Hello,
I want to create a lineal graphic, but when there are not all the values of
the table of values, it does not paint the complete lines, but only the
consecutive points of measurement. One cannot paint a line from one value to
other skipping one or two columns of for way?

Example:

|A|1|2|3|4|
|B|1| |3|7|
|C|1|3|4|5|

The 'B' should paint a line from the value 1 to the value 3 and from value 3
to 7, but only one marks me the value and later a line of the value 3 to the
value 7.

How can I paint her does it complete?

Thank you.