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KSSV


Last seen: Today Active since 2011

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

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Answered
How do I find max values in a vector
v=[1, 3, 5, 2, -4, -3, -1, 2, 3, 1, 2, -3, -2, -4] ; iwant = [max(v(v>0)) min(v(v>0)) max(v(v<0)) min(v(v<0))]

15 hours ago | 0

Answered
plotting multiple vertical lines on a graph
figure(1) cla; scatter(x(:,a),y(:,a)) xlabel('X Coordinates') ylabel('Y Coordinates') title('Particle locations in the rice...

15 hours ago | 0

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Answered
I want to change xlim,ylim of axes , and draw a circle at the point I chose when I click on a place in the axes in GUI
th = linspace(0,2*pi) ; R = 1. ; % Radius of circle x = R*cos(th) ; y = R*sin(th) ; figure axis([-5 5 -5 5]) ; % cahange...

18 hours ago | 0

Answered
Output of [~,IDX] = max(...) not in DOUBLE but in INT.
You can convert double into integer using int32 ot int64.

18 hours ago | 0

Answered
How to plot a curve between 2 data sets
P1=[2.3;3.9;3.5;4.8;5.5;6.3;7.4]; P2=[4.8;5.7;6.5;7.8;9.2;10.5;11.8]; D=[78;65;57;52;46;32;27]; %% Dp=P2-P1; Q=0.24*D; % ...

19 hours ago | 0

Answered
How to insert variables (string) in MATLAB function
syms t R=[1 0 0;0 cos(t) -sin(t); 0 sin(t) cos(t)]

20 hours ago | 0

Answered
Monthly Time Series Plot
You can do intepolation by creating your required time stamps or use the inbuilt function retime. https://in.mathworks.com/help...

20 hours ago | 0

Answered
How to change output format 20 culumn!
r = 2; % number of rows c = 30 ; % number of columns M=rand(r,c)

20 hours ago | 0

Answered
How do I plot quivers on a curve?
If you are expecting colors based on the magnitude use this: https://in.mathworks.com/matlabcentral/fileexchange/3225-quiverc

23 hours ago | 0

Answered
generate column array with day in year number for each hour in a year
r=repmat(0:364,24,1) ; r=r(:);

4 days ago | 2

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Answered
How to find how many intersections in a graph?
Refer this function: https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections

4 days ago | 0

Answered
how to repeat an input question
A = 'start' ; while ~strcmpi(A,'end') N=input('what is N?: ') %establishes N A=input('give me a sentence!: ','s'); %a...

4 days ago | 0

Answered
Find a y axis increasing point in a plot -
Let y be your array. idx = find(y==1) ; iwant = idx(1)-1

4 days ago | 0

Answered
Convert an integer into a decimal number
m=2 m/10 If your class of variable is int32 or int64 i.e. an integer. Then convert it to float using double. m = int64(2) ...

5 days ago | 0

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Answered
Can you create a matrix where every element is a vector?
You can consider each element as a cell. And then create a cell array. But why? A = cell(2) ; A{1,1}=rand(1,3) ; A{1,2}=rand(...

5 days ago | 0

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Answered
Problem using fft();
Remove the mean from the data and then use fft. Say A is your data, (array). For fft use: A = A-mean(A) ;

5 days ago | 0

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Answered
How to plot NaN value
idx = isnan(A) ; A(idx) = 0 ; surf(A) view(2)

5 days ago | 0

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Answered
How to find all intersections in a Matlab graph?
USe this file exchange: https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections?requestedDomain=

5 days ago | 0

Answered
Storage results in an array
x=[2,3,4,5,6]; y=zeros(size(x)) ; for i = 1:length(x) if x(i)>4 y(i)=x(i)^2 else y(i)=x(i)+2 ...

5 days ago | 0

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Answered
What does 'li' mean?
1i stands for complex number. i.e. sqrt(-1). c=2+3*i c=2+3*1i

5 days ago | 0

Answered
how can I extract 2D matrices for xy, xz, yz planes from a 3D matrix and use the pcolor function?
Read about slice. This is your function.

5 days ago | 0

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Answered
How to read the desired coordinates from this image and find the coordinates with the highest value
You have plotted this image with the coordinates in hand. USe max function to get the maximum value. Read about function max. ...

6 days ago | 0

Answered
How do I plot and return the values of multiple intersections between a function and zero?
You can consider using this: https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections

6 days ago | 0

Answered
find minimum from cell array
T = readtable('my_excel.xlsx') ; [val,idx] = min(T.(2)) ; % get minimum from col2 iwant = T.(1)(idx) ; % get the value I...

6 days ago | 0

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Answered
I have matrix A and I need to find (e^(At)) where t is the sampling time. How to find that? Also what is the difference between exp(A) and expm(A)?
A = rand(2) ; t = linspace(0,1) ; iwant = zeros(2,2,100) ; for i = 1:100 iwant(:,:,i) = exp(A*(t(i))) ; end exp might ...

6 days ago | 0

Answered
how to visualize a data with lon, lat and time array
file = 'EDGAR_HTAP_emi_NOx_2010.0.1x0.1.nc' ; x = ncread(file,'lon'); y = ncread(file,'lat'); Z = ncread(file,'emis_tot') ;...

6 days ago | 1

Answered
How do i find max value between 1 and 13 column of 1001 columns.
x = rand(1,1001) ; y = reshape(x,[],13) ; % reshape iwant = max(y,[],2) ; % get max

6 days ago | 0

Answered
Running time Average of column values
If A is your column array. iwant = cumsum(A)./(1:numel(A))

7 days ago | 1

Answered
Interpolation of 3 dimensional values from a excel file
Read about interp2. T = readtable('https://in.mathworks.com/matlabcentral/answers/uploaded_files/771628/excel%20table.xlsx') ; ...

7 days ago | 0

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Answered
How can I run the calculation of one equation through a range of variables in one loop
You can proceed something like below. No need to use loops. i = 1; S_T = 0:3:60 ; TS_T =(deg2rad(S_T));%incline in Radia...

7 days ago | 0

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