Answered
Font of axis data and legends
you can set once using this command per matlab session or add this to your start-up program set(0, 'DefaultAxesFontSize', A...

13 years ago | 0

Answered
"Levelling" out a signal with moving average
I would recommend fitting an exponential curve rather than a poly fit. e.g see example 8.10 in Steven M. Kay, "Fundamentals of...

13 years ago | 0

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 ...

13 years ago

Solved


Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

13 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...

13 years ago

Solved


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

13 years ago

Solved


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

13 years ago

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

13 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 ...

13 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 ...

13 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...

13 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:...

13 years ago

Answered
mathematical expectation
As you have given it, you are only calculating the outer-product and not the covariance. To calculate the covariance you need m...

14 years ago | 0

Answered
Time series ARMA model estimation results different from textbook
Assuming that the there is no typo in the data (I dint check), I tried your code through system id GUI of Matlab system id toolb...

14 years ago | 0

Question


Error in publishing
I use Matlab 7.12.0 R2011a, on a Windows XP SP3 box. I am trying to use the publish feature of Matlab to automatically create a ...

14 years ago | 1 answer | 1

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answer

Question


Best method to clear persistent variables
Hello all, Recently I came to know that it is not a good idea to use clear all; So, I started using clear varia...

14 years ago | 3 answers | 3

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answers

Answered
Scaling of time
I am of the opinion that the question and solutions offered here don't match. Your question seems to be of a compression. Howeve...

14 years ago | 0

Answered
Polar fill sector
I was just wondering if the pie chart could be intelligently used to obtain the same result. @Walter: You would probably know b...

14 years ago | 0

Answered
How do I model a time series in MATLAB using ARMA?
Apart from looking at the prediction errors (like correlation analysis) it is always a good idea to analyze the plant (measured)...

14 years ago | 0

Answered
time series prediction
To continue on what Rajiv said above, the X in ARX or ARMAX stands for eXogenous input. An AR (ARMA) model is noise driven but a...

14 years ago | 0

Answered
How can I simulate a LTI system with complex data?
It looks like impulse() function does not take continuous time systems with complex coefficients; However, if I were to just sol...

14 years ago | 0

Answered
Multiple legands with semilogy
My guess is that you are probably using more strings in legend(); e.g: you are plotting only one array and passing two legend s...

14 years ago | 1

Answered
Removing a specific number from vector
A = 4; Z = [1 9 2 3 4 5] Z1 = Z(find(Z~=A)) that should work

14 years ago | 5

Answered
Out of memory problem
What is the OS virtual memory setting on your machine? on WinXP see My Computer--> Properties --> Advanced Tab --> Change butto...

14 years ago | 0

Answered
Matlab rounding to zero?
Like Sean said, convert all variables to some floating point format. You might do something like, for i=1:10000 A(i,:...

14 years ago | 0

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Answered
keep figures from popping up when running.
I won't promise you that this is the best solution, however, is one of them. You could set the 'visible' property off the fig...

14 years ago | 1

Question


What am I not seeing here
Here is a small script that I wrote after I missed a colon and saw some unexpected (by me) behavior in some work I was doing. ...

14 years ago | 2 answers | 6

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answers

Answered
Where can I upload images and files for use on MATLAB Answers?
I would put the files on my personal website or dropbox public folder and share a link ( <http://www.dropbox.com>). In both case...

14 years ago | 3

Question


Matlab is confused between line (function) and line (variable)
see code: In a certain power system simulation, I am naming my outputs (typically more than one, a linear MIMO simulation) in t...

14 years ago | 4 answers | 0

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