def symbol0 = getsymbol();

davidlymburner

New member
VIP
Hello,

When I attempt to assign the current chart's symbol to a variable called "symbol0", I get an "Expected double" error. Is there a way to assign the value of the current chart's symbol to a variable?

Thanks in advance!
 
Solution
Hello,

When I attempt to assign the current chart's symbol to a variable called "symbol0", I get an "Expected double" error. Is there a way to assign the value of the current chart's symbol to a variable?

Thanks in advance!
While @rad14733 and @Pensar are correct, you can partly get around it by using an input switch and assigning a numeric value based on the switch...
Code:
input symbol = {default "VIX", "SPY", "Current"};
def price;
switch (symbol)
{
case VIX:
     price = close("VIX");
case SPY:
     price = close("SPY");
default:
     price = close();
}
or something along those lines... I don't have an editor available at the moment.

happy trading,
mashume

Join useThinkScript to post your question to a community of 21,000+ developers and traders.

@davidlymburner Regrettably, only numbers can be assigned to variables... There is no way to assign text to a variable in Thinkscript... While it may seem logical that something like def symbol = GetSymbol(); should work, it won't... Yet while GetSymbol() will return the current symbol for purposes such as displaying via AddLabel(), etc., it just can't be stored... Unfortunately, we have to live within the limitations of Thinkscript, whether we like it or not...
 
Hello,

When I attempt to assign the current chart's symbol to a variable called "symbol0", I get an "Expected double" error. Is there a way to assign the value of the current chart's symbol to a variable?

Thanks in advance!
While @rad14733 and @Pensar are correct, you can partly get around it by using an input switch and assigning a numeric value based on the switch...
Code:
input symbol = {default "VIX", "SPY", "Current"};
def price;
switch (symbol)
{
case VIX:
     price = close("VIX");
case SPY:
     price = close("SPY");
default:
     price = close();
}
or something along those lines... I don't have an editor available at the moment.

happy trading,
mashume
 
Solution
Hello.

I am looking to create a watchlist based on the parabolicsar. If the index I am looking at is /ES, I want to plot the parabolicsar of the VIX. If the index I am looking at is the /NQ, I want to plot the parabolicsar of the VXN. Is there a way to program this so that the script identifies the current symbol, and plot the PSAR of the corresponding index?

Current code posted below:


input ticker1 = "VIX";
input TimeFrame1 = AggregationPeriod.TWO_MIN;

def close = Close(Period = TimeFrame1, symbol = ticker1);

def low = Low(Period = TimeFrame1, symbol = ticker1);

def high = High(Period = TimeFrame1, symbol = ticker1);

input accelerationFactor = 0.02;
input accelerationLimit = 0.2;

assert(accelerationFactor > 0, "'acceleration factor' must be positive: " + accelerationFactor);
assert(accelerationLimit >= accelerationFactor, "'acceleration limit' (" + accelerationLimit + ") must be greater than or equal to 'acceleration factor' (" + accelerationFactor + ")");

def state = {default init, long, short};
def extreme;
def SAR;
def acc;

switch (state[1]) {
case init:
state = state.long;
acc = accelerationFactor;
extreme = high;
SAR = low;
case short:
if (SAR[1] < high)
then {
state = state.long;
acc = accelerationFactor;
extreme = high;
SAR = extreme[1];
} else {
state = state.short;
if (low < extreme[1])
then {
acc = min(acc[1] + accelerationFactor, accelerationLimit);
extreme = low;
} else {
acc = acc[1];
extreme = extreme[1];
}
SAR = max(max(high, high[1]), SAR[1] + acc * (extreme - SAR[1]));
}
case long:
if (SAR[1] > low)
then {
state = state.short;
acc = accelerationFactor;
extreme = low;
SAR = extreme[1];
} else {
state = state.long;
if (high > extreme[1])
then {
acc = min(acc[1] + accelerationFactor, accelerationLimit);
extreme = high;
} else {
acc = acc[1];
extreme = extreme[1];
}
SAR = min(min(low, low[1]), SAR[1] + acc * (extreme - SAR[1]));
}
}

def DotsBuy = if high > SAR then 1 else 0;
def Dot_Buy = DotsBuy;

plot buy = Dot_Buy is true;

AddLabel(yes,
if buy >= 0 then "-"
else "-" );

plot data = double.nan;

assignbackgroundColor(if buy == 1 then color.green else color.red);
 
Hello.

I am looking to create a watchlist based on the parabolicsar. If the index I am looking at is /ES, I want to plot the parabolicsar of the VIX. If the index I am looking at is the /NQ, I want to plot the parabolicsar of the VXN. Is there a way to program this so that the script identifies the current symbol, and plot the PSAR of the corresponding index?
Why would you be using a corresponding symbol in a watchlist?
Please provide an example of what your watchlist would look like.
 

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