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41 total contributions since 2015

I am Sadiq Akbar, a keen learner in Matlab

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Question

dividing a diagonal matrix into same and different diagonal elements
I have a diagonal matrix as: V = [ 0.0001 0 0 0 0; 0 0.0001 0 0 0; ...

8 hours ago | 1 answer | 0

### 1

Question

Why do these two codes give different covariance matrices?
1st code: S =[ 0.6661 - 0.7458i 0.4210 - 0.9071i 1.0000 + 0.0000i;-0.9127 + 0.4086i -0.8429 + 0.5381i 1.0000 + 0.0000i;1...

12 days ago | 1 answer | 0

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Question

Why does this code give error?
clear all close all N=100; fc=1.0e9; fs=20*fc; w=2*pi*fc/fs; n=0:N-1; s=sqrt(1.0)*exp(i*w*n); wn=sqrt(0.1/2)*(ra...

13 days ago | 1 answer | 0

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Question

Why this code gives error?
clear all close all N=1001; f1=1.0000e9; f2=1.0200e9; fs=4*f1; w1=2*pi*f1/fs; ...

14 days ago | 4 answers | 0

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Question

How to form covariance matrix of this?
I have a complex matrix as: S = 0.6661 - 0.7458i 0.4210 - 0.9071i 1.0000 + 0.0000i -0.9127 + 0.4086i -0.8429 + 0....

16 days ago | 0 answers | 0

### 0

Question

How to install a Matlab package offline?????
I have downloaded the following Matlab packages from Mathworks site. 1.Matlab support package for arduino 2-Simulink support p...

21 days ago | 1 answer | 0

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Question

Why the result of SQP algorithm varies each time when we change the starting point xo?
I have this code for running the SQP algorithm which is as follows: OPTIONS = optimoptions('fmincon','Algorithm','sqp','Display...

22 days ago | 1 answer | 0

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Question

Why each time algorithm "interior point" is shown in output even if I use different algorithm?
My fitness function is as below: function out=myfitness(b) u = [1 2 3 4]; out1 = u-b; out = sum(out1.^2,2...

25 days ago | 1 answer | 0

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Question

How to convert this C++ code into Matlab or How can I run this into Matlab
The following is a C++ code of CRO. How can we convert this into Matlab code or how can we run it in Matlab? #include "CRO.h" ...

2 months ago | 1 answer | 0

### 1

Question

How to write a code for the following?
I have two vectors u=[u1 u2 u3 u4]=[1 2 3 4]; and b=[b1 b2 b3 b4]=[1 2 3 4]; For M=4 and N=3, I want a to get a row vect...

2 months ago | 0 answers | 0

### 0

Question

how to plot it?
I have the following code. I want a plot between var1 vs e where var1 is along x-axis and ranges from 0 to 10. th=pi/180; b=[v...

3 months ago | 1 answer | 0

### 1

Question

Error in entropy function
I use the entropy function given belwo for my data, but Matlab gives me an error. e=entropy(x,'shannon') Matlab gives me this...

7 months ago | 1 answer | 0

### 1

Question

How to put a preview figure window in a main figure window
I have a code that gives me the plot of my data. I want to put the same plot figure as a preview in top left corner of the same ...

7 months ago | 1 answer | 0

### 1

Question

how to make intervals in a bar graph
Suppose I have some people and they are of different weight, e.g. weight in Kq: 40-45 45-50 50-55 55-60 60-65 No. ...

7 months ago | 2 answers | 0

### 2

Question

how to get a cdf plot of my data
I have run Flower Pollination Algorithm 100 times and have got readings of fitness values. The values of my fitness are as follo...

7 months ago | 1 answer | 0

### 1

Question

How to overwrite labels and data in an excel file?
If I have an Excel file having labels in columns A1,B1,C1,D1,E1,F1,G1,H1,I1 and J1. Below the labels are numeric data. Now if I ...

7 months ago | 1 answer | 0

### 1

Question

How to export a figure into MS Word?
If I have 8 figures opened in Matlab. How can I export these figures into an MS Word document?

7 months ago | 1 answer | 0

### 1

Question

how to know the dimension of a figure window and then draw my own according to same dimension
If I have a figure window which is open. How can I know its dimesnion? I mean how can I know its size (length and width)? Once I...

7 months ago | 1 answer | 0

### 1

Question

how to arrange vectors in descending order?
I have 100 vectors of size 100x8 each as is given in the attachment. I want to arrange them in descending order row-wise only.i....

7 months ago | 2 answers | 0

### 2

Question

How to draw a histogram of my data?
I have two vectors a and b, where they are as follows: b=1:100; a=1e-18:1e-15; I want to draw a histogram of them such that a...

7 months ago | 1 answer | 0

### 1

Question

MSE and RMSE of a matrix
I have a reference vector u of size 1x8. In this matrix the 1st four columns are voltage readings and last four columns are curr...

8 months ago | 1 answer | 0

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Question

How to sort a vector according to another vector
I have a desired vector u of order 1x6 i.e. one row and 6 columns. Likewise I generate another random vector of same size 1x6. T...

8 months ago | 1 answer | 0

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Question

How to get a random vector whose elements arrangement is the same as that of my desired vector
If I have a desired vector u=[3 1 5 105 155 50]. Now I want to genrate 10 random vectors of the same size as above u. Then I w...

8 months ago | 2 answers | 0

### 2

Question

elements order is not same in estimated vector as in my desired vector
I have an m file that is as follows: half_1st = 1:3; %half_1st = 1:3; half_2nd = 4:6; %half_2nd = 4:6; dim...

8 months ago | 0 answers | 0

### 0

Question

problem with m file
I have written the following m file, but gives me error instead of plotting the data. The error I get is:Error using plot Vecto...

8 months ago | 1 answer | 0

### 1

Question

To store Output of a user defined function in an array
Suppose I have a user defined function which has only one input "b" and one output argument "e", e.g. function e=user_defined(b...

8 months ago | 1 answer | 0

### 1

Question

How to present our data in different graphs
(A) I have a desired vector u=[1 2 3 4]. I used an algorithm and that algorithm estimated a best solution for my desired vector...

1 year ago | 0 answers | 0

### 0

Question

My Excel writing program does not stop
I have two arrays of vextors V1 and V2. Array V1 has 100 row vectos and array V2 has 100 row vectors. i,e, each vector is a row ...

1 year ago | 1 answer | 0

### 1

Question

How to write a matlab program to arrange my workspace data?
I have a desired vector u=[0.5 1 2 40 70 90]. I give this vector to a metaheuristic algorithm and I run the algorithm. The algo...

1 year ago | 1 answer | 0

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Question

How to arrange a vector elements on the pattern of a reference vector
I have a reference vector u=[0.5 1 1.5 0.6981 1.3962 1.5707]. I want to estimate this vector via an algorithm. For that I am...

1 year ago | 0 answers | 0