Use data from matlab function "tomonthly"

2014 12 11
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更新时间：2014 12 12
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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

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per isakson
per isakson 2014-12-12
编辑：per isakson 2014-12-12

1 个投票

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.

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