HELP! how to plot a derived cross

[MarcB]

How do you plot (possibly with a candle plot) the difference of two crosses, for example

EUR/USD - GBP/EUR ?

Thanks

[Ray]

'How to plot compound crosses ????????????????'

[MarcB]

Thank you for your answer.

I have another question.

I need to determine the open, close, low, high of the quantity

EUR/USD - GBP/EUR

the problem is that for the open and the close there is no problem, but how can you find the low and the high for EUR/USD - GBP/EUR ?

In other words given the candle for EUR/USD and the candle for GBP/EUR how do you find the low and the high for EUR/USD - GBP/EUR ?

Thy reach low an high at different times

[MarcB]

marcb wrote >>

Thank you for your answer.

I have another question.

I need to determine the open, close, low, high of the quantity

EUR/USD - GBP/EUR

the problem is that for the open and the close there is no problem, but how can you find the low and the high for EUR/USD - GBP/EUR ?

In other words given the candle for EUR/USD and the candle for GBP/EUR how do you find the low and the high for EUR/USD - GBP/EUR ?

Thy reach low an high at different times

May be I did not expalin very well... I try again

it is necessary to think that you have two variables

X(t)=[EUR/USD](t)

Y(t)=[GBP/EUR](t)

now what we are trying to build is the function

Z(t)=X(t)-Y(t) for any time instant t

what we have is a candle each tick for both X and Y, how can you determine the Low for Z() in that tick?

The problem is that X and Y reach Low and High at different times within that tick hance just taking the difference of Low and high of X and Y is not correct