KSSV
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8.171 total contributions since 2011https://sites.google.com/site/kolukulasivasrinivas/
Professional Interests: Mathematical Computing
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How to plot non equally spaced data in an equally spaced fashion and lable Xaxis with the data
Read about interp1. USe interpolation and make the data even. Let F, T be your column data. m = length(F) ; Fi = linspace(mi...
alrededor de 3 horas ago | 0
Determining where y = 0
Try this: syms f(x) f(x) = x.*(cos(x.^2)) - exp(sqrt(x)) + x.^3 - 4*(x.^2); Df = diff(f,x); y = subs(Df,x,0:0.001:4) ; % th...
alrededor de 5 horas ago | 0
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Plotting zero vectors in quiver3
%% set up mesh Xvc=(-5:2:5)'; Yvc=(-5:2:5)'; Zvc=(-5:2:5)'; [X,Y,Z]=meshgrid(Xvc, Yvc, Zvc); %% plot V Vx=-Y; % ...
alrededor de 8 horas ago | 1
| accepted
Left-most root Bisection method
You can refer the math here: https://www.mathwarehouse.com/calculus/continuity/continuity-bisection-method.php https://www.you...
alrededor de 9 horas ago | 0
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interpolate a matrix to fill NaN values.
Read about fillmissing. Or use interp1 as shown: clc; clear all ; T = [13.5047428571429 13.2392558823529 NaN 14.0492333333333...
alrededor de 9 horas ago | 0
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Separate row indices of a Matrix in two groups
pilot_loc= (1:N:256); % N is a variable. data_loc = setdiff(1:256,polot_loc) ;
alrededor de 10 horas ago | 1
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How to use result from first iteration from one equation and use it on other equation?
Check the below. Check the code, I have not checked it thoroughly. But you can follow the methid like shown. I have used anonymo...
alrededor de 11 horas ago | 0
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does plotting work on large no of values
Why it will not work? First try with less number of points. You ave taken a huge number of points. clc; clear all ; m = 100 ;...
alrededor de 11 horas ago | 0
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Index exceeds the number of array elements (0).
As you are expecting the angle to be in degrees, you have to use sind, cosd. If you enter the angles in radians, then use sin, c...
1 día ago | 1
Find the mean value of a signal
If you have an array a, use mean(a). a = rand(1,100) ; plot(a) ; a_avg = mean(a)
1 día ago | 0
Adding matrix values into a string
a=[1 2 3 4 5 6 7 8 9] ; str = char(a+'0')
1 día ago | 0
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Figure but no plot
You have not defined f in your code...you need to define f and then call plot...something like this: diffmax=100 x=0:0.1:dif...
1 día ago | 0
correlation and visualisation of data
The corellation is a single number...to get it you can use xcorr. If you insist on plotting have a look on plotregression. If ...
1 día ago | 0
concatination rows of matrix for making a new matrix
% Data for demo A = [0 0 1 1 0 0 0 0 0 1 1 0 0 1 0 0 1 0 0 ...
1 día ago | 1
plotting percentage of a max value
You may get multiple values for this case. [val,idx] = max(y) ; y1 = val*5/100 ; % Increase the reoslution of (x,y) data ...
1 día ago | 0
Brace indexing is not supported for variables of this type.
% List all CSV files fnames = dir('*.csv'); % Pre-allocate output vector ranges = zeros(numel(fnames), 1); % Loop over file ...
1 día ago | 1
Too Many Input Arguments
The function takes 15 inputs and you are giving 16 inputs. Please check. I feel the first input ua(j,i) is extra.
1 día ago | 0
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How do I calculate distances between multiple points on a map using a loop.
If (x,y) are your column data. To get the distance between successive points use: dx = diff(x) ; dy = diff(y) ; d = sqrt(dx.^2...
2 días ago | 0
Finding different values of a matrix in a single loop
Read about ismember. A = [ 4 5 2 8 3 4 5 6 1 3 2 4 2 7] ; ...
2 días ago | 0
Selecting either 1) a range of values from a plot or 2) selecting values from column / row value range or 3) both
To select x-values lying in the range 0.1 and 10. use: idx = x > 0.1 & x < 10 ; xi = x(idx) ; To get the respective y va...
2 días ago | 0
How to plot number of frames of acoustic signal data vs RMS?
s = rand(1,13230000) ; x = reshape(s,30,[]) ; N = size(x,2) ; x_rms= sqrt(mean(x.^2,2)) ;;
3 días ago | 1
how can i solve these linear equation? I am just installed it and having difficulties using matlab
s = solve(eqn2, a ,b ,c) ; a = double(s.a) b = double(s.b) c = dpuble(s.c) s = double(s)
3 días ago | 0
Finding min and max of an element without using builtin function
https://in.mathworks.com/matlabcentral/answers/387435-how-to-find-max-and-min-using-for-loop-and-if-condition-without-using-the-...
3 días ago | 0
Dear All, I have this question and I already solved it manually, But I was asked to code it as a matlab function or script, I am new here in your community, can anybody please help me out?
The best book available and usefule for you: https://www.amazon.in/Finite-Element-Mechanical-Aerospace-Engineering/dp/0849300967...
3 días ago | 0
Detecting coordinates of line edges
A= [0 1 0 0;... 0 0 1 0; ... 0 0 0 1; ... 0 0 0 0] ; idx = find(A) ; [i,j] = ind2sub(size(A),idx) ; [i j]
3 días ago | 0
How to divide an image into regions or grids and then calculate the number of pixels in each grid or region?
https://in.mathworks.com/matlabcentral/answers/362262-i-have-a-32-32-matrix-i-want-to-take-mean-of-each-4-4-so-that-the-matrix-i...
3 días ago | 0
Extracting data from cell array
T = cell2table(C,... 'VariableNames',{'Name' 'SirName' 'Age' 'Id'}) ; T You have the data in Table T, you can extract wh...
4 días ago | 1
Variable for table are in one row and not one column. How do I turn it or save a variable in one column?
number = 3 ; data = [1:number]' t = table(data,'VariableNames',{'Set number'})
4 días ago | 1
How to plot points from odefun
Note that Y is a m*3 matrix, you need to plot each column seperately. figure(1); plot(T,Y(:,1)) figure(2); plot(T,Y(:,2)) ...
4 días ago | 0
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finding data points for a graph using a for loop
txt = readmatrix("ec.txt"); x = txt(:,1) ; y = txt(:,2) ; z = txt(:,3) ; b =70e-9; a =49e-9; epsilon_b=1; s=0.5...
4 días ago | 0
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