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

5 years ago | 0

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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...

5 years ago | 0

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

5 years ago | 0

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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 years 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 years 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 years ago | 0

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

5 years 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 years 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 years 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 years ago | 0

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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 years 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. ...

5 years ago | 0

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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

5 years ago | 0

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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...

5 years 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 ...

5 years 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') ;...

5 years 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

5 years ago | 0

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

5 years ago | 1

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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') ; ...

5 years 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...

5 years ago | 0

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

5 years ago | 0

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

5 years ago | 0

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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 years 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

5 years 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 ...

5 years ago | 1

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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(...

5 years 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);

5 years 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; ...

5 years 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 years ago | 0

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

5 years ago | 2

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