| erdoc888 3 posts
 msg #146960
 - Ignore erdoc888
 | 3/17/2019 9:10:57 AM 
 Has anyone constructed a summed smoothed multi ROC like IBD's relative strength?
 
 I think the formula is : ((((C - C63) / C63) * .4) + (((C - C126) / C126) * .2) + (((C - C189) / C189) * .2) + (((C - C252) / C252) * .2)) * 100 but am not sure how to write it in SF.
 
 Any ideas???
 
 Thanks
 
 
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| graftonian 1,089 posts
 msg #146968
 - Ignore graftonian
 | 3/17/2019 3:40:04 PM 
 
 
 
 
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| erdoc888 3 posts
 msg #147328
 - Ignore erdoc888
 | 4/12/2019 8:34:01 AM 
 Thank you graftonian!!!
 
 
 
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| graftonian 1,089 posts
 msg #147336
 - Ignore graftonian
 | 4/12/2019 2:22:41 PM 
 Erdoc,  Copy and paste the following to do a little manual backtesting.
 
 /*for backtest*/
 set{signal, count(ibd crossed above spyrsi, 1)}
 draw signal
 signal equals 1
 
 With a little work I think this theory could yield some good results
 Graf
 
 
 
 
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| robertczeko 3 posts
 msg #156822
 - Ignore robertczeko
 | 5/17/2021 7:54:45 AM 
 Hello Graftonian, thank you very much for this formula.
 I am not sure, wheter there is for ibd calculation some error in this line:
 
 set{var63, var63b * 25230}
 
 I compared it with formula for Spyrsi and there is:
 
 set{spy63, spy63b * 30}
 
 So I corrected it for ibd.
 
 
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