Use data from matlab function "tomonthly"

Taking the offilcial mathworks example: How to convert to monthly data

load predict_ret_data.mat
x0 = fints(expdates, expdata, {'Metric'}, 'w', 'Index')

tomonthly(x0)

Can someone please tell how I can extract the data for calcuations, e.g. take only the monthly prices and convert into a vector?

Best Jan

Answer 1

[per isakson]

Old memories awake, a long time ago we had to use getfield and setfield with structs

    >> s.f=17;
    >> getfield( s, 'f' )
    ans =
        17

Try

    xm  = tomonthly(x0);
    val = getfield( xm, 'Metric' );
    val'

returns

    ans =
      Columns 1 through 8
      108.4028 118.2912 131.2854  78.5738  72.9190  49.4032  53.9584  56.4897
      Columns 9 through 12
      46.5143   36.9287   36.9495   28.5665

However

    val = xm.Metric;
    val

returns

    ans = 

        desc:  TOMONTHLY: Index
        freq:  Monthly (3)

        'dates:  (12)'    'Metric:  (12)'
        '29-Jan-1999'     [     108.4028]
        '26-Feb-1999'     [     118.2912]
        '31-Mar-1999'     [     131.2854]
        '30-Apr-1999'     [      78.5738]
        '28-May-1999'     [      72.9190]
        '30-Jun-1999'     [      49.4032]
        '30-Jul-1999'     [      53.9584]
        '31-Aug-1999'     [      56.4897]
        '30-Sep-1999'     [      46.5143]
        '29-Oct-1999'     [      36.9287]
        '30-Nov-1999'     [      36.9495]
        '31-Dec-1999'     [      28.5665]
    >>

And I had to browse several pages to find out.