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Y-axis lim with Bar/Line overlay
figure; h_bar = bar(_data(:,1),Y); set(gca, 'XTick',_data(:,1)); set(gca, 'XTickLabel', _data(:,1)); h1 = gca; ...

quasi 15 anni fa | 0

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match a number (date) in a matrix - Matlab
I don't think there's a completely vectorized solution, but this is close: d = datenum(bsxfun(@minus,datevec(lastDay(:,2)),[0...

quasi 15 anni fa | 0

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Listing files in an arbitrarily named and deep tree
Looks like you're on a Windows system, so try: [~,flist] = system('dir *.avi /B/S') You may want to |cellstr| the result. *...

quasi 15 anni fa | 0

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Numerical Integration with functions as borders
You could do this as an iterated integral using |quad| (twice). Hooray for Fubini's Theorem! Here's the volume of a hemisphere...

quasi 15 anni fa | 0

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RK4 in MatLab Help!
Ahhh the classic problem. A few things I notice: # Your |vexact| is, I assume, supposed to evaluate the exact solution. In ...

quasi 15 anni fa | 0

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Fitting two sets of data to one function simultaneously
I think a simple |fminsearch| might be easier in this case. You'll have to figure out how you want to define your total error t...

quasi 15 anni fa | 0

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writing mfile using a mfile
You can programmatically interact with the MATLAB Editor using the API introduced in R2011a: http://blogs.mathworks.com/deskt...

quasi 15 anni fa | 0

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Select matrix rows based on criteria
I can't quite work out the code (maybe the formatting is confusing me), but it sounds like what you're trying to do is this: ...

quasi 15 anni fa | 0

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finding the distance between elements of a vector
OK, from what I can tell from your further input, I think this function does what you want. function d = xyspace(A,x,y) ...

quasi 15 anni fa | 0

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Exponential Curve fitting
Looks a whole lot like a typical local-vs-global minimum issue. The minimum that |fminsearch| finds depends heavily on the init...

quasi 15 anni fa | 0

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quasi 15 anni fa | 0

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How to select 2nd largest number (or largest if no 2nd largest)
Is it possible to have repeated values? If so, what do you define as the "second largest" value? Eg |secondmax([1 2 3 3]) = 2|...

quasi 15 anni fa | 0

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MATLAB GUI Popup Menu
Here's an example that I think is similar to what you're trying to do. It sounds like you're using GUIDE, in which case use the...

quasi 15 anni fa | 1

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finding the distance between elements of a vector
Do you know that you'll always have pairs? That is, could you ever have a vector |[0 2 0 -3 0 5 0 -2 0 0 3 0 0 0 0 2 0 -5]| or ...

quasi 15 anni fa | 0

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Anonymous Function Differentiation Problem?
If you know the independent variable is called 'x': fprime = str2func(['@(x) ',char(diff(sym(regexprep(char(f),'^@\(x\)',''...

quasi 15 anni fa | 1

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Graphing a linear regression line from given points, very simple example, having trouble with matrices dimensions?
% Enter t=dataC and y=dataABS as columnwise vectors And then you enter them as rows :) Stick a transpose ( |'| ) on those th...

quasi 15 anni fa | 0

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Solutions using ODE with different initial conditions
As well as Walter's solution, you can also simply specify fixed timesteps for |ode45| to use: tvals = % make a vector of ti...

quasi 15 anni fa | 1

quasi 15 anni fa | 0

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very basic matlab question about .dat file
The statement of the problem seems ill-formed to me. How are these variables being "measured"? I could see reading in *from* a f...

quasi 15 anni fa | 0

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how to halt the program?
ctrl-C?

quasi 15 anni fa | 0

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Store as array not variable
The classic trap! c1 = b^2*(((exp(a*2*pi)-cosh(a*b*T0))/sinh(a*b*T0))^2-1); The divide there will be interpreted as a ma...

circa 15 anni fa | 0

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simple quastion about randn and mean of random noise
|n = randn(1000,1)| creates a *vector* (1000-by-1), so |sum(n)| is the sum of the thousand random numbers. Taking the mean is t...

circa 15 anni fa | 0

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Minimization of function. Plz Help.
R = [1 2 3;4 5 6;7 8 9]; [row,cols] = size(R); f = ones(1,cols); fobj = @(x) growth(R,x); opts = optimset('A...

circa 15 anni fa | 0

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fminsearch with output constraint
But by definition |fminsearch| is an unconstrained method, so you can't provide a constraint. If there's some reason you can't ...

circa 15 anni fa | 0

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Stock time interval conversion
Do you want to index or do you want to interpolate? Given that you don't necessarily have data for the values you want (every f...

circa 15 anni fa | 0

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Appending to a saved dataset
If it just comes down to "I'd like to be able to append to the exported dataset instead", then here's one way to do it, but it's...

circa 15 anni fa | 0

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??? Error using ==> mldivide Matrix dimensions must agree.
Unless you actually want to do a matrix division, a simple solution is to do a find-n-replace: "/" -> "./" Otherwise, please ...

circa 15 anni fa | 0

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Is there a reason MuPad doesn't find the obvious cancellation?
I'm guessing it's something to do with assumptions about squares and square roots, and maybe denominators. Wouldn't swear to it...

circa 15 anni fa | 1

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Black pixels to white
x = imread('street1.jpg'); figure image(x) idx = all(x==0,3); x(repmat(idx,[1,1,3]))=255; figure image(x) ...

circa 15 anni fa | 0

circa 15 anni fa | 0

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