A light-cone diagram in Gnuplot

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SUMMARY

This discussion focuses on generating a light-cone diagram using Gnuplot, specifically referencing a diagram found in a PDF document. The user has a data file containing redshift and right ascension values, which are essential for plotting. The solution involves utilizing Gnuplot's routines to create polar plots, which can represent sections of a circle, aligning with the desired output. The discussion emphasizes the importance of understanding Gnuplot's capabilities for visualizing astrophysical data.

PREREQUISITES
  • Familiarity with Gnuplot version 5.4 or later
  • Understanding of polar coordinates and their representation
  • Basic knowledge of astrophysical concepts such as redshift and right ascension
  • Ability to manipulate data files for plotting
NEXT STEPS
  • Explore Gnuplot's polar plot capabilities and syntax
  • Learn how to format data files for Gnuplot input
  • Investigate advanced Gnuplot routines for custom plotting
  • Study examples of light-cone diagrams in astrophysics literature
USEFUL FOR

Astronomers, astrophysicists, data analysts, and anyone interested in visualizing astrophysical data using Gnuplot.

sketos
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Hello,

If you visit this link (http://maia.ice.cat/cosmocomp/bcn_workshop/woodward.pdf ) you will see in page 3 a light-cone diagram!

How is it possible to generate it in GNUPLOT?

Note: i have a "data.file" with points and the columms are:
1) z (redshift)
2)Right ascension (RA)

Simillarly with the graph in the above link,
Thanks!
 
Last edited by a moderator:
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Basically, that is a polar plot. There are routines in gnuplot to draw a section of a circle.
 

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