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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=

7일 전 | 0

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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 ...

7일 전 | 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

8일 전 | 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.

8일 전 | 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. ...

8일 전 | 0

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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

8일 전 | 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...

8일 전 | 0

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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 ...

8일 전 | 0

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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') ;...

8일 전 | 1

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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

8일 전 | 0

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

9일 전 | 1

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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') ; ...

9일 전 | 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...

9일 전 | 0

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

9일 전 | 0

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

10일 전 | 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.

10일 전 | 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

10일 전 | 0

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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 ...

10일 전 | 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(...

10일 전 | 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);

10일 전 | 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; ...

10일 전 | 0

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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 ; ...

11일 전 | 0

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

11일 전 | 1

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

11일 전 | 0

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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...

11일 전 | 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...

11일 전 | 3

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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

11일 전 | 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...

11일 전 | 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'...

11일 전 | 0

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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...

12일 전 | 1

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