[isatrader]

I'm currently looking at whether the % stocks which have the Mansfield Relative Strength above the zero line and whether the zero line is rising is a useful breadth measure.  These additional calculations are very slow and I'm trying to work out whether I have bugs in my code or whether this is not a very useful parameter to measure?

Weekly Mansfield RS Above Zero Line is one of the ten conditions of the SATA score. However, a rising MA is not a requirement as it often doesn't start rising until months later.

You also need to make sure that you are adjusting all of your data for splits and dividends, as any calculations will be wrong otherwise, as unadjusted data breaks the various indicators. Especially if any rely on high and low data points. i.e. breakouts and breakdowns measures, or resistance levels.