ProTA is an end of day software program. So it's a one off fee for the program and then you need to get data, so you can either buy a subscription to someone or get it free like I do from Yahoo. For that I bought an add on for it called StockXloader which lets you download the free data from Yahoo finance. But ProTA can be hooked up to most paid for data providers I believe so explore your options.
Originally Posted by rama3124
You can find the explanation of how the Mansfield Relative Strength is created on Chartmill's site here: http://www.chartmill.com/documentati...explanation%29 and they have the Mansfield Indicator built into their free web based charts.
Or here is the code for ProTA (This is for the weekly chart only as you'll need to make another one for the daily chart using the 200 day MA instead):
1. Create a custom indicator called: Relative Strength Dorsey
2. Put this code in it:
3. Create another custom indicator called: Relative Strength Dorsey 52W MA
C/XREF("^GSPC", I, C, N, "NormDate")*100
4. Put this code in it:
5. Create a custom indicator called: Relative Strength Mansfield Weekly
MA(52, S, FN("Relative Strength Dorsey"))
6. Put this code in it:
7. Then open a new chart and select "Indicator, then Custom Indicator, then Relative Strength Mansfield Weekly and it will appear at the bottom of your chart. You can then save it as a template once your happy with the style.
((RelPerf("^GSPC", I, C, N, "NormDate") / FN("Relative Strength Dorsey 52W MA")) -1) *100
Hope that helps.