Undefined function or method '...' for input arguments of type 'double'.

I'm getting the following error when I try to run some function m-files: ??? Undefined function or method '[name of function]' for input arguments of type 'double'.

I know this usually happens when the file isn't in the working directory, but that's not the case here.

When I was running these m-files in a different directory on my computer, it worked fine. I moved them to another directory on my laptop, and they're still fine, but I get this error on two of my desktops.

Thank you.

[Anveshkumar Kolluri]

I have encountered this several times, and I used an alternative to tackle it, rather than getting stuck with the rms function.

RMSvalue = sqrt(mean(freq.^2));

[Saiful Haqiqi Hassan]

https://stackoverflow.com/questions/38240367/undefined-function-function-name-for-input-arguments-of-type-double

try read this. it explained in details about this error

[Walter Roberson]

sameeksha shrivastava comments:

i m also get the error Undefined function 'imsegkmeans' for input arguments of type 'single'.

[Walter Roberson]

https://www.mathworks.com/help/images/ref/imsegkmeans.html was introduced in R2018b and would not be available in any previous release.

[Selami Dogan Akansu]

installing related toolbox solved my problem.

[Larasati Handayani]

i m also get the error Undefined function 'batas' for input arguments of type 'double'.

[Walter Roberson]

@Larasati Handayani sorry, too many irrelevant hits when I go looking for something about "batas". More context might help.

[Jithin Nambiar J]

It sometimes gives you this error if you don't have the right toolboxes installed for the certain function.

If a particular function is causing an error. Try typing

help functionName

If this results in like a certain toolbox is required for this function to work. Just click on the hyperlink or underlined link which is given in the terminal.

It will direct you to the appropriate package. Make sure you save any programs. Since installing the packages requires MATLAB to restart.

Cheers !!

[Arun kumar]

Thank you it is realy helpfull

Answer 1

[MathWorks Support Team]

Please refer to the following post, which presents solutions that are possibly relevant to this error message:

https://www.mathworks.com/matlabcentral/answers/96005-why-do-i-get-the-error-undefined-function-or-variable

Answer 2

[Eyasu getahun Chekole]

I am pretty sure that the reason why this problem happened is because of the license of the toolbox (package) in which this function belongs in. Write

which functionName

and see what will be the result. If it returns path of the function and the comment

"Has no license available",

then the problem is related to the license. That means, license of the package is not set correctly. Mostly it happens if the package (toolbox) of this function is added later, i.e., after installation of the original `matlab`. Please check and solve the license issue, then it will work fine.

[Jennifer Wu]

This is the root cause for my case.

[Zohaib Ahmad]

Thank you it help me in a great deal

[ibadullah safdar]

I am actually facing this problem too as my inpoly function is running accurately before installation of a new matlab but now I am running the same code with old file of poly function but it is showing the error of undefined inpooly function. Kindly tell me how to resolve the license issue as I have also checked my code by intalling new function of inpoly but the problem persist. Kindly help in this matter.

[Walter Roberson]

inpoly is not a Mathworks supplied function. https://www.mathworks.com/matlabcentral/fileexchange/10391-fast-points-in-polygon-test

[ibadullah safdar]

problem resolved Roberson. Thank you so much.

Answer 3

[Majid]

In my case, there was a function that is used in my code but it was not in the directory, so by changing the location of the sub function and copying in the active directory , the problem is solved now.

[Walter Roberson]

Mohammad Heydari comments,

sounds rational

[Devashish Sharma]

how to change the loaction???

[Walter Roberson]

Use your operating system tools to copy the directory and then use pathtool to add the new location to your MATLAB path.

[David J. Mack]

This helped in my case. Thx Walter!

[Sehairi K.]

This helped me too

Thanks a lot

Answer 4

[Paulo Silva]

change the working directory to the folder where you have your code or add the path.

Go to the File and choose the Set Path

[D]

That's not the problem. The file is in the working directory.

I've tried running it from the editor, but I'm getting the same error.

[Oleg Komarov]

You have to add the path

Answer 5

[Walter Roberson]

Are you function names in mixed case, and your laptop runs Windows but your desktop runs Linux ?

[D]

Yes, the function names are mixed case.

The laptop and one of the desktops run Windows 7.

The other one is a Mac.

I get the same errors on both desktops, though.

[Niklas]

Remember that the first function of the .m-file must have the same name as the file itself.

[nasyim rosli]

really work

[Rose WABUTI]

thank you, saved my life...lol

Answer 6

[n]

Hi,

Please consider that you should be EXACTLY in the same directory; and not even in sub-directories within the right path.

I hope this solves the case. It worked for me.

[g.shaanti]

This worked for me, thank you.

Answer 7

[Keith Kripp]

I've encountered this error when attempting to call MEX functions that were built/compiled on machines running a different version of Windows.

e.g. I build a MEX file from source code on a 32 bit machine, transfer it somewhere down the road to a 64 bit machine, and then attempt to call the function.

Seems like this error often has little to do with the arg type being 'double.'

[Matt J]

Seems like this error often has little to do with the arg type being 'double.'

Well, sometimes it genuinely is an issue of the arg type, as shown here

>> sin('a')
Undefined function 'sin' for input arguments of type 'char'.

Clear 'sin' does exist, but just doesn't know what to do with char input.

As for the MEX-file issue, that has nothing to do with the 64bit-ness of Windows, only the 64bitness of the MATLAB version. 64-bit MATLAB will be looking for files with extension 'mexw64' whereas a 32-bit compiled mex file will have extension 'mexw32'. So, that really is a case of MATLAB not being able to find a matching file.

Answer 8

[Devi Jorks]

in case of the sin(a) just dont put the '', then it works fine, at least on winxp 32bit

Answer 9

[Resorcap]

Before run function, add current absolute path:

add(pwd);

And this worked for me.

Answer 10

[chao dong]

For me,the reason why this error occured was because I used a method that actually did not belongs to the object I used to invoke.This means that I should first transform my object to another type of data,for me,I actually have to change the object belongs to vehicle class to mini class to specify its data type. OOP's philosophy is indeed very important for you to understand why it occured and solve the error.

Answer 11

[eranna annigeri]

hi all ,

i am getting this error in the glcm code can anyone help me with this error

stats = GLCM_features1(GLCM2,0)

Undefined function 'GLCM_features1' for input arguments of type 'double'.

[Walter Roberson]

http://www.mathworks.com/matlabcentral/fileexchange/22187-glcm-texture-features

Note: there are several File Exchange contributions that are more efficient versions of that code, such as https://www.mathworks.com/matlabcentral/fileexchange/22354-glcm-features4-m--vectorized-version-of-glcm-features1-m--with-code-changes-

Answer 12

[Nensi Tallamma]

Hi i'm getting this error " ??? Undefined function or method 'wavelet' for input arguments of type 'double'." , when i'm try to run :

[wave,period,scale,coi] = wavelet (madden_julian,dt,pad,dj,s0,j1,mother);

Can anyone help me with this error?

[Walter Roberson]

Mathworks does not define a function named "wavelet" in any toolbox.

I checked and it does not appear that any of the File Exchange contributions happen to define a function with that name either.

You appear to be using the code from G08isu.pdf. It appears to use software from colorado.edu; it looks like you can find the source code at http://paos.colorado.edu/research/wavelets/software.html

Answer 13

[Lang Hu]

I met the problem ??? Undefined function or method 'cdfcalc' for input arguments of type 'double'. Besides, when I use cmd "which cdfcalc", returned that no such a function found. I wonder if I missed to install something?

Plus: When I went to the download page, I have these to download: Installer.exe MATLAB77.zip Communications_Toolbox42.zip Signal_Processing_Blockset68.zip Signal_Processing_Toolbox610.zip

I downloaded them all and installed. But when installing, it alerted me that no Simulink. How should I handle this?

[Walter Roberson]

cdfcalc is from the Statistics and Machine Learning toolbox. It appears that you have not installed that.

The Signal Processing Blockset that are trying to install requires Simulink and is useless without Simulink. It does not affect use of the Signal Processing Toolbox by itself, so you should only install Signal Processing Blockset if you install Simulink.

If you have a Student Suite license, then you might simply have not told the installer to install those packages.

Answer 14

[0460051 NCTU]

I have the same problem.Here is my error.

An UndefinedFunction error was thrown on the workers for 'configurePin'. This might be because the file containing 'configurePin' is not accessible on the workers. Use addAttachedFiles(pool, files) to specify the required files to be attached. See the documentation for 'parallel.Pool/addAttachedFiles' for more details.

Caused by: Error using parallel_function>make_general_channel/channel_general (line 929) Undefined function 'configurePin' for input arguments of type 'double'.

I'm trying to communicate matlab and arduino.However, it's always running wrong.What's happened?

[Walter Roberson]

You need to create the arduino object on each worker that needs to access arduino. As you probably only have one arduino, that should probably be only one worker. In turn that probably makes it most likely that you would use SPMD with the arduino code in a section protected by testing for one particular lab number; the other labs might or might not use labSend to send information to that lab for it to process on their behalf.

[0460051 NCTU]

How to create the arduino object on each worker?

I tried SPMD with my code.However,it was the same.

[Walter Roberson]

You call arduino() with the appropriate COM port. Remember that any one arduino device can only be communicated with from one worker.

If necessary, in your main routine you could call

fullpathToUtility = which('arduinoio.internal.Utility');
if isempty(fullpathToUtility) 
   % arduino Support package not installed - Error.
   error( getString( message( 'MATLAB:hwstubs:general:spkgNotInstalled', 'MATLAB Arduino', 'ML_ARDUINO')) );
end

poolobj = gcp;
addAttachedFiles(poolobj, arduinoio.SPPKGRoot);

[John Abh]

when i was trying to run a .m file related to emd, i got Undefined function 'fmsin' for input arguments of type 'double'.so how can i fix it????

[Walter Roberson]

I do not seem to be able to locate any fmsin . If you happened to mean fmsim then it appears that is a very old routine available from Fuzzy Identification Toolbox

[John Abh]

THANK YOU..... I tried to remove error with all the ideas i got,but still it is showing some error......the .m file is attached so help me to fix this error....

[Walter Roberson]

It appears you need the Time Frequency Toolbox, http://tftb.nongnu.org/

Answer 15

[indah octaviyani]

i got this error,, could you help me?

Undefined function 'generateExplicit' for input arguments of type 'MPCController'.

[Walter Roberson]

It appears you would probably want generateExplicitRange or generateExplicitMPC; see https://www.mathworks.com/help/mpc/ug/explicit-mpc-control-of-a-single-input-single-output-plant.html

[indah octaviyani]

thank you, but then i got this error too, how can i fix it?

Error using subsindex Function 'subsindex' is not defined for values of class 'ss'.

[Walter Roberson]

We would probably need to see your code. Please create a new Question with your code shown and a complete traceback of the error message.

Answer 16

[nikhil kumar]

I am getting this error when i run some files: Undefined function 'matplot2' for input arguments of type 'double' Error in Figure4_14 (line 42) matplot2(X,Y,abs(ISAR),20); Please help me out guys.

[Walter Roberson]

matplot2() is not part of any MATLAB toolbox or any entry in the File Exchange.

matplot2() appears to be a function in the R programming language.

Answer 17

[quach tien toan]

i got this error,, could you help me? Undefined function 'getsnapshot' for input arguments of type 'double'.

[Stephen]

As the getsnapshot documentation clearly states, its input must be a video input object. Your error message tells us that you are not giving getsnapshot a video image object, but a numeric value. You need to give it the right kind of input (the one that the documentation tell you that it requires).

Answer 18

[Markes Jak]

Error:Undefined function ‘execute’ for input arguments of type ‘double’.

raspberry pi simulink

Causes

Actually this can happened by many problems, one of them could be, the Simulink Support Package files didn’t downloaded correctly and may be there are missing file, and to be sure of that write:

which functionName

for example which execute

and see what will be the result. If it returns the comment “Has no license available” or just gives error , then follow the below soution and if returns with path and a name of the file ,then restart your matlab and check ,if not solved it could be another problem.

solution

Download all the package again, but before doing it, you have to remove SupportPackages folder in the following path: C:\Users\your_pc_ userrname\Downloads\MathWorks and start downloading the package ,it will works and mathworks will download the all the rquired files in that path for size not less that 716MB

i just restarted my pc and matlab and every thing works well ,thanks to these maklab team people http://www.maklabacademy.com/error-simulink-support-package-raspberry-pi-hardware-2016-2017/

Answer 19

[Toke Frederiksen]

In my case I was simply not in the correct working directory. Changed by either CD'ing into the correct directory, or using the UI to change working directory.

Answer 20

[lakshmi priya]

Undefined function 'partiald' for input arguments of type 'double'. please give me answers

[Walter Roberson]

partiald appears to be part of http://www.mathworks.com/matlabcentral/fileexchange/25056-fast-eyetracking or https://www.mathworks.com/matlabcentral/fileexchange/15652-iris-segmentation-using-daugman-s-integrodifferential-operator

Answer 21

[lakshan tharuka]

I get the followig error.Could you please give an answer

Undefined function 'readFunctionTrain' for input arguments of type 'char'.

[Steven Lord]

If you're trying to run the example from this blog post, you will need to download this File Exchange submission. I recommend using the Add-Ons manager to add it to your MATLAB installation (search for "deep learning 10 lines") or you can download it and manually put it in a directory on your path.

Note that the requirements state this requires Image Processing Toolbox and Neural Network Toolbox, so make sure you have those products installed.

[lakshan tharuka]

It worked.Thanks steven! But unfortunately requires 3.0 GPU

Answer 22

[divyasami27]

When I try:

which envelope

I get 'envelope' not found, this is in version R2014a.

[Walter Roberson]

That suggests you do not have the Signal Processing Toolbox installed.

Answer 23

[babita verma]

I get the following error when I try to use mattest for tscore calculations:

Undefined function 'bioinfochecknargin' for input arguments of type 'double'

Can anyone explain why would this error occur and suggest a solution? Any help is appreciated, thanks.

[Steven Lord]

That is a utility / helper function in Bioinformatics Toolbox. Check the output of the ver function to determine if you have that toolbox installed.

Answer 24

[Marco Nesci]

I got this message,

Undefined function 'kalman' for input arguments of type 'double'

I controlled all the licenses and the function is present in its controldesign folder How can I solve it?

[Andreas Goser]

Please run the following and post the results

which kalman -all
license('test','Control_Toolbox')

Answer 25

[Metin Ozturk]

It may be because the function you are trying to use is not available in your current MATLAB version. For example, if you use 'normalize' function in any version other than 2018, it will produce the same error, as the 'normalize' function was introduced in MATLAB 2018.

Answer 26

[sena pathy]

Undefined function 'rescale' for input arguments of type 'double'. please help me with this error

[Stephen]

rescale help states "Introduced in R2017b". Are you using MATLAB 2017b or later?

Answer 27

[Asry Noorsal]

hi there~ i have an error like this one "Undefined function 'ziegler_nic' for input arguments of type 'double'." i've added some file to the path but it still won't work. it will be a big help for me if anybody can solve this case, thanks before

[Walter Roberson]

ziegler_nic is an internal function to pid_design of https://www.mathworks.com/matlabcentral/fileexchange/18-ctrllab

You would not be expected to call this routine yourself, and if you did call it then MATLAB would not be able to find it because it is internal to the other function.

[Asry Noorsal]

so this is not related with any toolbox?

[Walter Roberson]

It is not related to any toolbox.

Answer 28

[clpi]

Hello !

I have a matlab function which at a certain point calculates sin(2*pi*freq*t_array) (t_array in an array of size (1,2000).

I tried to call this function vi matlab.engine but I got the error message: "Undefined function 'sin' for input argument of type 'int64' "

I tried what is people suggested in this topic but it didn't work. I wanted to add the file 'sin.m' to my working directory but it is not a function script, it is a simple text.

I would be very grateful of any help

Thank you !

[Guillaume]

Please start your own question if you need help. sin is indeed not defined with inputs of type int64. Convert your input to double. If your number is so large that it looses precision when converted to double (i.e. it is greater than flintmax) then why are you calculating the sinus of such large numbers?

[Philippe Lebel]

he needs to see what's at the end of the sine wave!

Answer 29

[Mosaic PCS]

I am getting this error .plz help

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

[Walter Roberson]

There is a series() call in the Control Systems Toolbox but it must be passed control systems not numeric values.

I speculate that you are using series() from some third party code and that it expects some kind of representation of a formula, perhaps symbolic, perhaps a function handle.

One possibility is that you are using symbolic code from r2007a or earlier that was based upon the maple software engine and you passed numeric values instead of symbolic.

Answer 30

[Sreedevi R Varma]

error:Undefined function 'recursive_max' for input arguments of type 'double'.

what to do in

my code:

function k=recursive_max(v);
    l=length(v);
    m=(v(l));
    function v=mx(vec,m,L);
    if L==1
        v=m;
    else
        if m < vec(L)
            m=(vec(L));
        end
            v=mx(vec,m,L-1);
        end
end
    k=mx(v,m,l);
end

Answer 31

[Jithin Nambiar J]

It sometimes gives you this error if you don't have the right toolboxes installed for the certain function.

If a particular function is causing an error. Try typing

help functionName

If this results in like a certain toolbox is required for this function to work. Just click on the hyperlink or underlined link which is given in the terminal.

It will direct you to the appropriate package. Make sure you save any programs. Since installing the packages requires MATLAB to restart.

Cheers !!

Answer 32

[Bingo Bongo]

I am get the following error

Undefined function 'trainNetwork' for input arguments of type 'double'

Iam trying the Time series forecasting using deep learning example(Chickenpox) code.

iam using version R2012b of Matlab

[Walter Roberson]

R2012b had absolutely no support for Deep Learning.

To do Deep Learning in R2012b, you have two choices:

1. Write all the code yourself; or
2. find a third-party library and use loadlibrary() to link to it

The first Deep Learning support was added in R2016a, and there has been a lot of upgrades of the Deep Learning support since that time; if you need to do Deep Learning then I highly recommend that you get a new version of MATLAB.

[Bingo Bongo]

Noted. Thank you

Answer 33

[Mohamed Zewail]

I also got a similar problem with ONNX function,

Undefined function 'rearrangeONNXWeights' for input arguments of type 'single'.

[Mohamed Zewail]

I used

which rearrangeONNXWeights

and did not find a path to this function, how could I find this function and add the path to matlab

[Walter Roberson]

Code for it is posted at https://www.mathworks.com/help/deeplearning/ug/import-pretrained-onnx-yolo-v2-object-detector.html#ImportAPretrainedONNXYOLOV2ObjectDetectorExample-9

[Mohamed Zewail]

this step is where I got the error, any advice? and thanks for the help

[Walter Roberson]

The code for the function is where I linked. Copy the posted code to appropriate .m files.

[Mohamed Zewail]

oh I thought its built in the toolbox, thanks a lot.

[Walter Roberson]

It is built in to the toolbox, for new enough releases. However you did not mention which release you are using, and it was faster for me to show you where you could find the exact code than it was for us to go back and forth about releases and exactly where the master copy of the code is stored, and exactly which command you are using and so on. I cut through all those steps by giving you a link to the exact code.