered
Shooting method for ODE interpolation error
Set a breakpoint on line 36 and run the code. When it stops at that line, see what you get from unique(fvegpont) I'm gue...

circa 7 anni ago | 0

| accepted

Answered
How can I import a specific matrix from an excel file using the xlsread command?
You need to use standard Excel indexing "topleft:bottomright": heightdata = xlsread('Height Data.xlsx','B3:KP5');

circa 7 anni ago | 1

| accepted

Answered
Using a time-stamp to find the median for every hour
If you could show a snippet of one of the data files I might be able to give some more specific guidance, but I'd suggest: * ...

circa 7 anni ago | 0

Answered
Two basic questions in matlab
1. It won't let you. Two options: (a) pad with something, such as NaNs, (b) use cell arrays to store each matrix in a separate c...

circa 7 anni ago | 1

Answered
Newton Raphson on Mathlab
Torsten showed how to find the roots of a polynomial. More generally, to find the zeros of any function: f = @(x) 0.5*x.^3 ...

circa 7 anni ago | 0

Answered
Probability of being under a target
Counting the number of samples with a given criterion is easy enough: threshhold = pi; nnz(X < threshhold) The |ecdf|...

circa 7 anni ago | 0

| accepted

Answered
Conditionally Flip Sign in Table
One liner: A(strcmp(A(:,1),'No'),2) = strcat('-',A(strcmp(A(:,1),'No'),2)) Slightly cleaner with two lines: idx = s...

circa 7 anni ago | 0

| accepted

Answered
connecting points in scatter3 plot?
OK, now I understand the problem. The issue isn't that the data is representing 3-dimensional *points*, but that it's stored in ...

circa 7 anni ago | 0

| accepted

Answered
Overwrite empty cell array with strings
If |rowofstrings| is a 1-by-41 cell array then your first line will work if you change the |{}| to |()|: MasterCellArray(2,...

circa 7 anni ago | 0

| accepted

Answered
connecting points in scatter3 plot?
What about |plot3|? plot3(rand(5,1),rand(5,1),rand(5,1),'o-') But I also don't understand what the problem is with |line...

circa 7 anni ago | 1

Answered
Hi. How can i rectify my error i.e., not enough arguments
How are you calling this function? It has to be called with two inputs: foo = erlang_b(pi,42) The error you're getting ...

circa 7 anni ago | 0

Answered
How can I stop an ODE overwriting variable values?
If I understand correctly, your ODE function takes in |t| and |y| (and possibly some other parameters), then calculates |Hatta| ...

circa 7 anni ago | 0

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