Make an XY chart instead. You can connect the markers with lines in both
types of charts.

http://peltiertech.com/WordPress/200...-vs-xy-charts/

- Jon
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Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
Peltier Technical Services, Inc. - http://PeltierTech.com
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"Frank_C" wrote in message
...
hi, i don't know how to create a line-chart with 2 sets of data, they have
different size. Say set_1 has x-axe from 0 - 12 with 150 intervals. Set_2
has
x-axe from 0-14 with 130 intervals. How to put them into a single line
chart?