Select the first series of XY values, Insert Chart XY, & select options to
suit.
Go back to your data sheet, select your second series of XY values, copy, go
back to the chart, Edit/ Paste Special/ new series/ X values in first
column.
--
David Biddulph

"patounette" wrote in message
...
I need to know how can I plot in the same graph several sets (x,y) with
different (and independent) values of the x for each. The scale is the
same,
but the values are different for each group. For example, in one of the
sets,
I have the y values for x=314,416.5,1290... and in other, I have the y
values
for x= 50,147,670... And I want to have the two different lines in the
same
graph, but one sparated from the other.