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Partitioning data out of .txt files
websave("scan.txt", "https://www.mathworks.com/matlabcentral/answers/uploaded_files/1150740/archer_fieldnotes_scan.txt") %type ...

4 years 前 | 0

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How to make a matrix from several column vector
a = rand(1,1); b = rand(10,1); c = rand(100,1); % you are not able to combine them into a matrix as you sepcified since the...

4 years 前 | 0

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How to obtain mean of columns in multiple cells?
% Generate data for i=1:5 a{i} = randn(3439, 72); end % find means s = zeros(size(a{1})); for i=1:5 s = s + a{i...

4 years 前 | 0

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How to interpolate gridded data for contourf?
doc fillmissing

4 years 前 | 0

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Implementation of fractional delay filter from scratch in matlab
If you are looking for source code of fractional delay, check out this and its accompanying codes: T. I. Laakso, V. Valimaki, M...

4 years 前 | 0

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Solve matrix equations using loop
The equations you have: You want to solve it for , and . You need to rearrage the equations: Now you solve this new syst...

4 years 前 | 0

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How to find FWHM from this?
Your data has no half power points so you cannot find fwhm. load(websave("fwhmdata.mat", "https://www.mathworks.com/matlabcentr...

4 years 前 | 0

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How to accurately compute the phase lag between two time series with same sampling frequency.
s=load(websave("Data_timeseries.csv", "https://www.mathworks.com/matlabcentral/answers/uploaded_files/1148175/Data_timeseries.cs...

4 years 前 | 1

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Graphing a two variable limit
x= -0.5:.01:0.5; y = 0.5:.01:1.5; [xx, yy] = meshgrid(x, y); zz = acos(xx./yy)./(1+xx.*yy); %zz = nan(size(xx)); % idx = ab...

4 years 前 | 1

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How to fix error "Array indices must be positive integers or logical values."
function xc = mybisect(f, a, b, tol) format longg; a_vals = zeros(a, length(tol)); b_vals = zeros(b, length(tol)); c_vals = ...

4 years 前 | 1

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strings in conditional statments
l = input('Do you want to plot: ', "s"); % s for string if l == "yes" % string comparison instead of cha...

4 years 前 | 1

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Is my matlab code for the sinc signal below correct.
%************ Variable declaration****************** t = -20:0.1:20; p = -10:1:10; signal = zeros(1,length(t)); %for spped al...

4 years 前 | 0

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How to plot the convolution integral of two functions
Use symbolic math: syms x y h tau %x = 0:0.5:10; y = exp(-x); % use -1 and -2 to ensure convolution exist h = exp(-2...

4 years 前 | 1

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Error: Edge vector must be monotonically non-decreasin with isosurface
Nx = 32; Ny = 32; Nz = 32; Lx = 2*pi; Ly = 2*pi; Lz = 2*pi; x = (0:Nx-1)/Nx*2*pi; % x coordinate in Four...

4 years 前 | 0

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How to plot envelope of a signal
load t.mat load signal.mat whos plot(t, signal); hold on [yupper,ylower] = envelope(signal,1000, 'peak'); plot(t, yupper, ...

4 years 前 | 0

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Cross Correlation lag issue
P2 = randn(10, 1); P3 = [zeros(5, 1); P2]; % P3 is P2 delayed by 5 [xc2,lags2] = xcorr(P2,P3); plot(lags2, xc2) [rho2,imax...

4 years 前 | 0

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Adding XYZ axis in RGB colors in the corner of a plot
plot(rand(10,1)) annotation('arrow', [0.8, 0.7], [0.8, 0.75], 'Color', 'r') annotation('textbox', [0.68, 0.70 0.05 0.05], 'Str...

4 years 前 | 0

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How to label a structure name in a loop
low.t1 = 2; low.t2 = 3; for i=1:2 data = low.("t"+i) end

4 years 前 | 0

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Reorder vector without for loop
A = randn(583200, 10); B =reshape(A, 540, [], 10); B = permute(B, [2 1 3]); B = reshape(B, 583200, 10); whos % To verif...

4 years 前 | 0

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using subplot in bar , how to adjust bar width
x1 = [1 2 3]; y1 = [1 2 3 ]; x2 = [1 2 3 4 5]; y2 = [1 2 3 4 5]; % Make xlim same so that the bar width is the same h1= s...

4 years 前 | 0

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Rotate Basis Vectors Programmatically
V1 = orth(randn(6)) % your original orthonormal basis % Then you can apply any other orthonormal basis to it % For e...

4 years 前 | 1

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Sorting Values my Integer and Decimal Values
p = [8.1 8.2]; if floor(p(1)) == floor(p(2)) disp("A pair.") end f = [2.1 , 3.1 , 4.1, 5.1, 6.1]; if all(abs(diff(mo...

4 years 前 | 1

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Correlate Signals with different time points
You can resample the data into sime sampling time: doc resample doc retime doc interp1 After both signals are sampled in the...

4 years 前 | 0

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How to remove the AWGN noise from data?
Uo=[20 30 40 50]; % signal U=awgn(Uo,30) % add noise to signal % Uo=U-awgn(30); % if you don't know t...

4 years 前 | 0

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How to trasform from cell to matrix and transpose from horizontal to vertical at the same time?
Data.my_cell{1} = randn(1, 11); Data.my_cell{2} = randn(1, 11); Data.my_cell{3} = randn(1, 11); Data.my_cell my_matrix = cel...

4 years 前 | 1

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How do I zoom in on a certain section of a magnitude bode plot
num = [1]; den = [1 0.04946 3.00316 0.0989847 3.00322 0.0494631 1.00006]; g=tf(num, den) bode(g) grid on ax = findobj(gcf, ...

4 years 前 | 0

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Obtaining Sine Wave From Square Wave
% generate a square wave with no fixed period f = 0.125; fs=1; s = 0.3+sin(2*pi*f*(0:40)); % a sine wave with offset x =2* (...

4 years 前 | 0

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why do I get this error while using qammod? "Expected input number 1, X, to be an array with all of the values < 4."
A few bugs in program. The major one is generating input signa which should bel: tx_bits=randi([0 M-1], [N_data_symbol,1]); N...

4 years 前 | 1

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Using trapz function to provide answers using loop
% The way to use trapz x= 1:20; % x y = randn(20, 1); % y ytrapz = trapz(x, y) % integr...

4 years 前 | 0

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Storing sparse matrices in cell or struct without converting them to full
The sparse array in cell is still sparse array as shown below, Can you show the problem you have encountered? a = sparse(eye(1...

4 years 前 | 0

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