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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...

11 years ago

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How can I find 4 or more character pattern in number array
If you define the pattern that you're looking for as x, for example x = [3 9 12 3] then you can find the starting index...

11 years ago | 1

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Aligning Time Series data and calculating CAPM beta.
You're doing great for a beginner. You're using logical indexing in your code which is awesome. I'm assuming that you are ge...

11 years ago | 0

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How to build the search fast?
If you have the Statistics Toolbox, you could use a <http://www.mathworks.com/help/releases/R2012b/stats/dataset.html dataset> a...

11 years ago | 0

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How can I save the values inside ODE solver?
Does the random value need to be generated inside your ODE function? In other words, can you pass it in as an input variable? ...

11 years ago | 0

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How to use Switch case and if else in Embedded Matlab Function
You can use the same syntax that you would in MATLAB. Here are links to the documentation for <http://www.mathworks.com/help/ma...

11 years ago | 0

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How to: For loops for Excel Tab
If you know the names of your sheets, you can create a cell array containing those names. The output from the xlsread function ...

11 years ago | 0

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How to remove the data-type error in lsqcurvefit ?
It looks like the issue might be in the optim function in the use of the input variable S. Can you make a simple call to optim ...

11 years ago | 0

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Adaptive background Subtraction Algorithm
There are a couple things that I notice in this code. First, I'm not sure, but I think that you might want to apply the thresho...

11 years ago | 0

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How to: For loops for Excel Tab
I'm not sure exactly what you are asking with regard to num(2,13). But here is some code that will read in different tabs of an...

11 years ago | 0

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Consolidate Substring Code using Cellfun
It isn't necessary to loop through the char array. You could do something like this: y = { '10/5/05' ; '18/2/2004' ; '3/3/...

11 years ago | 0

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writing a matrix without loop
Yes, you can create this matrix without using a loop. Use array based mathematical expressions such as ./ and .* a = sin(2...

11 years ago | 1

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Plotting Multiple y-axes with different range on the same plot
The issue is that this function can only plot one line per set of axes - so only three lines. I have hacked Denis Gilbert's p...

11 years ago | 2

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Datenum - different date formats
Would something like this help? % Create a cell array containing dates in various formats y = { '10/5/05' ; '18/2/2004' ...

11 years ago | 1

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how could I use the "find" command to compare two matrices?
Comparing two matrices directly will give back a logical array: control_matrix= A<B; The find function will find the ind...

11 years ago | 1

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Create a matrix whereas values can be -180 0 or 200
I'm sure there's a more elegant solution, but here's one: x = randi(3,1,24)-1; x(x==1) = -180; x(x==2) = 200;

11 years ago | 1

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Calculating Max and Min of subsets of data
Is your matrix 7875 x 8? Also, when you say "every 57" does that mean the first 57 rows? The first 57 elements in the column...

11 years ago | 2

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Boxplot - Size of the Labels
set(findobj(gca,'Type','text'),'VerticalAlignment','top')

11 years ago | 0

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Find value of z of a surface plot when values of x and y are known.
You can do this using the <http://www.mathworks.com/help/matlab/ref/triscatteredinterp.html TriScatteredInterp> function. Her...

11 years ago | 0

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how do you write a programme with *if statement*for L infinity norm having written L1 and L2 norm. how do you represent L infinity norm?
MATLAB has a <http://www.mathworks.com/help/matlab/ref/norm.html norm> function that you can use to find all the norm values. I...

11 years ago | 0

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Need help Linearizing a Simulink Model?
Posting the comment from Erman Korkut as a solution: Frestimate usually takes a couple of tries to come up with the right inp...

11 years ago | 1

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Load CSV file to matlab and avoiding word written in csv file for data analysis
You can load it using the <http://www.mathworks.com/products/matlab/examples.html?file=/products/demos/shipping/matlab/textscanD...

11 years ago | 1

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For Loop Segment Troubleshooting
You can add a breakpoint in your script by clicking on the horizontal line to the left of the number in the MATLAB Editor. This...

11 years ago | 0

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index out of bounds because numel(averg)=1
You are using linear indexing to index into A, and so the output is a row vector. For example: A(1:end-2) will take all terms ...

11 years ago | 0

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Solved

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:...

12 years ago

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omitting array
If your matrix is called m, you can reference the odd rows like this: m(1:2:end,:) If it is always going to be a vector ...

12 years ago | 0

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Multipline plotting
X = [ A(:,1) A(:,3) ]'; Y = [ A(:,2) A(:,4) ]'; line(X,Y,'color','b')

12 years ago | 0

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sqrt(2) 100 places and more
format long will show 15 digits. fprintf(1,'%.100f\n',sqrt(2)) will show 100 digits. However, that precision is ...

12 years ago | 0

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Optimization with complicated constraints
Yes, MATLAB can solve nonlinear optimization problems. Since it would be a lot to type everything out, this example <http://www...

12 years ago | 0

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Force data acquisition
I can point you the documentation telling you which data acquisition cards are supported in MATLAB: <http://www.mathworks.com...

12 years ago | 0

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