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<FONT face=Arial
color=#0000ff size=2>try filter = roc(c,102) == isnull;
<FONT face=Arial
color=#0000ff size=2>
<FONT face=Arial
color=#0000ff size=2>= is for assignments
<FONT face=Arial
color=#0000ff size=2>
<FONT face=Arial
color=#0000ff size=2>== is for comparing
<FONT face=Arial
color=#0000ff size=2>
<FONT face=Arial
color=#0000ff size=2>d
From: Jim [mailto:bankedout@xxxxxxxxxxxxx]
Sent: Friday, January 16, 2004 3:22 PMTo:
amibroker@xxxxxxxxxxxxxxxSubject: [amibroker] Re: Exploration to find
"Empty" values
"> If they haven't been trading you should be able to filter
on Close. > Either way, check out the IsNull
function."I want them to be trading. I'm looking for stocks with
less than 2 years of price history. Initial Public Offerings
etc.I tried this:Filter= ROC(C,102)=IsNull;AddColumn
(ROC(C,104),"2yr%chg"); And then tried pushing Explore. Amibroker
does not like this. It points to right before the = sign and tells me
I have a syntax error. I'm trying to "tell" Amibroker that I want
those stocks which have ROC(C,102) value of "nothing" (not ZERO).Any
ideas?Jim------------------------------------------------------------------------
In amibroker@xxxxxxxxxxxxxxx, "sloughbridge" <sloughbridge@xxxx>
wrote:> --- In amibroker@xxxxxxxxxxxxxxx, "Jim"
<bankedout@xxxx> wrote:> > Hello,> > > > I
am wondering how to do something with an exploration.> > > >
If I Filter my database for Close > Zero, it will return all of my
> > stocks.> > > > If I then Add a Column which
displays the Rate of Change for the > > Close,102 weeks This
displays mostly stocks with a number value. > > Either
positive or negative, depending on how their price has > > changed
over the past 2 years.> > > > But, if I sort by this ROC 2
years column, there are quite a few > > results where there is no
value. I'm guessing these are issues > > which haven't been
trading for 2 years.> > > > How do I screen specifically for
ROC(C,120)="No Value"> > > > What do I put in place of "No
Value"?> > If they haven't been trading you should be able to
filter on Close. > Either way, check out the IsNull
function.Send BUG REPORTS to bugs@xxxxxxxxxxxxxSend
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