Andrew Horchler

Last seen: Today | Actif depuis 2012

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We're going to the Moon! I'm the Chief Research Scientist at Astrobotic heading their Future Missions and Technology team (https://astrobotic.com/technology). My Ph.D. in Mechanical Engineering at Case Western Reserve University was in the area of biologically inspired robotics with particular interests in mechanical design, soft robotics, dynamical systems, computational neuroscience, and numerical simulation. I have over 25 years of experience with Matlab and C.

Programming Languages:
Python, C++, C, Javascript, MATLAB, HTML, CSS, Arduino, Shell
Spoken Languages:
English, French

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A résolu

Toeplitz Matrix
For a given square matrix of order n-by-n check whether this is a Toeplitz matrix or not. Return true if it is.

6 jours il y a

A résolu

Mysterious digits operation (easy)
What is this digit operation? 0 -> 0 1 -> 9 121 -> 9 44 -> 6 15 -> 5 1243 -> 7 ...

6 jours il y a

A soumis

SDETools
Matlab Toolbox for the Numerical Solution of Stochastic Differential Equations (SDEs)

plus de 3 ans il y a | 19 téléchargements |

A soumis

sgolayfilt
Savitzky-Golay differentiation filters

environ 6 ans il y a | 6 téléchargements |

A soumis

wrightOmegaq
Complex double-precision evaluation of the Wright omega function

environ 7 ans il y a | 1 téléchargement |

A soumis

waittext
Display updating line of text or textual waitbar in Matlab Command Window

environ 7 ans il y a | 1 téléchargement |

A soumis

quasicrystal
Generate movie, animated GIF, or image of a quasicrystal via sum of plane waves

environ 7 ans il y a | 2 téléchargements |

A soumis

rgb2map
Convert RGB colors to indexed colormap colors

environ 7 ans il y a | 1 téléchargement |

A soumis

QTWriter
Export QuickTime Movies with Matlab

environ 7 ans il y a | 1 téléchargement |

A soumis

notify
Display OS X notification message window from Matlab

environ 7 ans il y a | 1 téléchargement |

A soumis

int2bin - bin2int
Convert integer datatype to a binary string and back

environ 7 ans il y a | 4 téléchargements |

A soumis

polyfitsym
Fit symbolic polynomial to data

environ 7 ans il y a | 2 téléchargements |

A soumis

char2hex - hex2char
Convert decimal integer string to hexadecimal representation and back

environ 7 ans il y a | 3 téléchargements |

A soumis

circfit
Matlab function for least squares fitting of X-Y data to a circle

environ 7 ans il y a | 36 téléchargements |

A soumis

cdiff
First- and second-order complex step derivative approximation

environ 7 ans il y a | 2 téléchargements |

A soumis

DynamixelTools
Matlab Toolbox to control ROBOTIS Dynamixel actuators with the OpenCM9.04 microcontroller

environ 7 ans il y a | 4 téléchargements |

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rigidtform
Optimal rotation and translation between corresponding points

environ 7 ans il y a | 3 téléchargements |

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Passive-Dynamic-Walking
Simulation and animation of simple passive dynamic walking models

presque 8 ans il y a | 5 téléchargements |

A soumis

hypergeomq
Fast evaluation of the generalized hypergeometric function

environ 8 ans il y a | 3 téléchargements |

A répondu
Symbolic math- substitute a derivative function with subs()?
A late answer, but maybe this will help others. See <http://stackoverflow.com/a/26998716/2278029 my answer here> on StackOverflo...

plus de 9 ans il y a | 2

A résolu

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.

plus de 10 ans il y a

A résolu

Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

plus de 10 ans il y a

A résolu

Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

plus de 10 ans il y a

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

presque 11 ans il y a

A résolu

Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

presque 11 ans il y a

Question

HARDCOPY slower with more figures open?
GETFRAME is slow. I'm using the HARDCOPY function as a faster alternative (it's still way too slow) in order to capture figures ...

presque 12 ans il y a | 1 réponse | 1

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réponse

A résolu

Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

environ 12 ans il y a

A résolu

Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

environ 12 ans il y a

A résolu

Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

environ 12 ans il y a

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Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

environ 12 ans il y a

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Andrew Horchler

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GitHub Submissions Level 3

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