Make Your Own Radio Image

2012-05-08
2013-02-10
  • Rolando Paz
    Rolando Paz
    2012-05-08

    Hello every one!!!

    Can you give me an idea of ​​ how to make a program that can read files and achieve assign a color to each value in gnuplot?

    I want to do something like this: http://www.nrao.edu/index.php/learn/radioastronomy/makeradioimage with my data file.

    My data file, example:

    1hour    2hour   3hour   4hour………………………. 24 hour
      3.10    2.33     1.55     3.22                               8.66
      4.40    4.55     1.22     4.66                               1.54
      4.60    6.21     4.12     6.30                               2.45
      5.70    2.55     1.22     0.55                               1.45
      6.60    0.22     1.20     3.32                               1.45
      8.60    0.25     4.65     4.55                               7.55
      2.60    4.62     1.24     4.65                               8.25

    And through gnuplot i want to make an image, assigning a color to each value.

    Regards

    Rolando Paz
    Guatemala

     
  • Ethan Merritt
    Ethan Merritt
    2012-05-08

    If you stick a comment marker (#) in front of that first line,
    you can plot your file using

    gnuplot> set view map
    gnuplot> splot 'radio.dat' matrix with image