Khalid Mahmood

Last seen: 2 giorni fa | Attivo dal 2021

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Coding, simulation and mex functions programming for various problems in Matlab. Especially image processing, computer vision and deep learning

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Every program in newer versions of Matlab runs slower, Why?
Every program in newer versions of Matlab runs slower and slower. I have measured with external stop watches also. And it does ...

oltre 2 anni fa | 1 risposta | 1

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Image box or rectangle color
I hope you want this set(gcf,'Units','normalized') im=imread('peppers.png'); imshow(im); k = waitforbuttonpress; rect_pos =...

quasi 3 anni fa | 1

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Matlab finds webcam, but says after running the code it is invalid
try these 3 commands: 1) clear all 2) imaqreset 3) Then a) cam =webcam b) preview cam

quasi 3 anni fa | 1

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To find running average using vectorized method
Check this https://www.mathworks.com/matlabcentral/answers/806006-defining-the-mean-of-a-values-inside-a-matrix?s_tid=srchtitle...

quasi 3 anni fa | 1

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Happy Birthday Animation with changing colors
I hope this will be great example for you function f=Animate(str,chr) %string that rotates along central character if nargin<2...

quasi 3 anni fa | 1

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Happy Birthday Animation with changing colors
Like Following? function f=Animate(str,chr) %string that rotates along central character if nargin<2 chr='🌺';%🕐🕑🕒🕓🕔🕕🕖🕗🕘 %...

quasi 3 anni fa | 1

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sum of series. Vectorised (no loop)
% To reduce 2 more lines function s=vsum(n) if nargin<1 s=1; return end if mod(n,2)==0, n=n-1;end s=1+sum(1./[3:2:n] -...

quasi 3 anni fa | 1

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Mouse events starter program for Matlab gui
I have made a simple figure to detect keyboard and mouse events. It will work as a starter for events proessing on GUI. My code ...

circa 3 anni fa | 1

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defining the mean of a values inside a matrix
Further methods 1: movmean(matrix,windowsize) it calculates running mean but considers only windowsize elements examples...

circa 3 anni fa | 1

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Serial ports list display
You can easily display ports list in compact format pa=['all Serial Ports' serialportlist]; pav=['available Ports' serialportl...

circa 3 anni fa | 1

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I have two plots, I want to take the difference between two plots using histogram function. how can I take difference using both x and y axis
I have created an example for 1D histogram (histogram using single vector), histogram2 (2D histogram using 2 vectors), imhist(hi...

circa 3 anni fa | 1

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Mouse Button Press distinction
SelectionType property of figure tells which mouse button was pressed along with modifier (ctrl or shift). Normal: Left Mous...

circa 3 anni fa | 2 risposte | 1

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How can I delete the rows if they have a NaN value?
Let Matrix A has NaN values, we want a matrix B which contains all rows of A except which have NaN values function testNaNRemov...

circa 3 anni fa | 1

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MATLAB GPU Processing: AMD Radeon
To select an NVIDIA GPU 1) Go to site: https://developer.nvidia.com/cuda-gpus, and select a GPU according to your needs https...

circa 3 anni fa | 1

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Date time conversion problem
Don't specify as T19:00:00. Oly T19:00 is enough. Furthermore use T:HH:mmXXX instead of TH:mm:ss following code works fine. a....

circa 3 anni fa | 1

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Has some one implemented SiamMask trackers in matlab?
I found matlab more useful than python for simulating, implementing and compiling visual trackers.A lot of useful trackers built...

circa 3 anni fa | 0 risposte | 0

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I want to plot from -5 to 5 on the x and y, but I am having trouble. Any help?
%Hope you need this. I mean just plot mesh also %mesh Lim=-5:.5:5; %both x,y have same limits [x y]=meshgrid(Lim); % calcula...

circa 3 anni fa | 1

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Sketching a tangent plane to the given equation
Lim=sqrt(5/2); inc=2*Lim/99; %100 incremets [X,Y] = meshgrid(-Lim:inc:Lim); ZFunc= @(x,y) real(sqrt(5-x.*x-y.*y)); Z=ZFunc(X,...

circa 3 anni fa | 1

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How to enter negative values and values greater than 9 in input with string.
%for 10 values, while ii<11 is needed whe we start with ii=1, and %string(teste) to convert character array into string clear,...

circa 3 anni fa | 1

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Using fsolve to find circle intersection
convert 2 equations into 2 functions F(1),F(2) . This is one way but other ways like F=@x [ eq1; eq2] can also be used. functio...

circa 3 anni fa | 1

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Mysterious tangent line on my plots
v(1)=2; %initial v=v0=vi a(1)=9.8; %g n=40; dt=2.5; %use values like dt 0.1, 0.5 1.1,1.5, 2, 2.5, 5 and see the result D=1;r...

circa 3 anni fa | 0

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How can I fix this error?
function y=Question5(x) y=[]; rows=size(x,1); y(1,:)=x(1,:); for i=2:rows y(i,:)=x(i,:)-x(1,:); end end

circa 3 anni fa | 1

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How can I fix this error?
function y=Question5(x,i) y=[]; if i==1 y=x(1,:); else y=x(i,:)-x(1,:); end end

circa 3 anni fa | 0

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How to select complementary elements from a vector?
%Another but lengthy way is as follows: %Vector 1 d = [3 2 1 5 6 7 8 9 0]; %Another vector containing the indices, which must...

circa 3 anni fa | 1

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Selecting range of data in a matrix
%Generate M 2784x1 matrix of unformly distributed random intergers ranging from 100 to 9999 M=randi([100 9999],2784,1) rangeA...

circa 3 anni fa | 1

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IF statement wrongly checked
clear all %close all, %no need to close all, as nothing was opened by this code.. no figure, port etc f = 17.5*10^9; %same ...

circa 3 anni fa | 1

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Why do I receive an error when I try to use my Matrox morphis with the Image Acquisition Toolbox?
Clearly format : RGB32_-1442840129x1515803904 is invalid It must be like RGB32_720x480. But 1442840129x1515803904 is huge Res...

circa 3 anni fa | 0

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