What's the correct way for gnuplot to ignore data outside a given range?
I have been collecting temperature data at ten minute intervals and have been drawing for the past three days. I am currently using xrange
to constrain the plot range. Is it correct? I am concerned that gnuplot internally generates a plot for all data in the file and just shows what is in the range. This can be a problem when I have months of data.
Here's the gnuplot code:
#!/opt/local/bin/gnuplot
# Make PNG for iPhone
set terminal pngcairo enhanced background "#000000" font "Lato-Light,20" linewidth 1 rounded size 1366,660
set output "/Users/steve/Documents/Temperature History/temperatureHistory.png"
dataFileHistory = "/Users/steve/Documents/Temperature History/Temperature History.csv"
set datafile separator ','
set xdata time
# create function to ignore first four characters of time string
# http://stackoverflow.com/questions/26793373/how-to-ignore-timezone-in-csv-data
timefmt = "%b %d %H:%M:%S %Y"
timeval(s) = strptime(timefmt, substr(s, 5, strlen(s)))
set border linetype rgb "#666666"
set boxwidth 0.25 relative
set key off
#set style fill transparent solid 1
set style fill solid 1
set style line 1 linetype rgb "#666666" lw 2 #outside
set style line 2 linetype rgb "#990099" lw 3 #bedroom
set style line 3 linetype rgb "#999900" #upstairs
set style line 4 linetype rgb "#0055DD" #downstairs
set style line 5 linetype rgb "#666666" #grid
# X Axis
endTime = time(0) - 7*60*60 #Adjust for time zone
startTime = endTime-72*60*60
set xtics 6*60*60 format "%l %p" nomirror
set xrange [startTime:endTime]
# Y Axis
set ytics format "%2.0f°" nomirror
set grid ytics linestyle 5
plot dataFileHistory using (timeval(strcol(1))):2 with lines linestyle 1, \
dataFileHistory using (timeval(strcol(1))):3 with lines linestyle 2, \
dataFileHistory using (timeval(strcol(1))):4 with lines linestyle 3, \
dataFileHistory using (timeval(strcol(1))):5 with lines linestyle 4
# Make PNG for iPad
set terminal pngcairo enhanced background "#000000" font "Lato-Light,20" linewidth 1 rounded size 2048,689
set output "/Users/steve/Documents/Temperature History/temperatureHistory-iPad.png"
plot dataFileHistory using (timeval(strcol(1))):2 with lines linestyle 1, \
dataFileHistory using (timeval(strcol(1))):3 with lines linestyle 2, \
dataFileHistory using (timeval(strcol(1))):4 with lines linestyle 3, \
dataFileHistory using (timeval(strcol(1))):5 with lines linestyle 4
Here's some sample data:
Fri Jul 3 10:20:01 2015, 75.1, 80.0, 80.0, 75.0
Fri Jul 3 10:30:01 2015, 76.1, 80.0, 80.0, 75.0
Fri Jul 3 10:40:01 2015, 77.3, 80.0, 80.0, 75.0
Fri Jul 3 10:50:01 2015, 78.5, 80.0, 80.0, 75.0
Fri Jul 3 11:00:01 2015, 79.5, 80.0, 80.0, 75.0
Fri Jul 3 11:10:01 2015, 80.2, 80.0, 80.0, 75.0
Fri Jul 3 11:20:02 2015, 80.6, 80.0, 80.0, 75.0
Fri Jul 3 11:30:01 2015, 80.6, 80.0, 80.0, 75.0
Fri Jul 3 11:40:01 2015, 81.5, 81.0, 80.0, 75.0
Fri Jul 3 11:50:01 2015, 81.2, 81.0, 80.0, 75.0
Fri Jul 3 12:00:01 2015, 82.2, 81.0, 80.0, 75.0
Fri Jul 3 12:10:00 2015, 83.3, 81.0, 81.0, 75.0
Fri Jul 3 12:20:00 2015, 83.1, 81.0, 81.0, 75.0
Fri Jul 3 12:30:00 2015, 82.9, 81.0, 81.0, 75.0
Fri Jul 3 12:40:00 2015, 83.4, 81.0, 81.0, 75.0
Fri Jul 3 12:50:00 2015, 84.2, 81.0, 81.0, 75.0
Fri Jul 3 13:00:01 2015, 84.6, 81.0, 81.0, 75.0
Fri Jul 3 13:10:00 2015, 85.4, 81.0, 82.0, 75.0
Fri Jul 3 13:20:00 2015, 86.5, 81.0, 82.0, 75.0
Fri Jul 3 13:30:00 2015, 87.5, 81.0, 82.0, 75.0
Fri Jul 3 13:40:00 2015, 89.7, 81.0, 82.0, 75.0
Fri Jul 3 13:50:00 2015, 90.5, 81.0, 82.0, 75.0
Fri Jul 3 14:00:01 2015, 91.3, 81.0, 82.0, 75.0
Fri Jul 3 14:10:01 2015, 91.9, 82.0, 83.0, 75.0
Fri Jul 3 14:20:01 2015, 92.8, 82.0, 83.0, 75.0
Fri Jul 3 14:30:01 2015, 93.5, 82.0, 83.0, 75.0
Fri Jul 3 14:40:01 2015, 93.8, 82.0, 83.0, 75.0
Fri Jul 3 14:50:01 2015, 93.6, 82.0, 83.0, 75.0
Fri Jul 3 15:00:01 2015, 94.2, 83.0, 84.0, 75.0
Fri Jul 3 15:10:01 2015, 94.5, 83.0, 84.0, 75.0
Fri Jul 3 15:20:01 2015, 94.6, 83.0, 84.0, 75.0
Fri Jul 3 15:30:01 2015, 94.6, 83.0, 84.0, 75.0
Fri Jul 3 15:40:01 2015, 94.0, 83.0, 84.0, 75.0
Fri Jul 3 15:50:01 2015, 93.3, 83.0, 84.0, 75.0
Fri Jul 3 16:00:01 2015, 92.9, 83.0, 85.0, 75.0
Fri Jul 3 16:10:01 2015, 92.6, 83.0, 85.0, 75.0
Fri Jul 3 16:20:01 2015, 92.5, 83.0, 85.0, 75.0
Fri Jul 3 16:30:01 2015, 92.0, 83.0, 85.0, 75.0
Fri Jul 3 16:40:01 2015, 91.7, 83.0, 85.0, 75.0
Fri Jul 3 16:50:01 2015, 91.2, 83.0, 85.0, 75.0
Fri Jul 3 17:00:01 2015, 89.9, 84.0, 85.0, 75.0
Fri Jul 3 17:10:01 2015, 89.6, 84.0, 85.0, 75.0
Fri Jul 3 17:20:01 2015, 89.0, 84.0, 85.0, 75.0
Fri Jul 3 17:30:01 2015, 88.8, 84.0, 85.0, 75.0
Fri Jul 3 17:40:01 2015, 87.8, 84.0, 85.0, 75.0
Fri Jul 3 17:50:01 2015, 87.6, 84.0, 85.0, 75.0
Fri Jul 3 18:00:01 2015, 86.9, 84.0, 85.0, 75.0
Fri Jul 3 18:10:01 2015, 86.7, 84.0, 85.0, 75.0
Fri Jul 3 18:20:01 2015, 86.1, 84.0, 85.0, 75.0
Fri Jul 3 18:30:01 2015, 85.7, 84.0, 85.0, 75.0
Fri Jul 3 18:40:01 2015, 85.5, 84.0, 85.0, 75.0
Fri Jul 3 18:50:01 2015, 85.1, 84.0, 85.0, 75.0
Fri Jul 3 19:00:01 2015, 84.4, 84.0, 85.0, 75.0
Fri Jul 3 19:10:01 2015, 84.2, 85.0, 85.0, 76.0
Fri Jul 3 19:20:01 2015, 83.8, 85.0, 85.0, 76.0
Fri Jul 3 19:30:01 2015, 83.4, 85.0, 85.0, 76.0
Fri Jul 3 19:40:01 2015, 82.4, 85.0, 85.0, 76.0
Fri Jul 3 19:50:01 2015, 82.2, 85.0, 85.0, 76.0
Fri Jul 3 20:00:01 2015, 81.8, 85.0, 85.0, 76.0
Fri Jul 3 20:10:01 2015, 81.3, 85.0, 85.0, 76.0
Fri Jul 3 20:20:01 2015, 80.2, 85.0, 85.0, 76.0
Fri Jul 3 20:30:01 2015, 79.7, 85.0, 85.0, 76.0
Fri Jul 3 20:40:01 2015, 79.1, 85.0, 85.0, 76.0
Fri Jul 3 20:50:01 2015, 78.8, 85.0, 85.0, 76.0
Fri Jul 3 21:00:01 2015, 77.9, 85.0, 85.0, 76.0
Fri Jul 3 21:10:01 2015, 77.3, 85.0, 85.0, 76.0
Fri Jul 3 21:20:01 2015, 77.0, 85.0, 85.0, 76.0
Fri Jul 3 21:30:01 2015, 76.4, 85.0, 85.0, 76.0
Fri Jul 3 21:40:01 2015, 75.9, 85.0, 84.0, 76.0
Fri Jul 3 21:50:01 2015, 75.5, 85.0, 84.0, 76.0
Fri Jul 3 22:00:01 2015, 75.3, 85.0, 84.0, 76.0
Fri Jul 3 22:10:01 2015, 74.9, 85.0, 84.0, 76.0
Fri Jul 3 22:20:01 2015, 74.3, 85.0, 84.0, 76.0
Fri Jul 3 22:30:01 2015, 74.0, 85.0, 84.0, 76.0
Fri Jul 3 22:40:01 2015, 73.5, 84.0, 84.0, 76.0
Fri Jul 3 22:50:01 2015, 73.3, 84.0, 84.0, 76.0
Fri Jul 3 23:00:01 2015, 73.1, 84.0, 84.0, 76.0
Fri Jul 3 23:10:01 2015, 72.7, 84.0, 84.0, 76.0
Fri Jul 3 23:20:01 2015, 72.4, 84.0, 84.0, 76.0
Fri Jul 3 23:30:01 2015, 72.2, 84.0, 84.0, 76.0
Fri Jul 3 23:40:00 2015, 71.9, 84.0, 83.0, 76.0
Fri Jul 3 23:50:00 2015, 71.4, 84.0, 83.0, 76.0
Sat Jul 4 00:00:01 2015, 71.2, 84.0, 83.0, 76.0
Sat Jul 4 00:10:00 2015, 71.0, 84.0, 83.0, 76.0
Sat Jul 4 00:20:00 2015, 70.4, 84.0, 83.0, 76.0
Sat Jul 4 00:30:00 2015, 70.1, 84.0, 83.0, 76.0
Sat Jul 4 00:40:00 2015, 69.9, 84.0, 82.0, 76.0
Sat Jul 4 00:50:00 2015, 69.7, 84.0, 82.0, 76.0
Sat Jul 4 01:00:00 2015, 69.6, 84.0, 82.0, 76.0
Sat Jul 4 01:10:01 2015, 69.3, 84.0, 82.0, 76.0
Sat Jul 4 01:20:00 2015, 69.1, 84.0, 82.0, 76.0
Sat Jul 4 01:30:01 2015, 68.9, 84.0, 82.0, 76.0
Sat Jul 4 01:40:01 2015, 68.8, 84.0, 81.0, 76.0
Sat Jul 4 01:50:01 2015, 68.5, 84.0, 81.0, 76.0
Sat Jul 4 02:00:00 2015, 68.4, 84.0, 81.0, 76.0
Sat Jul 4 02:10:00 2015, 68.3, 83.0, 81.0, 76.0
Sat Jul 4 02:20:00 2015, 68.2, 83.0, 81.0, 76.0
Sat Jul 4 02:30:00 2015, 67.9, 83.0, 81.0, 76.0
Sat Jul 4 02:40:00 2015, 67.9, 83.0, 81.0, 76.0
Sat Jul 4 02:50:01 2015, 67.9, 83.0, 81.0, 76.0
Sat Jul 4 03:00:01 2015, 67.7, 83.0, 81.0, 76.0
Sat Jul 4 03:10:00 2015, 67.6, 83.0, 81.0, 76.0
Sat Jul 4 03:20:00 2015, 67.6, 83.0, 81.0, 76.0
Sat Jul 4 03:30:01 2015, 67.4, 83.0, 81.0, 76.0
Sat Jul 4 03:40:01 2015, 67.1, 83.0, 80.0, 75.0
Sat Jul 4 03:50:01 2015, 67.0, 83.0, 80.0, 75.0
Sat Jul 4 04:00:00 2015, 66.8, 83.0, 80.0, 75.0
Sat Jul 4 04:10:00 2015, 66.7, 83.0, 80.0, 75.0
Sat Jul 4 04:20:00 2015, 66.4, 83.0, 80.0, 75.0
Sat Jul 4 04:30:01 2015, 66.3, 83.0, 80.0, 75.0
Sat Jul 4 04:40:01 2015, 66.5, 83.0, 80.0, 75.0
Sat Jul 4 04:50:01 2015, 66.2, 83.0, 80.0, 75.0
Sat Jul 4 05:00:00 2015, 65.9, 83.0, 80.0, 75.0
Sat Jul 4 05:10:00 2015, 65.9, 82.0, 80.0, 75.0
Sat Jul 4 05:20:00 2015, 65.8, 82.0, 80.0, 75.0
Sat Jul 4 05:30:01 2015, 65.9, 82.0, 80.0, 75.0
Sat Jul 4 05:40:01 2015, 65.5, 82.0, 79.0, 75.0
Sat Jul 4 05:50:01 2015, 65.5, 82.0, 79.0, 75.0
Sat Jul 4 06:00:00 2015, 65.4, 82.0, 79.0, 75.0
Sat Jul 4 06:10:00 2015, 65.3, 82.0, 79.0, 75.0
Sat Jul 4 06:20:00 2015, 65.0, 82.0, 79.0, 75.0
Sat Jul 4 06:30:00 2015, 65.1, 82.0, 79.0, 75.0
Sat Jul 4 06:40:00 2015, 64.9, 82.0, 79.0, 75.0
Sat Jul 4 06:50:01 2015, 65.2, 82.0, 79.0, 75.0
Sat Jul 4 07:00:00 2015, 65.3, 82.0, 79.0, 75.0
Sat Jul 4 07:10:00 2015, 65.3, 82.0, 79.0, 75.0
Sat Jul 4 07:20:00 2015, 65.4, 82.0, 79.0, 75.0
Sat Jul 4 07:30:00 2015, 65.7, 82.0, 79.0, 75.0
Sat Jul 4 07:40:00 2015, 65.9, 82.0, 79.0, 75.0
Sat Jul 4 07:50:01 2015, 66.3, 82.0, 79.0, 75.0
Sat Jul 4 08:00:01 2015, 66.6, 82.0, 79.0, 75.0
Sat Jul 4 08:10:01 2015, 66.9, 81.0, 79.0, 75.0
Sat Jul 4 08:20:00 2015, 67.1, 81.0, 79.0, 75.0
Sat Jul 4 08:30:00 2015, 67.2, 81.0, 79.0, 75.0
Sat Jul 4 08:40:01 2015, 67.6, 81.0, 79.0, 75.0
Sat Jul 4 08:50:01 2015, 67.8, 81.0, 79.0, 75.0
Sat Jul 4 09:00:00 2015, 68.5, 81.0, 79.0, 75.0
Sat Jul 4 09:10:00 2015, 68.8, 81.0, 79.0, 75.0
Sat Jul 4 09:20:00 2015, 69.2, 81.0, 79.0, 75.0
Sat Jul 4 09:30:00 2015, 69.9, 81.0, 79.0, 75.0
Sat Jul 4 09:40:01 2015, 71.3, 81.0, 79.0, 75.0
Sat Jul 4 09:50:00 2015, 71.9, 81.0, 79.0, 75.0
Sat Jul 4 10:00:00 2015, 72.4, 81.0, 79.0, 75.0
Sat Jul 4 10:10:00 2015, 73.0, 81.0, 79.0, 75.0
Sat Jul 4 10:20:00 2015, 74.5, 81.0, 79.0, 75.0
Sat Jul 4 10:30:00 2015, 75.6, 81.0, 79.0, 75.0
Sat Jul 4 10:40:00 2015, 76.8, 81.0, 79.0, 75.0
Sat Jul 4 10:50:00 2015, 78.2, 81.0, 79.0, 75.0
Sat Jul 4 11:00:01 2015, 80.4, 81.0, 79.0, 75.0
Sat Jul 4 11:10:00 2015, 81.7, 81.0, 80.0, 75.0
Sat Jul 4 11:20:00 2015, 83.7, 81.0, 80.0, 75.0
Sat Jul 4 11:30:00 2015, 85.6, 81.0, 80.0, 75.0
Sat Jul 4 11:40:00 2015, 86.8, 81.0, 80.0, 75.0
Sat Jul 4 11:50:00 2015, 87.1, 81.0, 80.0, 75.0
Sat Jul 4 12:00:01 2015, 87.1, 81.0, 80.0, 75.0
Sat Jul 4 12:10:00 2015, 87.8, 82.0, 80.0, 75.0
Sat Jul 4 12:20:00 2015, 87.9, 82.0, 80.0, 75.0
Sat Jul 4 12:30:00 2015, 87.4, 82.0, 80.0, 75.0
Sat Jul 4 12:40:00 2015, 87.6, 82.0, 80.0, 75.0
Sat Jul 4 12:50:00 2015, 88.0, 82.0, 81.0, 75.0
Sat Jul 4 13:00:00 2015, 89.1, 82.0, 81.0, 75.0
Sat Jul 4 13:10:03 2015, 89.3, 82.0, 81.0, 75.0
Sat Jul 4 13:20:00 2015, 89.8, 82.0, 81.0, 75.0
Sat Jul 4 13:30:00 2015, 90.9, 82.0, 81.0, 75.0
Sat Jul 4 13:40:00 2015, 92.3, 82.0, 81.0, 75.0
Sat Jul 4 13:50:00 2015, 92.6, 83.0, 82.0, 75.0
Sat Jul 4 14:00:01 2015, 93.3, 83.0, 82.0, 75.0
Sat Jul 4 14:10:01 2015, 94.3, 83.0, 82.0, 75.0
Sat Jul 4 14:20:00 2015, 94.9, 83.0, 82.0, 75.0
Sat Jul 4 14:30:00 2015, 94.2, 83.0, 82.0, 75.0
Sat Jul 4 14:40:00 2015, 94.2, 83.0, 82.0, 75.0
Sat Jul 4 14:50:00 2015, 93.9, 83.0, 82.0, 75.0
Sat Jul 4 15:00:00 2015, 92.3, 83.0, 82.0, 75.0
Sat Jul 4 15:10:01 2015, 91.8, 83.0, 82.0, 75.0
Sat Jul 4 15:20:00 2015, 91.0, 83.0, 82.0, 75.0
Sat Jul 4 15:30:00 2015, 90.5, 83.0, 82.0, 75.0
Sat Jul 4 15:40:00 2015, 89.3, 83.0, 82.0, 75.0
Sat Jul 4 15:50:00 2015, 89.1, 83.0, 82.0, 75.0
Sat Jul 4 16:00:00 2015, 88.5, 84.0, 83.0, 75.0
Sat Jul 4 16:10:00 2015, 88.0, 84.0, 83.0, 75.0
Sat Jul 4 16:20:00 2015, 87.6, 84.0, 83.0, 75.0
Sat Jul 4 16:30:00 2015, 87.4, 84.0, 83.0, 75.0
Sat Jul 4 16:40:00 2015, 87.4, 84.0, 83.0, 75.0
Sat Jul 4 16:50:00 2015, 87.5, 84.0, 83.0, 75.0
Sat Jul 4 17:00:00 2015, 87.4, 84.0, 83.0, 75.0
Sat Jul 4 17:10:00 2015, 87.4, 84.0, 83.0, 75.0
Sat Jul 4 17:20:01 2015, 87.1, 84.0, 83.0, 75.0
Sat Jul 4 17:30:00 2015, 87.2, 84.0, 83.0, 75.0
Sat Jul 4 17:40:00 2015, 86.9, 84.0, 83.0, 75.0
Sat Jul 4 17:50:00 2015, 86.6, 84.0, 83.0, 75.0
Sat Jul 4 18:00:00 2015, 86.6, 84.0, 83.0, 76.0
Sat Jul 4 18:10:00 2015, 86.3, 84.0, 83.0, 76.0
Sat Jul 4 18:20:01 2015, 86.3, 84.0, 83.0, 76.0
Sat Jul 4 18:30:00 2015, 86.0, 84.0, 83.0, 76.0
Sat Jul 4 18:40:00 2015, 85.8, 84.0, 83.0, 76.0
Sat Jul 4 18:50:00 2015, 85.6, 84.0, 83.0, 76.0
Sat Jul 4 19:00:00 2015, 85.1, 85.0, 84.0, 76.0
Sat Jul 4 19:10:00 2015, 84.8, 85.0, 84.0, 76.0
Sat Jul 4 19:20:00 2015, 84.5, 85.0, 84.0, 76.0
Sat Jul 4 19:30:01 2015, 84.1, 85.0, 84.0, 76.0
Sat Jul 4 19:40:00 2015, 83.6, 85.0, 84.0, 76.0
Sat Jul 4 19:50:00 2015, 83.1, 85.0, 84.0, 76.0
Sat Jul 4 20:00:00 2015, 82.8, 85.0, 84.0, 76.0
Sat Jul 4 20:10:00 2015, 82.2, 85.0, 84.0, 76.0
Sat Jul 4 20:20:00 2015, 81.5, 85.0, 84.0, 76.0
Sat Jul 4 20:30:01 2015, 81.2, 85.0, 84.0, 76.0
Sat Jul 4 20:40:01 2015, 80.7, 85.0, 84.0, 76.0
Sat Jul 4 20:50:00 2015, 80.1, 85.0, 84.0, 76.0
Sat Jul 4 21:00:00 2015, 79.2, 85.0, 84.0, 76.0
Sat Jul 4 21:10:00 2015, 78.7, 85.0, 84.0, 76.0
Sat Jul 4 21:20:00 2015, 78.4, 85.0, 84.0, 76.0
Sat Jul 4 21:30:01 2015, 78.0, 85.0, 84.0, 76.0
Sat Jul 4 21:40:00 2015, 77.1, 85.0, 84.0, 76.0
Sat Jul 4 21:50:00 2015, 76.7, 85.0, 84.0, 76.0
Sat Jul 4 22:00:00 2015, 76.1, 85.0, 84.0, 76.0
Sat Jul 4 22:10:00 2015, 75.8, 85.0, 84.0, 76.0
Sat Jul 4 22:20:00 2015, 75.1, 85.0, 84.0, 76.0
Sat Jul 4 22:30:02 2015, 75.0, 85.0, 84.0, 76.0
Sat Jul 4 22:40:00 2015, 74.5, 85.0, 84.0, 76.0
Sat Jul 4 22:50:00 2015, 74.3, 84.0, 83.0, 76.0
Sat Jul 4 23:00:00 2015, 73.7, 84.0, 83.0, 76.0
Sat Jul 4 23:10:01 2015, 73.4, 83.0, 82.0, 76.0
Sat Jul 4 23:20:00 2015, 73.3, 83.0, 82.0, 76.0
Sat Jul 4 23:30:00 2015, 73.0, 83.0, 82.0, 76.0
Sat Jul 4 23:40:01 2015, 72.5, 83.0, 82.0, 76.0
Sat Jul 4 23:50:00 2015, 72.2, 83.0, 81.0, 76.0
Sun Jul 5 00:00:01 2015, 71.9, 83.0, 81.0, 76.0
Sun Jul 5 00:10:00 2015, 71.7, 82.0, 82.0, 76.0
Sun Jul 5 00:20:01 2015, 71.4, 82.0, 82.0, 76.0
Sun Jul 5 00:30:00 2015, 71.2, 82.0, 82.0, 76.0
Sun Jul 5 00:40:01 2015, 71.0, 82.0, 81.0, 76.0
Sun Jul 5 00:50:00 2015, 70.7, 82.0, 81.0, 76.0
Sun Jul 5 01:00:02 2015, 70.1, 82.0, 81.0, 76.0
Sun Jul 5 01:10:01 2015, 70.0, 81.0, 80.0, 76.0
Sun Jul 5 01:20:01 2015, 69.9, 81.0, 80.0, 76.0
Sun Jul 5 01:30:01 2015, 69.7, 81.0, 80.0, 76.0
Sun Jul 5 01:40:02 2015, 69.3, 81.0, 80.0, 76.0
Sun Jul 5 01:50:01 2015, 69.2, 81.0, 80.0, 76.0
Sun Jul 5 02:00:01 2015, 69.2, 81.0, 80.0, 76.0
Sun Jul 5 02:10:00 2015, 68.8, 81.0, 80.0, 76.0
Sun Jul 5 02:20:00 2015, 68.7, 81.0, 80.0, 76.0
Sun Jul 5 02:30:01 2015, 68.6, 80.0, 80.0, 76.0
Sun Jul 5 02:40:00 2015, 68.4, 80.0, 80.0, 76.0
Sun Jul 5 02:50:02 2015, 68.1, 80.0, 80.0, 76.0
Sun Jul 5 03:00:01 2015, 67.8, 80.0, 79.0, 76.0
Sun Jul 5 03:10:01 2015, 67.7, 80.0, 79.0, 76.0
Sun Jul 5 03:20:01 2015, 67.7, 80.0, 79.0, 76.0
Sun Jul 5 03:30:00 2015, 67.6, 80.0, 79.0, 76.0
Sun Jul 5 03:40:01 2015, 67.2, 79.0, 79.0, 76.0
Sun Jul 5 03:50:01 2015, 67.4, 79.0, 79.0, 76.0
Sun Jul 5 04:00:01 2015, 66.9, 79.0, 79.0, 76.0
Sun Jul 5 04:10:01 2015, 66.8, 79.0, 78.0, 76.0
Sun Jul 5 04:20:01 2015, 66.5, 79.0, 78.0, 76.0
Sun Jul 5 04:30:01 2015, 66.6, 79.0, 78.0, 76.0
Sun Jul 5 04:40:02 2015, 66.2, 79.0, 78.0, 76.0
Sun Jul 5 04:50:01 2015, 66.4, 79.0, 78.0, 76.0
Sun Jul 5 05:00:01 2015, 65.9, 78.0, 78.0, 76.0
Sun Jul 5 05:10:02 2015, 66.1, 78.0, 78.0, 76.0
Sun Jul 5 05:20:01 2015, 65.7, 78.0, 78.0, 76.0
Sun Jul 5 05:30:01 2015, 65.6, 78.0, 78.0, 76.0
Sun Jul 5 05:40:01 2015, 65.5, 78.0, 77.0, 75.0
Sun Jul 5 05:50:01 2015, 65.4, 78.0, 78.0, 75.0
Sun Jul 5 06:00:01 2015, 65.4, 78.0, 78.0, 75.0
Sun Jul 5 06:10:01 2015, 65.1, 78.0, 77.0, 75.0
Sun Jul 5 06:20:01 2015, 65.0, 78.0, 77.0, 75.0
Sun Jul 5 06:30:01 2015, 65.1, 78.0, 77.0, 75.0
Sun Jul 5 06:40:01 2015, 65.1, 78.0, 77.0, 75.0
Sun Jul 5 06:50:01 2015, 65.1, 78.0, 77.0, 75.0
Sun Jul 5 07:00:02 2015, 65.1, 78.0, 77.0, 75.0
Sun Jul 5 07:10:01 2015, 65.3, 77.0, 77.0, 75.0
Sun Jul 5 07:20:01 2015, 65.3, 77.0, 77.0, 75.0
Sun Jul 5 07:30:01 2015, 65.2, 77.0, 77.0, 75.0
Sun Jul 5 07:40:01 2015, 65.5, 77.0, 77.0, 75.0
Sun Jul 5 07:50:01 2015, 65.7, 77.0, 77.0, 75.0
Sun Jul 5 08:00:01 2015, 65.6, 77.0, 77.0, 75.0
Sun Jul 5 08:10:01 2015, 66.0, 77.0, 77.0, 75.0
Sun Jul 5 08:20:01 2015, 66.5, 77.0, 77.0, 75.0
Sun Jul 5 08:30:01 2015, 66.8, 77.0, 77.0, 75.0
Sun Jul 5 08:40:01 2015, 67.2, 77.0, 77.0, 75.0
Sun Jul 5 08:50:01 2015, 67.6, 77.0, 77.0, 75.0
Sun Jul 5 09:00:02 2015, 68.8, 77.0, 77.0, 75.0
Sun Jul 5 09:10:01 2015, 69.4, 77.0, 77.0, 75.0
Sun Jul 5 09:20:01 2015, 69.8, 77.0, 77.0, 75.0
Sun Jul 5 09:30:02 2015, 70.7, 77.0, 77.0, 75.0
Sun Jul 5 09:40:01 2015, 72.0, 77.0, 77.0, 75.0
Sun Jul 5 09:50:01 2015, 72.7, 77.0, 77.0, 75.0
Sun Jul 5 10:00:01 2015, 73.0, 78.0, 78.0, 75.0
Sun Jul 5 10:10:01 2015, 73.7, 78.0, 78.0, 75.0
Sun Jul 5 10:20:01 2015, 74.9, 78.0, 79.0, 75.0
Sun Jul 5 10:30:01 2015, 76.4, 78.0, 79.0, 75.0
Sun Jul 5 10:40:01 2015, 77.8, 78.0, 79.0, 75.0
Sun Jul 5 10:50:01 2015, 79.3, 78.0, 79.0, 75.0
Sun Jul 5 11:00:01 2015, 81.1, 79.0, 80.0, 75.0
Sun Jul 5 11:10:01 2015, 82.4, 79.0, 80.0, 75.0
Sun Jul 5 11:20:01 2015, 84.6, 79.0, 80.0, 75.0
Sun Jul 5 11:30:01 2015, 86.2, 79.0, 80.0, 75.0
Sun Jul 5 11:40:01 2015, 89.0, 79.0, 80.0, 75.0
Sun Jul 5 11:50:01 2015, 89.7, 79.0, 80.0, 75.0
Sun Jul 5 12:00:01 2015, 89.9, 79.0, 80.0, 75.0
Sun Jul 5 12:10:01 2015, 90.1, 80.0, 82.0, 75.0
Sun Jul 5 12:20:01 2015, 90.2, 81.0, 82.0, 75.0
Sun Jul 5 12:30:02 2015, 90.0, 81.0, 82.0, 75.0
Sun Jul 5 12:40:01 2015, 89.9, 81.0, 82.0, 75.0
Sun Jul 5 12:50:01 2015, 89.9, 81.0, 83.0, 75.0
Sun Jul 5 13:00:01 2015, 90.3, 81.0, 83.0, 75.0
Sun Jul 5 13:10:02 2015, 90.9, 81.0, 83.0, 75.0
Sun Jul 5 13:20:00 2015, 91.2, 81.0, 83.0, 75.0
Sun Jul 5 13:30:01 2015, 92.1, 81.0, 83.0, 75.0
Sun Jul 5 13:40:00 2015, 93.3, 82.0, 84.0, 75.0
Sun Jul 5 13:50:00 2015, 93.8, 82.0, 84.0, 75.0
Sun Jul 5 14:00:00 2015, 94.3, 82.0, 84.0, 75.0
Sun Jul 5 14:10:00 2015, 94.9, 82.0, 85.0, 75.0
Sun Jul 5 14:20:00 2015, 96.1, 82.0, 85.0, 75.0
Sun Jul 5 14:30:00 2015, 96.0, 82.0, 85.0, 75.0
Sun Jul 5 14:40:01 2015, 96.0, 83.0, 85.0, 75.0
Sun Jul 5 14:50:00 2015, 96.3, 83.0, 85.0, 75.0
Sun Jul 5 15:00:00 2015, 96.7, 83.0, 85.0, 75.0
Sun Jul 5 15:10:00 2015, 96.5, 83.0, 86.0, 75.0
Sun Jul 5 15:20:01 2015, 96.8, 83.0, 86.0, 75.0
Sun Jul 5 15:30:00 2015, 96.7, 83.0, 86.0, 75.0
Sun Jul 5 15:40:00 2015, 95.6, 84.0, 86.0, 75.0
Sun Jul 5 15:50:00 2015, 94.9, 84.0, 86.0, 75.0
Sun Jul 5 16:00:00 2015, 94.4, 84.0, 86.0, 75.0
Sun Jul 5 16:10:00 2015, 94.1, 84.0, 86.0, 75.0
Sun Jul 5 16:20:00 2015, 93.4, 84.0, 86.0, 75.0
Sun Jul 5 16:30:01 2015, 93.0, 84.0, 86.0, 75.0
Sun Jul 5 16:40:00 2015, 92.2, 84.0, 86.0, 75.0
Sun Jul 5 16:50:00 2015, 91.7, 84.0, 86.0, 75.0
Sun Jul 5 17:00:00 2015, 90.2, 84.0, 86.0, 75.0
Sun Jul 5 17:10:00 2015, 89.8, 84.0, 86.0, 76.0
Sun Jul 5 17:20:00 2015, 89.1, 84.0, 86.0, 76.0
Sun Jul 5 17:30:01 2015, 88.7, 84.0, 86.0, 76.0
Sun Jul 5 17:40:00 2015, 87.9, 85.0, 86.0, 76.0
Sun Jul 5 17:50:00 2015, 87.5, 85.0, 86.0, 76.0
Sun Jul 5 18:00:00 2015, 86.8, 85.0, 87.0, 76.0
Sun Jul 5 18:10:00 2015, 86.3, 85.0, 87.0, 76.0
Sun Jul 5 18:20:00 2015, 85.4, 85.0, 87.0, 76.0
Sun Jul 5 18:30:01 2015, 84.9, 85.0, 87.0, 76.0
Sun Jul 5 18:40:00 2015, 84.6, 85.0, 86.0, 76.0
Sun Jul 5 18:50:00 2015, 84.4, 85.0, 87.0, 76.0
Sun Jul 5 19:00:00 2015, 83.7, 85.0, 87.0, 76.0
Sun Jul 5 19:10:00 2015, 83.5, 85.0, 86.0, 76.0
Sun Jul 5 19:20:00 2015, 83.2, 85.0, 86.0, 76.0
Sun Jul 5 19:30:00 2015, 82.7, 85.0, 86.0, 76.0
Sun Jul 5 19:40:01 2015, 81.7, 85.0, 86.0, 76.0
Sun Jul 5 19:50:00 2015, 81.4, 85.0, 86.0, 76.0
Sun Jul 5 20:00:00 2015, 80.7, 85.0, 86.0, 76.0
Sun Jul 5 20:10:00 2015, 80.1, 85.0, 86.0, 76.0
Sun Jul 5 20:20:00 2015, 79.0, 85.0, 86.0, 76.0
Sun Jul 5 20:30:00 2015, 78.4, 85.0, 86.0, 76.0
Sun Jul 5 20:40:00 2015, 78.2, 84.0, 84.0, 76.0
Sun Jul 5 20:50:00 2015, 77.5, 82.0, 84.0, 76.0
Sun Jul 5 21:00:00 2015, 76.7, 82.0, 84.0, 76.0
Sun Jul 5 21:10:01 2015, 75.9, 80.0, 83.0, 76.0
Sun Jul 5 21:20:00 2015, 75.4, 80.0, 83.0, 76.0
This is what the plot looks like:
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2 answers
xrange
By simply setting , gnuplot can use at least some of the out-of-range points, depending on yrange
. For example, consider the following data:
1 2
2 3
3 4
4 5
Just plot this without any ranges:
Setting set xrange [1.5:*]
so that the first point lies outside ignores the first point:
However, the setting yrange
will also include this point even if it is out of range, for example. set xrange [1.5:*]; set yrange [2:5]
:
To exclude points correctly, you need to use a conditional plot telling gnuplot to ignore point ( 1/0
) if it is out of range:
xmin=1.5; xmax=4
set xrange [xmin:xmax]; set yrange [2:5]
plot "datafile" u ($1 >= xmin && $1 <= xmax ? $1 : 1/0):($2) w lp pt 7 not
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The short answer is:
The range set through set xrange
etc. determines the length of your axes. All points in the file are evaluated (you can explicitly restrict this with specifiers index
or every
, depending on the format of your data file).
Connectors are drawn by default if one of the points is inside, but not if both are outside. You can influence this with (un)set clip one/two
.
-
unset clip one
does not draw a line in relation to the origin -
unset clip two
(default) does not connect two distant points.
Switching values out of the required range to NaN (== 1/0), as in Miguels' answer, also works, but one can hardly understand why this is necessary.
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