Hi Peter1,

Did some work on this and have found a couple of remedies, also made an
insufficient data checker indicator to display where the missing bars are, which
all look to be trading halts.   Load symbol XAO and you can insert the
security eg. QGC BKN in a lower pane to compare them.

{ Insufficient Data Checker Indicator }
[description="Flags Missing Data, compare to XAO"]

method := inputma("Method",S);

period:= input("Period",200,1);

symb := inputsymbol("Compare bars to", "QGC");

stock:=LoadSymbol(symb,C);

[target=price; color=aqua; width=2]

ma(C,period,method);

[color=Crimson]

[Name=" "; linestyle=Marker; marker=short]

if(stock=0,1,0);

[linestyle=Text; textalign=Above,Center]

if(stock=0,"MISSING",undefined);

High;

Now for the remedies..  You could just scan weekly that'l work eg. 41 weekly
appears to be equivalent to a 200day MA.  Hardly elegant, but it works.
Alternatively you can add this indicator which only calculates the Moving Average
on the last bar of the chart. Then select 'indicator signal' to use it in a scan,
that seems to get around it.

{ Moving Average Insufficient Data bypass surgery }

[description="Include scanning of stocks with insufficient data"]

method := inputma("Method",S);

period:= input("Time periods",200,1);

dataOk := isdefined(C) and C > 0; { does not work because no zero data to be found }

[Target=price; linestyle=points; color=blue]

if(barnumber=lastvalue(barnumber) AND C>ma(C,period,method),ma(C,period,method),undefined);

[linestyle=marker; marker=type2; name=x]

condition:=if(barnumber=lastvalue(barnumber) AND C>ma(C,period,method),1,0);

condition;

oo nope still not working on daily... must have been testing on weekly.. will find a way to do that soon.   I have in mind just to sum the data into a variable and divide by the period input to get a  simple MA result and use that as an indicator signal.   Should work in theory... as i suspect it's an internal dummy spit by the ma() function.