Paulo Silva

Aktiv seit 2010

Followers: 0 Following: 0

Kontakt

Just done my Masters degree in Control and Industrial Electronics, I also have one licenciates degree in Electrical Engineering and Computer Science.

I love to use MATLAB and to help others using it, everyday I learn something new.

Currently teaching and supporting students with several projects that use MATLAB for Biomedical Imaging.

Please don't send me emails asking for code or help, I will only help the best I can here at MATLAB Answers.
Professional Interests: Control engineering, biking, growing organic food, permaculture student (nature is my teacher)

Statistiken

All

Abzeichen anzeigen

Feeds

Beantwortet
Exponential transfer function
<http://www.mathworks.com/help/control/ug/models-with-time-delays.html Models with time delays>

etwa 9 Jahre vor | 0

| akzeptiert

Beantwortet
Looking for example code for Minimum Variance Control Systems
<http://www.amazon.com/Computer-Controlled-Systems-Theory-Electrical-Engineering/dp/0486486133/ref=sr_1_1?s=books&ie=UTF8&qid=14...

etwa 9 Jahre vor | 0

Beantwortet
Getappdata and setappdata
<http://blogs.mathworks.com/videos/2011/11/23/passing-data-between-guide-callbacks-without-globals-in-matlab/ Passing data betwe...

fast 10 Jahre vor | 0

Beantwortet
Draw polar curves
t=0:0.01:2*pi; polar(t,abs(sin(t/2).*cos(t/2)));

mehr als 12 Jahre vor | 0

| akzeptiert

Beantwortet
Simulink bit operations
[1 0]------>Gain(-1)----->[-1 0] Use the Gain block and define that gain as -1

mehr als 12 Jahre vor | 0

Beantwortet
Generate Square Wave
Here's my crazy way to do it, I'm assuming some values for example the sampling time. This way doesn't require any toolboxes, an...

mehr als 12 Jahre vor | 1

Beantwortet
Transfer Function in Simulink
Use those variables (a and b) in the simulation, define them in the workspace with default values before the simulation starts ...

mehr als 12 Jahre vor | 0

| akzeptiert

Beantwortet
multiple bode plots on same graph
Maybe something with *hold on*?! g = tf([1 0.1 7.5],[1 0.12 9 0 0]); bode(g) hold on g = tf([1],[1 0.12 9 0 0]); ...

mehr als 12 Jahre vor | 1

Beantwortet
vectors from array
a=randi(5,3,5) %sample array %put all columns of the array in diferent cells b=arrayfun(@(x)a(:,x),1:size(a,2),'un...

mehr als 12 Jahre vor | 0

Beantwortet
Reset button
set(findobj(0,'style','edit'),'string','') %put this in the button callback %that should clear all edit uicontrols or s...

mehr als 12 Jahre vor | 2

Beantwortet
Repetition of rows of a matrix maintaining the number of columns
A=[ 1 2 3 4 5 6] N=1; %number of repeats kron(A,ones(N+1,1))

mehr als 12 Jahre vor | 1

Beantwortet
Frequence of the signal
From the MATLAB documentation of the fft function: Fs = 1000; % Sampling frequency T = 1/Fs; ...

mehr als 12 Jahre vor | 0

Beantwortet
compute number of pulses for ECG signal
Find the number of peaks with the Signal Processing Toolbox™ *findpeaks* function or one similar function from the <http://www.m...

mehr als 12 Jahre vor | 0

Beantwortet
MATLAB - Stop execution of .m file while Simulink is running
Use the Simulink *sim* function instead to start the simulation, that way after the simulation is over the code continues execut...

mehr als 12 Jahre vor | 1

Beantwortet
How to divide and times in matlab
1/sqrt(R^2+(w*L-1/(w*C))^2) if perhaps you are working with arrays or vectors and you want the operations to be performed ele...

mehr als 12 Jahre vor | 1

Beantwortet
Are you convert matlab code to visual basic code form for me, please?
clc,clear all x = 0:0.2:1; % get a dimensional array of real number type fid = fopen('dene3.txt','w';); ...

mehr als 12 Jahre vor | 0

Beantwortet
finding a mathematical function that passes from specified points
x=[10 30 50 100 125 250 350 500 550 750 1000]; y=[91 92 93.2 93.5 94 95.2 95.4 95.1 95 94.5 93.8]; plot(x,y,'o') n=8;...

mehr als 12 Jahre vor | 1

| akzeptiert

Beantwortet
Comparing two matrices, and acting upon the result element by element.
A=randi(5,3,3) B=10*randi(5,3,3)+5 v=2 %your specific value A(A==v)=B(A==v) %replace elements of A equal t...

mehr als 12 Jahre vor | 0

| akzeptiert

Beantwortet
Using Figure
doc subplot example t=0.01:0.01:1; x=rand(100,2); subplot(211) plot(t,x(:,1),'red','linewidth',2 ) xlabel('Time (s...

mehr als 12 Jahre vor | 1

Beantwortet
how do I reshape an array into a matrix that has dimensions of (user indicated number) by 4?
parameter =[1 2 3 4 1 2 3 4 1 2 3 4] reshape(parameter,4,3)

mehr als 12 Jahre vor | 0

Beantwortet
Creating a distance matrix in Matlab?
On the Neural Network Toolbox™ you have the mandist function that seems to do what you need, if you don't have that toolbox try ...

mehr als 12 Jahre vor | 0

Beantwortet
Matrix - empty selected cells
You might encounter problems when removing values from array because the dimensions must be consistent M = [ 1.23 1.34-4i 275...

mehr als 12 Jahre vor | 0

Beantwortet
Create Labview/Simulink like environment with GUIDE?
I'm not familiar with Labview but I made several GUI's that control Simulink simulations, you can have something like this <http...

mehr als 12 Jahre vor | 0

Beantwortet
Help needed displaying multiple plots (and maybe preassigning too)
doc hold %allows you to have more than one plot on a axes doc subplot %if you want more than one axes on a figure <ht...

mehr als 12 Jahre vor | 0

Beantwortet
output
A=[20 30 40 50] MATLAB index values start at 1 not 0

mehr als 12 Jahre vor | 0

Beantwortet
Detect P-code
Maybe this: a=dbstack('-completenames'); if (isempty(strfind(a.file,'.m'))) disp('pcode') else disp('mfile') ...

mehr als 12 Jahre vor | 0

| akzeptiert

Beantwortet
In an assignment A(I) = B, the number of elements in B and I must be the same.
syms t x=-3:.1:3; for i=1:length(x); Pin=3*exp(-t^2); z=x(i); Eo(i)=int(Pin,t,-inf,z); ...

mehr als 12 Jahre vor | 0

Beantwortet
Return the number of rows of an array of cell data
doc cellfun

mehr als 12 Jahre vor | 0

Beantwortet
Expression (equation)
Simplest version I can think of t=0:0.1:100; % Time vector A=0.1; % Value of A that you can c...

mehr als 12 Jahre vor | 0

| akzeptiert

Beantwortet
problem in using symbols
doc vpa %just a wild guess of something that might be useful to you

mehr als 12 Jahre vor | 0

Mehr laden