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improve fit compared to R
x = [0.858734025700000 0.975248753121875 1.02525125312812 1.13140821289062 1.15927407430000 1.18768630564687 1.21665290240...

1年以上前 | 1

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Some .jpeg photos can not be processed by Matlab code.
I've not even looked at your code. But you have jpg images, uint8 code values. So I wonder if adding the code values caused an o...

1年以上前 | 0

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Finding concave hull around abstract shape
I don't know the soure of this data. But, can you start with the two pieces as separate entities, form polyshapes from each, and...

1年以上前 | 1

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Numerical Integration MATLAB vs Python/VBA
This is difficult to say, because we know virtually nothing. First, does the problem arise from the use of subtly different da...

1年以上前 | 0

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Warning: Explicit solution could not be found./ empty sym
Does an analytical solution exist for EVERY equation you can write down? (No.) Even if such a solution does exist, is it certain...

1年以上前 | 0

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fmincon is not converge
It is very rarely easy to know why a solver fails to converge on a messy thing like this. But you should never let it come to th...

1年以上前 | 0

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Is there any way to perform an at least partially symbolic smulation (using ODE or discrete model) in simulink?
Essentially, no. This is a frequent question about tools like ODE45 too. Simulink is a purely numerical tool, like ODE45 and oth...

1年以上前 | 0

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d solve command matlab
syms e P S A t m V0 t0 V(t) real The point being that assumptions can apply only to variables, not functions. V(t) is a functio...

1年以上前 | 0

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Plotting data dependent on three independent variables.
Do you have a 4-dimensional holographic monitor? That is, you can plot things in 3-dimensions. You will see a projection into a ...

1年以上前 | 0

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vector output of a symbolic vector
syms s X Y Z l1 = X*s - 1 == 3*X + Y + Z + 2/s l2 =Y*s == - X - Y - 1/s^2 l3 =Z*s - 2 == X - Z - (s - 1)/s^2 [Xsol,Ysol,Zsol...

1年以上前 | 0

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Optimisation of three function in two variables
There may be an issue here, if you think you can maximize them all simultaneously. The (x,y) coordinates that maximizes one func...

1年以上前 | 1

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About fitting one curve with one equation and calculating two values from fitting
Suppose I gave you a set of data, and asked you to tell me two parameters from the data. All I need is one data point, More woul...

1年以上前 | 0

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How to fit this model with a Weibull distribution?
If this is data that you think comes from a Weibull, then you do not want to use regression techniques to fit the distribution. ...

1年以上前 | 0

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how i can show in matlab tha sqrt(x^2)=x in symbolic toolbox
Except, that equality does NOT hold! The sqrt "function" has two branches. sqrt(x^2) can as easily be -x, as it is x. So you can...

1年以上前 | 1

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I keep getting 4 answers per variable in 4x1 sym
L = 225; % Length of the ship in meters B = 32; % Beam of the ship in meters T = 12; % Draft of the ship in meters v = 0.5; %...

1年以上前 | 1

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Find zero of simple monotonic function where the independent variable can only be integer
@Michael Albert No. You just THINK there is some obscure MATLAB function to solve your problem. You do not know that to be the ...

1年以上前 | 0

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Why is my test accuracy higher than validation accuracy?
Not really. It might be a reflection that you needed more data, that your sets are just not large enough. The law of large numbe...

1年以上前 | 0

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What is happening with the line of best fit here?
StrainStress = [0.00005 010.1; 0.00007 014.3; 0.00011 021.8; 0.00014 027.6; 0.00020 040.0; 0.00030 061....

1年以上前 | 1

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Generating a matrix of 0s and 1s with constrained domains
Are you saying you want to break the matrix into a set of regions, where within the region, the matrix contains zeros, and the r...

1年以上前 | 0

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How to provide a positive and negative value for the tolerance value?
Good answer by @Voss of course. I'll merely add a few points of interest. You could just test to see if the current term being ...

1年以上前 | 1

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Finding out lengths of sequences of numbers in a set of vectors
It took a few seconds staring at the output you expect to see, and realize what you meant. I THINK the first element in each row...

1年以上前 | 1

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Is there a premade file regarding a verification test to see if there is any issues with the installation?
Is there anything that will test every line of code in MATLAB? Every toolbox you have purchased? No. Not that is given out to yo...

1年以上前 | 0

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I have a question relate to Gauss seidel method
Updating the vector x (small x) and then looking to see if the vector X (capital X) is converging seems like a bad idea. You did...

1年以上前 | 0

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integral using "int" function
Not everything you write down will have a simple, algebraic solution. As much as people seem to think they are, computers are no...

1年以上前 | 0

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f(x) = x^2/3(3-x^2)(x-4). How do I enter this function in MATLAB?
How do you enter it? You already did exactly that, at least in symbolic form. syms x real % f= input('Enter the function f(x):...

1年以上前 | 0

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Very large output numbers
syms Kc s X = (6982830709666455*Kc*s)/140737488355328 vpa(X,10) So here, 10 digits shown.

1年以上前 | 0

Discussion

Answers not displaying symbolic results? FIXED
syms u v atan2alt(v,u) function Z = atan2alt(V,U) % extension of atan2(V,U) into the complex plane Z = -1i*log((U+1i*V)....

1年以上前 | 2

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atan2 does not accept complex numbers as input
It seems the answers provided so far are missing the point. If we want to see a 4 quadrant atan2 version, that works for complex...

1年以上前 | 1

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Generalised solution to a n-order system of equations
(Edited to fix my error in extrapolating your equation system. I had not seen at first you were essentially adding two terms to ...

1年以上前 | 2

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I need to write a code to find numbers divisible by 7 and multiples of 5 from 1500:2700. How do I preallocate line 4 for speed and is my code the most efficient way to solve
Lol. A huge amount of traffic on this from last night when I looked in. But you did write code. So how would I solve the problem...

1年以上前 | 0