# Arturo Moncada-Torres

Biomedical Engineer and volleyball enthusiast driven by improving people's health through the development of novel medical technology.

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**Content Feed**

Submitted

Image Profiler

Generate horizontal and vertical profiles of an image.

4 years ago | 1 download |

Peaks over threshold counting events

Based on your requirements, I would do the following: data = Hs_hr(:,1); thr = 7; % Set data smaller than thresho...

4 years ago | 0

| accepted

Submitted

Create Spectogram of Ripple Stimulus

Generate sample spectogram of a ripple stimulus.

6 years ago | 3 downloads |

how to insert pointers/markers

I think <http://www.mathworks.com/help/releases/R2012a/techdoc/creating_plots/f0-4741.html this> is what you are looking for.

7 years ago | 0

| accepted

Submitted

ECG IIR Notch Filtering with Transient Suppression

Implementation of the ECG IIR notch filtering with transient suppression proposed by Pei and Tseng

7 years ago | 7 downloads |

Dynamic addressing of files and folders for inputting data

I believe |<http://www.mathworks.ch/ch/help/matlab/ref/dir.html dir>| is your best choice. For example, if you are looking for E...

8 years ago | 0

A question about hold images

If I understand correctly, you could just average the images (assuming they have the same dimensions): IAverage = (I1 + I2)...

8 years ago | 0

how to use colormap in matlab?

A very <http://lmgtfy.com/?q=different+colormaps+in+one+image+matlab quick google search> threw this as <http://www.mathworks.ch...

8 years ago | 0

How can I access element with same index from multiple cells

I suggest you to use <http://www.mathworks.ch/ch/help/matlab/ref/cellfun.html cellfun>, which applies a function to each element...

8 years ago | 1

request user to press enter key

You can try Jos's <http://www.mathworks.com/matlabcentral/fileexchange/7465-getkey getkey> function. What this function does is ...

8 years ago | 0

What are the steps for making a 'fft filter'?

Try checking this <http://www.mathworks.com/matlabcentral/answers/9647-use-fft-x-as-a-highpass-filter previous post>. Although i...

10 years ago | 0

How to include a character with a macron (horizontal bar) in a legend?

Complementing Oleg's answer, I include one of the <http://www.mathworks.ch/matlabcentral/newsreader/view_thread/114116 workaroun...

10 years ago | 1

problem with making a very simple matrix

The problem is that you are trying to compare floating point numbers. This is clearly explained in the <http://matlab.wikia.com/...

10 years ago | 0

| accepted

Generating signals

I assume that your binary signal is periodic (+1, -1, +1, -1, ...). You would have to do something like this: % Sampling ch...

10 years ago | 0

Subscript assignment mismatch with the use of 'find'

I recommend you to look at this part of the <http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_...

10 years ago | 1

GUI: how to insert png image with original resolution and transparent background?

To keep your image in its original scale, you have include the following line just after the one where you display the image in ...

10 years ago | 1

How to plot error bars

I would recommend you to take a look at the following FEX submissions: * <http://www.mathworks.ch/matlabcentral/fileexchange/...

10 years ago | 1

filter sampled excel data in matlab

Filtering in MATLAB is something very easy. Take a look at the |<http://www.mathworks.ch/help/toolbox/signal/butter.html BUTTER>...

10 years ago | 1

| accepted

PCA: number of attributes much bigger than number of data samples

I recommend you to look at this <http://matlabdatamining.blogspot.com/2010/02/putting-pca-to-work.html great tutorial> by <http...

10 years ago | 0

How to make matrix a possitive definite

I understand that you may need as few training samples as possible. However, this is not always good, since your performance wil...

10 years ago | 1

| accepted

Standarization before feature selection

It all depends on your application. It is not a golden rule, but can be handy in some cases. For example, let's suppose you wil...

10 years ago | 1

| accepted

Fourier transform of text data

I recommend you to check this <http://blinkdagger.com/matlab/matlab-introductory-fft-tutorial/ wonderful tutorial> by Quan Quach...

10 years ago | 0

correlation b/w to Diode I_V curves

There are several ways to calculate the error. Let's suppose the following: theoretical = 0:10; experimental = awgn(theoret...

10 years ago | 0

problem with if statment

The problem is that _dec2bin_ returns the binary number in a string and *not* in a numeric format. You can try any of these two ...

10 years ago | 0

regarding specific files from folder

Does this solution work for you? I have not tested it, let me know if it works. files = dir('*.h5'); % Find the files with...

10 years ago | 1

| accepted

Chebyshev Type I low pass filter design

I recommend you to use the <http://www.mathworks.com/products/signal/demos.html?file=/products/demos/shipping/signal/introfdatoo...

10 years ago | 0

| accepted

Individual files reading

On a quick thought, it would be something like this: files = dir('*.h5'); % Find the files with extension .h5 in the curre...

10 years ago | 1

| accepted

Anomaly with the number 32??

To know if a cell array is empty, I would recommend you to do the following: myEmptyCells = cellfun(@isempty,cellArray); As ...

10 years ago | 0

How do I display a graph with a calculate function in GUI?

I have tried the following code and it works. The problem is that x and y were not the same size. Insert the following code. ...

10 years ago | 0

| accepted

Retain current directory

I recommend you to check the <http://www.mathworks.com/help/techdoc/ref/cd.html cd function documentation>. On a quick thought, ...

10 years ago | 0