Dear Ladies and Gentlemen,

i am doing a project at the moment at the Transport Insitute of the

DLR (German Aerospace Centre, Institut fr Verkehrsforschung).

The focus of the project is to analyse a time use-study.

Various people had to report what they were doing on two subsequent

days (their time use from midnight to midnight).

For that, one day is splitted into 288 five-minute-segments. In each

of these 288 segments, one of 231 activities is available.

For every person, there are 288 variables in the SPSS-data set with

five-minute-segments (and with activities like sleep etc.), which

define that persons time use over one day.

My problem is related to that sort of data-structure:

I want to add the time-use for one person for all 288 segments.

With commands like count, recode etc. i am just able to recode/count

ONE variable and to get ONE new variable.

Is it possible to count / produce frequencies etc. for all of these

288 in one operation?

Eg to find out, that in 150 of the 288 five-minute segments that

person is watching TV (eg acitivity number 38)?

Does anyone has some experience with time-use research with SPSS

or

with such sequence-analysis with SPSS?

It would be great to get some hints.

Is there any literature concerning these problems?

Thank you very much!

Hans-Peter Schmid