# KSSV

https://sites.google.com/site/kolukulasivasrinivas/

Professional Interests: Mathematical Computing

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**Content Feed**

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. ...

3 hours ago | 0

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

5 hours ago | 0

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...

6 hours ago | 0

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 hours ago | 0

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') ;...

8 hours ago | 1

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

8 hours ago | 0

Running time Average of column values

If A is your column array. iwant = cumsum(A)./(1:numel(A))

1 day ago | 1

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') ; ...

1 day ago | 0

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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...

1 day ago | 0

Alternative way of defining a variable

a = zeros([],1) ; b =[] ; But it depends. What is the requirement?

1 day ago | 0

How to strrep only certain strings

x = {'e-.00085';'8.5e-4'}; y = strrep(x,'e','')

2 days ago | 0

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.

2 days ago | 0

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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

2 days ago | 0

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 ...

2 days ago | 0

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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(...

2 days ago | 0

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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);

2 days ago | 0

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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; ...

2 days ago | 0

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 ; ...

3 days ago | 0

plot a table of two columns

If T is your table. To plot use: plot(T.(1),T.(2))

3 days ago | 1

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Write function that returns true if (inputmatrix > 0)

A = rand(5) ; P = A > 0.5

3 days ago | 0

Why isn't the plot showing up? (new on programing)

x = linspace(-10,10,100); y = @(x) (x.^2 + x.^2 + 3.*x)./(x.^2 + 4.*x + 5); % element by elememnt division plot(x,y(x),'r','L...

3 days ago | 0

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How to get the centerline of a binary region

You can get the indices of white pixels using find and to the data you can try fitting a line or quadratic equation using polyfi...

3 days ago | 3

Transforming 4 sets of 1x4 matrix into a 4x4 matrix

zetaliq=zeros(4); for j=1:4 zetaliq(j,:)=(pi/6).*rholiq.*(X1.*m1.*d1^(j-1)+X2.*m2.*d2^(j-1)) ; end zetaliq

3 days ago | 0

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Grouping data into bins and then plotting them

You can calculate the every three hours mean using the fuction retime. Read about it. To see the variation of every hours, stria...

3 days ago | 0

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How to delete some of anonymous variables randomly?

Multiply each variable with a constant array, and assign this contant array with 0 and 1. See to it that, randomly only three 1'...

3 days ago | 0

Array indices must be positive integers or logical values.

%Euler Method %parameters g=9.81; rho=1.2; s=0.00011; m=0.023; Cd=0.9; %Initial Condition V0=0; V=zeros([],1); %I...

4 days ago | 1

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how can I find the maximum value of a parameter running within a loop

maxC = 0 ; for i=1:100 A=f(i) ; B=f(A,i) ; C=f(B,i) ; if C > maxC maxC = C ; Amax = A ;...

4 days ago | 0

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make a matrix out of list

Read about importdata. You can import the data into MATLAB, the data will be a cell array. S = importdata('myfile.txt') ; cel...

4 days ago | 0

How could I write in a vector something in a position different to a given one?

v = [1,2,3,4,5]; idx = 3; iwant = NaN(size(v)) ; iwant(idx) = v(idx)

5 days ago | 1

How to store data when a string condition of another column is met?

T = readtable('https://in.mathworks.com/matlabcentral/answers/uploaded_files/768171/SED_FULL_NE.xlsx') ; id = [1 4 12] ; T =...

5 days ago | 0