Professional Interests: bioinformatics

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...

3 years ago | 1 Answers | 1

Solved

Nearest Numbers

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

3 years 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...

3 years 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...

3 years ago

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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...

3 years 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]; ...

3 years ago

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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,...

3 years ago

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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....

3 years 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...

3 years ago

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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 ...

3 years ago

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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...

3 years 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...

3 years ago

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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...

3 years 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...

3 years ago

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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 ...

3 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 ...

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

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:...

3 years ago

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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...

5 years ago

Solved

Determine if input is odd

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

5 years ago

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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...

5 years 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...

5 years ago | 1 Answers | 0

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...

5 years ago | 0 Answers | 0

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....

5 years ago | 0 Answers | 0

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 ...

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 ...

5 years 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...

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...

5 years 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...

6 years ago | 1 Answers | 0

Responded

Re: Spring 2010 MATLAB Contest, April 28 - May 5

I've downloaded the example files and it seems like the testsuite_sample.mat file is corrupt and won't unzip properly. Is anyon...

6 years ago | 34948 views

Submitted

SeqLogoFig

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

6 years ago | 1 downloads |