Ninja Trader doesn't include market internals. A good, reliable, and free service that does, is freestockcharts.com.
FWIW, some time ago I was researching basking trading automation techniques and one of the filters in one I spent some time on was the daily movement of Uvol/Dvol normalized. The signals, I swear, though if you don't research this yourself you'll ever deny it's not true, are an entire day lagged. I wouldn't trade that internal against the trend in momentum as you would MACD and the like. It's good confirmation continuation, though.
FWIW, some time ago I was researching basking trading automation techniques and one of the filters in one I spent some time on was the daily movement of Uvol/Dvol normalized. The signals, I swear, though if you don't research this yourself you'll ever deny it's not true, are an entire day lagged. I wouldn't trade that internal against the trend in momentum as you would MACD and the like. It's good confirmation continuation, though.

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