Plotting the closing value one year ago? Two years ago? Three?

Plotting the closing value one year ago? Two years ago? Three?

Josh McCormick
2020-11-24 17:21:11

I'm banging my head against the wall on this one. I'm wanting to average the current symbol's closing price over the past six years. But to start, I'm just trying to plot the current closing price, the previous year's closing price, and so on. But I can't seem to come up with the function which says, "take the current date, subtract a year, and plot the close on that date". How should I be coding this?

// Plots the stock price of the current year and the past five years.

Y0_close=close;
Y1_close=ValueOn (close,Day(),Month(),Year()-1);
Y2_close=ValueOn (close,Day(),Month(),Year()-2);
Y3_close=ValueOn (close,Day(),Month(),Year()-3);
Y4_close=ValueOn (close,Day(),Month(),Year()-4);
Y5_close=valuewhen(stringequal(date(), month()."/".day()."/".year()-5), close);

Plot (Y0_close,"Year 0",colorBlack,ChartSmoothLine,StyleWidth2);
Plot (Y1_close,"Year -1",colorRed,ChartSmoothLine,StyleWidth2);
Plot (Y2_close,"Year -2",colorOrange,ChartSmoothLine,StyleWidth2);
Plot (Y3_close,"Year -3",colorGreen,ChartSmoothLine,StyleWidth2);
Plot (Y4_close,"Year -4",colorBlue,ChartSmoothLine,StyleWidth2);
Plot (Y5_close,"Year -5",colorViolet,ChartSmoothLine,StyleWidth2);

QuantShare
2020-12-03 12:58:59

Best Answer

Here is how:
b1 = barssince(year() != ref(year(), 1));
y1 = close[b1 + 1];
plot(y1, "");

If you want to plot the previous year value for every bar. Say on May 1, 2020, you want to plot the value of May 1, 2019 then you will need to create a custom function that would search for the previous year index within the date array and then use "ref" to reference the previous close.

Josh McCormick
2020-12-03 15:20:02

That's smart. I get what you're doing there.

Thanks,
Josh McCormick

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