Solved

Return the 3n+1 sequence for n

A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

10 years ago

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...

10 years ago

Answered

how to stop the running program

Ctrl + C It'll work in most cases. You can change the key mapping in your MATLAB preferences.

how to stop the running program

Ctrl + C It'll work in most cases. You can change the key mapping in your MATLAB preferences.

10 years ago | 0

| accepted

Answered

Is my calculation too complex for Matlab?

As Bjorn mentioned, since they're periodic they may have many solutions. However if I remember the solve command right, I think ...

Is my calculation too complex for Matlab?

As Bjorn mentioned, since they're periodic they may have many solutions. However if I remember the solve command right, I think ...

10 years ago | 0

Solved

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...

10 years ago

Answered

colorbar position on imageplot with multiple figures

Colorbars are associated with a particular axis. If you do not specify which axis, then it will be added to the last one you use...

colorbar position on imageplot with multiple figures

Colorbars are associated with a particular axis. If you do not specify which axis, then it will be added to the last one you use...

10 years ago | 0

Answered

imshow update in realtime, colorbar causing it to slow down

You can make visualizations inside of loops more efficient by using handle graphics to update the underlying data rather than re...

imshow update in realtime, colorbar causing it to slow down

You can make visualizations inside of loops more efficient by using handle graphics to update the underlying data rather than re...

10 years ago | 1

| accepted

Answered

is there a version of Principle Component Analysis for images?

I don't know much PCA myself, but I know we have some built-in tools in Statistics and Wavelet toolboxes that may be of use: ...

is there a version of Principle Component Analysis for images?

I don't know much PCA myself, but I know we have some built-in tools in Statistics and Wavelet toolboxes that may be of use: ...

10 years ago | 0

Answered

What's the difference between imagesc and imshow?

|imshow| has a number of default settings intended for displaying images, such as turning off the axes and locking the aspect ra...

What's the difference between imagesc and imshow?

|imshow| has a number of default settings intended for displaying images, such as turning off the axes and locking the aspect ra...

10 years ago | 2

| accepted

Answered

Making a splash Screen for my Gui program

Search for 'splash screen' on the MATLAB File Exchange, there are a number of entries that can do this for you. <http://www.m...

Making a splash Screen for my Gui program

Search for 'splash screen' on the MATLAB File Exchange, there are a number of entries that can do this for you. <http://www.m...

10 years ago | 0

Solved

Who is the smartest MATLAB programmer?

Who is the smartest MATLAB programmer? Examples: Input x = 'Is it Obama?' Output = 'Me!' Input x = 'Who ?' Ou...

10 years ago

Answered

Test harnesses and reference models

First I would double check that you are using virtual vs non-virtual buses where appropriate. There's a good blog post here t...

Test harnesses and reference models

First I would double check that you are using virtual vs non-virtual buses where appropriate. There's a good blog post here t...

11 years ago | 0

Answered

High CPU usage when matlab is idle on Linux

Have you rebooted your Linux machine since July 1? If not then that may be the problem. There was a bug with Linux that caused a...

High CPU usage when matlab is idle on Linux

Have you rebooted your Linux machine since July 1? If not then that may be the problem. There was a bug with Linux that caused a...

11 years ago | 4

| accepted

Solved

The Hitchhiker's Guide to MATLAB

Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

11 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...

11 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...

11 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...

11 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...

11 years ago

Solved

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...

11 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...

11 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...

11 years 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...

11 years 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...

11 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...

11 years 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...

11 years ago

Solved

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 ...

11 years 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...

11 years ago