hey ifiaas.... most of your post i could not clearly understand.... as far as the hide the trend line before date x that can be obtained by including a date component in the code... here is a post where some of the better coders , henry, roy, jose, wabbit, talked of the differing methods....

below is a example of that code.....

now for the parts i didnt understand.... by plot the some function are you meaning the sum function ...... and if so, are you summing 1 security closing prices or many.... h

summing volume from a certain date

==========================

pnt:=Input("close=1, high=2, low=3",1,5,1);
pds1:=Input("fast macd periods 1",2,100,5);
pds2:=Input("slow macd periods 2",3,100,9);
pds3:=Input("moving average trigger periods 3",2,100,3);

m:=Input("month",1,12,1);
d:=Input("day",1,31,3);
{y:=Input("year",1990,2010,2006);}

0;
upv:=Cum(If(If(pnt=2,H,If(pnt=3,L,C))>Ref((If(pnt=2,H,If(pnt=3,L,C))),-1),V,0));
dnv:=Cum(If((If(pnt=2,H,If(pnt=3,L,C)))<Ref((If(pnt=2,H,If(pnt=3,L,C))),-1),V,0));
a:=upv-dnv;
aa:=ValueWhen(1, Month()=m AND DayOfMonth()=d AND Year()=2005,a);

aaa:=a-aa;

b:=Mov(aaa,pds1,W)-Mov(aaa,pds2,W);

bb:=Mov(b,pds3,W);

b;bb

==========================

I see my mistake. Ref(Close,100) shift the plot to left for 100 period. Ref(Close,-100) shift the plot to the right for 100 period. So when I want to show Close curve from 100 to today I should do the following:

Ref(Ref(Close,100),-100)

Thank you, friends.

hey ifiaas.... that ref code did look funny to me but when you said it worked i figured i had no clue as to what your doing....

Ref(Close,-100); , will plot the closing prices shifted 100 bars/days to the right.... so the closing price plotted today by the indicator is the actual closing price from 100 bars/days ago.... if you scrolled back in time to the very first bar on your chart you'll see the indicator did not plot anything for the first 100 days.... the indicator is just shifting the plot to the right...... it removes the last true 100 days.....

that might not be what your after.... people sometime use shifted plots to predict seasonal patterns.... similar to the adage, 'sell in may and go away'.... if we plotted the 'qqqq' with prices offset , we might see the downturn coming......h

Ref(Ref(Close,100),-100) ???

hey jose..... sure sounds funny to ask this but are you sure about that..... i might be overlooking something but that looks like it's shifting 100 to the left only to shift 100 back to the right..... so you end up back where you started..... kinda like shifting back from 100 days into the future....

seems like Ref(CLOSE,-100) would remove 100 bars......h

obviously i have no clue as to the goal here....

Ref(Close,-100) only delays Close by 100 bars.

yes.... which removes them from the chart....

Plot it and try it - seeing is believing ...

well of course that occured to me.... but i can't see it.... the Ref(Ref(Close,100),-100) which is overlayed on the price bars plots only the close, no shift no removal.....

but anyway, forex is calling and losses are mounting.... who said it was easy money......h

hey jose.... that i did notice but for the life of me could not see any point in deleting anything on that end of the chart..... i can see a point in adjusting on the most current end of the chart so my focus as there.....

kinda figured i was missing the point somehow...... thanks ......h

Think I've found the problem...

Since Metastock allow 500 history length. When the there are more than 500 bars in the chart, on each day, the oldest bar has to be moved out to allow the new bar to come in. Since my curve is anchored by (starting from) a index number of the bar (# of bars from the left border of current view window) instead of the exact date, as the oldest bar shifts out, the curve is now anchored to the date after the previously anchored day.

I think the solution is that, I have to change the anchor to specific date instead of a index number of the bar, so that my curve would shift together with the bars.

Thanks.

Asish,

You are right, thank you!