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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 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...

2 hours 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

12 hours 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) ...

17 hours 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(...

18 hours 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) ;

18 hours ago | 0

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

21 hours 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=

23 hours 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 ...

23 hours 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

1 day 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.

1 day ago | 0

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. ...

1 day 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

2 days ago | 0

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

2 days ago | 0

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 ...

2 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') ;...

2 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

2 days ago | 0

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

3 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') ; ...

3 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...

3 days ago | 0

Answered
Alternative way of defining a variable
a = zeros([],1) ; b =[] ; But it depends. What is the requirement?

3 days ago | 0

Answered
How to strrep only certain strings
x = {'e-.00085';'8.5e-4'}; y = strrep(x,'e','')

3 days ago | 0

Answered
Sorting cell array based on distance
Read about knnsearch. This will give you the nearest points from a set points for a given point. This will work for you.

4 days ago | 0

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Answered
How to get a square matrix out of a augmented matrix?
n = 5 ; A = rand(n) ; % square matrix B = eye(size(A)) ; % Identity matrix Ag = [A B] ; % augemented matrix

4 days ago | 0

Answered
How to find yield point and plot strain hardening part?
file = 'https://in.mathworks.com/matlabcentral/answers/uploaded_files/770221/highstrain.csv' ; T = readtable(file) ; x = T.X ...

4 days ago | 0

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Answered
How can I get the sea ice concentration data corresponding to the latitude and longitude from the geotiff file?
filename = 'N_20180101_concentration_v3.0.tif' ; [A,R] = readgeoraster(filename) ; % If not try geotiffread [m,n] = size(...

4 days ago | 0

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Answered
Movie function with subplots: error "Unrecognized method, property..."
Try replacing the line: [h, w, p] = size(f(1).cdata); % use 1st frame to get dimensions with [h, w, p] = size(M(1).cdata);

4 days ago | 0

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Answered
Plot of a Time Variable
As you have data every second, you need to do hourly mean to get 24 values. You have two options. Reshape the data into 24*m; ...

4 days ago | 0

Answered
How can I specify maximum and minimum of a parameter inside a loop
minC = 0; maxC = 0; for i=1:50 A(i)=f(i); B(i)=f(A); C(i)=F(B); if C > maxC maxC = C ; ...

5 days ago | 0

Answered
plot a table of two columns
If T is your table. To plot use: plot(T.(1),T.(2))

5 days ago | 1

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Answered
Write function that returns true if (inputmatrix > 0)
A = rand(5) ; P = A > 0.5

5 days ago | 0

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