KSSV

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8,304 total contributions since 2011

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

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Answered
Matlab interpolation between two surfaces
Have a look on slice.

12 hours ago | 0

Answered
solve non linear equations
Replace the first line: lear all with clear all Also terminate the output of each line using ;

13 hours ago | 0

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Concatenate arrays in MATLAB and Change Column name of Table
t = [10 20 30; 40 50 60]; A = t(:,1) ; B = t(:,2) ; C = t(:,3) ; T = table(A,B,C)

14 hours ago | 0

Answered
Function problem in loop
function out=fns1(X) x1=X(:,1); x2=X(:,2); x3=X(:,3); x4=X(:,4); x5=X(:,5); x6=X(:,6); x7=X(:,7); x8=X(:,8); x9=X(:,9);...

14 hours ago | 1

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How to set Reallyl Basic iterative sum
% f = n*sin(n*x) ; thesum = 0 ; for n = 1:10 thesum = thesum+n*sin(n*x); end

14 hours ago | 0

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Answered
How to make a file size smaller when export as a netcdf?
Convert the variables to single and then write to nc file. Read about Single.

14 hours ago | 0

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Contour plot for the external data
simData = importdata('eField_sample.txt'); % import data x_val = simData.data(:,1); % x-coordinate y_val = simData.data(:,2); ...

15 hours ago | 0

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Answered
Create equations in a loop
% K*t = F t = K\F ; Refer more: https://in.mathworks.com/help/matlab/ref/mldivide.html

17 hours ago | 1

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Correlation of rows of matrix B with rows of reference matrix A
[r,c]=size(matA); x = zeros(length(r),1) ; for i=1:r x(i) = corr(matA(i,:)',matB(i,:)') ; end [val,idx] = max(x)

17 hours ago | 0

Answered
Hello everyone, I would like to ask a question. How to plot only the (-pi:+pi) range of the following curve.
load jizuobiao2.mat THETA12 = linspace(-pi,+pi,length(RHO12)) ; f2 = fit(THETA12,RHO12,'smoothingspline','SmoothingParam',0.99...

2 days ago | 0

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Answered
Calculate the Gradient of a given function using the forward and central quotients.
function f1x = vordiff(f,x,h,y,z) %Vorwärtsdifferenzenquotienten syms x y z ; f = (4*x+3*y+2*z)*e^(-3*x^2)-4*y^2-8*x*y-2*z^2 ...

3 days ago | 0

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How to select a range of data in matrix
Let A be your column matrix. idx = A <= 44.1 ; % get indices using logical indexing iwant = A(idx) ; % Extract those elemen...

3 days ago | 1

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Answered
Loop for contour a 3 inputs function
x = linspace(-1,1) ; y = linspace(-1,1) ; z = linspace(-1,1) ; [x,y,z] = meshgrid(x,y,z) ; s = x.^2+2*x.*y.*z+y.^3+y.^...

4 days ago | 1

Answered
How can i use symbolic variables which were created as a vector?
What you have shown will not work and it is meaning less. You have to use: x = [1 2 3 4 5 6 7 8 9]; Where veer you have x1, x...

4 days ago | 0

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How can I plot 4-dimensional plot?
Have a look on slice. T = readtable('Book1.xlsx') ; l1 = T.l1 ; l2 = T.l2 ; l3 = T.l3 ; Lz = T.Lz ; nx = length(un...

4 days ago | 0

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I have .mat file containing lat, lon, depth data as double variables. How can I generate cross-sections across different lines from its mesh 3D plot?
Read about slice. https://in.mathworks.com/help/matlab/ref/slice.html

4 days ago | 0

Answered
How to identify biggest location plot of random plotting
You need to sort the distance and pick the required number of points you want, to get the points from A close to BS. n = 50; ...

4 days ago | 0

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How to generate video file from animated plot in Matlab?
It is because, you are writitng only the last frame into video...you need to keep the video writer code into a loop. x = linsp...

4 days ago | 0

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Answered
Creating a matrix of all possible combinations given multiple vectors
REad about perms and nchoosek.

4 days ago | 0

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How can we generate random numbers between two negative values.
a = -5 ; b = -1.670000000000000 ; r = (b-a).*rand(1000,1) + a;

5 days ago | 2

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Answered
Find the under condition min or max of a row vector
a = [ 1 3 5 2 5 7 8 3 6 4 9 ] ; a(a<3) = NaN ; % Replace values <3 to NaN [val,idx] = min(a)

5 days ago | 0

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Answered
How to use for loop
user_input = fprintf('%.1f\n', input('Enter a positive real number')); count = 0 ; while count <= 10 if user_input >= 0 ...

5 days ago | 1

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How to make a color sphere as colorbar in 3D image
[X,Y,Z] = sphere; surf(X,Y,Z) colorbar

5 days ago | 0

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x and fx matrix
x = linspace(0,11,10) ; f = 2*x ; iwant = [x;f]

5 days ago | 0

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Answered
I am trying to plot x and y with y being the only unknown but I don’t what is wrong in my code please help
Your x is an array Where as theta is only a scalar. You have to make theta and x both arrays of same size. You need to use...

5 days ago | 0

Answered
Open specific format file outside MATLAB ?
Right click on the C file...click on the "open with" and the choose "choose default program", after this selct your visula studi...

5 days ago | 0

Answered
Trim only edge NaN values
X = [NaN, NaN, 2, 5, 1, 6, NaN, 1, NaN, NaN]; A = isnan(X) ; idx = find(A & diff([0 A]) == 1 & diff([A 0]) == 0) ; idx = [...

5 days ago | 0

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Answered
Hello everyone, how to write the code to calculate the similarity coefficient of two curves?Another problem is that when fitting a curve, the interval of a curve x is [-3,3], and it will exceed this interval when fitting a curve. I don’t know where t
load jizuobiao1.mat RHO11 = XX1 ; THETA11 = linspace(-pi,+pi,length(RHO11))' ; f1= fit(THETA11,RHO11,'smoothingspline','Smo...

5 days ago | 0

Answered
Abaqus input file edit as required by user
Refer this: https://in.mathworks.com/matlabcentral/answers/307258-extract-nodes-and-elements-from-abaqus-input-file-to-matlab ...

6 days ago | 0

Answered
Get all unique combinations from cell array for use as functional arguments
A 2*2 matrix means there are four elements i.e. four global indices. idx = 1:4 ; c = nchoosek(idx,2) C has the possible comb...

8 days ago | 0

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