Answered
How to add a noise in my Input graph?
this code gives a zero mean noise with a sampling rate equal to your signal. just calculate it's amplitude by knowing variance. ...

4 years ago | 0

| accepted

Answered
Simulink animation for BLDC motors
I didn't see anything about animate in that video. however I propose after running the simulation, save your data including time...

4 years ago | 1

| accepted

Answered
Computing voltage and current amplitude and average power
if they are 3-phase, use clarke transformation. it will give you the amplitude and phase the dividing by sqrt(2) yield the rms v...

4 years ago | 0

| accepted

Answered
Invalid setting for input port dimensions of 'without_statcom/Asynchronous Machine pu Units/Measurements/Demux1'. The dimensions are being set to [-1]. This is not valid because the total number of input and output elements are not the same
hello. you need to set number of elments in Demux1 correctly. when you run simulation look at the input signal it says for examp...

4 years ago | 0

Answered
plot error variables not same length
try this if could resolve the problem. I have selected those elemnts of "y_fft" corresponding to "f" vector. plot(f, y_fft(1:le...

4 years ago | 0

| accepted

Answered
i have a syntax error in u(3)-u(4)(exp((u(2)u(1)+u(6))))/(u(5))-1) what the error ?
you didn't have product sign"*". also there were bunch of incorrect parantheis. copy and paste should work. u(3)-u(4)*(exp(u(2)...

4 years ago | 0

Answered
Image processing: transition between two halves of an image
you must define the dim factor in a way that is 1.between 0 and 1, 2. it has smooth transition. for example here in order t...

4 years ago | 0

| accepted

Answered
vectors problem, como podria unir los vectores
hola, es esto lo que esperas? A = [1 0 0 0 0 1 1 0 1 0 0 1 1 1 1 0 0 0 1 0 1 0 0]; B = [2 0 2 2 2 0 2 0 2 2 0 0 2 0 2 2 0 0 0 ...

4 years ago | 0

| accepted

Answered
ASSISTANCE ON RUNNING RANDOM VARIABLES IN A FUNCTION
I assumed that "y" must not be a constant since you have dy/dt. therefore I made it an input for the function % define your con...

4 years ago | 0

| accepted

Answered
Calculate mean of a matrix columnwise if a condition is met
A = [10 10 10;10 5 5;10 5 5] b = 10 C = b - A C(A>=b) = nan % replace all data out of specified range by nan mean(C,'omitnan...

4 years ago | 0

| accepted

Answered
Spectral Entropy vs Frequency
using fft (Fast Fourier Transform). I'll give you an example. suppose you have a discrete signal called "x[n]" that has been sa...

4 years ago | 0

Answered
Sending/calling every row of matrix to another function from current function
[N,~] = size(TruncatedSubstring); % N = number of rows for i=1:N substring = TruncatedSubstring(i,:) Result(i,:) = ...

4 years ago | 0

| accepted

Answered
textscan format string for hours:minutes
this works for me. I'm using 2016a. txt = '00:01'; result = textscan(txt, '%{mm:ss}D') result = [00:01] if you can't d...

4 years ago | 0

| accepted

Answered
Solving system of equations
you must first define the unknowns in your system of equations. it seems you have 12 equations and therefore you must have 12 un...

4 years ago | 1

Answered
Importing a signed integer value with a space
if your data are all positive, then you can ignore plus sign. and your data is not integer use single or double precion. here's ...

4 years ago | 0

| accepted

Answered
Smooth data to get the best approximation.
I used curve fitting app you can workaround and change settings to get your result.

4 years ago | 0

| accepted

Answered
Directly converting uint16 image sequence to .avi video file
it seems the function does not support uint16, but it accepts images of type single and double precision. convert your image fra...

4 years ago | 0

| accepted

Answered
How to generate random smooth 2D closed curves/shapes
If you are familiar with bezier curve, you can do it easily by setting random values for points coordinates.

4 years ago | 1

Answered
How to import part of the data from multiple .txt files into the MATLAB workspace as a variable
fileID = fopen('685_FM01_HF_7-21-2020.txt'); % open first text file c1 = textscan(fileID,'%f %f','Delimiter',','); % scan it ...

4 years ago | 0

| accepted

Answered
Plotting 3D grating
I think this is what you're looking for x = [1 2 2 3 3 4 4 5 5 6]; z = [0 0 1 1 0 0 1 1 0 0]; y = [1 4]; [X,Y] = meshgrid(x,...

4 years ago | 0

| accepted

Answered
Models based on singular value decomposion
load your dataset from your excel file using this command: "A = csvread(filename)". then you can do anything and ofcourse matl...

4 years ago | 0

| accepted

Answered
Fading/shading an image
A = imread('lena.bmp'); % read rgb image named 'lena.bmo' figure(1);imshow(A) % show the original image in figure1 dim = l...

4 years ago | 0

| accepted

Answered
How to determine the two closest values to a threshold value
%% nearest value considerin it is bigger or smaller than threshold m1 = min(y(y>0.9)) % nearest value after threshold m2 = max...

4 years ago | 2

| accepted

Answered
How to copy cell data to a matrix?
the problem is with the date/time format which contains ":" and "-'. if you need matrix you can simply avoid these. c=''; file...

4 years ago | 0

| accepted

Answered
How to get a solid circle encircled by another circle and solid circle encircled by a square
x = 1; y =2; figure(1) plot(x,y,'o','MarkerSize',20) hold on plot(x,y,'o','MarkerFaceColor', 'k') figure(2) plot(x,y,'s'...

4 years ago | 0

| accepted

Answered
atan2(0,0) is not undefined (NaN)
it is not a bug. although in analytic math it is undefined, the trigonometric functions are usually calculated by their taylor s...

4 years ago | 0

Answered
for loop for matrix
x = [1, 2, 5] y = [0.1, 0.5, 10] z = [10 20; 30 40] X = repmat(x,[4 1]) Y = repmat(y,[4 1]) Z = repmat(z(:),[1 3]...

4 years ago | 1

Answered
Extracting matrix from mat file
I assume you have an "x" and a "y" rectangular grid point coordinates, and "A" contains "f(x,y)" data. in this case "x" is a row...

4 years ago | 0

| accepted

Answered
y1=(t1==0)
if "t1" is a vector like this: t1 = [-2 -1 0 +1 +2] then "t1==0" is a vector of same size which replaces any non-zero value by...

4 years ago | 0

Answered
Add values to the i-th position of a table/double
if you are trying to insert xsim1 between x(i) and x(i+1) without any data loss, write this code: x = [x(1:i), xsim, x(i+1:end)...

4 years ago | 0

| accepted