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Convert a vector into a number
This is a sub problem related to this problem: <http://www.mathworks.com/matlabcentral/cody/problems/621-cryptomath-addition>...

9 years ago

Solved

Back to basics 10 - Max Float
Covering some basic topics I haven't seen elsewhere on Cody. Return the largest positive floating-point number MATLAB can han...

9 years ago

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Number of Horns on a unicorn!
Calculate the number of horns on a *unicorn*! And I'm talking about a unicorn with not more than one horn on it!

9 years ago

Solved

Rotate a Matrix by 90 degrees
Rotate a Matrix by 90 degrees Example: If the input is: X = 1 2 3 4 5 6 7 8 9 ...

9 years ago

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Duplicate each element of a vector.
for an n-dimensional vector x, the function should return another vector 2n-dimension which each element is repeated twice. Ex...

9 years ago

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Project Euler: Problem 10, Sum of Primes
The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. Find the sum of all the primes below the input, N. Thank you <http:/...

9 years ago

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Remove NaN ?
input -> matrix (n*m) with at least one element equal to NaN; output -> matrix(p*m), the same matrix where we deleted the enti...

9 years ago

Solved

All your base are belong to us
Find the base _b_ logarithm of the input decimal number _x_. Express the output as a decimal number. The first argument is the n...

9 years ago

Solved

Determine Whether an array is empty
Input a matrix x, output y is TRUE if x is empty, otherwise FALSE.

9 years ago

Solved

Project Euler: Problem 6, Natural numbers, squares and sums.
The sum of the squares of the first ten natural numbers is, 1^2 + 2^2 + ... + 10^2 = 385 The square of the sum of the first ...

9 years ago

Solved

Back to basics 12 - Input Arguments
Covering some basic topics I haven't seen elsewhere on Cody. Return a value equal to the number of input arguments to the fun...

9 years ago

Solved

Compute a dot product of two vectors x and y
x and y are input vectors, d is a number and contains their dot product

9 years ago

Answered
online extracting data from DB using MATLAB
Hello Neeloufar, Here is some very specific code that pulls all the data from url: <http://www.genome.jp/dbget-bin/www_bget?-...

9 years ago | 1

Solved

Love triangles
Given a vector of lengths [a b c], determines whether a triangle with non-zero area (in two-dimensional Euclidean space, smarty!...

9 years ago

Answered
Logarithmic scale for colorbar
Hello Tom, My script plots sample data in logscale using "countourf", and both "YTick" and "YTickLabel" are set in "colorbar"...

9 years ago | 7

| accepted

Answered
plotting simple one variable functions for beginner using fplot
Hello bluseky, Try "ezplot" instead: syms x1 real f=x1^3 ezplot(f,[-1,1]) If you require the use of "fplot", g...

9 years ago | 1

| accepted

Answered
How do I correlate columns
Hello again, Kris, This function outputs a 925x90 matrix with individually computed linear correlation coefficients for each ...

9 years ago | 1

| accepted

Solved

Increment a number, given its digits
Take as input an array of digits (e.g. x = [1 2 3]) and output an array of digits that is that number "incremented" properly, (i...

9 years ago

Solved

First N Perfect Squares
*Description* Return the first N perfect squares *Example* input = 4; output = [ 1 4 9 16 ];

9 years ago

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Getting logical indexes
This is a basic MATLAB operation. It is for instructional purposes. --- Logical indexing works like this. thresh = 4...

9 years ago

Solved

Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....

9 years ago

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Omit columns averages from a matrix
Omit columns averages from a matrix. For example: A = 16 2 3 13 5 11 10 8 9 7 ...

9 years ago

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Back to basics 22 - Rotate a matrix
Covering some basic topics I haven't seen elsewhere on Cody. Rotate the input matrix 90 degrees counterclockwise (e.g. [1 2; ...

9 years ago

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Spot the outlier
All points except for one lie on a line. Which one is the outlier? Example: You are given a list of x-y pairs in a column ...

9 years ago

Answered
How to use sum series in Matlab
I'm providing another solution to address the longer summation you have posted in my first answer. Please let me know if this s...

9 years ago | 1

| accepted

Solved

Find the two most distant points
Given a collection of points, return the indices of the rows that contain the two points most distant from one another. The inpu...

9 years ago

Answered
How to use sum series in Matlab
Hello Atinesh syms i %Creat symbolic variable 'i' symsum(i^2, i, 1, 4) %Use symsum to run your summation operation Be...

9 years ago | 0

Answered
How to aggregate one column according to the other column in MATLAB?
%Built the reference MAT file from which your table is pulled product=[114,112,112,113,115,113,111,113]'; customer=[1 2 ...

9 years ago | 0

Answered
Multiplying structures together based on field names
Hello Oliz, I've played around with your structures, and I have multiplied _struct1.a_ through _struct2.b_ in the following w...

9 years ago | 0

Solved

Make a run-length companion vector
Given a vector x, return a vector r that indicates the run length of any value in x. Each element in r shows how many times the ...

9 years ago