Gap down screener and addcolumn

Gap down screener and addcolumn

umair
2013-02-14 04:38:33

a = histoprice(_close,1);
b = histoprice(_open,0);
var1 = b < a;
filter = var1;

Why is the above not working? I'm not getting any hits

I've also tried:

var1 = histoprice(_open,0) < histoprice(_close,1);
filter = var1;

And i'm trying to add this column to screener:

AddColumn("Column1",a);

or

AddColumn("Column1",histoprice(_close1));

Neither work. I believe the logic is correct?

umair
2013-02-14 05:18:48

im not sure why histoprice does not work in screener but the below works:

a = ref(close,1);
b = ref(open,0);
var1 = b < a;
filter = var1;

AddColumn("Open", ref(open,0));
AddColumn("close1", ref(close,1));

QuantShare
2013-02-14 16:25:15

It does work. Are you using an intraday time frame in your screener?
The "histoprice" function gets daily ohlc from intraday data.

umair
2013-02-14 19:45:48

No i'm using daily

QuantShare
2013-02-15 11:28:05

The "histoprice" should be used only with intraday data.

In daily data, to get previous data, simply using "ref" function.

umair
2013-02-16 21:22:24

whatsup QS, just curious if i'm doing the below correctly:

// Gapped down 100
z = close > 10;
x = sma(volume, 30) > 1000000;
a = ref(open,0) < ref(close,1);
b = day() != ref(day(), 1);
d = z and x and a and b;

I'm looking for stocks that have a close higher than 10, avg volume for 30 days > 1M and gap down

i know i have all the rules correct .. is d= also correct?

QuantShare
2013-02-18 10:10:54

Yes, it is correct. But "b" is not necessary since you are using EOD data so "b" variable will always be true.

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