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KSSV


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7,414 total contributions since 2011

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

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Answered
How do I call to function from other function?
You need to save both the function files in the same folder and yes call the other function in the required function. It is very...

1 hour ago | 0

Answered
How to set different marker for some different values?
fmt = {'*','o','^','.','+','x','s','p','h'}; % different markers x = 1:9 ; y = rand(size(x)) ; figure hold on for i = 1:...

1 hour ago | 0

Answered
Sum the values of one column based on another column in Table
Let T be your table. R = T.Range ; val = 862.33 ; count = nnz(abs(R-val)<=10^-5)

5 hours ago | 0

Answered
Recover matrix Z from XZX', Z es symmetric and n-by-n, while X is k-by-n where n>>k
Does this match your criteria? k = 8 ; n = 5 ; % create dummy data X = rand(n,k) ; Z = rand(n) ; Z = Z+Z' ; % make ...

9 hours ago | 0

Answered
How to find the power of a matrix?
A=A/10^5 ; A = A.^2 ;

1 day ago | 0

Answered
How to find convolution of three functions.
Read about conv2. s1 = conv2(conv2(f1,f2),f3) s2 = conv2(conv2(f2,f3),f1) s3 = conv2(conv2(f1,f3),f2) All the abve three a...

1 day ago | 0

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Answered
Error using sym/subsindex
Initialize the cell first. Q =cell(length(a),length(ttt)) ; % initialize USe this in the loop. Q{i,j} = %% your formul...

2 days ago | 0

Answered
How to cut area or some part of image ?
How about using this? https://www.mathworks.com/help/images/ref/imfreehand.html

2 days ago | 0

Answered
How to avoid patch color being included in legend ?
clc; clear all; close all; x = linspace(-10,10,200); y = sin(4*x); y1 = sin(x); figure; hold on patch([2 5 5 2], [[1 1]...

2 days ago | 1

Answered
Change resolution of .xyz file in matlab
You need to interpolate your data. Read about interp2. Also if you have Z data, you can use imresize. Read about this as well....

2 days ago | 0

Answered
Create stl. file with [F,V,N] data
USe this: https://www.mathworks.com/help/matlab/ref/stlwrite.html#d120e1182467

2 days ago | 0

Answered
Index exceeds the number of arrays
Try to clear the variables, before using your code. There is no error in your code. It should work. clc; clear all; A = 4; W...

2 days ago | 0

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Answered
Adding Number using for loop
Let A be your n*2 array. t = A(:,1) ; s = A(:,2) ; [C,ia,ib] = unique(t) ; N = length(C) ; iwant = zeros(N,1) ; for ...

3 days ago | 0

Answered
peak Value of a spike in graph at a particular time
You reshape your array and use min and max. Read about reshape, min, max.

3 days ago | 0

Answered
dynamic allocation of arrays
You can initiate it to a cell. resultPolygon = cell(720,1); for i = 1:720 newShaper = homogeneousTransformMatrix(phi(i))...

3 days ago | 0

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Answered
How can I save multiple matrix and index them?
txtFiles = dir("*.txt") ; N = length(txtFiles) ; themax = zeros(N,1) ; % loop for each file for i = 1:N data = import...

3 days ago | 0

Answered
Crop out a section of the image in imshow, how?
Read about imcrop. Let I be your image. rect = [234 355 (1678-234) (764-355)] iwant = imcrop(I,rect) imshow(iwant)

3 days ago | 0

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Answered
Plot multiples time series
Let A be your 365*40 data. Multiple options. plot(A) The above options plots 40 curves in one graph. It will be confusing. ...

3 days ago | 0

Answered
Removing Missing Data from Corresponding Matrix
POCtotal(index,:)=[];

4 days ago | 0

| accepted

Answered
Draw the trail of a moving marker on an animated 2D plot
A = rand(1800,1); B = rand(1800,1); % I'm just using dummy values here but my actual program has similar outputs (1800 x 1 dou...

4 days ago | 1

| accepted

Answered
Adding zeros to matrix
Let A be your 100*100 matrix. B = zeros(300) ; B(1:100,1:100) = A ;

4 days ago | 1

Answered
Obtain the mean angle (circle mean of a file)
num = xlsread(myfile) ; % better use readtable iwant = mean(num,2) ;

4 days ago | 0

Answered
How do I turn of thr grid of a surface but keep the edge line on?
[X,Y] = meshgrid(1:10) ; Z = sqrt(X.^2+Y.^2) ; % plot the outer line X1 = X ; X1(2:end-1,2:end-1) = NaN ; Y1 = Y ; Y1(...

5 days ago | 0

| accepted

Answered
Just want to learn how to better
Read about imread, imshow, title.

5 days ago | 0

Answered
How do I subplot multiple tiles that I divided from a satellite image in one figure?
count = 0 ; for m=1:16 for n=1:16 count = count+1 ; subplot(16,16,count); imshow(tiles{m,n}); ...

5 days ago | 1

Answered
Changing the color of a 3D plot
This command: h = plot( fitresult); You specify a marker/ different color for both the functions. h = plot( fitresult,'b'); ...

5 days ago | 0

Answered
Select points inside a polygon
You can use the previous questions answer..with a slight change while saving the points. clc; clear all ; load("polygon1_x.ma...

5 days ago | 1

Answered
Velocity potential with quiver command
You should use gradient. [u,v] = gradient(StreamFunction) ; quiver(x,y,u,v)

5 days ago | 0

Answered
Plot a box around set of points
This question can be solved from your previous question which was answered. If (x,y) is your point and you want points around ...

5 days ago | 2

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Answered
how can i plot positive magnitude only of a sine wave
% get the index of only positive values idx = DC_Voltage>=0 ; plot(DC_Voltage(idx))

5 days ago | 1

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