How to make Wavelet Toolbox work correctly?

I have MatLab 2014a in my Laptop and i am running some codes that use Wavelet Toolbox (I checked the toolbox and I found the Wavelet Toolbox is there) and I got the error below.

Undefined function 'dwt2' for input arguments of type 'double'.

even when trying to run the internal example below, I got the same error.

load woman; wname = 'sym4'; [CA,CH,CV,CD] = dwt2(X,wname,'mode','per');

[Geoff Hayes]

Ahmed - in the Command Window type

 which dwt2 -all

Since I don't have the Wavelet Toolbox, I see

 'dwt2' not found.

What result is returned for you?

[ahmed]

Thanks Geoff I got the following

C:\Program Files\MATLAB\R2014a\toolbox\wavelet\wavelet\dwt2.m % Has no license available

What is that mean?

[Geoff Hayes]

It means that you have the file/function to run the example, but you no longer have a license (?). But this shouldn't prevent you from working through the example. Try the following

 clear all;
 load woman;

What are the variables in the workspace? Just type

 whos

What is X (which should be loaded from the woman file). Also, try

 doc dwt2

and/or

 help dwt2

Do both of these commands (for documentation and/or help) return something?

[ahmed]

I did both of them and they gave me the dwt2 help.

[Geoff Hayes]

So after you call load woman, what does whos show you?

[ahmed]

I got this answer

Name Size Bytes Class Attributes

X         256x256            524288  double              
map       255x3                6120  double

[Geoff Hayes]

Perhaps you can't use this functionality once the license expires. Did you download a trial version of this toolbox, or did you purchase a license for it?

[ahmed]

Yes, you are right the License is expired and I did update to mine and it is working right now very well. Thank you very much for your time Best regards

Answer 1

[Geoff Hayes]

Executing the statement

 which dwt2 -all

returned

 C:\Program Files\MATLAB\R2014a\toolbox\wavelet\wavelet\dwt2.m % Has no license available

Ahmed verified that the license had expired and updated it. The code in the toolbox is now working.

[Mohammad Bhat]

'dwt2' not found. what to do