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KSSV


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6,130 2011 年以降の合計貢献数

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

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Tell me when count of occurrences in a rolling 7-day range exceeds a certain value.
T = readtable('data.txt') ; S = T.(2) ; on = contains(S,'ON') ; off = contains(S,'OFF') ; % Count ON A = on' ; ii = z...

2日 前 | 0

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Problems with an integral
alpha1 = 1.8; kappa1 = 25; alpha2 = 2.2; kappa2 = 27; syms x z; f = alpha1 * alpha2 * kappa1 * kappa2 * (x-z)^(kappa1-1)...

2日 前 | 0

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Can I add units to the table?
It is not allowed...may be you can use something like this: varNames = {'Name', 'Age_in_Years'} ; varTypes = {'string','do...

2日 前 | 0

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How to store output for each input.
inputNames = {"mat1.mat", "mat2.mat", "mat3.mat"} length(inputNames) for i = 1:length(inputNames) load(inputNames{i}) ...

2日 前 | 0

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Split a matrix into separate matrices and find centroid of each smaller matrix
A = rand(50,2) ; k = 10 ; [r,c] = size(A); nlay = r/k ; out = permute(reshape(A',[c,r/nlay,nlay]),[2,1,3]); % Ge...

2日 前 | 1

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Linear Regression, line of best fit
Read about polyfit https://in.mathworks.com/help/matlab/ref/polyfit.html To fit a line use n=1.

3日 前 | 0

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Creation of 3X3 window
REad this https://in.mathworks.com/matlabcentral/answers/362262-i-have-a-32-32-matrix-i-want-to-take-mean-of-each-4-4-so-that-th...

3日 前 | 0

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How to avoid inf value while feature extracting in Matlab?
Fill this inf's either using fillgaps or fillmissing. REad about those functions. Or, remove them getting the indices of inf usi...

3日 前 | 0

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Read large dat file without intermediate text lines
As the number of text lines are fixed i.e 5. We can take advantage of this. We can skip the text lines and read the numeric data...

3日 前 | 0

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How to plot graph using data from a text file?
Replace y/x in the text file with NaN. A = load('sound.txt') ; x = A(1,2:end) ; y = A(2:end,1) ; Z = A(2:end,2:end) ; ...

3日 前 | 0

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How to read a part of txt file using readtable(''myfile.txt")
Read about textscan. Here you can specify the header lines........get the position of your line fromw hich you want to read........

3日 前 | 0

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How plot contour lines in matlab
Read about contour3. https://in.mathworks.com/help/matlab/ref/contour3.html

3日 前 | 0

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I want to generate random point with Six closest nebulous in cuboid with dimension 100 m
% Random point O = rand(1,3) ; % Six random points with in cubiod of 100 m L = 100 ; n = 6 ; P = zeros(n,3) ; for i = 1...

4日 前 | 0

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placing 3 image pixels in an array from a large image vector
YOu know ths sub-indices (i,j) for the required pixels. Get the index for it and arrange in a vector. idx = sub2ind(size(I),...

4日 前 | 0

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4D plot in Matlab
[X,Y,Z] = peaks(100) ; surf(X,Y,Z,Z)

4日 前 | 0

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How to find pixels of one cluster that are enclosed by pixels of another cluster?
What you need to use is boundary and inpolygon. You need not to scan through every column. Check the below code. I = imread(...

4日 前 | 0

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How to draw a histogram with different bin colors based on value?
v = [-2, 3, 1, 2, -1, -2] ; x = 1:length(v) ; figure hold on bar(x(v<0),v(v<0),'r') bar(x(v>0),v(v>0),'b')

4日 前 | 1

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Sorting points of image
I = imread('curves.png'); I1 = rgb2gray(I); [y,x] = find(I1) ; imshow(I) hold on plot(x,y,'r') You see the lines are in...

4日 前 | 0

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How do I apply PCA (Principal Component Analysis) on single Channel ECG data?
REshape your signal into matrix of specific duration and use pca

4日 前 | 0

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How to convert a netcdf satellite data into a tiff/geotiff file?
You need to do the following steps: Read the data from netCDF to workspace. To do this read about ncdisp, ncinfo, ncread. Wri...

4日 前 | 0

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How to draw line between specific points?
data = [A ; B] ; plot(data(:,1),data(:,2))

4日 前 | 0

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Sliding a 3X3 window over an image
A = conv2(A,ones(3),'same');

4日 前 | 0

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How to convert the daily into half hourly
t0 = 723181 ; t1= 736329 ; t0 = [datestr(t0) ' 00:00:00'] ; t1 = [datestr(t1) ' 00:00:00'] ; t0 = datetime(t0) ; t1...

4日 前 | 0

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How to create a permutation table on Matlab?
Read about perms. str = 'MATLAB' ; id = 1:length(str) ; % indices ids = perms(id) ; % permuted indices iw...

5日 前 | 0

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Is the .jpg image one-dimensional and two-dimensional?
If you have a RGB image it will be 3D matrix. If you have a gray image it will be 1D matrix. Try converting your image to ...

5日 前 | 0

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y=0 line is added to my plot
data=csvread('deptesttest.csv',1,0); data(data(:,2)==0,:)=[]; dataus=data(:,1).*1e6; % yyaxis left plot(dataus(:,1),data(:,2...

5日 前 | 1

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Help with simple pendulum with moving support
May be this is what you are looking for: https://in.mathworks.com/matlabcentral/fileexchange/32913-response-spectra

5日 前 | 0

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delete matrix in cell
cell_A={[1 1 1] [1 2 3;3 2 1] [4 5 6;7 8 9;1 1 1] [2 2 2;3 3 3] [9 9 9]}; cell_B={[1 1 1] [1 2 3;3 2 1] [9 9 9]}; m =...

5日 前 | 0

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Eliminating matrix row on condition
A = [1 2 0 ; 3 4 0 ; 5 6 7; 8 9 10] A(any(A==0,2),:)=[]

6日 前 | 0

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How to insert the missing number into the cell array?
I=[3 5 6 8 10 11] ; A={[3];[6;8];[];[11]} ; % get empty cell idx = cellfun(@isempty,A) ; A{idx} = setdiff(I,cell2mat(A))...

6日 前 | 0

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