Community Profile # KSSV

Last seen: Today Active since 2011

Professional Interests: Mathematical Computing

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

2 days ago | 2

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

2 days 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...

3 days ago | 0

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

3 days 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) ...

3 days ago | 0

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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(...

3 days ago | 0

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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) ;

3 days ago | 0

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

3 days 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=

3 days 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 ...

3 days 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

4 days ago | 0

how can I extract 2D matrices for xy, xz, yz planes from a 3D matrix and use the pcolor function?

4 days ago | 0

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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. ...

4 days 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

4 days 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...

4 days 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 ...

4 days ago | 0

how to visualize a data with lon, lat and time array

4 days 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

4 days ago | 0

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

5 days ago | 1

Interpolation of 3 dimensional values from a excel file

5 days 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...

5 days ago | 0

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

5 days ago | 0

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

6 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.

6 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

6 days ago | 0

How to find yield point and plot strain hardening part?

6 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(...

6 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);

6 days ago | 0

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