StockFetcher Forums · General Discussion · Understanding SLOPE screening and cutoff values<< >>Post Follow-up
vixvix
4 posts
msg #114947
Ignore vixvix
8/18/2013 1:37:07 PM

For the screen listed below, can someone explain more of what the cutoff value -0.50 represents?
I am assuming that the value if plotted on a Y axis would range from +1.00 to -1.00 for the data regression?


show stocks where the 25 day slope of the RSI(15) is below -0.50

four
4,012 posts
msg #114948
Ignore four
modified
8/18/2013 1:56:29 PM

perhaps

definition: http://www.basic-mathematics.com/what-is-slope.html

calculation: http://www.basic-mathematics.com/how-to-find-the-slope.html

vixvix
4 posts
msg #114949
Ignore vixvix
8/18/2013 2:59:27 PM

Thank you.

But for StockFetcher screening of indicators, will the respective values be between +1.0 and -1.0 ?

four
4,012 posts
msg #114950
Ignore four
modified
8/18/2013 3:25:39 PM

Values are not restricted between 1 and -1 on Stockfetcher:

http://www.stockfetcher.com/forums/Indicators/Slope-Of/34498

- - - - - Quote - - - - - (bold is my emphasis)

Values above 0 indicate an uptrending measure. Positive values above 1.0 indicate the measure has effectively doubled from start to the end.

Values below 0 indicate a measure which is trending down.

Values near 0 mean that the measure is moving horizontally. This does not mean the values didn't move up or down during the specified time interval, just that the start point is near the end point.

pirate67
99 posts
msg #114951
Ignore pirate67
modified
8/18/2013 4:57:52 PM

Four, your responses are correct as far as what slope measures should be, but take a look at the lower slope charts in these filters. You can clearly see that there are no below 0 values when the stock is going down. Also, since slope is defined as the change in the "Y" values (from one point to the another) divided by the change in the same two points "X" values, the graph numbers have to be something else. In all cases the change of "X" has to be 1 (one day). So, basically the slopes should be the actual change of the two points' "Y" values. This would make it hard to have a criteria or compare different priced stocks. Looking at the values on the lower chart, I am going to guess that absolute % change is in the calculation. Maybe SF can clarify this.

four
4,012 posts
msg #114954
Ignore four
modified
8/18/2013 10:29:12 PM

but take a look at the lower slope charts in these filters. You can clearly see that there are no below 0 values when the stock is going down.

-- -------

pirate67,

---->> I offer this observation (AAT : 25 days ago and 8/16/2013). A negative slope of rsi(15). And a lower rsi(15) today than 25 days ago.


25-day Slope of RSI(15) = -1.25

62.60 = rsi(15) 25 days ago
33.06 = todays rsi(15)

33.60 = close 25 days ago
31.25 = today's close


Fetcher[
symlist(aat)
show stocks where the 25 day slope of the RSI(15) is below -0.50
add column 25 day slope of the rsi(15)
add column separator
add column rsi(15) 25 days ago {25ago rsi}
add column rsi(15) 8/16/2013 {todays rsi}
add column separator
add column close 25 days ago {25ago close}
add column close 8/16/2013 {todays close}
add column separator
offset 8/16/2013
]



pirate67
99 posts
msg #114956
Ignore pirate67
8/19/2013 12:56:59 AM

Four, you are totally correct. It shows up properly on the result's column. The lower graph scale I was referring to was the RSI values not any quantification of the slope line. The slope line is merely drawn.Just adding two lines to your filter gets us what we want:

Fetcher[
symlist(aat)
show stocks where the 25 day slope of the RSI(15) is below -0.50
add column 25 day slope of the rsi(15)
add column separator
add column rsi(15) 25 days ago {25ago rsi}
add column rsi(15) 8/16/2013 {todays rsi}
add column separator
add column close 25 days ago {25ago close}
add column close 8/16/2013 {todays close}
add column separator
offset 8/16/2013
set{rsislope25, 25 day slope of the rsi(15)}
draw rsislope25
]




StockFetcher Forums · General Discussion · Understanding SLOPE screening and cutoff values<< >>Post Follow-up

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