Answered
How to; For loop of angle in projectile motion
You are not updating the theta0 to find the range. You need to input theta0 to the function. clc; clear all ; g = 9.82; %grav...

3 years ago | 1

Answered
Plot a 3d surface
T = readtable('https://in.mathworks.com/matlabcentral/answers/uploaded_files/1101840/Ex12.xlsx') ; data = table2array(T) ; x =...

3 years ago | 0

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Ploting a 3d figure by exel data
T = readtable('https://in.mathworks.com/matlabcentral/answers/uploaded_files/1101815/Ex12.xlsx') ; data = table2array(T) ; x =...

3 years ago | 0

Answered
How to save outputs from previous iterations and plot
n = 180 ; a = zeros(1,n) ; a(1) = 20000; R = 0.06; r = R/12; z = amortization(a(1),R,n); for i = 2:n b = a(i-1)*r...

3 years ago | 0

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Answered
How to sort all rows in one table based on one row from the table and another table
Read about ismember T1 = {'Mom', 'Dad' 'Sister'} ; T2 = {'Sister', 'Mom', 'Dad'}; [c,ia] = ismember(T1,T2) ; T2(ia) Now use...

3 years ago | 0

Answered
Spline interpolation of 4D matrix
A = rand(450,450,50,3) ; B = zeros(size(A)) ; for i = 1:450 for j = 1:450 for k = 1:50 B(i,j,k,:) ...

3 years ago | 0

Answered
How to take average of such an array?
% Make data for demo A = cell(6,2) ; for i = 1:6 for j = 1:2 A{i,j} = rand(1,10) ; end end % Get mean i...

3 years ago | 0

Answered
How to get sample names from scatter plot in classification learner
If you have feature1, feature2 in hand, you can use knnsearch to get the index and then check the sample name. If you are havi...

3 years ago | 0

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Answered
Why does not string(f.name) work, f = dir(folder)?
folder = "~/Documents" f = dir(folder) ; % f is a structure for i = 1:length(f) f(i).name end

3 years ago | 1

Answered
Plotting the function on a Sphere?
r = 1 ; th = linspace(0,2*pi) ; phi = linspace(0,pi) ; [T,P] = meshgrid(th,phi) ; X = r*cos(T).*sin(P) ; Y = r*sin(T).*sin(...

3 years ago | 0

Answered
Generate a sequence/vector of randomized letters
a='A':'Z'; letters= a(randi(numel(a), 1, 10)) iwant = strjoin(cellstr(letters'),',')

3 years ago | 1

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Answered
Plot 2-d contour of 3D dataset
How about this? T = readtable('https://in.mathworks.com/matlabcentral/answers/uploaded_files/1099910/data_16082022.csv') ; x ...

3 years ago | 0

Answered
Solve the following differential equations using Matlab.
syms p(x) ode = diff(p)+8*p==9 ; cond = p(0)==-1 ; pSol(x) = dsolve(ode,cond)

3 years ago | 0

Answered
Compare 2 Matrixs Different Dimension With For
A = [1 1 1 1 2 4 2 3 2 1]; B = [4 1 3 1 2]; idx = A'==B

3 years ago | 0

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Answered
Create an image from x and y locations with greyscale value
data = [0 0 255 0 0.5 70 0 1 111 0.5 0 26 0.5 0.5 26 0.5 1 255 1 0 108 1 0.5 26 1 1 70] ; x = data(:,1) ; y = data(:...

3 years ago | 0

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getting x and y values and writing them
Already you have data in hand. If you want to write that into a file use: data = [t(:) x(:)] ; writematrix(data,'data.txt') ;...

3 years ago | 0

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Answered
How to draw phase portrait
plot(t,xa(:,1)) In the baove use your required index for the column and plot. You can use quiver, if you have vectors. Assumin...

3 years ago | 0

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3D dose plot and color wash
T = readtable('myfile.xlsx') ; scatter3(T.(1),T.(2),T.(3),[],T.(4),'filled')

3 years ago | 0

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Answered
I HAVE A KEY WHICH IS 1*16 MATRIX. HOW CAN I DETERMINE IT'S BIT SIZE?
KEY=[0 0 1 0 3 12 8 7 7 8 12 3 0 1 0 0] ; a = single(KEY) ; iwant = whos('a')

3 years ago | 0

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Answered
Create a structure of a field in the workspace
You can save them into a matfile and access, as you like. A = 1 ; B = 2; C = 3 ; save Test.mat ; S = matfile('Test.ma...

3 years ago | 0

Answered
append data to the already existed .txt file horizontally
T1 = readtable('file1.txt') ; T2 = readtable('file2.txt') ; T = [T1 T2] ; writetable(T,'file.txt')

3 years ago | 0

Answered
overlap the same data 5 times
Let M be the matrix in your mat file. matFiles = dir('*.mat') ; N = length(matFiles) ; iwant = []; for i = 1:N S = ma...

3 years ago | 0

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How to determine an y value at a specific x value?
Read about interp1

3 years ago | 0

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How to get the first derivative of pixels along of line?
REad about gradient

3 years ago | 0

Answered
How to plot this ellipse
syms s1 s2 t = 0 ; eqn = s1^2-15.156*s1*s2+229.7*s2^2+488.8*t^2+6844000*s2==4.752*10^10 ; fimplicit(eqn,[-600000 200000 -100...

3 years ago | 1

Answered
Integrate a polyfit-polyval in matlab, I would appreciate any input. I want to calculate the integral of the sine function from a trend li
%% Integration p2=polyfit(X,Y,4); fun = @(x) p2(1)*x.^4+p2(2)*x.^3+p2(3)*x.^2+p2(4)*x+p2(5) ; % using p2 from polyfit val =...

3 years ago | 0

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Answered
solve equation numerically 1=(1/y)x*exp(x*y)
syms x y f = 1==1/y*x*exp(x*y) solve(f,x) solve(f,y)

3 years ago | 0

Answered
How to remove leading zeros in decimal representation?
A = [23, 15, 256, 75]; B= dec2bin(A) strip(string(B),'left','0')

3 years ago | 1

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Answered
I want to select an Excel file by it's extension
%% Here only 1 Excel file will be present in ComparySummary folder. And I want select that Excel file with FilePath %% FilePath...

3 years ago | 0

Answered
How to retrieve the specific rows with all the columns in the dataset?
I hope the dataset is in the form of a table. So your table is going to be of size 2832x4. idx = T.Time==1.5 ; T1 = T(idx,:) ...

3 years ago | 0

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