thanks, that works!
Regards, Sven
On Sat, Dec 26 2015 at 10:22:17 PM, Ethan A Merritt wrote:
> On Saturday, 26 December 2015 08:10:21 PM sfg...@gm... wrote:
>> Hi folks,
>>
>> I want to plot time series data where the color of a point depends on
>> the hour the data is measured (0 to 23 hour). But I can't figure out
>> how to do this. Here is my example:
>>
>> reset
>> set xlabel "Date"
>> set xdata time
>> set timefmt '"%Y-%m-%d %H:%M"'
>> set format x "%m-%d"
>> set xtics nomirror
>> set ylabel "Y"
>> set palette model RGB defined ( 0 'green', 23 'blue' )
>> set cbrange [0:23]
>>
>> T(N) = tm_hour(timecolumn(N,'"%Y-%m-%d %H:%M"'))
>>
>> plot '-' u 1:2:T(1) with linespoints axis x1y1 title 'Y' ps 2 lw 2 palette
>> "2015-12-15 Tue 07:40" 2.4
>> "2015-12-15 Tue 21:48" 1.7
>> "2015-12-16 Wed 08:13" 2.5
>> "2015-12-17 Thu 08:54" 2.6
>> "2015-12-17 Thu 21:41" 2.2
>> "2015-12-18 Fri 08:05" 2.1
>> "2015-12-19 Sat 10:35" 3.6
>> "2015-12-20 Sun 11:40" 3.6
>> "2015-12-21 Mon 09:32" 4.5
>> EOF
>>
>> I got "unknown type in magnitude()" error. Any hints how to resolve
>> this? Thanks, Sven
>
> There are several syntax errors there.
> I won't fix them all but here's a variant that works:
>
> H(N) = int(strcol(N)[16:*])
> plot '-' u 1:2:(H(1)) with linespoints title 'Y' ps 2 lw 2 lc palette
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