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Last seen: mer än 3 år ago |  Active since 2013

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Answered
How can I perform matrix operations on certain rows?
What do you mean by 'certain'? Is there any condition that determines the selection of years. Then, you could use a logical arra...

ungefär 7 år ago | 0

Answered
I have video with 10 frames. I want the video depth. In other words stack 10 frames and get the thickness of the stack as a whole. Can anybody help me?
I'm not sure what you mean by depth/thickness but if you stack N frames of size (HxWxC) into a video (4d array of size HxWxCxN),...

ungefär 7 år ago | 0

Question


detect checkerboard pattern (non-solid dark colour)
I am trying to detect the checkerboard points in the image below. If that's not possible, I would like to split the image into 6...

ungefär 7 år ago | 2 answers | 0

2

answers

Question


How to read in a csv file with uneven columns?
My csv file has two different types of rows: Sep 30, 2016 15:45:09.486686950 BST 00:00:00:aa:00:df ARP 44 S...

mer än 7 år ago | 1 answer | 0

1

answer

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...

ungefär 9 år ago

Answered
how to fit gaussian model and plot it
You can do the following: 1) Estimate the mean and standard deviation using _normfit_ 2) Calculate the probability estimat...

ungefär 9 år ago | 2

| accepted

Solved


Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

ungefär 9 år ago

Answered
How to find standard deviation of a RGB image?
std2 calculates the standard deviation of an RGB image. Look up <http://uk.mathworks.com/help/images/image-mean-standard-devi...

ungefär 9 år ago | 0

Question


how to override a diary command if another diary already exists?
I usually create a log file at the start of each session by adding it to startup.m. Now, I'm trying to run a piece of code that...

nästan 10 år ago | 1 answer | 0

1

answer

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 ...

ungefär 10 år ago

Solved


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...

ungefär 10 år ago

Answered
sort vector elements under given restrictions
You can create a logical array (same length as v) with 1's for the positions you want (say, 3 and 5) and 0's for the rest and us...

ungefär 10 år ago | 0

| accepted

Question


matlab hangs when help window is opened
I have MATLAB R2014a 64-bit mac. Whenever I try to open the help window (either by clicking on Help in any of the toolbars or by...

ungefär 10 år ago | 1 answer | 0

1

answer

Question


multidimensional array to column vector with different dimensional order?
Say I have two arrays: if true % code count = 1; for m = 1:3 for n = 1:3 for k = 1:3 A(count) = count; count = c...

ungefär 10 år ago | 1 answer | 0

1

answer

Question


how do I draw the cluster boundaries in a scatter plot?
<</matlabcentral/answers/uploaded_files/9042/example.jpg>> I have a scatter plot of three clusters. How can I represent them ...

ungefär 10 år ago | 2 answers | 1

2

answers

Solved


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

ungefär 11 år 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...

ungefär 11 år 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 ...

ungefär 11 år 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 ...

ungefär 11 år ago

Solved


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

ungefär 11 år ago

Solved


Is my wife right?
Regardless of input, output the string 'yes'.

ungefär 11 år 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:...

ungefär 11 år ago

Question


8 neighbours of a pixel after converting to 1D array
Hi Is there a simple way to access the 8 neighbours of a pixel x(i,j) given by x(i-1,j-1), x(i-1,j), x(i-1,j+1), x(i,j-1), .....

ungefär 11 år ago | 3 answers | 2

3

answers