How do you produce an XMIM chart with the MEAN and 2 STDs above/below as constant lines?
%graph.back.color: “black” %graph.linetype: “MEAN” double_dash %graph.linewidth: “MEAN” 3 %graph.plot.color: “MEAN” “red” %graph.axis.color: “MEAN” “red” %graph.scalemin: “MEAN” -20 %graph.scalemax: “MEAN” 25 %graph.viewport: “MEAN” “0 0 100 100” %graph.linewidth: “2STDabove” 3 %graph.plot.color: “2STDabove” “blue” %graph.axis.color: “2STDabove” “blue” %graph.scalemin: “2STDabove” -20 %graph.scalemax: “2STDabove” 25 %graph.linewidth: “2STDbelow” 3 %graph.plot.color: “2STDbelow” “green” %graph.axis.color: “2STDbelow” “green” %graph.scalemin: “2STDbelow” -20 %graph.scalemax: “2STDbelow” 25 LET ATTR myMean = average from 59 days before SPX last_data_day to SPX last_data_day of 1 value % move of Close of SPX # this says grab the mean of the daily % moves for the last 60 days LET ATTR my2STD = standard_deviation from 59 days before SPX last_data_day to SPX last_data_day of 1 value % move of Close of SPX # this says calculate 1 STD using the last 60 days of daily % moves SHOW price_spx: Clos
