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How to make and sum up a matrix with upper diagonal direction without for-loop condition [The fastest way!]
This is a fully vectorized operation. And it should be quite efficient. Requires making 2 matrices however. a = [1 2 0 0;3 ...

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Export Bode Plot Data to Excel or text file
Given the data you can export a matrix or a cell array of data using xlswrite. If you have a matrix you can just use xlswri...

presque 12 ans il y a | 0

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how to convert HSV to RGB
The input for rgb2hsv is a rgb color vector |[r g b]| where intensities is between |0| and |1| the the other way it is vice vers...

presque 12 ans il y a | 0

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sir,i want to convert string into a hexadecimal value...is there any direct command?
Have you tried |unicode2native| ? decString = unicode2native('hi','utf-8'); hexString = dec2hex(decString); You can r...

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Question

Why are the 2 lines at the end so time consuming?
Hi, I just ran the profiler on a function and was quite surprised. EDIT: New run function outputVector = addAndReplace(i...

presque 12 ans il y a | 3 réponses | 0

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How to change the figure default key shortcut?
Type preferences in the command window. Then under Keyboard -> Shortcuts you can change the key shortcut to New Figure.

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Question

How can I add color to predefined?
Hi, The plot function have a set of 7 colors that are predefined and can be added as plot(any_x,any_y,'r'); There are...

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Accessing/writing a fieldname values for a blind structure
You may want something like this, function printfields(theStruct) fields = fieldnames(theStruct); for k = 1:length(...

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Index exceed matrix dimensions.
You do not need make all these for loops for this. Instead of for a = 1:12; for f = 1:31 for b = 1:18; for ...

presque 12 ans il y a | 0

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How to plot the results of conv?
Are you sure any of the curves are correct? It seems a bit strange that both curves peaks when one or both of the distributions ...

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For some reason my code is not working , can you please help me. Thank you for your time| | *
Walter Roberson is correct in his answer. The syntax for sprintf is incorrect. However, you want to use a random integer, or at ...

presque 12 ans il y a | 0

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How can I loop into a matrix?
I think that you need to loop here, since Matlab do normally not implement any operations that you reuqests. I mean [vector...

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Multiple axis scales with contourf function
Ok try this, a = 1:5; b = 2:2:10; plot(a,b) ax1 = gca; ax2 = axes('Position',get(ax1,'Position'),'XAxisLocation...

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plot the integral of an array
Ok if it is not too important that the integral is completely correct I guess that "cumsum" would work. Otherwise, you may want ...

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Circular motion of a big dog
Does it work with r*[cos(0:14*pi)+1i*sin(0:14*pi)]; or do you need something else? Other coordinates or structure sho...

presque 12 ans il y a | 0

Question

Error using save can't write file
Hi, I have got this really strange error in matlab. When I try to run the command save(fullfile('filepath','filename'),'...

presque 12 ans il y a | 1 réponse | 0

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multiplication of infinity by zero in Matlab Calculation
The solution to this problem comes from the mathematical limit. 1/0 = inf is really a bit sloppy. If you remember how this was i...

presque 12 ans il y a | 2

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how to do double intergation
You can try if your version of MATLAB supports quad2d. This method uses adaptive simpsons quadrature to calculate 2D integrals. ...

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Error using inline/subsref (line 13) Not enough inputs to inline function.
In matlab the naturlal number e is not defined. It is still a variable. You can try by just typing e. Instead of using you just ...

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Remove high frequency noise
There is a function in matlab called "butter" that creates the coefficients to a butterworth filter of order N with cut-off freq...

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Question

Multiply a cell array with a scalar
Hi, I have a cell array that contain a number of different sized matrices. I need to multiply each of these cell elements, where...

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Why the preallocated matrix perform slower in the case below?
I am not 100% sure about this but I think that when performing the step ZZ = rand(nn(j)), matlab allocates more memory to store ...

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Converting HEX to uint8
Try to reshape it first. You of course only want to send in 2hex at a time since the largest unit8 is 255. Try this, hexstri...

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Iteration across numerous columns
Ok I am still not sure what you meant but I think I have an idea. If you want the mean viscosity for each temperature, for every...

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Question

text image in matlab without using getframe
Hi, I would like to create a text image in matlab, so to say write a text and save it as an image. I have already managed to im...

presque 12 ans il y a | 1 réponse | 0

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Question about exponential transfer function
What do you need this for? In general I would say that you cannot do this. Just look att the definition of the laplace transform...

presque 12 ans il y a | 0

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Using the trigonometric Fourier series to develop MATLAB code to confirm correctness
The solution is quite direct, it is more a matter of understanding. You have the fourier series given as a function of t. What y...

presque 12 ans il y a | 0

Question

how do I calculate laurent series in matlab?
Hi, I have a problem with calculating the laurent series expansion in matlab. The problem is that when I call the function se...

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problem in finding the mode for the following matrix
It works for me with the given atrix. Are you sure this is the exact values of JJ? Otherwise you need to truncate it to a tolera...

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finding common elements in a matrix
You may use the function ismember. The syntax is [member,ind] = ismember(A,B); The first output shows which elements in ...

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