Problem creating graph with gnuplot with time on x-axis Post: 302794355

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Top Forums Shell Programming and Scripting Problem creating graph with gnuplot with time on x-axis Post 302794355 by hakro807 on Monday 15th of April 2013 05:54:11 PM

04-15-2013

Registered User

I succeeded in creating a good-looking graph for the last 60 minutes. Format for data is

Code:

hh:mm value1 value2

Code:

set terminal png
set output "hour_graph.png"
set yrange [10:50]
set ylabel "Temperatur Celsius/Luftfuktighet procent"
set timefmt "%H:%M"
set xdata time
set xtics "00:00", 900, "24:00" #guess it will mess up temporarily at 24:00
set mxtics 3 #a small tic every five minute
set format x "%H:%M" #set format x was needed to format the x axis as hh:mm, not hh:mm:ss

plot "./hour_graph_values" using 1:2 title 'Temperatur' with lines, \
"./hour_graph_values" using 1:3 title 'Luftfuktighet' with lines

Would still love to know the syntax for letting gnuplot deal with both date and time.
At the moment the main log is in the following format:
yyyy-mm-dd hh:mm value1 value2

I just can't believe gnuplot would not be able to deal with something which most be so common.

hakro807

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LEARN ABOUT DEBIAN

gpiv_piv2gnuplt

GPIV_PIV2GNUPLT(1)					      General Commands Manual						GPIV_PIV2GNUPLT(1)

NAME

       gpiv_piv2gnuplt - Converts PIV data gnuplot data.

SYNOPSIS

       gpiv_piv2gnuplt [-al int] [-au int] [-h | --help] [-p | --print] [-s float] [-v | --version] [-z] filename

DESCRIPTION

       gpiv_piv2gnuplt converts PIV data to gnuplot vectors for displaying and printing PIV the estimators in a graphical way.

       This  program  does  not  use  the parameter resources from libgpiv. The parameters may be defined by the command line options as explained
       below.

Options
       -al  L Draws an annotation vector with length L.

       -al  UNIT
	      Define unit of annotation vector (defaul m/s).

       -h | --help
	      On-line help.

       -p | --print
	      Prints parameters to stdout.

       -s  SCALE
	      Scale factor for graphic output with gnuplot.

       -v | --version
	      Print version information on standard output, then exits successfully.

       -z     Full zoom (for scaled data).

       filename
	      Filename containing the input PIV data.

SEE ALSO

       gpivtools

AUTHOR

       Gerber Van der Graaf

								  9 November 2006						GPIV_PIV2GNUPLT(1)