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how to read a .txt file in matlab ?
Suppose that your file is called data.txt You can load the data simply with load('data.txt'); which will create a variabl...

oltre 10 anni fa | 0

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patch question? image processing
How are you creating the patch? Is it only one patch? If you want the patches to be painted, you will need to create two patc...

oltre 10 anni fa | 0

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How to find the reverse of a permutation vector?
Notice that p = P * (1:4)' The same for pt, i.e. pt = P' * (1:4)' For vectors p of length N, just use: pt= P' * (...

oltre 10 anni fa | 0

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How to supress a warning which does not have a corresponding warning ID.
Use warning('off','comm:obsolete:vxlib'); It may ask you to unlock the library first in a popup window, which you can do...

oltre 10 anni fa | 0

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how to merge 2D and 3D plots with desired positioning
You can use *surf* as you did with the cylinder. You then might need to define the grid small enough and set the colours outside...

oltre 10 anni fa | 0

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Selecting a subset of a larger matrix with criteria
Dear Noah, Suppose that A is your original matrix and B is the matrix you want to obtain. You could do something like this:...

oltre 10 anni fa | 0

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More efficient dot product function.
Are you using the function *dot(x,y)* ? If that's so, better use x'*y (assuming that x and y are column vectors) In my...

oltre 10 anni fa | 1

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Traversing Through a Vector of Different-sized Cells
Assuming that V =[20 40 10 20 5 10 30 15 25 35]; C ={ {1 2 3}; {5 2 3 1}; {3 4 2 1}; {1 ...

oltre 10 anni fa | 1

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How to make loops run faster
Try this for j=days_left_in_contract-1:-1:2, counter=days_left_in_contract-j; difference=min(counter,days_left_wi...

oltre 10 anni fa | 1

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Can anyone tell me what is the difference between scatter and plot commands in Matlab?
scatter draws points without lines connecting them whereas plot may or may not plot the lines, depending on the arguments. sc...

oltre 10 anni fa | 5

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Preallocating memory for a matrix of unknown size
You can use a buffer. I mean, suppose the matrix you want is M, then create M=[]; and a vector X=zeros(xsize,2), where xsize is ...

oltre 10 anni fa | 3

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How to solve "Index exceeds matrix dimensions" error?
At first glance, the error should appear as a consequence of the line Bdata_in = Bdata_s(1:NumBasei , :); So, I would re...

oltre 10 anni fa | 0

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Yes it is! First you need to make a vector b with the labels: b=arrayfun(@(x)num2str(x),a,'UniformOutput',false); Then,...

oltre 10 anni fa | 0

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How to run two dependent function simultaneously?
Dear Andrea, you might consider to check the post in http://www.mathworks.com/matlabcentral/answers/2081-how-to-execute-t...

oltre 10 anni fa | 0

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How can i graph ponits with coord and value assigned, as colour graph
The result of patch depends on the patches you define, so at least using patch, there is no other way. What you can certainly...

oltre 10 anni fa | 0

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How can i graph ponits with coord and value assigned, as colour graph
Have you taken a look at the command *patch* ? For example patch('Vertices',V,'Faces',F,'FaceVertexCData',D,'FaceColor','in...

oltre 10 anni fa | 0

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I can only think of two options: 1) Add spaces separating the fields in the data, i.e. instead of ddmmyyyyHHMM, modify the da...

oltre 10 anni fa | 0

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Search and delete row from cell array
Suppose that C is your cell array Cnew=C; %Just for not losing original values Cnew(cellfun(@(x)isempty(x),C(:,6)),:)=...

oltre 10 anni fa | 1

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Changing Axis in a GUI and Saving a figure in a GUI
Dear Rhys Taus, I might be wrong, but I think the problem is that you might be rewriting the axes instead of modifying them. ...

oltre 10 anni fa | 1

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What does rgb palette mean?
RGB means Red Green Blue, and rgb2gray needs an mx3 matrix because each column in that matrix represents red (first column), gre...

oltre 10 anni fa | 0

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Yes, try this: uicontrol('style','popup','string',{'<HTML><FONT COLOR="red" SIZE="10" FACE="ARIAL"><b><i>Here</i></b></HTML...

oltre 10 anni fa | 2

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plotting wind direction V/S time in months (timeseries)
Suppose you have the data in a matrix A, each row representing a measurement. The day would be in the first column and the direc...

oltre 10 anni fa | 0

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Comparing user input and dataset to select appropiate value

oltre 10 anni fa | 0

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How to add one more column in dataset
I might not have understood your question, so please let me know if this does not answer it. Suppose that you have a dataset ...

oltre 10 anni fa | 1

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Hopefully this helps: 1) Save the handles of the ui elements. Suppose that hpopup and hslider are the handles of the pop up m...

oltre 10 anni fa | 0

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Counting numbers in a sequence while corrosponding to another sequence
You can do that using the following code A=[1 2 3 4 5 6 8 9 10 11 12 13 14]; B=[6 6 6 6 4 4 4 2 2 6 6 4 4]; C=d...

oltre 10 anni fa | 0

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how to create matrix iteration
You can use while as follows while any(A) end *any*(A) assumes first that all values of A can be converted to type *l...

oltre 10 anni fa | 0

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Use convolution (conv) for probability distribution... ?
Dear Mats Lindqvist, I've found several possible explanations, so please check if anyone results to be your case: 1) As it...

oltre 10 anni fa | 1