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Full Discussion: Problem creating graph with gnuplot with time on x-axis
Top Forums Shell Programming and Scripting Problem creating graph with gnuplot with time on x-axis Post 302789911 by hakro807 on Thursday 4th of April 2013 12:09:02 PM
Old 04-04-2013
I just realised the code I posted was incomplete. Since the x axis is time gnuplot has to be told so.

So the final code looks like this:

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

This works without giving an error message, but all the values is located at the extreme ends of the graph.

Added
Code:
set xdata time

which helped. But now I need to make the x axis easily readable, maybe tics every 15 minutes.

Added
Code:
set xtics "14:00", 900, "16:00"

which help but it's still showing the time as hours:minutes:seconds, how to only show it as hours:minutes? And does it exist an easy way to replace (in my example) 14:00 and 16:00 with proper values, i.e. if it was measured from 09:05 to 10:04 the first tic (excluding the edges of the graph) would be at 09:15, the last at at 10:00? I guess it's similar to
Code:
 set xtics "%H:M", 900, "%H:%M"

or do I have to create a script that read the first and last value from the table with values and insert the correct time?
Last edited by hakro807; 04-04-2013 at 01:50 PM..
 

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LEARN ABOUT DEBIAN

locale::language

Locale::Language(3perl) 				 Perl Programmers Reference Guide				   Locale::Language(3perl)

NAME

       Locale::Language - standard codes for language identification

SYNOPSIS

	  use Locale::Language;

	  $lang = code2language('en');	      # $lang gets 'English'
	  $code = language2code('French');    # $code gets 'fr'

	  @codes   = all_language_codes();
	  @names   = all_language_names();

DESCRIPTION

       The "Locale::Language" module provides access to standard codes used for identifying languages, such as those as defined in ISO 639.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639 two-
       letter codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying languages. The ones currently supported are:

       alpha-2
	   This is the set of two-letter (lowercase) codes from ISO 639, such as 'he' for Hebrew.

	   This code set is identified with the symbol "LOCALE_LANG_ALPHA_2".

	   This is the default code set.

       alpha-3
	   This is the set of three-letter (lowercase) bibliographic codes from ISO 639, such as 'heb' for Hebrew.

	   This code set is identified with the symbol "LOCALE_LANG_ALPHA_3".

       term
	   This is the set of three-letter (lowercase) terminologic codes from ISO 639.

	   This code set is identified with the symbol "LOCALE_LANG_TERM".

ROUTINES

       code2language ( CODE [,CODESET] )
       language2code ( NAME [,CODESET] )
       language_code2code ( CODE ,CODESET ,CODESET2 )
       all_language_codes ( [CODESET] )
       all_language_names ( [CODESET] )
       Locale::Language::rename_language  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Language::add_language  ( CODE ,NAME [,CODESET] )
       Locale::Language::delete_language  ( CODE [,CODESET] )
       Locale::Language::add_language_alias  ( NAME ,NEW_NAME )
       Locale::Language::delete_language_alias	( NAME )
       Locale::Language::rename_language_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Language::add_language_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Language::delete_language_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes man page.

SEE ALSO

       Locale::Codes
       Locale::Constants
       http://www.loc.gov/standards/iso639-2/
	   Source of the ISO 639 codes.

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 1997-2001 Canon Research Centre Europe (CRE).
	  Copyright (c) 2001-2010 Neil Bowers
	  Copyright (c) 2010-2011 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2011-09-26						   Locale::Language(3perl)
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