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Add two numbers
Given a and b, return the sum a+b in c.

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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

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Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

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Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

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Question

locate particles in squares (combinatorics)
I have a problem: I have a lot of particles with given coordinates (x,y). My (x,y) plane is divided into a bunch of squares 32x...

mer än 10 år ago | 1 answer | 0

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Answered
How do I store user input values from a for loop?
Create a vector to store your data,say,a: a=zeros(x,1) in for loop save values on each step: for R=1:x a(R)=input('W...

mer än 10 år ago | 0

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Extract multiple data series from *.fig
1) get id of your axes: a=get(gcf,'Children') 2) get data you needed: y=(get(a(1),'Children'),'YData') If there is ...

mer än 10 år ago | 0

Answered
Double integral of a simple function
integral2 http://www.mathworks.com/help/matlab/ref/integral2.html

mer än 10 år ago | 0

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Help: Display a different layout when pushing a button in a GUI?
Didn't see your code. In your push button callback function write: set("edit box id",'String','tab2'), where "edit box id" is yo...

mer än 10 år ago | 0

Question

Debug mode in code with blocks(cells)
Hi, I often use blocks (cells?) (%%) in my programm. When I want to debug,say,third block, I insert breakpoint somewhere in this...

mer än 10 år ago | 2 answers | 1

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answers

Answered
Delet zeros after final number
There are plenty of ways to do that. For instance, find(A) will find indexes of all nonzero elements. So you can write: B= A(...

mer än 10 år ago | 0

Question

Subtract column from a matrix
In matlab it is easy to subtract number from column or row. I want to subtract column [n x 1] from a matrix [n x m]. Is it possi...

mer än 10 år ago | 2 answers | 0

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mean without stable step
You can write a=mean(M,2) - this will find mean of matrix M along each column. And then take only values you need. For 3033*2005...

mer än 10 år ago | 0

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Find a real number
You can adopt rand function: 10*rand+10 will give you random real number from 10 to 20 randi(10) will give you random integer...

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Answered
convert number to string but keep it the same as it is
You can convert each number separetely in the for loop. for i=1:numel(M) out(:,i)=int2Str(M(i)) end And you will h...

mer än 10 år ago | 0

Answered
how to save the content of the current figure as an image?
If you want to save in with your hands - just click file-> save figure. Or use http://www.mathworks.com/help/matlab/ref/imwri...

mer än 10 år ago | 0

Question

Cannot set axes limits
Hi, I am working with GUI interface. I want to set ,y own xlimits and ylimits. But I cannot do it: figure('name','MomentFinde...

mer än 10 år ago | 1 answer | 0

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answer

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matrix with different randperm rows
Yes, try http://www.mathworks.com/help/matlab/ref/perms.html

mer än 10 år ago | 0

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GUI how can I connect check boxes to uitable?
Try to define them as children of uitable. Similar to uipanel (see example on this page http://www.mathworks.com/help/matlab/ref...

mer än 10 år ago | 0

Answered
How to make 'blue' variable?
<</matlabcentral/answers/uploaded_files/18181/Untitled.png>> Look! only 1 global variable is defined, however you can see a l...

mer än 10 år ago | 0

Question

How to make 'blue' variable?
Hi all, I'm trying to make my own ImageViewer. Using some program as a template, I saw a lot of 'blue' variables in it (when I p...

mer än 10 år ago | 2 answers | 0

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Question

Scrolling and choosing image to display on figure.
Hi there, I have a bunch of images. After some processing, I want to display them. However there are a lot of them. So I want to...

mer än 10 år ago | 2 answers | 0

2

answers

Answered
how to create text file
Hi, http://www.mathworks.com/help/matlab/ref/fprintf.html - to write into a file (and create it) http://www.mathworks.com/he...

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| accepted

Question

How can I install user-developed toolbox?
http://www.mathworks.com/matlabcentral/fileexchange/27659-pivlab-time-resolved-particle-image-velocimetry--piv--tool Like thi...

mer än 10 år ago | 1 answer | 0

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answer

Question

"Download App" in File Exchange
In File Exchange, when I choose some application, say, <http://www.mathworks.com/matlabcentral/fileexchange/47602-reversi Reve...

mer än 10 år ago | 2 answers | 0

2

answers

Answered
how to plot double integral of bessel function?
Do you have Symbolic Math Toolbox? Function int is in this toolbox.

mer än 10 år ago | 0

Answered
imshow does not work in 2014a
No! Imread doesn't require Image Processing Toolbox. Once again: type ver in command line and check if you have Image Process...

mer än 10 år ago | 0

Answered
imshow does not work in 2014a
That is because you don't have Image Processing Toolbox required for imshow

mer än 10 år ago | 1