GDP and random forest prediction plot

Plot GDP data using plotTS
//Set Canvas Size

//start date
dtstart = features_q[1,1];

//Plot control structure
struct plotControl myPlot;
myPlot = plotGetDefaults("XY");

//Place first 'X' tic mark at 1984 month 1 and draw one every 6 months
plotSetXTicInterval(&myPlot, 20, 1961);

//Display only 4 digit year on 'X' tic labels
plotSetXTicLabel(&myPlot, "YYYY-QQ");

plotSetLegend(&myPlot, "Obs."$|"Predicted","TOP RIGHT", 1);

//Plot title
plotSetTitle(&myPlot, "U.S. Real GDP (Annual Percent Change, 2009=100)");
plotTS(myPlot, dtstart, 4, gdp_q*100);

//Add predictions
plotAddTS(features_q[testT+1,1], 4, predictions*100);

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