Edgar Guevara is currently a CONACYT research fellow at CIACYT-UASLP. His research areas are optical imaging, functional connectivity, spectroscopy and biomedical signal processing. His current research interests are in non-invasive medical diagnosis. His past work includes research in epilepsy, cardiovascular disease, spinal cord injury and white matter injury in newborns. He received his PhD degree in Biomedical Engineering at École Polytechnique de Montréal in 2014, with a special mention of the jury.

https://sites.google.com/site/edgarguevara/

Answered

Finding the t values of the Student's t test (t1-α,ν)

The t-value is inside the STAT structure, consider the following example: X = rand([100, 1]); Y = rand([100, 1]); [H,P,CI,STA...

Finding the t values of the Student's t test (t1-α,ν)

The t-value is inside the STAT structure, consider the following example: X = rand([100, 1]); Y = rand([100, 1]); [H,P,CI,STA...

4 months ago | 0

Answered

Plotting 2 lines in the same graph

Modify the last lines of your code: disp(['Time taken to reach ground (with NO drag) = ', num2str(t), ' seconds']) disp(['Tota...

Plotting 2 lines in the same graph

Modify the last lines of your code: disp(['Time taken to reach ground (with NO drag) = ', num2str(t), ' seconds']) disp(['Tota...

4 months ago | 0

Answered

plotting frequency distribution of fft2 transformed image...

I believe that the following example may be useful: % spatial frequency (SF) filtering clear; close all; clc; filename = 'ima...

plotting frequency distribution of fft2 transformed image...

I believe that the following example may be useful: % spatial frequency (SF) filtering clear; close all; clc; filename = 'ima...

5 months ago | 0

Submitted

modularArithmetic

Modular arithmetic or modulo multiplication circle

7 months ago | 1 download |

Submitted

Implementation of the Vancouver Raman Algorithm

Implementation of the Vancouver Raman Algorithm

7 months ago | 4 downloads |

Solved

Interpolator

You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

8 months ago

Solved

Kaprekar Steps

6174 is the <http://en.wikipedia.org/wiki/6174_%28number%29 Kaprekar constant>. All natural numbers less than 10,000 (except som...

8 months ago

Solved

The Goldbach Conjecture, Part 2

The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

8 months ago

Solved

Find common elements in matrix rows

Given a matrix, find all elements that exist in every row. For example, given A = 1 2 3 5 9 2 5 9 3 2 5 9 ...

8 months ago

Solved

Find the two-word state names

Given a list of states, remove all the states that have two-word names. If s1 = 'Alabama Montana North Carolina Vermont N...

8 months ago

Solved

Who is the smartest MATLAB programmer?

Who is the smartest MATLAB programmer? Examples: Input x = 'Is it Obama?' Output = 'Me!' Input x = 'Who ?' Ou...

8 months ago

Solved

Find the peak 3n+1 sequence value

A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

8 months ago

Solved

Return the 3n+1 sequence for n

A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

8 months ago

Submitted

collatz

Checks for the Collatz conjecture for a given number

10 months ago | 3 downloads |

Submitted

Raman spectroscopy to screen diabetes mellitus

Raman spectroscopy is used non-invasively to screen diabetic patients, using ANN, PCA & SVM

2 years ago | 7 downloads |

Solved

Make a Palindrome Number

Some numbers like 323 are palindromes. Other numbers like 124 are not. But look what happens when we add that number to a revers...

2 years ago

Solved

Alphabetize by last name

Given a list of names in a cell array, sort the list by the last name. So if list = {'Barney Google','Snuffy Smith','Dagwood ...

2 years ago

Solved

Read a column of numbers and interpolate missing data

Given an input cell array of strings s, pick out the second column and turn it into a row vector of data. Missing data will be i...

2 years ago

Solved

Pizza order

A pizza order by phone in diameter d1, pizza will be make only in diameter d2. Return the pizza pieces p should be make.(pizza ...

2 years ago

Answered

how to display spectrogram of a audio in App Designer

Dear Austin, You need to specify which axes will be used for plotting, inside a callback for plotting such spectrogram, you m...

how to display spectrogram of a audio in App Designer

Dear Austin, You need to specify which axes will be used for plotting, inside a callback for plotting such spectrogram, you m...

2 years ago | 1

| accepted

Answered

i can't locate matlab2015\sys\os folder in matlab2015 and keep getting error [matlab has encountered an internal problem and needs to close 2015]

Try looking in your folder C:\Program Files\MATLAB\R2015\sys

i can't locate matlab2015\sys\os folder in matlab2015 and keep getting error [matlab has encountered an internal problem and needs to close 2015]

Try looking in your folder C:\Program Files\MATLAB\R2015\sys

2 years ago | 0

Solved

Find indices of diagonal elements

Given a matrix A and a diagonal index d (where 0 indicates the main diagonal and off-diagonals are identified by positive and n...

2 years ago

Solved

Return all matrix elements except elements on diagonal

Consider a given Matrix A=[a b c; d e f; g h i] then return a row vector T such that it contains all the El...

2 years ago

Solved

poll: would you like the regexp (?@cmd) functionality to be banned in Cody?

This problem is a poll (and a little bit of "white hat hacktivism" as well) regarding Cody users sentiment about the use of rege...

2 years ago

Solved

Flag largest magnitude swings as they occur

You have a phenomenon that produces strictly positive or negative results. delta = [1 -3 4 2 -1 6 -2 -7]; Marching thr...

2 years ago

Solved

Sum all integers from 1 to 2^n

Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

2 years ago

Solved

Solitaire Cipher

Implement the <http://en.wikipedia.org/wiki/Solitaire_(cipher) solitaire cipher>. Since this is from Wikipedia, I am capturin...

2 years ago

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN

Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

2 years ago