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Brad


31 total contributions since 2013

I'm currently a doctoral student at UC San Diego, conducting research on the neural network properties of memory formation. Using a mixture of neurobiological and computational programming tools, I study and model memory and synaptic potentiation.
Professional Interests: neural networks, synaptic potentiation, memory, learning, brownian motion, particle diffusion, particle tracking

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

9 mesi 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...

circa un anno 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 other numbers. Otherwise return false. E...

circa un anno ago

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Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

circa un anno 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...

oltre un anno ago

Submitted


macmem
view mac ram memory usage in console

oltre 2 anni ago | 0 downloads |

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Answered
Minimal example where you run two loops simultaneously, and programmatically stop/switch a for-loop or while-loop or update the information inside those loops, while they are executing.
The problem is solved now using a timer method. If you're interested, I left notes in the <https://gist.github.com/subroutines/5...

circa 3 anni ago | 1

| accepted

Question


Minimal example where you run two loops simultaneously, and programmatically stop/switch a for-loop or while-loop or update the information inside those loops, while they are executing.
I have a question related to parallel computing, how to run two loops simultaneously, and how to programmatically stop a for loo...

circa 3 anni ago | 2 answers | 0

2

answers

Submitted


subroutines/PolyDraw
Draw polygons on a figure using a mouse and return the 2D coordinates

circa 3 anni ago | 4 downloads |

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subroutines/con
add a messenging console to a figure

circa 4 anni ago | 1 download |

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subroutines/xmlmesh
xmlmesh is a Matlab function to format triangulated mesh data for xml file output.

circa 4 anni ago | 3 downloads |

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subroutines/actograph
actograph is a matlab function for plotting circadian rhythm actograms

circa 4 anni ago | 0 downloads |

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subroutines/NeuroFIT
Cell / Neuron Fluorescent Imaging Toolbox for Matlab

circa 4 anni ago | 0 downloads |

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Solved


Is my wife right?
Regardless of input, output the string 'yes'.

oltre 4 anni ago

Solved


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

oltre 4 anni ago

Solved


Elapsed Time
Given two date strings d1 and d2 of the form yyyy/mm/dd HH:MM:SS (assume hours HH is in 24 hour mode), determine how much time, ...

oltre 4 anni ago

Solved


Replace NaNs with the number that appears to its left in the row.
Replace NaNs with the number that appears to its left in the row. If there are more than one consecutive NaNs, they should all ...

oltre 4 anni 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...

oltre 4 anni ago

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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...

oltre 4 anni ago

Solved


Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

oltre 4 anni ago

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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 ...

oltre 4 anni ago

Solved


Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

oltre 4 anni ago

Solved


Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

oltre 4 anni ago

Solved


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...

oltre 4 anni ago

Solved


Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

oltre 4 anni ago

Solved


Add two numbers
Given a and b, return the sum a+b in c.

oltre 4 anni ago

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

oltre 5 anni ago

Submitted


circus() - just a simple circle function to generate circle info for plotting
give circus a radius and it returns circumference coordinates to plot

oltre 5 anni ago | 2 downloads |

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Rounding using 'fix'... possibly a bug?
Could someone tell me if this is a bug, or is there some logical reason 'fix' would round: |.3/.1 = 2| whereas |.4/...

circa 6 anni ago | 2 answers | 0

2

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Question


Questions about "best-practice" for modeling boundaries in Brownian motion surface diffusion
Hey there matlab gurus. I am a neurodynamics grad student at UCSD, and I've recently become interested in modeling surface diffu...

circa 6 anni ago | 0 answers | 0

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