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How to merge red and blue images on white background with transparency
Easy enough, in a very lazy way too. If you kow how to do what you want with a black background, then make it so. And then back....

7ヶ月前 | 0

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How to use arrayfun with built-in Matlab functions where the variable parameter is passed with 'Name', 'Value'?
I see this soooo often, people thinking arrayfun is a good way to speed up code. But, is it, really? Arrayfun is a nice tool to ...

7ヶ月前 | 1

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solving system of equations
There is absolutely no need to use an iterative solver!!!!!!!! The idea is to remove the absolute value from your problem, and ...

7ヶ月前 | 0

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Can not read MAT file in another language
My guess is Julia can read a .mat file created for an earlier release of MATLAB. Looking at the help for save, you can specify a...

7ヶ月前 | 0

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Trying to do an fsolve via an anonymous function
You say you want to use fzero. But you need to understand that fzero is a ONE variable solver. It CANNOT solve a multi-variable ...

7ヶ月前 | 0

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Precision lost when combining Int32 integers with single precision numerical numbers
Why is MATLAB set up this way? Because you can't please all of the people, all of the time. Suppose a numeric vector could have ...

7ヶ月前 | 4

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What is the difference between A={1 2} and A = { '1','2'} and how to convert one from other ?
Think of it like this: 1 is a "number" as stored in MATLAB, as is 2. X = [1 2] whos X X is stored in double precision. We ca...

8ヶ月前 | 0

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comparison between two optimisation algorithms
There are very, very many ways to solve a computing problem. You have chosen one of them, and it worked for you. Is the choice...

8ヶ月前 | 0

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Strange behaviour of plot
Cute. If you try this in R2025a: small = 1e-7;plot([0,small,1],[0,small,1]) small = 1e-8;plot([0,small,1],[0,small,1]) (Sorry...

8ヶ月前 | 0

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How does Matlabs svd() function calculate the value of V?
UM, You seriously do not want to use X'*X to compute anything about the SVD. Yes, mathematically, it is the same. But this is no...

8ヶ月前 | 1

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icc rgb profile editing
You can use iccread and iccwrite. help iccread help iccwrite Having used iccread, you can modify whatever you wish, then writ...

8ヶ月前 | 0

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How to reduce the file size of MAT files?
NO. Rounding numbers will change nothing. MATLAB does not store double precision numbers in decimal form. So even though you thi...

8ヶ月前 | 0

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select line by touching with mouse
"select curve?" Well, yes, in a sense. When you plot the curve, you can supply a ButtonDownFcn, so that when you click on the c...

8ヶ月前 | 0

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Fitting a blackbody curve with two variables - having issues with lsqcurvefit stopping and unsure how to use options effectively
Your data does not seem to fit terribly well to the model you propose. c=2.998e8; h=6.6261e-34; kb=1.38e-23; %wavelgnth (x...

8ヶ月前 | 1

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How to generate all 2^n combinations of n choices from a 2-vector?
Simple enough. Don't use combinations. n = 3; t = dec2bin(0:2^n - 1) - '0' Easy enough to make that into a table if you so de...

8ヶ月前 | 1

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Matlab 'try now' and contact customer service doesn't work
Answers is not customer support. In fact, we are generally not even employed at The MathWorks, though some TMW staff do visit th...

8ヶ月前 | 0

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is readmatrix a built-in Matlab function part over every install after 2019a?
NO. Not for ANY release number. Some of those functions may have been introduced in different years, different releases. And if ...

8ヶ月前 | 0

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Constraints to a Second Order Curve Fit
You want to constrain the quadratic coefficient to be positive. But your data wants it to be a little bit negative. Effectively,...

9ヶ月前 | 1

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Is vectorization worth the trouble with recent MATLAB?
Is vectorization worth it? Let me see. For example: Add 1 to every element of a vector. V = rand(1,1e6); % Which is itself high...

9ヶ月前 | 0

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How to specify intervals of increasing, decreasing of a function in MATLAB
This can get fairly messy, if your function is carefully designed to cause you problems. For example, you may need to find a sin...

9ヶ月前 | 1

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Not exactly the exact answer using Symbolic Math Toolbox
Your problem stems from a common mistake. Whaen you write this: syms t f = sin(t); frms = sqrt(1/(2*pi)*int(f^2,t,[0 2*pi]))...

9ヶ月前 | 1

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How does the expfit function... functions
You may be confused. Well, let me say, almost certainly, you are confused. ;-) There is a difference between curve fitting, in ...

9ヶ月前 | 0

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No results are showing in the symbolic math computation
First, you need to recognize MATLAB is case sensitive. Your code does not run, instead, it fails in several places. I fixed it, ...

9ヶ月前 | 0

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Solving ODE just for one time step
Then I fail to see the problem. You want only the solution at the end point. % A simple ODE. with y(0) == 1, the analytical s...

9ヶ月前 | 0

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Analyzing errors of a numerical Jacobian matrix of partial derivatives, as the finite-differencing step-size gets successively smaller,
I explained EXACTLY this in my last answer to your last question. Please read what I write and think about it. If you don't then...

9ヶ月前 | 0

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How can I reduce the "method error" with my central-difference method, when estimating a Jacobian matrix of partial derivatives?
This is a complex question, with possibly no perfect answer. For example, suppose you have a Newton method, that employs a fini...

9ヶ月前 | 3

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Better package manager abstracted away from matlab versions
Why don't they have the perfect set of tools, exactly as you want them to have been written? Because MATLAB was designed to make...

9ヶ月前 | 0

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Generate n random numbers between 0.1 and 0.9 without repetition
There are always many ways to solve a problem. Here is mine: % generate the set of ALL possible combinations. There are not man...

9ヶ月前 | 0

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How to get real root of a function using fminbnd?
It sounds like you want to see the result: (-1)^(4/3) == 1 To do that, you want to use nthroot, by splitting the fraction...

9ヶ月前 | 0

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solving numerically non-linear equation , code below does not work
What does not work? This is just a basic Newton-Raphson method. First, what are the functions for your test problem? x^2 + y...

9ヶ月前 | 1