[Gnuplot-info] plotting question

[János L. <jan...@ya...>]

Hi,

I have data in a format like this /the vertical bar is the field separator/:

<nyissz>
...
...
Oct 13, 2009 09:04:12	| 38	| 1014	| 8274	| 
Oct 13, 2009 10:03:58	| 4736	| 122244	| 305682	| 
Oct 13, 2009 11:05:08	| 9	| 243	| 2619	| 
Oct 13, 2009 12:04:58	| 9	| 243	| 2619	| 
Oct 13, 2009 13:04:59	| 4400	| 76199	| 664594	| 
Oct 13, 2009 14:05:24	| 30	| 390	| 3966	| 
Oct 13, 2009 15:05:32	| 23	| 299	| 3021	| 
Oct 13, 2009 16:04:42	| 23	| 299	| 3021	| 
Oct 13, 2009 17:03:59	| 1887	| 24247	| 239844	| 
Oct 13, 2009 18:03:40	| 1137	| 14533	| 140715	| 
Oct 13, 2009 19:03:41	| 1078	| 14010	| 146959	| 
Oct 13, 2009 20:03:46	| 1396	| 18052	| 180735	| 
Oct 13, 2009 21:04:09	| 611	| 7931	| 84091	| 
Oct 13, 2009 22:04:04	| 968	| 12512	| 131243	| 
Oct 13, 2009 23:03:30	| 390	| 5039	| 51131	| 
Oct 14, 2009 00:04:21	| 1086	| 11970	| 22373	| 
Oct 14, 2009 01:04:37	| 2192	| 24160	| 44163	| 
Oct 14, 2009 02:04:44	| 1462	| 16098	| 30005	| 
Oct 14, 2009 03:04:59	| 1386	| 15266	| 28330	| 
Oct 14, 2009 04:04:00	| 818	| 9006	| 17220	| 
Oct 14, 2009 05:04:45	| 682	| 7558	| 13971	| 
Oct 14, 2009 06:04:49	| 508	| 5704	| 18566	| 
Oct 14, 2009 07:04:12	| 797	| 10352	| 107065	| 
Oct 14, 2009 08:04:02	| 3049	| 39420	| 388044	| 
Oct 14, 2009 09:04:48	| 4481	| 58225	| 586845	| 
Oct 14, 2009 10:05:12	| 6	| 78	| 793	| 
Oct 14, 2009 11:04:23	| 6	| 78	| 793	| 
Oct 14, 2009 12:04:41	| 2308	| 29975	| 310276	| 
Oct 14, 2009 13:04:43	| 2279	| 29618	| 306754	| 
Oct 14, 2009 14:05:12	| 7	| 91	| 923	| 
Oct 14, 2009 15:04:42	| 7	| 91	| 923	| 
Oct 14, 2009 16:05:16	| 4	| 52	| 599	| 
Oct 14, 2009 17:04:56	| 4	| 52	| 599	| 
Oct 14, 2009 18:03:49	| 1217	| 15821	| 167101	| 
Oct 14, 2009 19:03:36	| 1095	| 14235	| 150375	| 
Oct 14, 2009 20:03:25	| 1349	| 17526	| 181248	| 
Oct 14, 2009 21:03:12	| 748	| 9724	| 109797	| 
Oct 14, 2009 22:03:13	| 757	| 9841	| 103538	| 
Oct 14, 2009 23:03:04	| 371	| 4836	| 50956	| 
Oct 15, 2009 00:04:24	| 486	| 6241	| 64914	| 
Oct 15, 2009 01:04:34	| 1761	| 22651	| 228304	| 
Oct 15, 2009 02:04:56	| 1169	| 15043	| 152581	| 
Oct 15, 2009 03:05:06	| 2	| 26	| 260	| 
Oct 15, 2009 04:04:16	| 2	| 26	| 260	| 
Oct 15, 2009 05:04:28	| 738	| 9352	| 95825	| 
Oct 15, 2009 06:04:35	| 515	| 6640	| 70286	| 
Oct 15, 2009 07:04:09	| 598	| 7774	| 81384	| 

...
..
<nyassz>

it spans for almost a year like this.  I am multi plotting the second, third and forth columns  dependencies on the first column.  I can also pass data intervals  to select just a portion of the data - let say from "Oct 14, 2009 00:04:21" to "Oct 14, 2009 23:03:04".  

I also would like to plot the fourth column dependency on the second or third column, BUT only for the given time interval.  I looked the book, but found no direction how to filter the data, if the filtering is not used as one of the axes.

Any good suggestions ?

Thanks ahead,

János