Problem creating graph with gnuplot with time on x-axis Post: 302789799

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Top Forums Shell Programming and Scripting Problem creating graph with gnuplot with time on x-axis Post 302789799 by hakro807 on Thursday 4th of April 2013 08:30:12 AM

04-04-2013

Registered User

Problem creating graph with gnuplot with time on x-axis

Let me start by saying I'm new to gnuplot and not very good at unix at all..

Anyway, I'm each minute measuring temperature and humidity and saves the last 60 readings along with time in a textfile, values_minute.

The contents of the file is formatted like this: time temperature humidity

Code:

14:10 22.8 19.1
14:11 22.8 19.1
14:12 22.8 19.1
14:13 22.8 19.0
14:14 22.8 19.0
14:15 22.8 19.0
14:16 22.8 19.0
etc...

I'm trying to create a graph using gnuplot, working with the shell first. Later I will do it with a script that will run once a minute to generate a "realtime" graph to be publish on a web site.

Code:

gnuplot
set terminal png
set output "graph_realtime.png"
set yrange [10:50]
plot "./values_minute" using 1:2 title 'Temperature' with lines; \
"./values_minute" using 1:3 title 'Humidity' with lines

But I'm given the error "invalid command". I'm quite frankly lost.

Last edited by radoulov; 04-04-2013 at 10:09 AM..

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LEARN ABOUT DEBIAN

xpl2gpl

XPL2GPL(1)						      General Commands Manual							XPL2GPL(1)

NAME

       xpl2gpl - Convert tcptrace-style xplot input to gnuplot input.

SYNOPSIS

       xpl2gpl [-s] <file_name>

DESCRIPTION

       xpl2gpl	is a utility that converters tcptrace-style xplot input to gnuplot input.  This converter gives a nearly perfect gnuplot reproduc-
       tion of the corresponding xplot graph.

OPTIONS

       -s     Seperate files.  If you wish to plot only some data from the xpl file, you may use the -s option, which generates a bunch  of  data-
	      files filtered based on the color and plotting style.

EXAMPLES

       xpl2gpl foo.xpl

       This  would  produce files by the names "foo.gpl", "foo.datasets" and "foo.labels".  Load the file "file_name.gpl" in gnuplot and it should
       give you the plot.

NOTES

       xpl2gpl is provided for convenience, as gnuplot is more commonly installed than the xplot package  that	tcptrace  typically  expects,  and
       because xplot has not always been available in Debian. If possible, you should consider installing the xplot-xplot.org package and using it
       instead of using xpl2gpl.

AUTHOR

       Avinash Lakhiani (no known email address)

       This manual page was written by Noah Meyerhans <noahm@debian.org> for the Debian project and may be used freely and without restriction	by
       others.

SEE ALSO

       tcptrace(1)

								    Aug 8, 2009 							XPL2GPL(1)