Community Profile # Ondrej

Active since 2011

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Create a row array using double colon operator
Create a row array from 9 to 1, using the double colon operator.

5 years ago

Submitted

Conversion from graph incidence matrix to adjacency matrix.

Question

Uitable tooltip appearance time
I would like to know if it is possible to set the appearance time for tooltips in uitable. I would like to see the tooltip immed...

6 years ago | 0 answers | 0

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Question

Deleting elements from vector
I am removing some elements from a (long) vector. I am wondering which is the faster method in general (or better per se). Remov...

6 years ago | 2 answers | 0

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Submitted

Fast shortest distance between two line segments (in N dimensions)
Shortest distance between two line segments in N dimensions

Select every Nth row from number groups
If the n "trains" of ones have the same length always, then this probably what you want: result = repmat(find(diff([0 a])==...

7 years ago | 0

Submitted

DGGAM - Draw Graph Get Adjacency Matrix
Draw any graph and export it as fig and save its adjacency matrix Solved

Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

7 years ago

Solved

Free passes for everyone!
_Simply return the name of the coolest numerical computation software ever_ *Extra reward* (get a _freepass_): As an addit...

7 years ago

Solved

Who Has the Most Change?
You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

7 years ago

Solved

Find the sum of the elements in the "second" diagonal
Find the sum of the elements in the diagonal that starts at the top-right corner and ends at the bottom-left corner.

7 years ago

Solved

Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

7 years ago

Solved

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...

7 years ago

Solved

Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

7 years ago

Solved

Too mean-spirited
Find the mean of each consecutive pair of numbers in the input row vector. For example, x=[1 2 3] ----> y = [1.5 2.5] x=[1...

7 years ago

Solved

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

7 years ago

Solved

Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

7 years ago

Submitted

mat2fig - Conversion from a matrix to a figure
Function for converting a matrix into a figure (eps,fig,jpg,etc.) and latex code. 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...

9 years ago

Solved

Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...

9 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...

9 years ago

Hungary algorithm
Maybe this is what you are looking for: http://www.mathworks.com/matlabcentral/fileexchange/11609

9 years ago | 0

Question

Fit figure size to textbox
Is there some way to fit the figure size to the textbox? Example: I have a = annotation(... 'textbox','...

9 years ago | 1 answer | 0

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Solved

Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

9 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...

9 years ago

Solved

Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

9 years ago

Solved

Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

9 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...

9 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...

9 years ago

Solved

Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

9 years ago