Timeseries: how to set UserData using classes?

Hi to all, I'm learning Object-Oriented Programming with MATLAB and I have a question for you guys. I have some timeseries and I want to store them into a collection. The problem is that I would add some properties to each timeserie and I figured out that UserData field into timeserie could be used for this purpose. But how to call a class that set new properties? In particular I would add some unit of measure information and also the possibility to compute the data in a different unit of measure, for example: collection(1).Speed.StandardUnits.ms.Data (this for standard units) or collection(1).Speed.otherUnits.kph.Data.

Any idea?

Thank you for reading guys.

[Sebastian D'Amico]

Hi again, I've made some improvement:

classdef tsGenerate < timeseries
    properties
        channel
    end

      methods
          function channel_obj    = tsGenerate(dataVector,timeVector,name,nameStr,Channel)
              channel_obj         = channel_obj@timeseries(dataVector,timeVector,name,nameStr);
              if nargin > 0
                  channel_obj.channel = Channel;
              end
          end

          function dataPlot(channel_obj)
              plot(channel_obj.Data)
          end
      end

end

I can read the Standard Units using (my data is stored in Standard Units):

>>speed.channel.Quantity.SIunit.ms (meter per seconds)

and also different units using:

>> speed.channel.Quantity.otherUnits.kph

Now what I need is to create a method that plot my data stored into:

>> speed.Data

but I also want to have the possibility to plot my data using otherUnits.

I have a class called otherUnits that store also the conversion constant to convert data from meter per seconds to kph. So it's available from:

>> speed.channel.Quantity.otherUnits.kph.conversionConstant

How to create a method with sort of "submethods" to plot my data using differents units?

For example, if I want to plot my data in standard units I would use:

>> speed.dataPlot.SIunit.ms

and if I want to plot my data in other units I would use:

>> speed.dataPlot.otherUnit.kph

Thanks guys,