Will Dampier

Drexel University

Active since 2009

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Professional Interests: bioinformatics

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Question

Creating backwards compatible p-code for teaching purposes
I am teaching some matlab classes and we have some version-ing issues ... some students use versions as old as 2008b and some of...

meer dan 12 jaar ago | 1 answer | 1

1

answer

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Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

meer dan 12 jaar ago

Solved

Return elements unique to either input
Given two numeric inputs a and b, return a row vector that contains the numbers found in only a or only b, but not both. For ex...

meer dan 12 jaar ago

Solved

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...

meer dan 12 jaar ago

Solved

Replicate elements in vectors
Replicate each element of a row vector (with NaN) a constant number of times. Examples : n=2, A=[1 2 3] -> [1 1 2 2 3 3] n=0...

meer dan 12 jaar ago

Solved

Matrix which contains the values of an other matrix A at the given locations.
If you have two matrices, which together give xc and yc coordinates into another matrix, eg : xc = [1 1 1; 2 2 1]; ...

meer dan 12 jaar ago

Solved

Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

meer dan 12 jaar 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....

meer dan 12 jaar ago

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Return the first and last character of a string
Return the first and last character of a string, concatenated together. If there is only one character in the string, the functi...

meer dan 12 jaar ago

Solved

Remove all the consonants
Remove all the consonants in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill'; Output s2 is 'a ...

meer dan 12 jaar 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...

meer dan 12 jaar ago

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Return the largest number that is adjacent to a zero
This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

meer dan 12 jaar 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...

meer dan 12 jaar ago

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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...

meer dan 12 jaar ago

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

meer dan 12 jaar 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 ...

meer dan 12 jaar 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 ...

meer dan 12 jaar 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 ...

meer dan 12 jaar ago

Solved

Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

meer dan 12 jaar 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...

meer dan 13 jaar ago

Solved

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

meer dan 13 jaar 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...

meer dan 13 jaar ago

Question

Lower bound on p-value returned by corr
I'm using corr to calculate the p-value for the correlation between two datasets. It keeps returning a p-value of Zero. Do...

ongeveer 14 jaar ago | 1 answer | 0

1

answer

Question

Creating a backwards compatable p-code file
I am teaching some matlab classes and we have some version-ing issues ... some students use versions as old as 2008b and some of...

meer dan 14 jaar ago | 1 answer | 0

1

answer

Question

Combining specific regions of multiple images in a stripe pattern.
[EDIT: 20110526 15:43 CDT - reformat - WDR] I'm trying to combine images into a "stripe" pattern. Below are two example images....

meer dan 14 jaar ago | 0 answers | 0

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answers

Answered
Using MATLAB with Chessboard arrangements problem
Now, 15 hours after the deadline I've finally gotten all submissions I'll post my solution based on Andrew's solution. Its much ...

meer dan 14 jaar ago | 0

Answered
How to import numerous excel files into MATLAB?
You won't be able to load them all at once but you could easily use a for-loop to process them one at a time. Something like thi...

meer dan 14 jaar ago | 1

| accepted

Question

Is there a way to skip "pause" statements
I'm grading hundreds of student assignments using a semi-automated method. However, a large portion of the students have includ...

meer dan 14 jaar ago | 1 answer | 0

1

answer

Submitted

SeqLogoFig
This is a wrapper around the bioinformatics SeqLogo function that creates a REAL matlab figure.

meer dan 15 jaar ago | 2 downloads |

4.0 / 5

Submitted

RefineAlignments
A tool which can refine a set of multiple alignments to reduce the global alignment score.

bijna 16 jaar ago | 1 download |

0.0 / 5