Problem
Create block matrix of integers (j+k-1) - Part I
Given m, n, p, and q, create a matrix of m-by-n blocks (submatrices), each sized p-by-q. The elements of the (j,k)th block all h...
4 years ago | 4 | 125 solvers
Problem
Dartboard Average II
A dartboard arranges the numbers 1 to 20 such that each value is typically flanked by quite different values - for example, 20 i...
4 years ago | 1 | 118 solvers
Problem
Dartboard Average I
A dartboard arranges the numbers 1 to 20 such that each value is typically flanked by quite different values - for example, 20 i...
4 years ago | 3 | 184 solvers
Problem
Possible Rugby Scores
Given a natural number s (> 4), representing a rugby team's score, return an n-by-3 matrix representing all n possible combinati...
4 years ago | 7 | 121 solvers
Problem
Calculate Angle From Axis
Given coordinates x and y, an axis ("X" or "Y"), and a direction ("cw" or "ccw", meaning clockwise and counterclockwise, respect...
4 years ago | 7 | 225 solvers
Solved
Power Outages Histogram
Create a function that takes power outage data as an input and creates a histogram of the number of outages as a function of Reg...
4 years ago
Solved
Reproduce this plot!
Write a function that will take a dataset (x,y), a best fit model (model), and the upper and lower prediction bounds (lb,ub) for...
4 years ago
Solved
3D Plots and Colorbars
Use the matrices X, Y, and Z provided in the function template to create a surface plot. Add a colorbar to the surface plot and ...
4 years ago
Solved
Jack O'Lantern
If visualized correctly, the data contained in the matrix A will look like a jack-o'-lantern. Create a function that will visu...
4 years ago
Solved
Adding Inset Plots
You can use the axes function to define the position of an empty x/y axis. The position is measured relative the the bottom left...
4 years ago
Problem
Find the minimum of the column-maximums of a matrix
Given a matrix A, find the maximum value of each column, then return the smallest of those maximum values (ie return the minimum...
4 years ago | 8 | 692 solvers
Problem
Simpson's Paradox - Calculate correlation coefficients for groups of data
Simpson's Paradox is a statistical phenomenon where groups of data can have a characteristic while the whole data set together h...
4 years ago | 8 | 476 solvers
Problem
Calculate the mean of each half of a matrix
Given a matrix with an even number of columns, n, return a 1-by-2 row vector where the first element is the mean of all the elem...
4 years ago | 6 | 745 solvers
Solved
The Goldbach Conjecture
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...
4 years ago
Solved
Poly2mask, drawpolygon or patch
Recently, I tried to plot a polygon in matlab, and I found there is a lot of embedded function that can be used. However, some f...
4 years ago
Solved
Project Euler: Problem 9, Pythagorean numbers
A Pythagorean triplet is a set of three natural numbers, a b c, for which, a^2 + b^2 = c^2 For example, 3^2 + 4^2 = 9 + 16 ...
4 years ago
Solved
Project Euler: Problem 8, Find largest product in a large string of numbers
Find the greatest product of five consecutive digits in an n-digit number. 73167176531330624919225119674426574742355349194934...
4 years ago
Solved
Project Euler: Problem 4, Palindromic numbers
A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 ...
4 years ago
Solved
Project Euler: Problem 3, Largest prime factor
The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number being input, input might be ui...
4 years ago
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.
4 years ago
Solved
We love vectorized solutions. Problem 1 : remove the row average.
Given a 2-d matrix, remove the row average from each row. Your solution MUST be vectorized. The solution will be tested for ac...
4 years ago
Solved
Musical Note Interval 1 - Diatonic Scale
Assuming a simple diatonic C scale, calculate the interval (integer) between two notes (provided as strings). By applying number...
4 years ago
Solved
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...
5 years ago
Answered
How do I display my secant method iteration values in a table?
If you want to display things nicely, you can use fprintf to format things into text. If the primary concern is getting the valu...
How do I display my secant method iteration values in a table?
If you want to display things nicely, you can use fprintf to format things into text. If the primary concern is getting the valu...
5 years ago | 0
| accepted
Answered
Matalb Academy - Reinforcement Learning Onramp: submission failed
There was a change in R2021a that caused an incompatibility. We have a fix ready that will go out with the next update to the tr...
Matalb Academy - Reinforcement Learning Onramp: submission failed
There was a change in R2021a that caused an incompatibility. We have a fix ready that will go out with the next update to the tr...
5 years ago | 3
Submitted
Conditionally colored line plot
Plots (2D line) graph split into two colors above and below a given threshold value
6 years ago | 1748 downloads |
Submitted
Simple real Fourier series approximation
Computes coefficients for the real Fourier series approximation to a data set.
6 years ago | 6491 downloads |
Answered
Assign a number to a letter in excel
I don't understand what you're trying to get out of the original data. If you do diff(X2) you'll get [1 -1 0 0 0...
Assign a number to a letter in excel
I don't understand what you're trying to get out of the original data. If you do diff(X2) you'll get [1 -1 0 0 0...
6 years ago | 0
Solved
Integer or Float?
Test an input to see whether it is an integer or a floating point number. If it is an integer return 1 for 'true'. Otherwise ret...
7 years ago
Solved
Solve a System of Linear Equations
Given a constant input angle θ(theta) in radians, create the coefficient matrix(A) and constant vector(b) to solve the giv...
7 years ago