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Getting errors for equations while linear fitting.
What is hsline? help hsline It is not found in any MATLAB toolbox. So if hsline is code you found somewhere, or whatever, then...

4 years ago | 0

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matrix 0f {0,1}
About as confusing a question as I could imagine, but after reading it several times, I will make a guess. I think in the end, ...

4 years ago | 1

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Creating a matrix such as a = [1 1 1 1 1 1 1; ... 1 2 2 2 2 2 2; ... 1 2 3 3 3 3 3; ... 1 2 3 4 4 4 4; ... 1 2 3 4 5 5 5; ... 1 2 3 4 5 6 6; ...
Hint #1. Can you just create the matrix from scratch each time? So, is there a simple formula for a(i,j) in the order n matrix? ...

4 years ago | 1

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How does matlab get the combinations that meet certain conditions in the matrix
Assuming you want to solve this problem: 2*A1 = A2 A1 + A2 = A3 then you could use the ndgrid solution, as shown by Wal...

4 years ago | 0

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2nd order relationship between density and altitude using curve fitting.
z = [6377 6378 6379 6380 6381 6382 6383 6385 6387 6392 6397 6402]; %km rho = [1.225 1.112 1.007 0.9093 0.8194 0.7364 0.6601 0.5...

4 years ago | 0

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How can I make a fuction that takes two points and returns the coefficients a, b
Surely this is homework. So I hope people do not do your homework for you. At the same time, it is easy to find the formulas onl...

4 years ago | 0

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precision of function: UNIQUE
help uniquetol

4 years ago | 0

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Help making a matrix table
Can you create a matrix of all ones? Consider the function triu. Read the help. Look at the examples.

4 years ago | 0

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Out of Memory error when resizing 3D volumes
Simple. If you are running out of memory, then just get more memory. An image of that size 2080*2080*2145 has almost 10 billi...

4 years ago | 0

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Possible to Disable Weight Rescaling for Matlab Curve Fitting?
No matter how you look at it, weights MUST be relative. A weight effectively says that data point i is K/L times as important as...

4 years ago | 0

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How to parametrize a function ?
syms x y eq = sqrt(y) == x; syms t real ysol = solve(subs(eq,x,t),y,'returnconditions',true) The constraint tells you that t...

4 years ago | 0

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'polyfit' for parametrized curves.
Can polyfit be made to solve this in a parameetric form? NO. Why not? Because even if it COULD be used for that purpose, the res...

4 years ago | 1

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Boolean operations with polyshape objects
Computers are such literal things. They do what you tell them to do, not what you want them to do. The fix lies in the mind read...

4 years ago | 0

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Observation: sortrows() blows up when attempting to sort empty cells
output = cell(5,5); output(1:3,1:5) = {'1'}; output(4:5,1:5) = {''} sortrows(output) Gosh. I must be using a different versi...

4 years ago | 0

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Moment diagram code error when using .^2
You SAID that you understand the need for the .* and .^ operators. Then we see this: M=-(UDL/2)*(x-0).^2*(x>0) + (UDL/2)*(x-4)....

4 years ago | 0

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plot two implicit functions in one figure
Show what you have tried. If nothing, why not? First, apparently you know what an implicit function is. So have you tried using ...

4 years ago | 0

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How do I make a specific range of numbers and increment?
What does any of the other information have to do with anything? That is, we have no interest in the values of Q, R, or kJ, or a...

4 years ago | 0

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Help with non linear equations.
syms mu sigma alpha eq(1) = 8.07 == mu - sigma + sigma*(1-0.1)^(-1/alpha) eq(2) = 11.82 == mu - sigma + sigma*(1-0.5)^(-1/al...

4 years ago | 1

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I deleted part of the trapz function code, how do I fix it?
@Bora Eryilmaz gives the code. Thanks for having done that. In the long term though, this points out why you should strenuously...

4 years ago | 0

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How to solve an ecuation without symbolic variables?
I won't do homework. But I'll give you a hint or two. First, what does the mean value theorem tell us for integrals. It says th...

4 years ago | 1

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Optimization of a multivariable function within given solution space
100 variable problems are hugely more complex than 3 variable problems on a very limited search space. You can often solve the s...

4 years ago | 1

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Mirror a point cloud (nx3 matrix) with respect to a plane
Pretty simple really. The YZ plane lies at X == 0, and is perpendicular to the x axis. So just negate the value of x, in each ...

4 years ago | 1

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New to matlab and I do not understand given code
As much as I dislike doing homework for students, this is a case where I will relent, because it is very uncear why one would su...

4 years ago | 0

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Is there a function to find the paired factors of an integer?
allfactorpairs = @(n) [divisors(n)',n./divisors(n)']; allfactorpairs(16) If you want only those pairs where the first elemen...

4 years ago | 0

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How to detect cluster of radial lines which are generated from same point ?
Surely there is a tool you can find in image processing to search for lines. Use it. Find all lines in the image. For EACH dark...

4 years ago | 0

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Symbolic solution for intersection points between a torus and a circle. How to make it concise? (for rewriting to C++).
How would I do it? Simple enoiucgh. The equation of a torus is easy to write in a parametric form, so as a function of two angle...

4 years ago | 0

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new interface for QR decomposition in Matlab 2022a
Yes. You are correct, in that QR now returns only the upper triangular factor. A = rand(5,3); result = qr(A) In the release h...

4 years ago | 0

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Polyfit coeffs weird output
You don't really need to show anything more than this: [p,s] = polyfit(x1,y,15); A degree 15 polynomial. That means the equati...

4 years ago | 1

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how to derivate an equation of x and y without taking any variable constant?
Specify that y is a function of x. You o so like this: syms y(x) Now you can differentiate that expression with respect to x. ...

4 years ago | 2

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while loop keeps running forever
I think you seriously need to spend some time with the MATLAB tutorials. while is not terminated by endwhile A while loop is n...

4 years ago | 1