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Ameer Hamza

Hong Kong Polytechnic University

2,630 2016 이후 총 참여 횟수

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How to copy a Matrix to a table and how to convert a column to a dropdown menu?
Does your table have more then 4 rows? Try this app.UITable2.data(1:4,4) = num2cell(Z); To display a dropdown menu in the colu...

약 2시간 전 | 0

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How to compute centered moving average from an NxM array
You can use movmean() and discard the endpoints M = [ 1 11 2 12 3 10 4 10 5 12 6 11 7 12 ...

약 2시간 전 | 0

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How to solve a second order non-homogeneous equation using Euler's approximation
First, there is a mistake in your equation of Euler method n(i+1)=n(i)+T*first(n(i),n2(i),t(i)); % there should be a comma betw...

약 3시간 전 | 0

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.mat file not converting to .csv
Following works in MATLAB M = structfun(@(x) x.', wiki, 'UniformOutput', 0); T = struct2table(M); writetable(T, 'test.csv'); ...

약 3시간 전 | 1

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How to increase the amplitude of a step signal?
Change line to unitstep = 5*(t>=0);

약 4시간 전 | 0

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Me sale el error "Undefined function or variable 'delimitedTextImportOptions'."
delimitedTextImportOptions was introduced in R2018b. You may try to replace it with DelimitedTextImportOptions (the first letter...

약 4시간 전 | 0

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Try this function x_2dot = fcn(u) x_2dot = 0; % initialize to tell simulink about its size J = 0.01; B = 0.1; K = 0.01; R ...

약 7시간 전 | 0

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using fprintf to display multiple values
Change the line to fprintf(' The factorial of %.0f is %.0f\n\n',numlist(i),facn) %...

약 7시간 전 | 0

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How use interp2
You can use interp2 like this sigma = 1:6; OMEGA = 1:10; T = rand(6, 10); interp2(sigma, OMEGA, T.', 4, 5) % (4,5) is a sa...

약 18시간 전 | 0

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trying to plot the graph but getting dots pls help me
Try this B=1; LL=1; n=1:0.25:2; s=0.5:0.5:10; for i = 1:numel(n) for j = 1:numel(s) y(i,j)=1+(n(i)*(0.5513*...

약 18시간 전 | 0

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Writing variables in .csv file and saving it
If you have R2019a or later, you can save the data in a cell array and use writecell() C = {'abc', 1, 'def' 1; 'def', 2, 'rfg',...

약 19시간 전 | 0

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imshow produces error when used in subplot
From your code, it is not clear how did you assign the 2nd element of vector h. However, I recommend initializing 'h' with 'gobj...

약 19시간 전 | 0

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Uninstalling old versions of MATLAB
Each version of MATLAB installs independent files. You can safely delete an older version. Note that if you have saved your own ...

약 20시간 전 | 0

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In first code, 'j' varies from 1 to b for j=1:b In second code, 'j' varies from i to b for j = i:b

약 20시간 전 | 0

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Create a continous stepwise increase in Simulink
You can use the MATLAB function block and a clock to create this signal as shown in the image The code inside the MATLAB func...

약 20시간 전 | 0

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DIfferentiating repetitions in a repeated sequence
Try this x = [1 1 1 1 2 2 2 3 3 3 3 3]; y = splitapply(@(x) {1000*x(1) + (1:numel(x))}, x, x); y = [y{:}]; Result >> y y...

약 21시간 전 | 1

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How to vary the number of fields in inputdlg dynamically?
Something like this n = inputdlg('Number of Zones'); n = str2double(n{1}); prompts = compose('Zone %d', 1:n); y = inputdlg...

약 21시간 전 | 0

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Estimating inputs from outputs in neural networks
You may try fsolve(). However, due to the complexity of a neural network, it is unlikely that it will be able to find a solution...

약 21시간 전 | 0

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How can I find the Power spectral density of a filtered Noise?
This example show how to plot PSD using FFT: https://www.mathworks.com/help/signal/ug/power-spectral-density-estimates-using-fft...

약 21시간 전 | 0

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explict (pointwise) function from numerical solution to implicit equation
Try interp1 to create an explicit relation for 'y' in term of 'x' using the datapoints from fimplicit f = @(x, y) y - x.^2; fp...

약 22시간 전 | 0

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Try this set(handles.raiz,'String',num2str(r)); Convert the numeric value to character value.

약 22시간 전 | 0

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Random numbers around y-values
Try this x = 1:100; y = log(x); noise = (2*rand(size(y))-1).*0.15.*y; y_noise = y + noise; plot(x, y, 'r', x, y_noise, 'b...

약 22시간 전 | 0

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약 22시간 전 | 0

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Phase portrait of a 2 dimensional system that converges to a unit circle
try this dx_dt = @(x,y) (1-(x.^2+y.^2)).*x-3.*y.*(x.^2+y.^2); dy_dt = @(x,y) (1-(x.^2+y.^2)).*y+3.*x.*(x.^2+y.^2); [x, y] =...

약 22시간 전 | 1

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How can we find the internal width of a alphabet?
Try this im = im2double(imread('alif.png')); im_gray = rgb2gray(im); im_bin = imbinarize(im_gray); [row, col] = find(~im_b...

약 23시간 전 | 0

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How to get a column from a text file based on some conditions
Try this data = fileread('test.txt'); data = textscan(data, 'Node %1s: %f'); labels = [data{1}{:}]-64; vals = data{2}; Ar...

약 23시간 전 | 0

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error using "=" in solving equation
That syntax is incorrect in MATLAB. You need to use fsolve() to solve an equation numerically n=2.2; m=1.86; p=0.153; %p is d...

1일 전 | 0

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Try this num=[303 4848 0]; den=[1 16 164]; ea=tf(num,den); subplot(1,2,1) step(ea) [t, y] = ode45(@odeFun, [0 1], [303; ...

1일 전 | 0

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How to create a local function during the code run
Dynamically creating a function name is not a recommended coding practice. Following shows how to do such a thing more efficient...

1일 전 | 1

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How to dramatically speed-up the function plot
I am not sure what is the purpose of using second code is instead of the first when both create the same plots, however, if you ...

1일 전 | 0