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KSSV


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8,841 total contributions since 2011

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

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Answered
How can I draw and descretize(into grids or mesh) this domain in 2D.
You can use transfinite interpolation. Refer the below examples: https://in.mathworks.com/matlabcentral/fileexchange/40618-gri...

2 days ago | 1

| accepted

Answered
Find min and max values in a constant interval.
If A is your complete matrix. t = A(:,1) ; % this is seconds column iwant = A(t==30,:) ; % extract chunk which is for 30 ...

2 days ago | 0

Answered
How to fix the Dot indexing is not supported for variables of this type error?
Replace (i.j) with (i,j). There is . (dot) between i and j; replace it with comma. it seems a typo error.

3 days ago | 1

Answered
Plot3 to import data from Excel
T = xlsread('calculations.xlsx') ; plot(T(:,1),T(:,2:end))

3 days ago | 0

Answered
How to save the values of (x,C) in file 1 and (x,y) in file 2 to plot them in file 3.. the description in the code below
% file 1 clc; clear; x=[1 3 2 5 8] ; C = zeros(10,length(x)) ; for i=1:10 C(i,:)=i*x; end writematrix(C,'file1.txt...

3 days ago | 0

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Answered
how to find specific value in a table?
idx = hsl.clusternya==3 ; % logical indexing T(idx,:)

3 days ago | 1

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Answered
If statement to target certain area of f(i,j)?
% Subroutine function k=X(x,y,dx) if (x <=5 && y <=2) || (x >= 10 && y >= 10) constant = 85; % beta else constant ...

3 days ago | 0

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Answered
help --- symbolic expression or function
syms x y z one = 3*x +2*y - z == 10; two = -x + 3*y + 2*z == 5; three = x -y - z == -1 ; s = solve({one,two,three},x,y,z) ; ...

3 days ago | 1

Answered
How to add (combine) together two structures with the same fields?
clc; clear ; s1.name = 'Tom' ; s1.sex = 'm'; s1.age = 25 ; s2.name = 'Harry' ; s2.sex = 'f'; s2.age = 26 ; % Structur...

3 days ago | 0

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Answered
I'm plotting a solution to a PDE using surf but the graph turns out wrong?
MAy be you are looking for this: n=1:10 ; tRange = 0:0.05:1; [n,t] = meshgrid(n,tRange); u = (4./(n.^3*pi^3)+(4...

3 days ago | 0

Answered
Adding elements in column vectors
MAke a and b of equal dimension using linspace. and then add. Read about linspace.,

4 days ago | 0

Answered
Plot data with date and time
thedates = datetime(datestr((x))); y = str2double(y) ; plot(thedates,y)

4 days ago | 1

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Answered
load a folder of excel files
excelFiles = dir('*.xlsx') ; N = length(excelFiles) ; for i = 1:N file = excelFiles(i).name ; T = readtable(file) ;...

4 days ago | 1

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Answered
Calculate differences between all values elements in a vector and increase max diff by one
A = [2 3 1 4] ; B =[4 4 2 4]; AB = B-A ; [val,idx] = max(AB) ; A(idx) = A(idx)+1

4 days ago | 1

Answered
merge duplicate entries and take average associated columns
A=[1 1 1 2 2 3 3 3 4 4 4 2 2 2 3 ]; % B = [ 1 2 3 4 2 3] B= A(diff([0 A])~=0)

4 days ago | 0

Answered
discrete line plot in matlab 2015?
Replace those values with NaN and plot: A =[1 0.122 0.05 0.093 0.113 6 0.18 0.071 0.135 0.168 10 NaN NaN NaN NaN ...

4 days ago | 0

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Answered
Hello everyone, how to record and save the coordinates of each image centroid point in a matrix in 'for loop'. Thank you very much. The code is as follows:
centroids = cell(numberOfFrames ,1) ; for i = 1:numberOfFrames centroids{i} = s.Centroid; end

4 days ago | 0

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Answered
my code is not working
Increase the marker size and see. scatter3(xyz(:,1),xyz(:,3),xyz(:,2),10000,rgb,'.');

4 days ago | 0

Answered
How to omit zeros while using mean at varfun?
Convert zero's to NaN and use nanmean.

4 days ago | 0

Answered
Apply image position data to an image (Excel data)
You can check that visually by plotting the dots on the image. I = imread(myimage) ; T = readtable(myexcelfile) ; % assumi...

4 days ago | 0

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Answered
Extract data from a cell contains of alphabet and number
idx = loc+1 ; iwant = cell2mat(C{idx})

4 days ago | 0

Answered
how to concatenate multiple columns in one column of cell array?
files = dir('*.txt') ; % you are in the folder of files N = length(files) ; T = cell(N,1); for i = 1:N filename ...

4 days ago | 0

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Answered
Accessing multiple columns in cell array
A = cat(3,Data{:}) ; % convert cell array to 3D matrix m = cell2mat(mean(A(:,end,:))) % mean of last column

5 days ago | 0

Answered
how to write 2 summations
thesum = 0 ; for i = 1:p for j = 1:m thesum = thesum+n(i,j) ; end end

5 days ago | 0

Answered
Is there any way I can access all the surface coordinates of an imported .stl file?
gm = importGeometry(myfile); gm Check the LHS gm it has all the data you want.

5 days ago | 0

Answered
Geoplot with more data than Lat and Lon
Read about scatter. Have a look on mapping toolbox. https://in.mathworks.com/products/mapping.html

5 days ago | 0

Answered
How to find position (indices) of minimum element on each page of 4 dimensional matrix?
You can use the function min to achieve this. Read about it. % demo data using 3D matrix A(:,:,1) = [2 4; -2 1]; A(:,:,2) =...

5 days ago | 0

Answered
Plot concentric circle on an image
I = imread('peppers.png') ; [m,n,p] = size(I) ; C = round([n m]/2) ; % center of circle th = linspace(0,2*pi) ; imshow...

5 days ago | 2

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Answered
read only range of values from csv
You can read the entire data and then pick your required using indexing. data = csvread(myfile) ; % assuming file has single...

5 days ago | 0

Answered
I am looking for drawingmesh
You must get that function with the below book: https://www.springer.com/us/book/9789400789555

5 days ago | 0

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