John Iversen

Last seen: 4 months ago | Active since 2005

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ji_utils
A collection of personal MATLAB utility functions written over the years with many useful enhancements for plotting, data analys...

4 months ago | 3 downloads |

Submitted

freezeColors / unfreezeColors
Use multiple colormaps per figure or axis! Works for many types of objects, not only images.

4 months ago | 129 downloads |

Question

closeRequestFcn: how do I distinguish if it is called by a mouse click to window's close button vs a close() command??
I am writing a custom closeRequestFcn I would like it to do different things depending if it is called because the user 1)...

8 years ago | 1 answer | 0

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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

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

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

11 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 ...

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

Solved

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

11 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 ...

11 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...

11 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:...

11 years ago

Submitted

FFTmtX
Performs vectorized FFT on multiple processors. New: single and double precision.

13 years ago | 2 downloads |

Submitted

Enhanced help--improve your workflow
Simple enhancement to help listings: adds hyperlinks to open files for editing.

16 years ago | 0 downloads |

Submitted

JISUBPLOT + NEXTPLOT: enhanced replacement for subplot
Automatically create complex subplot layouts

16 years ago | 1 download |

Submitted

Use Mac OS X XML Plists with MATLAB
Utilities to convert Mac OS X native storage format (XML Property Lists) for use in MATLAB.

17 years ago | 5 downloads |

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