# 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.

mer än 4 år 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...

mer än 4 år ago | 0

| accepted

Submitted

Create Spectogram of Ripple Stimulus

Generate sample spectogram of a ripple stimulus.

ungefär 6 år ago | 4 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.

mer än 7 år 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

nästan 8 år ago | 9 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...

mer än 8 år 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)...

mer än 8 år 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...

mer än 8 år 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...

mer än 8 år 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 ...

mer än 8 år 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...

mer än 10 år 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...

mer än 10 år 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/...

mer än 10 år 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...

mer än 10 år 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_...

mer än 10 år 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 ...

mer än 10 år 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/...

nästan 11 år 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>...

nästan 11 år 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...

nästan 11 år 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...

nästan 11 år 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...

nästan 11 år 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...

nästan 11 år 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...

nästan 11 år 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 ...

nästan 11 år 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...

nästan 11 år 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...

nästan 11 år 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...

nästan 11 år 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 ...

nästan 11 år 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. ...

nästan 11 år 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, ...

nästan 11 år ago | 0