Getting the "oil" undefined "error in Octave, how to fix it?

Question

When I write this line in Octave:

[b,a] = butter (5,0.2);

I am getting the error:

error: 'oil' is undefined near row 1 column 10

How can I get rid of it? Thank.

+3

jason May 12 '15 at 12:54

2 answers

The function butter

is part of the package signal

. You need to download, install and download the package before you can use its features:

>> pkg install -forge signal
>> pkg load signal

+2

am304 12 May '15 at 13:00

alfakini · Accepted Answer · 2015-05-12T13:00:37+0000

You seem to have forgotten to download the signal package . You must install and download it to use the function butter

:

pkg install -forge signal
pkg load signal
[b,a] = butter (5,0.2);

Please take a look at the Octa documentation. It explains how to install and how to download packages.