How do I use the timeseries values as a normal vector

I have a long timeseries like this:

timeseries

Common Properties:
          Name: 'unnamed'
          Time: [186721x1 double]
      TimeInfo: tsdata.timemetadata
          Data: [1x1x186721 double]
      DataInfo: tsdata.datametadat

lets call the timeseries object vehicleSpeed.

When I want to filter the data using conv like this

mask = ones(1,3);
filteredSpeed = conv(vehicleSpeed.data,mask,'same')

I get the following error

    Error using conv (line 27)
    A and B must be vectors

I have tried different metohods of using this timeseries as a vector without success. Please help.

[dpb]

Looks like you somehow (inadvertently?) created the time series containing a cell array instead of a vector. Not sure how managed it; a simple experiment here to try to duplicate the above was unsuccessful.

I'd suggest recreating the timeseries object avoiding that if at all possible; if for some reason that's mandatory you can wrap the arguments to conv in a cell2mat call and that should, I believe, work--albeit klunky.

Perhaps show how you created the timeseries object would lead to better idea of how to avoid the problem to begin with.