Edgar Guevara

CONACYT-UASLP, CIACYT

Last seen: 2 jours ago | Active since 2012

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/

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Number of 1s in a binary string
Find the number of 1s in the given binary string. Example. If the input string is '1100101', the output is 4. If the input stri...

6 jours ago

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Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....

27 jours ago

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Magic is simple (for beginners)
Determine for a magic square of order n, the magic sum m. For example m=15 for a magic square of order 3.

28 jours ago

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Make a random, non-repeating vector.
This is a basic MATLAB operation. It is for instructional purposes. --- If you want to get a random permutation of integer...

28 jours ago

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Return the first and last characters of a character array
Return the first and last character of a string, concatenated together. If there is only one character in the string, the functi...

28 jours ago

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Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

28 jours ago

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Return area of square
Side of square=input=a Area=output=b

28 jours ago

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Generate a vector like 1,2,2,3,3,3,4,4,4,4
Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2...

28 jours ago

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Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

28 jours ago

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Remove the polynomials that have positive real elements of their roots.
The characteristic equation for a dynamic system is a polynomial whose roots indicate its behavior. If any of the roots of the p...

environ un mois ago

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Find state names that start with the letter N
Given a list of US states, remove all the states that start with the letter N. If s1 = 'Alabama Montana Nebraska Vermont Ne...

environ un mois ago

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Get the area codes from a list of phone numbers
Given a string of text with phone numbers in it, return a unique'd cell array of strings that are the area codes. s = '508-647...

environ un mois ago

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the numbers. Otherwise return false. Example...

environ un mois ago

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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

environ un mois ago

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The Piggy Bank Problem
Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...

environ un mois ago

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Test of Quiz
Answer the questions and write in vector. Only one answer is correct. The founder of fuzzy logic is 1a) D. Golberg 1b)...

environ 2 mois ago

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Hard limit function
Classify x data as if x>=0 then y=1 if x<0 then y=0 Example x = [ -2 -1 0 1 2] y = [ 0 0 1 1 1]

7 mois ago

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Is X a Fibonacci Matrix?
In honor of Cleve's new blog and post: <http://blogs.mathworks.com/cleve/2012/06/03/fibonacci-matrices/> Is X a Fibonacci ...

7 mois ago

Submitted

barrier_grid_animation
Barrier grid animation is an effect created by moving a striped transparent overlay across an interlaced image. This file create...

environ un an ago | 1 download |

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Length of the hypotenuse
Given short sides of lengths a and b, calculate the length c of the hypotenuse of the right-angled triangle. <<https://i.imgu...

environ un an ago

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...

plus d'un an 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...

plus d'un an 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...

plus d'un an ago | 0

Submitted

modularArithmetic
Modular arithmetic or modulo multiplication circle

plus d'un an ago | 4 downloads |

Submitted

Implementation of the Vancouver Raman Algorithm
Implementation of the Vancouver Raman Algorithm

plus d'un an ago | 3 downloads |

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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...

plus d'un an ago

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

plus d'un an ago

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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 ...

plus d'un an ago

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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 ...

plus d'un an 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...

plus d'un an ago