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Stored inside a mysql-db-table I've collected question-by-question response time for a survey. First solution could be: 1) estract with SQL query all fields (with NA values due the presence of question-filters and conventional jump) 2) handle data with [PHP, Perl, Python] to extract datetime fields to per-question response time in seconds and store time result for every record 4) plot boxplot over time response. Are there alternative tips more R-related without extra-manipulation? Is there a singular way to operate with R? Any package/function to help? Thanks - -- Daniele Medri -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (GNU/Linux) iD8DBQE/ScEGIQMOQEPV3KYRAmvqAJ0T5dbE3b/FVaBQTfPRpfRH8VTLjgCeJMVs VrnCwIeUDowcmH9zbWnYrhM= =pge1 -----END PGP SIGNATURE----- ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
