Undefined function 'ellip' for input arguments of type 'double'.

3 次查看（过去 30 天）
Yasir Khan
Yasir Khan 2016-7-16
回答： Star Strider 2016-7-16
Hi I wanted to know why I am getting the below error, I am trying to plot edf data in MatLab so decided to use an ellip filter. Here is my code below.
>> fs = 128; % sampling rate in Hz
fmin = 7; % minimum passband frequency in Hz
fmax = 9; % maximum passband frequency in Hz
order = 5; % filter order (the higher the narrower the transition band)
Rs = 20; % stopband attenuation in dB
Rp = 1; % passband ripples in dB
[b,a] = ellip(order, Rp, Rs, [fmin/(fs/2), fmax/(fs/2)]);
However I get an error saying
Undefined function 'ellip' for input arguments of type 'double'.
How can i fix this error?

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2016-7-16
First type:
ver
in the Command Window. If you have the Signal Processing Toolbox installed, it should be listed. If it is not, you have to install it.
If it is listed and you still cannot call ellip, you may have a path problem. The usual first step in fixing that is to run these lines from the Command Window or a script:
restoredefaultpath
savepath % <— MAY NOT BE NECESSARY
rehash toolboxcache
If that doesn’t work, you may have to contact MathWorks Tech Support.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Signal Generation and Preprocessing 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by