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Why doesn't it work ? Please help
dt = 0.01; t = 4; T = 0:dt:t; % First Quarter r1 = 0:dt:t/4 ; p1 = sin(pi.*r1) ; plot (r1,p1) % Define second Qua...

circa 3 anni fa | 0

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matlab polyfit multiple sets of y data
Run a loop for each set..... Let y be your mxn data and x be your 1xn data. p = cell(m,1) ; for i = 1:m p{i} = polyfut...

circa 3 anni fa | 0

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Can't run my 'if, elseif, else' code
score= randi(100); if score < 20 grade = 'D'; elseif score < 40 grade= 'C'; elseif score < 60 grade= '...

circa 3 anni fa | 0

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cell array into matrix
Read about cell2mat.

circa 3 anni fa | 0

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Not enough input arguments
f = @(x,y) x.*y + 10*sin(x).*cos(y); x = linspace(0,2*pi) ; y = linspace(0,2*pi) ; [X,Y] = meshgrid(x,y) ; Z = f(X,Y) ; su...

circa 3 anni fa | 1

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can you help me to solve this equation?
syms x P = sqrt(27.8*exp(5*x)-1) == cos((120*x^2+sqrt(2*x))/(17*x-65))^(-1) ; s = vpasolve(P,x)

circa 3 anni fa | 0

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Syntax problem with a user-defined function with sine
function r = my_function(thet) r = pi*(3-sin(theta)^5) ; end Save the above, it will be saved on he name my_function.m. ...

circa 3 anni fa | 0

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Matrix multiplication gives different result than manual dot products with each column
As you are comparing floatting point number, you should not use isequal. You should proceed like shown below: N = 1000; B = 10...

circa 3 anni fa | 0

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How to plot the streamlines and arrow surface in MATLAB from columns of data?
clc ; clear all ; % T = readtable('https://in.mathworks.com/matlabcentral/answers/uploaded_files/1311670/streamlines%20plot.txt...

circa 3 anni fa | 0

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trying to align multiple sin waves onto same graph with the period of the wave on the x axis.
Take same time array for all the waves. g = 9.807; T = 11; H = 4; d = 30; CD = 0.85; CM = 1.77; Rho = 1025; D = 1; u =...

circa 3 anni fa | 0

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Double X-axis(t,p1) and single Y-axis(p2) depending on t
T = readtable('https://in.mathworks.com/matlabcentral/answers/uploaded_files/1309930/b1.xlsx') ; t = duration(T.Time); p1 = T....

circa 3 anni fa | 0

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How to apply the same style/color and axes labels to all subplots?
colors = ["k"; "r";"g";"r";"g"]; lines = ["-"; "-";"-";"--";"--"]; tiledlayout(2,2); ax(1) = nexttile ; plot(rand(10,1)...

circa 3 anni fa | 1

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Generating lognormal random numbers
Read about lognrnd

circa 3 anni fa | 0

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How to get the decimal values using solve in MATLAB
Read about vpasolve, double.

circa 3 anni fa | 1

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How do I repeat the comand for another line
dt = dx1./v; % let dt be 10x1 array m = length(dt) ; n = 60001 ; temp0 = zeros(m,n) ; for i = 1:n tempo(:,i) = 0:dt...

circa 3 anni fa | 0

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Create a point with a number inside
th = linspace(0,2*pi) ; x = cos(th) ; y = sin(th) ; % Make numbers idx = 1:5:length(th) ; figure hold on plot(x,y,'k',...

circa 3 anni fa | 0

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Pulling Vectors From 3D Matrix Based on Indicies
A = rand(30,40,10) ; iwant = squeeze(A(13,33,:))

circa 3 anni fa | 1

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How to have two legends on the same plot?
figure hold on plot(rand(1,10),'r') plot(rand(1,10),'b') legend('One','Two')

circa 3 anni fa | 1

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Please help, I keep getting this error... Error using plot Not enough input arguments.
Months=["Jan";"Feb";"March";"April";"May";"June";"July";"Aug";"Sept";"Oct";"Nov";"Dec"]; EnergyDailyAve = [33.677 76.714 69.6...

circa 3 anni fa | 0

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Calculate area under peak
Read about the functions polyarea, trapz. Provde the (x,y) data of the curve for which you want to calculate the area.

circa 3 anni fa | 0

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How to combine the data from multiple netcdf files and make it one .mat file?
%% List of files list_of_files= dir(fullfile(ddir,'*.nc')) %% Read Rainfall Data filename = fullfile(ddir, list_of_files(1).n...

circa 3 anni fa | 1

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Can anyone tell me why I'm getting an error here? "xold=xnew;'' is giving me an error in this statement and I'm not sure why.
These lines: xold=3.5; d=0.01; % Iteration 1 xold=xnew; xnew=xold-d*xold*fx(xold)/(fx(xold+d*xold)-fx(xold)); will obvious...

circa 3 anni fa | 1

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Solve the given system of equations using the Gauss-Jordan elimination method with MATLAB.
Read about rref A = [0.1 -2.5 1.2 -0.75 108 ; 2.4 1.5 -1.8 0.25 -81; 0.4 -3.2 1.6 -1.4 148.8; 1.6 1...

circa 3 anni fa | 0

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data_chirp(:,:,1:2:end); what does this code mean???
It means your data i.e. data_chirp is a 3D data. That line extracts all rows, all columns at odd indices of 3rd dimension. To ...

circa 3 anni fa | 0

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How to find largest Peak Values of signal and Save X,Y Values in MATLAB
Read about the function max, findpeaks. The above functions gives you index of the max value, using this index you can get x-v...

circa 3 anni fa | 1

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How to plot cluster group by circles
You may fit a circle to the cluster data using the following fileexchange function. https://in.mathworks.com/matlabcentral/fil...

circa 3 anni fa | 0

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How do I onehotencode a table without encoding variable names?
B = table(); for i = 1:size(MyTable,2) B = [B, onehotencode(MyTable.(i))]; end You may consider using width instead of s...

circa 3 anni fa | 0

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How to create 4D array of images
Say you have n images each of size p,q. data = zeros(p,q,1,n) ; for i = 1:n data(:,:,1,i) = image1 ; % loop for each i...

circa 3 anni fa | 1

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sum() missing for certain values
Don't use sum(Vector==x) use tol = 0.0001 ; % set your acceptable tolerance sum(abs(Vector-x)<tol) ;

circa 3 anni fa | 0

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plotting data from multiple sheets by ID and day
fname = 'https://in.mathworks.com/matlabcentral/answers/uploaded_files/1300500/RLC_AD.xlsx' ; sheets = sheetnames(fname) ; ...

circa 3 anni fa | 0

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