Respondida
Pcolor plot question. gradational color change.
x = 1:20 ; y = TIME ; % 81x1 array Z = Y ; % 81x20 array pcolor(x,y,Z) ; % if required transpose Z

alrededor de 4 años hace | 0

Respondida
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...

alrededor de 4 años hace | 1

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

alrededor de 4 años hace | 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 =...

alrededor de 4 años hace | 0

Respondida
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...

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Respondida
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...

alrededor de 4 años hace | 0

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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,:) ...

alrededor de 4 años hace | 0

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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...

alrededor de 4 años hace | 0

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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...

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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

alrededor de 4 años hace | 1

Respondida
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(...

alrededor de 4 años hace | 0

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

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Respondida
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 ...

alrededor de 4 años hace | 0

Respondida
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)

alrededor de 4 años hace | 0

Respondida
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

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Respondida
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(:...

alrededor de 4 años hace | 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') ;...

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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...

alrededor de 4 años hace | 0

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

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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')

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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...

alrededor de 4 años hace | 0

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

alrededor de 4 años hace | 0

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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...

alrededor de 4 años hace | 0

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

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

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Respondida
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...

alrededor de 4 años hace | 1

Respondida
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 =...

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Respondida
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)

alrededor de 4 años hace | 0

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

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Respondida
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...

alrededor de 4 años hace | 0