Expected Double...help please

[Mike]

Hi all. I attempted to calculate and plot the percentage of NYSE issues that are advancing using the following:

declare lower;
def Data = close("$ADVN") / ("$ADVN" + "$DECN" + "$UNCH");

plot Close = Round((Data), 2);
plot Ln = .50;

Close.DefineColor("Above", Color.UPTICK);
Close.DefineColor("Below", Color.DOWNTICK);
Close.AssignValueColor(if Close > Ln then Close.Color("Above") else Close.Color("Below"));

Received an Expected Double error. Any help that would enable me to plot the above would be great appreciated.

 

[mashume]

the error is in this line:

def Data = close("$ADVN") / ("$ADVN" + "$DECN" + "$UNCH");

it is expecting the second term to have numbers in it, rather than strings.

def Data = close("$ADVN") / (close("$ADVN") + close("$DECN") + close("$UNCH"));

might be closer to what you thought was going to happen.

-mashume

 

[Mike]

the error is in this line:

def Data = close("$ADVN") / ("$ADVN" + "$DECN" + "$UNCH");

it is expecting the second term to have numbers in it, rather than strings.

def Data = close("$ADVN") / (close("$ADVN") + close("$DECN") + close("$UNCH"));

might be closer to what you thought was going to happen.

-mashume

Thanks very much mashume! I've now got a better understanding of the Expected Double/error! Mike