Answered

Box counting method in a tif image

Hi Arlete, If you could share the image that would be great. Having a look at your code the ~ will turn 'c' into a logical ar...

Box counting method in a tif image

Hi Arlete, If you could share the image that would be great. Having a look at your code the ~ will turn 'c' into a logical ar...

meer dan 2 jaar ago | 0

| accepted

Question

Datatype duration midnight roll over

Hello, I have a table with a series of categorical events and associated timestamp (duration datatype) at which these events ha...

meer dan 2 jaar ago | 2 answers | 0

Answered

From audio signal to mean of frequency responses

Hi Julia, A butterworth filter can be applied with the butter() command as detailed in the documentation. A more intuative app...

From audio signal to mean of frequency responses

Hi Julia, A butterworth filter can be applied with the butter() command as detailed in the documentation. A more intuative app...

meer dan 2 jaar ago | 1

| accepted

Answered

how to open st file

Hi Anastasis, Can I ask what you are working on, I am researching a very similar topic and its always good to chat! In terms o...

how to open st file

Hi Anastasis, Can I ask what you are working on, I am researching a very similar topic and its always good to chat! In terms o...

meer dan 2 jaar ago | 0

Question

Importing a table as (:,1) timedate (:,2) categorical

Hi there, I have used the import functionality in the past without issue, I am currently trying to import a .txt file which con...

meer dan 2 jaar ago | 1 answer | 0

Answered

Remove a set of intervals from an array

Hi Ciara, There are a couple of diffrent ways to do this, as always it depends on speed vs. understanding. A very understandabl...

Remove a set of intervals from an array

Hi Ciara, There are a couple of diffrent ways to do this, as always it depends on speed vs. understanding. A very understandabl...

meer dan 2 jaar ago | 0

| accepted

Question

Parrellel server dir() for files local to the server

Hello, I wish to move computation from a local machine with .m files stored locally to a parrellel compute server with the .m ...

meer dan 2 jaar ago | 1 answer | 0

Answered

I want to include a variable in my figure title when I save to a directory.

Hi Sandra, Yes this is possiable, you can either use strcat() to 'build' the title string first or just use title(), it'll look...

I want to include a variable in my figure title when I save to a directory.

Hi Sandra, Yes this is possiable, you can either use strcat() to 'build' the title string first or just use title(), it'll look...

meer dan 2 jaar ago | 0

Answered

How to add noise in [0 2] interval to an elements of an array randomly?

Hi Ayberk, Have you tried awgn(r1)? r1Gaus = awgn(r1); Kind regards, Christopher

How to add noise in [0 2] interval to an elements of an array randomly?

Hi Ayberk, Have you tried awgn(r1)? r1Gaus = awgn(r1); Kind regards, Christopher

meer dan 2 jaar ago | 0

Answered

How can i add variable load to my source

Hi Srikanth, If you want this model to run with respect to time you should inlude a 'clock' block. To get the loads to turn o...

How can i add variable load to my source

Hi Srikanth, If you want this model to run with respect to time you should inlude a 'clock' block. To get the loads to turn o...

meer dan 2 jaar ago | 0

Answered

How to create readable decision trees

Hi Awais, I had a similar problem with Markov chains recently. I ended up using digrapgh() to solve the problem, that being sai...

How to create readable decision trees

Hi Awais, I had a similar problem with Markov chains recently. I ended up using digrapgh() to solve the problem, that being sai...

meer dan 2 jaar ago | 0

Question

pcolor - Numeric Ruler -> limits and scale commands

Hi, I have a cwt figure plotted with pcolor. I can open the property inspector on the figure and manually change the "Scale" pr...

meer dan 2 jaar ago | 1 answer | 0

Answered

Can I add a toolbox to a pre-R2022a installation via the Add-On Manager?

Hi Will, As far as I am aware you still should be able to get the PCT from the add-on manager via the "Install button". Have yo...

Can I add a toolbox to a pre-R2022a installation via the Add-On Manager?

Hi Will, As far as I am aware you still should be able to get the PCT from the add-on manager via the "Install button". Have yo...

meer dan 2 jaar ago | 0

| accepted

Question

Fixed node locations using graphplot() with Markov chains

Hi, I have developed a few lines of code to generate markov chains from a transition vector ('stagesVec'). The code works well...

meer dan 2 jaar ago | 1 answer | 0

Answered

Finding formants in speech signal

I Piesioslaw, To recalculate your axis have a look at my example below; % Compute a 1024 point fft for my signal ecgcleanNoDC...

Finding formants in speech signal

I Piesioslaw, To recalculate your axis have a look at my example below; % Compute a 1024 point fft for my signal ecgcleanNoDC...

bijna 3 jaar ago | 0

Answered

How to find elements in an array faster / without using for loop?

Hi Jan, The 'ismember' function should be able to do this! Christopher

How to find elements in an array faster / without using for loop?

Hi Jan, The 'ismember' function should be able to do this! Christopher

bijna 3 jaar ago | 1

Question

Truncated SVD returns unexpected 1*1 result

Hi, I am currently prefoming SVD on six channels varying in time of the same type of biometric data. The recorded channels are ...

bijna 3 jaar ago | 1 answer | 0

Question

rdann cannot find file on specified path (Physionet wfdb)

Hi there, I am working with physionet data (2018 you snooze you loose compitition) and the wfdb toolbox. I am trying to use the...

bijna 3 jaar ago | 0 answers | 0

Answered

Unable to install the add-on. Try again later.

Hi Vivek, I had the same issue but installed the toolbox manually and it worked fine. Here is a link to instructions on how to....

Unable to install the add-on. Try again later.

Hi Vivek, I had the same issue but installed the toolbox manually and it worked fine. Here is a link to instructions on how to....

bijna 3 jaar ago | 0

Question

PCA output gives NaN after normalizing input matrix

Hello, I have an array of 117 features and 125941 observations. I preformed principle component analysis via svd(x) (code below...

bijna 3 jaar ago | 1 answer | 0

Answered

student license and simpower library

Open matlab -> Add-ons -> SimScape Electrical/ Simscape power systems (is what I think you are looking for)

student license and simpower library

Open matlab -> Add-ons -> SimScape Electrical/ Simscape power systems (is what I think you are looking for)

bijna 3 jaar ago | 0

Question

Principle Component Analysis/ Singular value decomposition; great with ovariancancer dataset terrible with my data

Hello, I am currently getting to grips with PCA, I came accorss a great tutorial from Steve Brunton on its use with matlab. Thi...

bijna 3 jaar ago | 0 answers | 0

Answered

When using the 1D convolution example code from MATLAB am getting an error about incorrect use of '='.

Hi Joseph, If you have a look at the docuementation it calls for named pairs for input, this would look something more along th...

When using the 1D convolution example code from MATLAB am getting an error about incorrect use of '='.

Hi Joseph, If you have a look at the docuementation it calls for named pairs for input, this would look something more along th...

bijna 3 jaar ago | 0

Answered

Word recognition power frequency domain

Hi Leon, From what I can understand you are looking for the local maximums, however this returns vectors of varying lengths? ...

Word recognition power frequency domain

Hi Leon, From what I can understand you are looking for the local maximums, however this returns vectors of varying lengths? ...

bijna 3 jaar ago | 0

| accepted

Question

Table of Tables or cell of Tables

Hi, I am preforming machine learning on 13 channels of data and am currently at the feature extraction stage. I have created 13...

bijna 3 jaar ago | 1 answer | 0

Question

3D array, remove columns where second array == -1

Hi, I am curently processing 13 channels of PSG data. I take my data and create 10 second buffers with 5 second overlaps for th...

bijna 3 jaar ago | 1 answer | 0

Answered

sample Matlab COM object for C# .NET Framework application

Hi, The MATLAB documentation has lots of examples and documentation to get you going. Here's a link to an example. And a se...

sample Matlab COM object for C# .NET Framework application

Hi, The MATLAB documentation has lots of examples and documentation to get you going. Here's a link to an example. And a se...

ongeveer 3 jaar ago | 0

Question

Array prealocation - Extra array of zeros in 3D array

Hi, I have a 13 channel signal recorded over several hours. I wish to take all channels, split them into 10 second windows wit...

ongeveer 3 jaar ago | 1 answer | 0

Answered

How to know the gain value used in this controller when I know the input and output of the pid controller

Mathematically speaking gain is the output divided by the input of a system. The next question is if this produces a linear or n...

How to know the gain value used in this controller when I know the input and output of the pid controller

Mathematically speaking gain is the output divided by the input of a system. The next question is if this produces a linear or n...

ongeveer 3 jaar ago | 0