KSSV

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7,743 total contributions since 2011

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

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Answered
Finding the indices of the maximum of a matrix for plotting
load('x.mat') load('y.mat') load('m.mat') [X,Y] = meshgrid(x,y) ; Z = m ; % Make Z equal to size of X, Y Z(1,:) = []; ...

10 hours ago | 1

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Answered
convert 262144x1 into 1x262144.
If A is your array..just transpose it. iwant = A' Read about transpose.

21 hours ago | 0

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Answered
Surf(x, y, z) with a colormap that is only two colours
You can try something like this x = linspace(-20,20,2400); fz = exp(-x.^2./0.2).*cos(5.*x); [X, Y] = meshgrid(x, x); z = exp...

23 hours ago | 0

Answered
I keep getting input error
You have to use Ohm's law instead of the unknown variable current. Use fprintf instead disp. %r is r1 33 r2 47 = 80 % xl1 i...

1 day ago | 0

Answered
How to add an extra for loop
newTime = cell(1,4); % cell because, we are not sure of dimensions in each case R = [7 11 ; 56 59 ; 99 106 ; 133 143 ] ; % ...

1 day ago | 0

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Answered
Tidal Harmonic analysis, by finding the amplitude and the phase of each tidal component
Refer these file exchange packages. https://www.eoas.ubc.ca/~rich/ https://in.mathworks.com/matlabcentral/fileexchange/46523...

1 day ago | 0

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Answered
convert 128x2 char to 1x64 char
If val is your char array..you can try something like: iwant = strcat(val(1:2:end),val(2:2:end))

1 day ago | 0

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Answered
how sum all element which are the right of diagonal. where row=colom .....i have done this much but confuse in further operation
Read about triu. https://in.mathworks.com/help/matlab/ref/triu.html If A is your matrix, use: iwant = sum(sum(triu(A)))

1 day ago | 0

Answered
Plotting coordinate points using plot()
rng (7) n = 30; center = [0 0]; radius = 1; eps = 0.1; r = eps*rand(n,1) + radius -eps/2; A = [center(1) + r.*cos(2*pi*(1:...

1 day ago | 0

Answered
Unable to perform assignment because the size of the left side is 1-by-7056 and the size of the right side is 1-by-213444
The error is clear..you have initiliazed a array with smaller dimension and you are trying to save more elements in the array. ...

1 day ago | 0

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Answered
How to make a list of appearance
Let str be your list of animals. xbins = unique(str); [counts,centres] = hist(str,xbins); R = [centres counts']

3 days ago | 0

Answered
How to add all the curves in a single figure?
figure(4) hold on plot(Out(:,1),time); plot(Out(:,10),time); plot(Out(:,20),time); set(gca, 'ydir', 'reverse'); xlabel('Rp...

3 days ago | 0

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Answered
Implementation of formula in a single line.
x = linspace(-4,+4,100) ; z = x ; L = 2 ; A = 1.6732; z(x<0) = L*A*exp(x(x<0)-1) ; plot(x,z)

3 days ago | 0

Answered
3d plot with different length of x and y
surf, pcolor is your function. You can plot using that. x = 1:21 ; y = 1:101 ; Z = rand(21,101) ; [X,Y] = meshgrid(x,y...

3 days ago | 0

Answered
How to connect two displays?
clc;clear C1 = input('Please enter a code to break: ' , 's'); if length(C1) ~= 6 disp('Decoy message: Not a six-digit num...

3 days ago | 0

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Answered
How do I add a colormap to a series of 3D lines?
Read about waterfall.

3 days ago | 0

Answered
Increment change For loop
val = [1:2:19,23:4:200] ; N = length(val) ; iwant = zeros(1,N) ; for i = 1:N iwant(i) = val(i) % In case you want to...

3 days ago | 1

Answered
find row in specifics value
[val,idx] = max(hasildk,[],2)

4 days ago | 0

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Answered
Possible to contour at specific z planes to give the x,y coords?
You can use contour to do this. You need to specify the level as 0 to get your coordinates (x,y) where Z = 0. C = contour(X,Y,...

4 days ago | 0

Answered
How to draw a position vector on a 3D plot
You can use the file exchange: https://in.mathworks.com/matlabcentral/fileexchange/278-arrow You can also use annotation h=a...

4 days ago | 0

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Answered
How can I display the sum of the digits of a number entered by a user?
n = 3434; digits = dec2base(N,10) - '0' ; iwant = sum(digits)

5 days ago | 0

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convert a 3D matrix to a 2D matrix
iwant = X2 ; iwant(1:2:end,:) = X2(1:3,:) ; iwant(2:2:end,:) = X2(4:end,:) ;

5 days ago | 0

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Reshape a multidimensional matrix
iwant = reshape(144,[]) ; Wont this work for you?

5 days ago | 0

Answered
How to plot coast and fill the land with gray without m_map
To fill the land use patch/ area/ fill. Read about those functions. To simply plot the coastline use plot.

5 days ago | 0

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Answered
error using cross (A and B must have at least one dimension of length 3.)
https://in.mathworks.com/matlabcentral/fileexchange/55021-n-dimensional-cross-product

5 days ago | 0

Answered
Error vertcat not using vertcat
Your matrix is 10*10 Kx = [407 -169 0 0 0 0 0 0 0 0; -169 331 -162 0 0 0 0 0 0 0; -162 320 -158 0 0 0 0 0 0; % <-----...

5 days ago | 0

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Answered
need help convertig 10 min data interval to 1 minute data interval
You need to do interpolation. Read about interp1 https://in.mathworks.com/help/matlab/ref/interp1.html

5 days ago | 0

Answered
How to change certain values in a 3 layer matrix and fill in another matrix?
Let NDVI be your 7971*7851*3 matrix. R = NDVI(:,:,1) ; G = NDVI(:,:,2) ; B = NDVI(:,:,3) ; % replace values % repalce each ...

6 days ago | 0

Answered
A loop to extract and plot data from a table
Let A be your 10*11 data. x = 0:1:10 ; plot(x,A)

7 days ago | 0

Answered
Selecting only half a row of an array
Read about MATLAB array indexing, instead of asking very simple basic questions. If a is an narray of size 1x5. a(1:2) % gi...

7 days ago | 0

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