How to store the price by date in a new variable?

[TLK]

declare lower;
input priceAtDate = 20220520;
plot showPrice = if GetYYYYMMDD() == priceAtDate then close else Double.NaN;
showPrice.SetPaintingStrategy(paintingStrategy = PaintingStrategy.ARROW_UP);
AddLabel(visible = Yes, text = "showPrice: " + showPrice, COLOR.YELLOW);

Need help how to store the closing price of 20220520 for reuse? I know the problem is due to else statement that's why showPrice always return N/A unless 20220520 is the last bar.

 

[halcyonguy]

declare lower;
input priceAtDate = 20220520;
plot showPrice = if GetYYYYMMDD() == priceAtDate then close else Double.NaN;
showPrice.SetPaintingStrategy(paintingStrategy = PaintingStrategy.ARROW_UP);
AddLabel(visible = Yes, text = "showPrice: " + showPrice, COLOR.YELLOW);

Need help how to store the closing price of 20220520 for reuse? I know the problem is due to else statement that's why showPrice always return N/A unless 20220520 is the last bar.

a plot formula can't use recursion, a variabl looking at an earlier value of itself. use def , then plot.

def x = if GetYYYYMMDD() == priceAtDate then close else x[1];
plot showPrice = x;

 

[TLK]

a plot formula can't use recursion, a variabl looking at an earlier value of itself. use def , then plot.

def x = if GetYYYYMMDD() == priceAtDate then close else x[1];
plot showPrice = x;

Thank you so much. Learn something new and very useful.