[malaguti]

Malaguti,
  I like the idea of using the 52 week average of the sector to the index.  Would you mind sharing more details on where you're able to find that information and how you are using that?  What are some resources you all use that have sector indexes?

i get the information from yahoo finance, using the ETFs for the sector
XLY,XLP,XLE,XLF etc
and then use the same calculation for the stock vs the index, i use the above for the stock against SPY
within amibroker it looks like this
RP = Close / Foreign( "SPY", "Close" ) * 100 ;
MARP = MA(RP,52);
MRP = (( RP / MARP) - 1 ) * 100 ;


so where RP is the stock's close i use first the stocks close against the sector
AMZN/XLY for example and then use XLY/SPY
two separate calculations gives me the strength of the stock and the strength of the sector

hope this makes sense
whenever i now run an exploration (scan) in amibroker it gives me the relative strength of each