https://communities.sas.com/t5/SAS-Forecasting-and-Econometrics/Ignoring-time-series-with-missing-data-no-activity/m-p/67817#M304 Udo, <BR /> <BR /> thanks again. Fri, 03 Sep 2010 18:59:14 GMT Werg 2010-09-03T18:59:14Z https://communities.sas.com/t5/SAS-Forecasting-and-Econometrics/Ignoring-time-series-with-missing-data-no-activity/m-p/67815#M302 Hello everyone !<BR /> <BR /> I'm using SAS High Performance Forecasting 2.3 and I have a question about accumulation step.<BR /> <BR /> Is there any option to ignore time series with no data recorded in the last 3 months, for example ?<BR /> <BR /> In mostly cases after 3 months missing values represents no activity in production line.<BR /> <BR /> Thanks ! Fri, 27 Aug 2010 20:02:16 GMT https://communities.sas.com/t5/SAS-Forecasting-and-Econometrics/Ignoring-time-series-with-missing-data-no-activity/m-p/67815#M302 Werg 2010-08-27T20:02:16Z https://communities.sas.com/t5/SAS-Forecasting-and-Econometrics/Ignoring-time-series-with-missing-data-no-activity/m-p/67816#M303 Hello -<BR /> Best to my knowledge there is no such option available.<BR /> You will need to exclude these series in a pre-processing step - for example by using a simple data step, which filters these series.<BR /> Thanks,<BR /> Udo Mon, 30 Aug 2010 09:11:29 GMT https://communities.sas.com/t5/SAS-Forecasting-and-Econometrics/Ignoring-time-series-with-missing-data-no-activity/m-p/67816#M303 udo_sas 2010-08-30T09:11:29Z https://communities.sas.com/t5/SAS-Forecasting-and-Econometrics/Ignoring-time-series-with-missing-data-no-activity/m-p/67817#M304 Udo, <BR /> <BR /> thanks again. Fri, 03 Sep 2010 18:59:14 GMT https://communities.sas.com/t5/SAS-Forecasting-and-Econometrics/Ignoring-time-series-with-missing-data-no-activity/m-p/67817#M304 Werg 2010-09-03T18:59:14Z