Hi,

I'm trying to plot a simple RSI line and no matter which currency I'm using, I'm always getting the 037 error.
I downloaded tick data from FXCM since 2012, tried different currencies, setting bar period, time, etc.

Error 037: Invalid value in plot "RSI" bar 1

function run() {

set(PLOTNOW);
vars r = series(RSI(priceClose,11));
plot("RSI", r, LINE, GREEN );

}

I'm really not sure how to fix this, there are a few other related topics on web, however I couldn't fix it.
I'd appreciate your feedback.

There's probably a zero or null value in the denominator of the RSI calculation. Try this:



You can also make a separate series out of the closing prices, for example:

The first version proposed works.

Thanks!