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/

Submitted

modularArithmetic

Modular arithmetic or modulo multiplication circle

20 days ago | 9 downloads |

Submitted

Implementation of the Vancouver Raman Algorithm

Implementation of the Vancouver Raman Algorithm

1 year ago | 10 downloads |

Submitted

Raman spectroscopy to screen diabetes mellitus

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

1 year ago | 10 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...

1 year 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 ...

1 year 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...

1 year 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 ...

1 year 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...

1 year 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

1 year 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...

1 year 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...

1 year 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...

1 year 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...

1 year 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.

1 year ago

Solved

Solitaire Cipher

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

1 year 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 ...

1 year ago

Solved

Find the biggest empty box

You are given a matrix that contains only ones and zeros. Think of the ones as columns in an otherwise empty floor plan. You wan...

1 year ago

Solved

Spot the outlier

All points except for one lie on a line. Which one is the outlier? Example: You are given a list of x-y pairs in a column ...

1 year ago

Solved

Determine whether a vector is monotonically increasing

Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

1 year ago

Answered

Why isn't my line visible on this graph?

Hi lmhall, The circle should be defined as a function of a vector (small *t*), not the 2-Dgrid (capital *T*), so, pleace repl...

Why isn't my line visible on this graph?

Hi lmhall, The circle should be defined as a function of a vector (small *t*), not the 2-Dgrid (capital *T*), so, pleace repl...

2 years ago | 0

Solved

How to subtract?

*± ± ± ± ± ± ± ± ± ± ±* * Imagine you need to subtract one...

2 years ago

Submitted

Estimation of surface-enhanced Raman spectroscopy (SERS) enhancement factor

Estimates surface-enhanced Raman spectroscopy (SERS) enhancement factor.

2 years ago | 3 downloads |

Solved

Find a subset that divides the vector into equal halves

Given a vector x, return the indices to elements that will sum to exactly half of the sum of all elements. Example: Inpu...

3 years ago

Solved

Make a run-length companion vector

Given a vector x, return a vector r that indicates the run length of any value in x. Each element in r shows how many times the ...

3 years ago

Solved

Given a window, how many subsets of a vector sum positive

Given a vector: [1 0 -1 3 2 -3 1] and a window of 2, A sliding window would find: 1 + 0 = 1 0 - 1 = -1 ...

3 years ago

Solved

How many trades represent all the profit?

Given a list of results from trades made: [1 3 -4 2 -1 2 3] We can add them up to see this series of trades made a profit ...

3 years ago

Solved

Counting Money

Add the numbers given in the cell array of strings. The strings represent amounts of money using this notation: $99,999.99. E...

3 years ago

Solved

Which doors are open?

There are n doors in an alley. Initially they are all shut. You have been tasked to go down the alley n times, and open/shut the...

3 years ago

Solved

De-dupe

Remove all the redundant elements in a vector, but keep the first occurrence of each value in its original location. So if a =...

3 years ago

Solved

Balanced number

Given a positive integer find whether it is a balanced number. For a balanced number the sum of first half of digits is equal to...

3 years ago