[Gnuplot-info] Grid lines triggered by time-statement

[Til S. <li...@li...>]

Hi,

I have data with some lines containing the time but others don't.
Example:

Index;Time;Value
1;;3
2;11:00;1
3;;2
4;;4
5;11:45;2

How do I plot grid lines only for every x-value containing a
time-statement? The plot should look like this:

4		|		X	|
3	X	|			|
2		|	X		X
1		X			|
---------------------------------------------
	|	|	|	|	|
		11:00			11:45

Regards
Til