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# Andy

Active since 2009

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

circa 7 anni ago | 1

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...

oltre 10 anni ago | 0

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...

oltre 10 anni ago | 0

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...

oltre 10 anni ago | 1

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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...

oltre 10 anni ago | 0

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

oltre 10 anni ago | 0

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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...

oltre 10 anni ago | 0

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})...

oltre 10 anni ago | 2

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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...

oltre 10 anni ago | 1

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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 ...

oltre 10 anni ago | 4

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 ...

oltre 10 anni ago | 1

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

oltre 10 anni ago | 0

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

oltre 10 anni ago | 0

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...

oltre 10 anni ago | 2

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...

oltre 10 anni ago | 0

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...

oltre 10 anni ago | 0

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

oltre 10 anni ago | 0

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...

oltre 10 anni ago | 0

Inner function parameters by value or by reference?

oltre 10 anni ago | 0

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>

oltre 10 anni ago | 6

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

oltre 10 anni ago | 1

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Do: * Check the <http://matlab.wikia.com/wiki/FAQ FAQ>. * Google search. * Make use of lookfor, doc, and help commands. * ...

oltre 10 anni ago | 10

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 ...

oltre 10 anni ago | 0

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>...

oltre 10 anni ago | 0

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...

oltre 10 anni ago | 0

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

oltre 10 anni ago | 2

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

oltre 10 anni ago | 0

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...

oltre 10 anni ago | 1