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2D contour plot considering the boundary of data
[x, y, z] = peaks(40); h = pcolor(x, y, z); h.EdgeColor = 'none'; % Now plot a mask hold on ps = polyshape([-1 -1 1 1], [...

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trying to plot multiple y axis
% data x = (0:.1:4)'; y = [cos(2*x) exp(x) x.^2 5*sin(4*x)]; % Plot on the left and right y axes using yyaxis hax1 = axe...

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How can i transfer a specific number in matrix to another number along the solution matrix??
x = [1,1,0,0]; % binary A = [-27, -10, -11, -25]; idx = find(x); [~, i0] = max(A(idx)); A(idx(i0)) = 0; A % A = [-27, ...

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my code is not running
This is my best guess. for year = 2009:2017 year_index = year-2008 % no space in variable names year_struct = load...

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indexing with isnan in multidimensional arrays
% A small matrix with nans a=randn(6, 3); a([2 11 13])=nan % idx idx = ~isnan(a) a(idx) So a(idx) is a colum matrix based ...

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uneven distributed points in polarscatter
polarscatter use radian instead of deg b=0:10:350; polarscatter(deg2rad(b),ones(size(b)),100,ones(size(b)),'filled')

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How to make complete graph from co-ordinates.
Show the node name, edge weight/distance, and node coordinates x=[0.3 ,5.6 , -8.4,6.4 ]; % These are my x-cordinates y=[4.6, 6...

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Why does plot(X,Y,'or') and plot(X,Y) give different results
The line plot draws line from one point to another point. The order of points is thus important. The 'or' option just plots th...

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How to plot heat map using MATLAB?
a = peaks(40); imagesc(a) colormap(hsv(512)) colorbar

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Is it possible to have function handles with optional arguments in Matlab
With anonymous function, you can take in the argument in workspace instead of function arguments. a = 1; b = 2; c = 1; f = @(x...

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How can I change the label for my elements with same name?
A = {'1_01';'1_01';'1_01';'1_02';'1_02'}; uA = unique(A); B = A; for i=1:length(uA) idx = find(strcmp(A, uA(i))); f...

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Write Without using loop
Not sure if you have given the correct equations: % Specify n, t and x n = 10; t = (1:n)'; x = randn(n, 1); % generate...

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FFT of quantized signal
Quantizing the ideal sinusoidal signal will produce a perodical signal, which may have some weird spectrum with 0 at some freque...

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Can u use filtfilt with structfun?
cheby_hp = designfilt('highpassiir', 'FilterOrder', 10, 'StopbandFrequency', 0.4, 'StopbandAttenuation', 80, 'SampleRate', 200);...

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Warning: Matrix is singular to working precision.
A=[1 1 1 1 0 ; 1 1 1 1 1 ; -1 -1 -1 -1 1 ;-778.8791468 -346.4077963 -149.2503011 -149.2503011 -163.019189 ; 16.28468788 201.1553...

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draw a function in the matlab
a=0; k = (-10:1:10)*2*pi; g = -2*pi./(4*pi^2+(a-k*1i).^2) +2*pi./(4*pi^2+(a+k*1i).^2) -(a-k*1i)./(36*pi^2+(a-k*1i).^2) +... ...

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plot for a numerical question
Assume x, k, a are real, a>0. Then . Similarly . Then your formula can be much simplified.

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how to create a sequence with percentage increments
n = 10; x = 3*1.1.^(0:n-1)

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How to integrate 3-dimensional numerical array into one dimension using Parallel Computing Toolbox?
Xd= distributed(X, 3) % distributed along 3rd dim Y = trapz(Xd, 3); % trapz support parallel processing for dis...

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Change eye diagram plot color into black on white
get a handle of the object and there are color properties for you to change. You may also need to change the Children object co...

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Could anyone help me how to have the legend as in the desired manner for two y axis.
Change the last line x=1:10; y1=rand(1,10); y2=rand(1,10); y3=rand(1,10); y4=rand(1,10); figure(1) [hAX,hLine1,hLine2] ...

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Cutoff frequency in graph
For cheby filter, the cut-off frequency is the edge frequency at which the magnitude response of the filter is –Rp (passband rip...

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zplane z or z-1
It's z-plane. See the following example, where all poles are inside the unit circle. [b,a] = cheby2(8/2,20,[1 5]/8); zplane(b...

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how can i multiply two large arrays of different sizes?
sigma = 0 %can set sigma to any positive integer number but choosing 0 to simplify things for now w = (0:2*pi:10*...

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Code Error Help Please
disp('2a-Part 1') f(-500,30,45,5,5); disp('2a-Part 2') f(-281,20,58,5,5); disp('2b-Part 1') f(-500,30,45,5,3.72); disp('2b...

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How I can modify the decimal numbers in a table's column?
a = randn(5,1) str = sprintf('%.1f\n', a)

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Filter timetable by month
%T_Departures_Jan = T_Departures.Date_Time(timerange('01/01/2020', 'months'),:); T_Departures_Jan = T_Departures(month(T_Depart...

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I need to save previous adjacent position of object movement
RxPre = [0 0]; % initial position for xx=1:1:no_of_moves_in_x for yy=1:1:no_of_moves_in_y Rx = get_Rx_position(R...

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Convert Time Given in Seconds to Minute, Seconds, Milliseconds
[h, m, s] = hms(duration([0 0 183.55])) % for sec and fractional sec si = floor(s) sf = s-si

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Packing perfcurve results into a structure
% avoid using Struct (similar to keyword struct) p=struct('X', X_, 'Y', Y_, 'T', T_, 'AUC', AUC, 'OPTROCPT', OPTROCPT); % Al...

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