Hello. I'm using gnuplot-3.7.1-12, and I'm trying to make some png images, with data containing dates and times.
The script seems to be ok but the last line, the plot command. It returns a "illegal day of month" error. I inspired from timedat.dem, replacing or changing instructions to fit my data format:
16/05/2003 23:50 4 720 997
16/05/2003 23:40 7 630 734
Data consists of every 10 minutes log for the day. Columns are separated with tabs
Time format is defined like this:
set timefmt "%d/%m/%Y\t%H%M"
Time range was defined like this, assuming the data only contains today's logs:
set xrange [ "16/05/2003":"16/05/2003" ]
I want to plot hours (x) vs value (y)
The plot command was defined like this:
plot 'timedat.dat' using 2:3 t ''
I also kept the other settings found in timedat.dem, and adapted, and started the script with:
set term png medium color
But I always get this "illegal day of month" error, and can't find where the bug is.
Has anyone ever had this error ?
You have two choices:
set timefmt '%H:%M"
plot 'timefmt.dat' u 2:3
or keep your timefmt, get rid of the set xrange, and then
plot 'timefmt.dat' u 1:3
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