Problem with findpeaks - error message of 'undefined variable "coder"'

I am trying to use the findpeaks function out of the signal processing toolbox. When I enter something like...

data = [1 15 4 2]
[pks,local] = findpeaks(data)

...I get

Undefined variable "coder" or class "coder.target".
Error in findpeaks>parse_inputs (line 99)
if coder.target('MATLAB')
Error in findpeaks (line 71)
[X,Ph,Pd,Th,Np,Str,infIdx] = parse_inputs(Xin,varargin{:});
99  if coder.target('MATLAB')

I am running Matlab 2014a with signal & stats & mapping toolboxes & have confirmed that I am pointing to the correct findpeaks function via "which -all findpeaks"

Answer 1

[AJ von Alt]

This looks like it might be a path issue. Try:

restore defaultpath
savepath
rehash toolboxcache

and restart MATLAB.

[Seth]

That worked; thanks, AJ!!!

[Image Analyst]

I'm really baffled as to why that worked since you said you "have confirmed that I am pointing to the correct findpeaks function via "which -all findpeaks"" Did you ever find out why that worked? Did you have your own function you wrote called coder()????

Answer 2

[Star Strider]

I’m a bit concerned about ‘...something like...’.

What returns when you run:

ac = class(data)

where ‘data’ is your argument to findpeaks.

If that comes back as double, I’m out of ideas and I’ll delete this.

[Seth]

ac = class(data) (where data = [1 10 2 6 5 11])

does come back as double. Thanks anyway!

[Star Strider]

It may be time to put in a Support Request to TMW.

Answer 3

[Image Analyst]

For me it runs fine and gives:

data =
     1    15     4     2
pks =
    15
local =
     2

Try putting a "clear all" before your code and try again. I don't have the mapping toolbox, or the MATLAB Coder toolbox either. What toolboxes are listed when you do "ver"?

[Seth]

Same thing happens after "clear all", and the toolboxes that come up via "ver" are Mapping, Signal Processing, & Statistics, all R2014a.

I'm going to put in a support request to Mathworks; seems like it might be something specific to my install, since nobody else is experiencing this.

Thanks for the suggestions!