comparing different products

[sosMsos]

How would i proceed if i want to compare indices and based on a divergence or anomaly i want to place an order.

Example:
if Retail leads over SPY, get long.
Since they have different price scales i cant just say if retail cross above SPY get long.

what code components do we need to express that?

[NinjaTrader_RyanM1]

Hello sosMsos,

You use a multiseries script to be able to reference multiple series, and then it's a matter of refining the type of condition you're checking for.

You can compare the ratio of one instrument to another, like is done in FOREX or other spread trading. EURUSD represents essentially a simultaneous long position in euro and a short position in USD. When the value of this raises, it indicates either / both strength in euro and / or weakness in USD.