/** {@inheritDoc} */ @Override protected void performExport(final IProgressMonitor monitor, final PrintStream out) throws Exception { final DateFormat date_format = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss.SSS"); int count = 0; for (ModelItem item : model.getItems()) { // Item header if (count > 0) out.println(); printItemInfo(out, item); // Get data monitor.subTask(NLS.bind("Fetching data for {0}", item.getName())); final ValueIterator values = createValueIterator(item); // Dump all values MatlabQualityHelper qualities = new MatlabQualityHelper(); long line_count = 0; out.println("clear t;"); out.println("clear v;"); out.println("clear q;"); while (values.hasNext() && !monitor.isCanceled()) { final VType value = values.next(); ++line_count; // t(1)='2010/03/15 13:30:10.123'; out.println( "t{" + line_count + "}='" + date_format.format(VTypeHelper.getTimestamp(value).toDate()) + "';"); // v(1)=4.125; final double num = VTypeHelper.toDouble(value); if (Double.isNaN(num) || Double.isInfinite(num)) out.println("v(" + line_count + ")=NaN;"); else out.println("v(" + line_count + ")=" + num + ";"); // q(1)=0; out.println( "q(" + line_count + ")=" + qualities.getQualityCode( VTypeHelper.getSeverity(value), VTypeHelper.getMessage(value)) + ";"); if (line_count % PROGRESS_UPDATE_LINES == 0) monitor.subTask(NLS.bind("{0}: Wrote {1} samples", item.getName(), line_count)); } out.println(comment + "Convert time stamps into 'date numbers'"); out.println("tn=datenum(t, 'yyyy/mm/dd HH:MM:SS.FFF');"); out.println(comment + "Prepare patched data because"); out.println(comment + "timeseries() cannot handle duplicate time stamps"); out.println("[xx, idx]=unique(tn, 'last');"); out.println("pt=tn(idx);"); out.println("pv=v(idx);"); out.println("pq=q(idx);"); out.println("clear xx idx"); out.println(comment + "Convert into time series and plot"); // Patch "_" in name because Matlab plot will interprete it as LaTeX sub-script final String channel_name = item.getDisplayName().replace("_", "\\_"); out.println( "channel" + count + "=timeseries(pv', pt', pq', 'IsDatenum', true, 'Name', '" + channel_name + "');"); out.print("channel" + count + ".QualityInfo.Code=["); for (int q = 0; q < qualities.getNumCodes(); ++q) out.print(" " + q); out.println(" ];"); out.print("channel" + count + ".QualityInfo.Description={"); for (int q = 0; q < qualities.getNumCodes(); ++q) out.print(" '" + qualities.getQuality(q) + "'"); out.println(" };"); out.println(); ++count; } out.println(comment + "Example for plotting the data"); for (int i = 0; i < count; ++i) { out.println("subplot(1, " + count + ", " + (i + 1) + ");"); out.println("plot(channel" + i + ");"); } }