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KSSV


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7.253 total contributions since 2011

https://sites.google.com/site/kolukulasivasrinivas/
Professional Interests: Mathematical Computing

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Answered
Substitute for eval function
It is not adivsed to use eval. You can reshape your data into what you want. Check below: DATA_FC = rand(1001,13428) ; % rando...

alrededor de 2 horas ago | 0

Answered
How do I import multiple .dat files from a folder in Matlab?
datFiles = dir("*.dat"); N = length(datFiles) ; % loop for each file for i = 1:N thisFile = datFiles(i).name ; ...

alrededor de 4 horas ago | 0

Answered
About TRMM Data and extraction it for a particular area?
Refer this link: <https://in.mathworks.com/matlabcentral/answers/407463-how-to-subset-the-matrix-array-with-shape-file#accepted_...

alrededor de 12 horas ago | 0

Answered
Visualizing values in a matrix
Read about spy clc; clear all ; m = 10 ; A = zeros(m); % introduce random ones id = randperm(m*m,20) ; A(id) = 1 ; [...

alrededor de 20 horas ago | 0

| accepted

Answered
How to became my Tridiagonal matrix
Read about diag. iwant = diag(1:5)+diag(1:4,-1)+diag(1:4,1) ;

1 día ago | 0

Answered
How to insert arrows at the middle of each of the parallel lines
Why annotation for this? You can use quiver. Play around with the below code. clc; clear all ; p = 0.01:.05:1; x =[0;1] ; ...

1 día ago | 0

Answered
Solving System of Equations - Complex
Try this: kp1 = 2; kp2 = 3; p = 1; syms xco2 xco xo2 xo eqns = [(xo2^(1/2)* p^(1/2)*xco)/xco2 == kp1, (x...

1 día ago | 1

| accepted

Answered
What is the meaning of the Error Mesage "Subscript indices must either be real positive integers or logicals."
In MATLAB the indices of an array always should be positive integers. The indices can be 0,1 if it is og logical type. Example...

1 día ago | 0

Answered
coordinates from in the image
Read about ginput, getpts. You can get the points by clocking with mouse, the points you get will be w.r.t to the indices/ dimen...

1 día ago | 0

Answered
replace [ ] in an array with 0's
You run on each column of a table..

1 día ago | 0

Answered
How to get the sum of the series: 1 + 1/2 + 1/3 + 1/4 + ... + 1/n?
n = 10^5 ; s = 0 ; i = 0 ; while s <= 3 % fix the sum here i = i+1 ; s = s+1/i ; end i

1 día ago | 0

Answered
replace [ ] in an array with 0's
You can get all the emtpy functions in a cell using cellfun .. idx = cellfun(@isempty,C) ; % get empty cells in a cell array C ...

1 día ago | 1

Answered
transform a matrix with polar coordinates into a matrix with cartesian coordinates
Read about pol2cart. https://in.mathworks.com/help/matlab/ref/pol2cart.html

2 días ago | 1

Answered
creating combinations in the rows of two large multi-dimensional (N-by-M) matrices
Read about nchoosek, combnk. combnk will give you indices, and using these indices you can pick the rows.

2 días ago | 0

Answered
How to find radius of curvature?
https://in.mathworks.com/matlabcentral/fileexchange/69452-curvature-of-a-2d-or-3d-curve

3 días ago | 0

Answered
Merge specific text files
% to read files starting with M1 txtFiles = dir("M1*.txt") ; N = length(txtFiles) ; A = zeros(N,4) ; for i = 1:N a =...

3 días ago | 0

Answered
Current carrying Capability Program
The problem is very simple and straight forward. If I have a formula d = a*b/c with a, b, c defined to evaluate d, we do: a =...

3 días ago | 0

Answered
What is the equivalent to MATHCAD's Given-Find
You can try this: https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections?focused=5165138&tab=function

3 días ago | 0

Answered
Plotting a an equation as function of radius .
t = linspace(pi/2,3*pi/2) ; k = 10 ; r0 = 1000 ; r = r0*exp(t/k) ; % on solving the give equation for r plot(t,r)

5 días ago | 0

Answered
Count number of values within a range in tall array per column and assign count to new matrix
You can achieve this using histogram. Read about histcounts.

6 días ago | 1

Answered
diameter of image (1024x1024 logical value)
Let A be your logical of 1024*1024 [y,x] = find(A) ; % get all th points with 1 C = [mean(x) mean(y)] ; % this gives ...

6 días ago | 1

Answered
Order of filenames is wrong
Use this fileexchange function: https://in.mathworks.com/matlabcentral/fileexchange/47434-natural-order-filename-sort

6 días ago | 1

Answered
Plotting with gaps in x-axis data
It looks like you have a non continuous x-axis data. This problem occurs when you have such data and try to plot. Make x-axis ...

6 días ago | 0

Answered
write a matlab code that generate a random number, then divide the generated number by 4 if its even number and greater than 100.
To generate randomnumber read about randi. To check whether even or not use mod. Read about mod. To check whether greater or...

6 días ago | 0

Answered
A year containing a date or not
Read about the function calendar. https://in.mathworks.com/help/matlab/ref/calendar.html Fromhere you can pick the required co...

6 días ago | 0

Answered
i have a variable in my workspace and i dont know its name directly
If you have variables in the workspace....to get the variable names use: S = whose ; names = {S.name} ; Use strcmp to find ...

6 días ago | 0

Answered
How to plot fft outputs in frequency domain?
You read here....https://in.mathworks.com/help/matlab/ref/fft.html You have to generate the frequency values based on the sampl...

6 días ago | 1

| accepted

Answered
How to generate one random integer
As you cannot fix infinity, decide a huge/large number ..say 10^5 and use: x = randi([-10^5 10^5],1)

6 días ago | 1

| accepted

Answered
How to calculate the derivative and deviation of a series of data
To find deviation i.e standard deviation use std. To find derivative ..if you have time step use... d = diff(data)/dt ; Alo...

7 días ago | 0

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