Why i got this error Undefined function or variable 'famp'.

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khalifa alebri
khalifa alebri 2017-12-16
编辑： YT 2017-12-16
delt=0.005
delt =
0.0050
>> s=2.384e-7
s =
2.3840e-07
>> x=load('AA01.HNE.2013.106.10.39.00');x=detrend(x)*s;plot(x) >> y=load('AA01.HNN.2013.106.10.39.00');y=detrend(y)*s;plot(y) >> z=load('AA01.HNZ.2013.106.10.39.00');z=detrend(z)*s;plot(z) >> whos Name Size Bytes Class Attributes
delt 1x1 8 double
s 1x1 8 double
x 21900x1 175200 double
y 21900x1 175200 double
z 22000x1 176000 double
>> z=z(1:21900); >> m=[x,y,z]; >> whos Name Size Bytes Class Attributes
delt 1x1 8 double
m 21900x3 525600 double
s 1x1 8 double
x 21900x1 175200 double
y 21900x1 175200 double
z 21900x1 175200 double
>> [fm,f]=famp(m,delt); Undefined function or variable 'famp'.
Did you mean: >> [fm,f]=damp(m,delt);
  2 个评论
khalifa alebri
khalifa alebri 2017-12-16
all the data in the same directory, FYI the MATLAB is a trial Version and I think its full version with all the functions

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回答（1 个）

YT
YT 2017-12-16
编辑：YT 2017-12-16
Well in general, it would seem like that you either call a function 'famp' which doesn't exist as a build-in Matlab function (therefor Matlab gives you a suggestion of a build-in function that does exist which is 'damp') or 'famp' is a function you created on your own but it's not in the same directory/environment (or on the Matlab path, like Stephen pointed out).
EDIT
path %check path
addpath('C:\user\my directory') %add to path
  2 个评论
Stephen23
Stephen23 2017-12-16
"ut it's not in the same directory/environment as your main file."
It does not need to be in the same directory, just anywhere on the MATLAB path will do perfectly.
YT
YT 2017-12-16
Well sure, but then you need 'addpath()' if you haven't specified it already. I agree it's easier to do that. I'll edit my statement.

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