Community Profile # David Hill

Last seen: Today Active since 2017

Electrical Engineering with minors in Computer Science and Mathematics. Working as an Undergraduate Research Assistant in the field of Robotics and Computational Photonics. Currently working on cutting-edge adaptive algorithms for controlling soft robots and other underdefined systems. Plan on continuing my education by pursuing a masters in mechanical engineering (robotics) and a MBA.

Programming Languages:
Python, C++, C, Java, MATLAB, HTML, Arduino
Spoken Languages:
English, Spanish

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Match numbers to allocate text
Your could also use a sparse array or an array of nan. x=[12 13 19 21]; y=[12 13 19 24 21 12 12]; X=nan(1,25); X(x)='ABCD'; ...

1 día ago | 0

How to find x value for a known y in array plot?
[~,idx]=min(abs(y-.8*max(y)));%.8*max(y) is not part of the y-array, find the closest y-idx to that value x(idx)

2 días ago | 0

Solved

Rule of mixtures (composites) - weighted bound
The <http://en.wikipedia.org/wiki/Rule_of_mixtures rule of mixtures> is used in the mechanical design of composite structures to...

6 días ago

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Rule of mixtures (composites) - lower and upper bounds (volumes)
The <http://en.wikipedia.org/wiki/Rule_of_mixtures rule of mixtures> is used in the mechanical design of composite structures to...

6 días ago

Solved

Get ranks of values in a vector
For a given vector, say [6 3 8 2], return the ranks (ascending) of observations, i.e. [3 2 4 1]. Do not worry about tied ranks. ...

6 días ago

Solved

Handle to an array of functions
Given a cell array of functions that operate on scalars, it is required to return a function handle to process a vector of value...

6 días ago

Solved

Apply a function array to an array of numbers
It is required to apply a cell array of functions to a numerical array, where the functions accept only scalar inputs. Exampl...

6 días ago

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Calculate value of capacitor
Given the value of resistance and time at which capacitor charges to it's 99%. calculate the value of capacitor

6 días ago

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Visualization of experimental data across a surface
Assume that you have taken data across the surface of a sample, for example sheet resistance. The data is stored in a Nx3 matri...

6 días ago

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Define the operators of function_handles
Suppose f and g are function_handles, try to define f+g,f-g,f*g and f/g. e.g. if f = @(x)x and g = @(x)x+1 ...

6 días ago

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Best Fit RMS
Given a set of data as x and y, find the <http://en.wikipedia.org/wiki/Root_mean_square RMS> value between the data and its best...

7 días ago

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Find my birthday
Given a birth date x, find my age when my birth day will fall on the same day as I was born. So if I was born on Monday, what ag...

7 días ago

Solved

Create a v-notch vector without "sort" function
Given a vector vec, create a v-shaped vector as shown below: vec = [ 10 2 3 89 5 7 90 0 12] Output vector = [90 89 12 10 7 5 3 ...

7 días ago

Solved

Tax Season ! How much is my salary?
Tax Season! I was employed for a period from x until y in a year and I get pay check of amount z on every alternate Friday of th...

7 días ago

Plot two histograms over one another
Play with the color and alpha face to get something you like. https://www.mathworks.com/matlabcentral/fileexchange/47552-histf?...

7 días ago | 0

Replacing Values in Matrix that are not equal to 1 while excluding 'NaN'
test2=test1; test2(test2==2)=1; test2(test2<0)=0;

7 días ago | 0

How do i insert one value from one array to another array
Look at pdist2 A = [1,2;2,1;1,1;1,3;3,2] ; B = [0.5,0.5;2,2]; pdist2(A,B)

7 días ago | 0

how to create a list of random number with a minimum difference between each number?
You can brute force it. m=200;%randomn numbers between 1-200 n=50;%array length d=20;%minimum distance a=randi(m,100000,n);%...

7 días ago | 0

Solved

Tony's trick for duplicating an mx1 vector n times
Without using repmat, or for loop, or concatenation, create a function to duplicate a vector, v, a specified number of times, n....

8 días ago

Solved

Create numeric palindromes and their square roots
Given a number n (1<=n<=9), return a left justified numeric matrix p with all the palindromes of the form 1 to n and back to 1. ...

8 días ago

Solved

persistant sum
There will be 9 tests for this problem. In each test you will be provided with 2 integers n=[n1,n2], where n2 is equal to t...

8 días ago

Solved

List the semiprimes
A semiprime number—or a 2-almost prime—is the product of two prime numbers. The numbers and are semiprimes, but and are not....

8 días ago

Solved

Cyclotomic polynomial
Given a Natural number (N), return the corresponding Cyclotomic Polynomial.

8 días ago

How to extract two columns from cell table based on two conditions
It is all number so I would convert to a matrix. H=cell2mat(heart(:,[6,9])); mesure_sodium=H(H(:,6)==1&H(:,9)<135,:);

8 días ago | 0

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combine two cell into one string

8 días ago | 0

Solved

Fill an array given a sum and array length values
Fill an array with random numbers so that their sum and array length will be equal to the given values as input. Function will ...

8 días ago

Solved

Number construction II
Given a positive integer, n, return a, b, c and d, such that 1. n = a*2^b+c*3^d 2. a, b, c and d are all positive integers...

8 días ago

Solved

Number of digits in an integer
Specifies how many digits in a given integer. Example: in=100 ==> out=3

8 días ago

Solved

Convert float to base N
The matlab function dec2base converts a positive integer number to a specified base. Extend it so that it works with non intege...

8 días ago