Beantwortet
iFFT for Band-pass Measurement
You cannot reconstruct your timeseries unless you have either: 1. Complex values for both positive and negative frequencies. ...

etwa 14 Jahre vor | 0

Beantwortet
Square wave Chirp
Here is an example: signal_length = 20; % length of signal in seconds wave_length = 2*pi; % wavelength of rectangle pulse in ...

etwa 14 Jahre vor | 1

Beantwortet
Constraining a fitted curve
Here is an example using "pchip": a = sort(rand(1,15),'ascend'); b = sort(rand(1,15),'ascend'); x = a(1):0.001:a(end); y...

etwa 14 Jahre vor | 0

Beantwortet
SDOF FRF (FFT) Magnitude discrepancy
I ended up copying your code and running with some modifications. Looks like it will work a little better if you make the sugges...

etwa 14 Jahre vor | 0

Beantwortet
code to implement FSK on sin wave
Someone else did the work for you here: <http://www.edaboard.com/thread133432.html>

etwa 14 Jahre vor | 0

| akzeptiert

Beantwortet
deploytool
You need the MATLAB compiler to do this

etwa 14 Jahre vor | 0

| akzeptiert

Beantwortet
How to show partial legend in figure
To take your first example: h = zeros(1,3); h(1) = plot([1:10],'Color','r','DisplayName','This one');hold on; h(2) = plot...

etwa 14 Jahre vor | 14

| akzeptiert

Beantwortet
genetic programming
Maybe check this out: <http://www.mathworks.com/matlabcentral/fileexchange/13680>

etwa 14 Jahre vor | 0

Beantwortet
Check if matrix has two identical rows
If you want to remove identical rows, then B = unique(A,'rows'); As a check, if size(B) ~= size(A), then you have at least two...

etwa 14 Jahre vor | 1

| akzeptiert

Beantwortet
FRF magnitude calculation
Or... if you want the magnitude and the input data is really just two columns of numbers(second column not specifically formatte...

etwa 14 Jahre vor | 0

Beantwortet
Changing color of single bars in a bar plot
See Jonathan's answer here: <http://www.mathworks.com/matlabcentral/answers/20860-how-to-use-colormap-for-different-bars>

etwa 14 Jahre vor | 1

Beantwortet
How to write comments defining the elements in a 2d array?
>> Yj = rand(3,4) Yj = 0.5447 0.4239 0.1753 0.2433 0.2167 0.8710 0.1654 0.1209 0.8463 ...

etwa 14 Jahre vor | 0

Beantwortet
How can I display 0.0001 as it is, not 1.000e-4
fprintf('%6.4f',myNum) The 6 reserves 6 places including the decimal, the 4 is how many digits to the right of the decimal to...

etwa 14 Jahre vor | 2

Beantwortet
Reading Time/Dates from Excel
I tried creating my own XLS document with date info in column A and time info in column B: 11/9/2010 9:00:00 11/10/2010 10...

etwa 14 Jahre vor | 0

| akzeptiert

Beantwortet
Median() ignoring zeros
Or without for-loop: B = arrayfun(@(k)median(A(A(:,k)~=0,k)),1:size(A,2));

etwa 14 Jahre vor | 0

Beantwortet
how can i blur an image by removing high frequencies of it's DFT
I modified an example I posted earlier. It generates a random 2D image and then applies a simple low-pass filter (i.e., sets hig...

etwa 14 Jahre vor | 0

Beantwortet
Problem with multiple for loops
So after you run the code above (and assuming you initialized "p = 0;" before the code) you get "p" still equal to 0 after the c...

etwa 14 Jahre vor | 0

Beantwortet
fft2 function in matlab
The 2D case is associated with double integration... so the 1D case is single integration. The above answer will simplify down t...

etwa 14 Jahre vor | 4

Beantwortet
fft2 function in matlab
Here is a quick example. I assume a random 2D image where the horizontal axis (columns) represents data collected in space domai...

etwa 14 Jahre vor | 15

| akzeptiert

Beantwortet
How to use the Output function of a Cubic Spline Interpolation?
Example: x = 0:10; y = 5 + 3*x.^2; pp = spline(x,y); int_y = quad(@(xx)ppval(pp,xx),x(1),x(end));

etwa 14 Jahre vor | 2

| akzeptiert

Beantwortet
reading dates and time
Also a neat trick with reading date/time info: date_str = '03/01/2006,08:00:00,40.10,40.42'; date_serial = datenum(date_str,'...

etwa 14 Jahre vor | 0

Beantwortet
solve two equations for two unknown variables
G*m = d G = [f1,f2;f3,f4]; d = [z1;z2]; m = G\d; x = m(1); y = m(2);

etwa 14 Jahre vor | 0

| akzeptiert

Beantwortet
Numerical packing
UGLY/BRUTE-FORCE: I assumed you were trying to minimize the standard deviation of your group sum AND the difference between your...

etwa 14 Jahre vor | 1

Beantwortet
How to work out if there is a cyclic element to data
As a rough start, you can try correlating the time series with sections of itself. For example: % User defined inforation le...

etwa 14 Jahre vor | 0

Beantwortet
read large amount of formatted data
Looks like a similar problem to the one answered here: <http://www.mathworks.com/matlabcentral/answers/23351-parsing-complicate...

etwa 14 Jahre vor | 0

Beantwortet
Generate Square Wave
This should work: dt = 1e-9; % time increment (in seconds) maxtime = 200e-6; % maximum length...

etwa 14 Jahre vor | 0

Beantwortet
Generate Square Wave
signal_length = 20e-6; % length of signal in seconds wave_length = 1.2e-6; % wavelength of rectangle pulse in seconds amplit...

etwa 14 Jahre vor | 0

Beantwortet
Data Frequency Transformation
Try interpolation! doc interp1 Here is an example using "interp1" with the method set to "spline": T = 60*8; % max ...

etwa 14 Jahre vor | 0

| akzeptiert

Beantwortet
Deleted questions
Last time I noticed this, the person had deleted it inadvertently. Very frustrating. However, I am sure that there are some that...

etwa 14 Jahre vor | 1

Beantwortet
Good evening
This was answered yesterday... You will have to save this in your working directory: <http://www.mathworks.com/matlabcentral...

etwa 14 Jahre vor | 0

Mehr laden