KSSV
https://sites.google.com/site/kolukulasivasrinivas/ Professional Interests: Mathematical Computing
Python, MATLAB, Fortran
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Array indices must be positive integers
The error is clear......your indices are either negative or zeros double. When you are indexing, the indices should be either lo...
5 months ago | 0
Submitted
complex corelation and p-value
To find the complex correlation and its p-value between two complex vectors.
6 months ago | 3 downloads |
getSlope function issues for MATLAB code
You can implement this function in few lines from the Method you have mentioned. Let x be your voltage readings and y be their...
6 months ago | 0
| accepted
3d plots with attributes of points
Let data be your three columns matrix. x = data(:,1) ; y = data(:,2) ; z = sata(:,3) ; % Plot as unstructured grid dt = d...
8 months ago | 0
Print a statement to the Command Window
To display text in the Command Window, use disp or fprintf . disp('job done') or fprintf('job done \n')
8 months ago | 21
| accepted
is there a way to automatically label columns with stackedplot with a common name?
You rename the labels of the table to the desired and use stackedplot. A = rand(10,4) ; T = array2table(A) ; stackedplot(T) ...
8 months ago | 0
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How can I plot 2D streamlines on top of a surf plot?
% conc plot first [X,Y,Z] = peaks(100) ; [uX,uY] = gradient(Z) ; figure(1); surf(X,Y,Z); daspect([1 1 1]); shading int...
9 months ago | 1
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How to remove all weird column names from a table and replace them (with numbers or alphabet letters)?
T = readtable(myfile) ; T.Properties.VariableNames = {'1','2','3','4','5','6','7','8'} ; NOTE: The column names on the right...
9 months ago | 1
| accepted
Question on surface plotting (beginner)
T = readtable('surface.txt') ; x = T.(1) ; y = T.(2) ; z = T.(3) ; F = scatteredInterpolant(x,y,z) ; dx = 0.1 ; dy = 0.1 ;...
9 months ago | 2
| accepted
Help importing and reading .csv file and graphing
T = readtable('myFile.csv') ; figure hold on plot(t,T.(1),'r') plot(t,T.(2),'b') legend('data1','data2') Where t is your d...
9 months ago | 0
Creating a histogram with non-increasing x axis
A = rand(100,1) ; figure h = histogram(A) ; vals = h.Values ; bins = h.BinEdges ; bins = (bins(1:end-1)+bins(2:end))/2 ; ...
10 months ago | 1
| accepted
Data Reshape for Contour Plot
T = readtable('https://in.mathworks.com/matlabcentral/answers/uploaded_files/1776380/RawDataCFXPost.xlsx'); [theta,rho,z] = car...
10 months ago | 0
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If f1(x,y)≤z≤f2(x,y), how to draw the range of z?
x=-5:0.1:5; y=-5:0.1:5; [m,n] = meshgrid(x,y) ; z1 = m.^2+n.^2; z2 = 3*m.^3+n.^2+1 ; surf(x,y,z1,"EdgeColor","none")...
10 months ago | 0
Vectorize scalar and colon
A = zeros(6,10) ; A(:,1:3) = 1 ; A(4:6,4:5) = 1;
10 months ago | 0
Pearson correlation graph between variables
clc; clear ; R = zeros(6,1) ; for i = 1:6 X = rand(100,1) ; y = rand(100,1) ; R(i) = regression(X',y') ; ...
10 months ago | 0
how to plot from .csv file?
T=readtable('https://in.mathworks.com/matlabcentral/answers/uploaded_files/1753899/baseline.csv') ; freq=T.(2)(1:6); A_1_PE_H...
11 months ago | 0
Multiple text entries over plots
You can use the text to add the strings. You need to specify the position where you want to place the string. You may find centr...
11 months ago | 1
| accepted
How to Extract photos at Each frame from a Video in MATLAB?
vidObj = VideoReader('C:\Users\Public\Videos\Sample Videos\Wildlife.wmv'); numFrames = 0; while hasFrame(vidObj) F = read...
11 months ago | 0
Interpolation of two-dimensional within a given space window
T = readtable('https://in.mathworks.com/matlabcentral/answers/uploaded_files/1744881/Points.txt'); x = T.(1) ; y = T.(2) ; z ...
11 months ago | 0
copping grayscale image and remove any other borders or details
Read about imcrop. [I,rect] = imcrop(myimage) ;
11 months ago | 0
Script has no errors, but no plot is given
% Constants hbar = 1.0545718e-34; % Planck's constant m = 9.10938356e-31; % Electron mass l = 1; % angular momentum quantum...
12 months ago | 0
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Index in position 1 is invalid. Array indices must be positive integers or logical values.
You need to proceed like this: tic % Specifying the length of the array N = 1000; % Making phi and theta array lengths th...
1 year ago | 0
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How to move colorbar in scatter3 plot and keep it inside the figure
You need to play with the position. cb.Position = [x y L w] ; The position have the details of position (x,y) of the colorbar...
1 year ago | 0
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How do I plot a polynomial equation and set of x-y coordinates on the same graph?
x = [2 5 8 11 14 20]; y = [0.20 0.29 0.44 0.50 0.66 0.56]; p = polyfit(x,y,3) ; yi = polyval(p,x) ; figure hold on plo...
1 year ago | 0
How to make double array representation as complex array with null imaginary number ?
z = 3+eps*1i
1 year ago | 2
| accepted
How can I perform time averaging of a signal acquired with an accelerometer?
Read about smooth, movmean.
1 year ago | 1
