# KSSV

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

Professional Interests: Mathematical Computing

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**Content Feed**

generate column array with day in year number for each hour in a year

r=repmat(0:364,24,1) ; r=r(:);

ongeveer 15 uur ago | 2

| accepted

How to find how many intersections in a graph?

Refer this function: https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections

ongeveer 16 uur ago | 0

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...

1 dag ago | 0

Find a y axis increasing point in a plot -

Let y be your array. idx = find(y==1) ; iwant = idx(1)-1

1 dag ago | 0

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) ...

1 dag ago | 0

| accepted

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(...

1 dag ago | 0

| accepted

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) ;

1 dag ago | 0

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How to plot NaN value

idx = isnan(A) ; A(idx) = 0 ; surf(A) view(2)

2 dagen ago | 0

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How to find all intersections in a Matlab graph?

USe this file exchange: https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections?requestedDomain=

2 dagen ago | 0

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 ...

2 dagen ago | 0

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What does 'li' mean?

1i stands for complex number. i.e. sqrt(-1). c=2+3*i c=2+3*1i

2 dagen ago | 0

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.

2 dagen ago | 0

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 dagen 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

3 dagen 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...

3 dagen 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 ...

3 dagen 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') ;...

3 dagen 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

3 dagen ago | 0

Running time Average of column values

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

4 dagen 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') ; ...

4 dagen ago | 0

| accepted

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...

4 dagen ago | 0

Alternative way of defining a variable

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

4 dagen ago | 0

How to strrep only certain strings

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

4 dagen 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.

5 dagen 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

5 dagen 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 ...

5 dagen 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(...

5 dagen 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);

5 dagen ago | 0

| accepted

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; ...

5 dagen 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 ; ...

6 dagen ago | 0