Ref(H,1) > H scannable problem

tintry

Hi Matthew
,

Found the Ref(H,1) > H is not scannable in metastock, while H > Ref(H,-1) is scannable.
Is any constraint on metastock which cause Ref(H,1) > H is not scannable ?

Thank you.

admin

Function: Reference [ref()]


SYNTAX      ref( DATA ARRAY, PERIODS )
FUNCTION      References a previous or subsequent element in a DATA ARRAY. A positive PERIOD references "n" periods in the future; a negative PERIOD references "n" periods ago.

EXAMPLE      The formula "ref( CLOSE, -12 )" returns the closing price 12 periods ago. Thus, you could write the 12-day price rate-of-change (expressed in points) as "C - ref( C, -12 )."

The formula "ref( C, +12 )" returns the closing price 12 periods ahead.


如是掃過住某日的後一天H > 前一天H 或可以,
但如果是今天的就一定不可以, 因為沒有未來數據~

tintry

Hi Matthew, thank you for your reply.

I tested below, but still found it's not scannable.....

test:=Ref(H,1) > H;
sum(test,10)>=1

I added the formula in Expert advisor and attached in stock, it highlight some candlesticks, however, when i scan in "The explorer" , no stock can be shown in report (I added the formula in colA and the filter already added colA>0)

admin

test:=Ref(H,1) > H;
這一句的意思是:

"明天"的H > 今天的高......你想想問題便知道!

如果係用EXPLORER 掃瞄, 於沒有指定日期下,
只會用最後一筆計算, 那便沒有 "明天" 即未來日子數據,
這樣當然不會有結果可以出到~

tintry

O, Thank you very much Matthew,

I tried to set the "Exploration Options" to "Specific Date" (2011/1/10), the formula change to

test:=Ref(H,1) > H;
Sum(test,2)>=1

However, i cannot scan the stock also....
May i know how to set the date so that the above formula still be scannable?

Thank you very much again~~

admin

還不明白我的意思吧?!  

不如你調轉找吧 ~
因為對最新一筆資料來說,
沒有可能 會有 明天的資料"高位" 存在,
這個 邏輯上己出現問題,

但可以今天高位比昨天高,
因為今天及昨天的資料都己經存在 !!

test:=ref(H,-1) < H;
sum(test,2)>=1

tintry

O, icic~~

Thank you very much, matthew~