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How can I find the location of the minimum and maximum
Others have explained how to get the index of the max or min, but I'm wondering if you actually want to know what the matrix is ...

8 years ago | 0

Answered
curve fit with ode bad fit ??
Ah. This may have been partly my fault for mixing notation (lots of t and x and y all floating around). A good check is to see w...

8 years ago | 0

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Answered
Wrong coloring of legend in semilogx plot
I just tried an example in R2013b and it worked fine, but then I messed with it a bit and happened to get something very similar...

8 years ago | 0

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Dynamic Variables in Loops
Yes, this has been answered before, and the answer is: <http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....

8 years ago | 1

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Answered
Masking and removing green pixels
At the risk of being accused of shameless self-promotion... <http://blogs.mathworks.com/steve/2014/08/12/it-aint-easy-seeing-gre...

8 years ago | 0

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Need help creating Easy function
<https://matlabacademy.mathworks.com/R2014b/ MATLAB Academy> can help you learn the basics of MATLAB. Or the "Getting Started" s...

8 years ago | 0

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how can i stop while loop immediately by a push button?
Once the first |imcrop| call is complete, the |imshow| command is executed, then |data.stop| is checked. That gives you the blin...

8 years ago | 0

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how can i stop while loop immediately by a push button?
When you say "i would like to stop it immediately by the button press", do you mean you'd like to interrupt the |imcrop| calls? ...

8 years ago | 0

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curve fit toolbox help system ODE and excel?
If I interpret your problem correctly, you have a system of ODEs with a parameter -- y' = f(t,y;c) -- and an Excel spreadsheet t...

8 years ago | 0

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Answered
How can I perform a curve fit using polyfit on an exponential decay model?
The problem is that when X is big, 3*exp(-0.5.*(X)) is very small. Because of how floating-point arithmetic works, that's OK as ...

8 years ago | 0

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So apparently my textbook is out of date
What version of MATLAB are you running? (Enter |version| at the command prompt and it will tell you, if you're not sure.) The co...

8 years ago | 0

Answered
How to move a (x,y) line plot to the z axis?
Something like this, perhaps? x = linspace(0,1)'; y1 = cos(2*pi*x); y2 = x.^2; y3 = y1.*y2; ribbon(x,[y1,y2...

8 years ago | 0

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Why this algorithm work only for 4 equations ?
Your |checkResult| function is returning something insufficiently close to zero. Given that it seems to be comparing the result ...

8 years ago | 0

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How to find the border points for a set of latitude and longitude coordinates
You don't actually need Mapping TB to find boundaries. You can do it with <http://www.mathworks.com/help/matlab/ref/convhull.htm...

8 years ago | 0

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Answered
Help me differentiate between two codes??
Ah, yes. This curious bit of syntax. What you ended up with was |sum(x)|! Why? Well, MATLAB evaluates the first condition |a <= ...

8 years ago | 0

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how can i align two arrays according to their clock
If by "align the data" you mean you want both |data1| values and |data2| values at some common |time| values, then you will prob...

8 years ago | 0

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Answered
how to write a function in interval?
<https://matlabacademy.mathworks.com/R2014b/ MATLAB Academy> can help you learn the basics of MATLAB. Also the <http://www.mathw...

8 years ago | 0

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Answered
why do I get "Matrix dimensions must agree" when using "<"
Given the form of the error message and your comment that it works for a given value of |i| (presumably at the command line), bu...

8 years ago | 0

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Iterating in a dataset encompassing a structure
If I understand the problem correctly, you're getting a dataset with variables |r0|, |r1|, |foo|, |potato|, etc, each one of whi...

8 years ago | 0

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Answered
Solve two second order differential equations where initial values are known in a vector!
Are your equations correct there? It seems like the RHS should involve sqrt(x'^2 + y'^2) not x''^2 and y''^2. I'm going to assum...

8 years ago | 1

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Answered
Finding indices when the curve stops decreasing
If you have Signal Processing TB, have a look at the <http://www.mathworks.com/help/signal/ref/findpeaks.html |findpeaks|> funct...

8 years ago | 0

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How to set regexp expression for HH:MM dd.mm.yyyy format?
As an alternative suggestion, one approach is to pass the problem on to |datenum|: just pass the user's input along to |datenum|...

8 years ago | 0

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demonstrating concept of confidence interval for the mean value?
Can you clarify your intent? It looks like you're doing 100000 experiments where you take 5 (n) random values in each experiment...

8 years ago | 0

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Custom map coloring and legend in Matlab 2014b
I can't exactly replicate your problem because I don't have the files you're reading from, but I can get the same basic problem ...

8 years ago | 0

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Reading Excel XY Data and Interpolate
This is a pretty huge question -- it really depends what you're assuming about the data and, consequently, what you're trying to...

8 years ago | 0

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Answered
What does the value s do in my code??
This code is... a bit muddled. At the end of the day, the |s| is not really necessary. The problem you were having before with t...

8 years ago | 0

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problem with overwritten data when auto saving
I'm not entirely clear on what the crux of the problem is. Are you trying to loop through the directories (nr, nr2, nr3) and wan...

8 years ago | 0

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I am a beginner using figures and uicontrol
Your |button_callback| function declaration line is commented out, so you literally have an |Undefined function 'button_callback...

9 years ago | 0

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