Community Profile

# Gerard Capes

##### Last seen: 3 days ago
33 total contributions since 2017

#### Gerard Capes's Badges

View details...

Contributions in
View by

Question

Variable in a parfor cannot be classified
I'm attempting to convert some code to use a parfor, and have run into difficulty. A simplified example is given below, which do...

1 year ago | 1 answer | 0

### 1

Question

Can't read Excel files on Linux
A user has a large number of excel files (.xlsx) to read using `xlsread`. These files open just fine with Excel, and using `xlsr...

2 years ago | 0 answers | 0

### 0

Solved

Reverse the Words (not letters) of a String
*Description* Change the words of a string such that the words appear in reverse order. You may assume that the string is a n...

2 years ago

Solved

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

2 years ago

Solved

Is it a number?
Determine if input is numeric. If it is,output is 1; if it is not, output is 0.

2 years ago

Solved

Solve the Sudoku Row
*Description* A simple yet tedious task occurs near the end of most Sudoku-solving algorithms, computerized or manual. The ta...

2 years ago

Solved

Narcissistic number ?
Inspired by Problem 2056 created by Ted. In recreational number theory, a narcissistic number is a number that is the sum of ...

2 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...

2 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. Examp...

2 years ago

Solved

Sum the numbers on the main diagonal
Sum the numbers on the main diagonal of an n-by-n matrix. For input: A = [1 2 4 3 6 2 2 4 7]...

2 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 ...

2 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...

2 years ago

Solved

03 - Matrix Variables 6
Make _fMat_ be a 5x3 matrix of random integers with values from -3 to 3 (Hint: use *randi*)

2 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...

2 years 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 ...

2 years ago

Solved

Find the logic
There exists one logic in between input and output. Find it (easy math). Example 1: x=13 then y=339; Example 2: x=26...

3 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...

3 years ago

Solved

Switch matrix to a column vector
for e.g. x = [1 2 3 4] y = 1 3 2 4

3 years ago

Solved

02 - Vector Variables 2
Make the following variable: <<http://samle.dk/STTBDP/Assignment1_2b.png>>

3 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...

3 years ago

Solved

Determine the square root
Determine the square root of the value the user has entered, n.

3 years ago

Solved

Area of an equilateral triangle
Calculate the area of an equilateral triangle of side x. <<http://upload.wikimedia.org/wikipedia/commons/e/e0/Equilateral-tr...

3 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...

3 years ago

Solved

Make a 1 hot vector
Make a vector of length _N_ that consists of all zeros except at index _k_, where it has the value 1. Example: Input ...

3 years ago

Solved

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

3 years ago

Solved

Back to basics 15 - classes
Covering some basic topics I haven't seen elsewhere on Cody. Return the class of the input variable.

3 years ago

Solved

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

3 years 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 ...

3 years ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

3 years ago

Question

Set image aspect ratio using imshow
I am trying to load an image (screenshot of a graph), and plot my data on top. I have achieved this, but the aspect ratio of the...

3 years ago | 1 answer | 0