Question

How to replace all row vectors except 1st according to the difference?
I have a matrix named as 'two' of size 100 x 4. I have also a singe row vector u=[-55 55 65 -65]; Let we find the error ...

ungefär ett år ago | 1 answer | 0

1

answer

Question

How to replace the array data in workspace data?
I have three Mat files namely '2sn0dB.mat', '3sn0dB.mat' and '4sn0dB.mat'. All of them have array 0f size 100 x 1 and having sam...

ungefär ett år ago | 1 answer | 0

1

answer

Question

How to replace the values of a vector from desired location to its end?
I have three vectors a, b and c given below. I want to replace all the values of 'a' from my desired location say for example fr...

ungefär ett år ago | 2 answers | 0

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answers

Question

How to arrange a matrix in descending order w.r.t rows?
If we have a large matrix and we want to arrange it in descending order i.e., the largest row shoud come on top, then 2nd larges...

mer än ett år ago | 2 answers | 0

2

answers

Question

How to find the vector b if we know the RMSE?
If we have two vectors given by: a=[3,6,8,20,35,45]; b=[3.0343, 6.2725, 8.5846, 18.3781, 34.2025, 44.9699]; Then its Mean Squ...

mer än ett år ago | 2 answers | 0

2

answers

Question

How to replace all for-loops ?
I had posted a function here for vectorization. Now this is the same function and even I tried myself to replace all for-loops l...

mer än ett år ago | 1 answer | 0

1

answer

Question

How to recover Mat data?
I had saved my worksapce data with the name 'abc'. This had many variables some of which were scalars and some of which were vec...

mer än ett år ago | 1 answer | 0

1

answer

Question

I don't understand why does it give error?
I downloaded the following code from Mathworks site whose URL is : URL: https://www.mathworks.com/matlabcentral/fileexchange/52...

mer än ett år ago | 1 answer | 0

1

answer

Question

How to vectorize this piece of code by replacing all the for-loops?
I want to vectorize the following piece of code so that it becomes fast. But M and N can be only coprime numbers and N < M alway...

mer än ett år ago | 2 answers | 0

2

answers

Question

How to reduce its execution time and why the value of e is a column vector?
I have the following piece of code. clc;clear all; c = 340; f = 3400; d = c/f/2; T = 1; ...

mer än ett år ago | 2 answers | 0

2

answers

Question

how to reduce its computing time?
u=[30 40 50 70]; b=u; [~,C]=size(b); P=C/2; M=10; xo=zeros(1,M); yo=zeros(1,M); zo=zeros(1,M); for k=1:M for i=1:...

mer än ett år ago | 1 answer | 0

1

answer

Question

Why does it give wrong answer?
I took a code from the Mathworks site given below: URL: https://www.mathworks.com/help/phased/ref/rootmusicdoa.html N = 10; d...

mer än ett år ago | 0 answers | 0

0

answers

Question

Why this code gives error on line 47?
I downloaded the code attached from the following URL of Mathworks site: URL: https://www.mathworks.com/matlabcentral/fileexcha...

mer än ett år ago | 1 answer | 0

1

answer

Question

How to reduce its execution time?
I have the following piece of code. It works but takes time. How can we reduce its time to a very minimum value? u=[1 3 5 7 20 ...

mer än ett år ago | 2 answers | 0

2

answers

Question

Same code but different results-very strange?
I asked a question on December 10, 2022 on this forum. The URL of the question is: https://www.mathworks.com/matlabcentral/answ...

mer än ett år ago | 0 answers | 0

0

answers

Question

How to invoke and use GA tool in Matlab R2022b?
I typed optimtool in Matlab R2022b to invoke the GA Tool but its' not there. Can anybody guide me how to invoke and use GA tool ...

mer än ett år ago | 1 answer | 0

1

answer

Question

How to copy data of one or more variables from one Mat file to another Math file?
I have two Mat files namely 2sn20 and 2sn20Vectorized. They have data of different variables. Some of them are scalars and some ...

mer än ett år ago | 2 answers | 0

2

answers

Question

How to vectorize this piece of code and why doesn't e come out to be zero though it must come out to be zero because u and b are equal?
u=[30 50 75 -30 -50 -75]; b=u; Noise=5; M = 6;%Constant1 N = 6;%Constant2 d = 0.5;%Constant3 K = length(u)/2; %Cons...

mer än ett år ago | 2 answers | 0

2

answers

Question

Why this gives error?
I downloaded the attached codes " hPSO1.m", and "hPSOoptions.m" and tried to run it with my fitness function"myfitness.m" (also...

mer än ett år ago | 1 answer | 0

1

answer

Question

Vector form of for loop?
I have a piece of code that works fine. But it has a for loop as below: M=5; N=10; abc=0.0; for m1=1:M*N abc=abc+(abs(yo(...

mer än ett år ago | 1 answer | 0

1

answer

Question

All is correct but this code gives error?
I downloaded a file from the Mathworks file exchange and tried to run it, but it was giving error. Then I commented the function...

mer än ett år ago | 1 answer | 0

1

answer

Question

Why does histogram gives issues? I rephrased my question
I have the following set of data: fitness1=rand(100,1)*1e-7; fitness2=rand(100,1)*1e-5; fitness3=rand(100,1)*1e-3; Each set ...

mer än ett år ago | 2 answers | 0

2

answers

Question

How to reduce the size of legend in a fig file?
I have a MATLAB figure "abc.fig". The size of the legend is very large and has covered the graphs. I want to reduce its size and...

mer än ett år ago | 1 answer | 0

1

answer

Question

Can we convert a jpg or png image into a fig file via Matlab?
If we have a *.jpg or *.png image and we want to convert it to *.fig image using MATLAB code, how will we do it?

mer än ett år ago | 1 answer | 0

1

answer

Question

How to draw CRLB (Cramer Rao Lower Bound) for RMSE vs Noise?
I have the following estimation of RMSE for Noise varying from 10 to 40. How to draw its CRLB graph? RMSE=[0.1252 0.0914 ...

mer än ett år ago | 0 answers | 0

0

answers

Question

Why this piece of code gives error?
The following piece of code gives error: Positions=rand(30,3); fobj=@fun4sn0; for i=1:size(Positions,1) Fit(i) = fobj(Po...

mer än ett år ago | 1 answer | 0

1

answer

Question

How to extract coordinate values from a graph in Matlab
I have a graph in a png picture and I want to extract the coordinates from this graph and then I want to draw it by my self in M...

mer än ett år ago | 1 answer | 0

1

answer

Question

I want arrays of one and two but this code doesn't do it
its deleted

mer än ett år ago | 1 answer | 0

1

answer

Question

MSE and RMSE of vector and Matrix
I have a vector u=[-30 0 41.721]; and a matrix two=rand(100,3); I want to find the error between the two, square of that error, ...

mer än ett år ago | 1 answer | 0

1

answer

Question

How to remove the AWGN noise from data?
Let's say we have a vector data Uo=[20 30 40 50]; If we add AWGN noise to it, it becomes data U i.e., U=awgn(Uo,30); Now we s...

mer än ett år ago | 2 answers | 0

2

answers