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Andrew Horchler


Last seen: 4 days ago

Astrobotic

44 total contributions since 2012

We're going to the Moon! I'm the Senior Research Scientist at Astrobotic heading their Future Missions and Technology team (https://www.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 18 years of experience with Matlab and C.

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Andrew Horchler's Badges

  • Personal Best Downloads Level 2
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  • 5-Star Galaxy Level 3
  • GitHub Submissions Level 3
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Contributions in
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Submitted


sgolayfilt
Savitzky-Golay differentiation filters

2 years ago | 6 downloads |

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wrightOmegaq
Complex double-precision evaluation of the Wright omega function

3 years ago | 1 download |

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

3 years ago | 1 download |

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

3 years ago | 2 downloads |

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rgb2map
Convert RGB colors to indexed colormap colors

3 years ago | 3 downloads |

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QTWriter
Export QuickTime Movies with Matlab

3 years ago | 1 download |

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notify
Display OS X notification message window from Matlab

3 years ago | 2 downloads |

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

3 years ago | 3 downloads |

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

3 years ago | 1 download |

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polyfitsym
Fit symbolic polynomial to data

3 years ago | 2 downloads |

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

3 years ago | 4 downloads |

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

3 years ago | 10 downloads |

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cdiff
First- and second-order complex step derivative approximation

3 years ago | 1 download |

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

3 years ago | 3 downloads |

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

3 years ago | 4 downloads |

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rigidtform
Optimal rotation and translation between corresponding points

3 years ago | 1 download |

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hypergeomq
Fast evaluation of the generalized hypergeometric function

4 years ago | 6 downloads |

Answered
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...

5 years ago | 1

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.

6 years ago

Solved


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

6 years ago

Solved


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...

6 years ago

Solved


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

6 years ago

Solved


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

6 years ago

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 ...

7 years ago | 1 answer | 1

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answer

Solved


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...

8 years ago

Solved


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...

8 years ago

Solved


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...

8 years ago

Solved


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...

8 years ago

Solved


Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

8 years ago

Solved


Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

8 years ago

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