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Andy


38 total contributions since 2009

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Answered
Control structures
This is an answer that you could easily have gotten yourself by looking at the Getting Started section of the documentation

4 years ago | 1

Answered
Is there a way to run a function every time Matlab returns to its command prompt
If you can get the handle to the command window (I'm sure Yair has done similar things at some point; take a look around <www.un...

8 years ago | 0

Answered
Factorization
For any prime p and positive integer n, the factors of p^n are all of the form p^k for 0 <= k <= n. So the factors of 2^1024 ar...

8 years ago | 0

Answered
TUTORIAL: How to format your question
Is this tutorial supposed to be just about how to format code, or is it how to use formatting in general? If the latter, then t...

8 years ago | 1

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Answered
How does Matlab build-in Quasi-Newton method calculate the gradient?
I don't have a direct answer for you, but you can dig into it a little bit further by typing edit fminunc at the command...

8 years ago | 0

Answered
Simple calculations?
Perhaps you're looking for res = diff(n1)./diff(n2); %?

8 years ago | 0

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Answered
data sharing Between two GUIs
Take a look at Matt Fig's <http://www.mathworks.com/matlabcentral/fileexchange/24861-41-complete-gui-examples>, specifically GUI...

8 years ago | 0

Answered
replacing blank values in a single column cell array with the previous value
Pending the answer to Sean de's comment, I will assume the first entry is not blank: for ix=2:length(A) if isempty(A{ix})...

8 years ago | 2

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Answered
Msgbox ico change
It is the third argument, and is described here: doc msgbox EDIT: Ok, I still don't totally understand what you're asking fo...

8 years ago | 1

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Answered
cell array or multidimensional array?
Obviously it depends: is all of your data numeric, or are the data types mixed? If the data is all numeric, then I'd say stick ...

8 years ago | 2

Answered
creating a unique variable for the outputs of a for loop?
Your final multiplication is matrix multiplication, right? In what order should it be done? Assuming it should be done in the ...

8 years ago | 1

Answered
Matlab to MPG
Are you sure mpgwrite was a MATLAB function, and not <http://www.mathworks.com/matlabcentral/fileexchange/309 this FEX submissio...

8 years ago | 0

Answered
GUI Text box
Well, I suppose you could do something like eval(['x(n)=' get(...)]); Or you could use evalin: doc evalin But ev...

8 years ago | 0

Answered
Why do you come to "MATLAB Answers"?
When Answers was first instituted, I didn't really see the need for it in addition to CSSM. But it does seem to have a bit high...

8 years ago | 2

Answered
Getting external variables from GUI
Another way is to save your data to a .mat file and load it in your GUI at runtime. Create a 'Load' button in your GUI, with ca...

8 years ago | 0

Answered
Creating a matrix that looks similar to a 10x10 timestable grid from x = [1:10] and y = [1:10]
>> x=1:10; >> y=1:10; >> x'*y ans = 1 2 3 4 5 6 7 8 9 10 2...

8 years ago | 0

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Answered
What frustrates you about MATLAB?
"It is cross platform, making code easy to share (assuming the other people have forked out for the not-so-cheap license)." Thi...

8 years ago | 0

Answered
Using unique.m function on NaNs
If you have some application for which you need to ignore NaNs rather than take them into account, you could replace them with s...

8 years ago | 0

Answered
Inner function parameters by value or by reference?
<http://www.mathworks.com/matlabcentral/answers/152-can-matlab-pass-by-reference> <http://matlab.wikia.com/wiki/FAQ#Can_MATLAB_...

8 years ago | 0

Answered
Wrong values with greater than, equal and less than or equal functions
<http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F>

8 years ago | 6

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Answered
Excel reading - xlsread
Use the third output of xlsread: [data, txt, raw] = xlsread(...); The "raw" output is a cell array which contains all of...

8 years ago | 1

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Answered
TUTORIAL: how to ask a question (on Answers) and get a fast answer
Do: * Check the <http://matlab.wikia.com/wiki/FAQ FAQ>. * Google search. * Make use of lookfor, doc, and help commands. * ...

8 years ago | 9

Answered
Adding a GUI to existing code
When you say you were "given some code" and you want to "put a GUI into already existing code", do you mean you have a function ...

8 years ago | 0

Answered
How to set timer
You might want to take a look at Matt Fig's <http://www.mathworks.com/matlabcentral/fileexchange/24861-41-complete-gui-examples>...

8 years ago | 0

Answered
Finding the maximum value without using built-in functions
Before the loop, create a variable called currMax, and set it equal to 0. Within the loop, with each grade that's entered, comp...

8 years ago | 0

Answered
GUI Creation
From <http://www.mathworks.com/help/techdoc/ref/uicontrol_props.html>: Editable text – The Value property does not apply. If Ma...

8 years ago | 2

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Answered
copy graphic to Excel
You could use Yair Altman's screencapture utility from the FEX: <http://www.mathworks.com/matlabcentral/fileexchange/24323-scree...

8 years ago | 0

Answered
Problem finding max value of column of an Matrix
The problem you're having is that you recalculate the max of each column on each iteration of the loop. You could move that cal...

8 years ago | 1

Answered
How to create a matrix out of single inputs in a loop?
If your grades are entered as strings, you should store them in a cell array: numStudents = 20; % or however many B = cell(...

8 years ago | 1

Answered
How to convert string into filename then use load comment to load the file
Have you tried: load [target_file '.mat'] If so, what didn't work the way you wanted? EDIT: It turns out the use of bracket...

8 years ago | 1

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