Thread: how to create chart

  1. #1
    Registered User
    Join Date
    Feb 2009
    India, Gujarat

    how to create chart

    hi All,
    I want to create .gif file of char from some stat, so i don't know how to make .gif file from C program and how to plot the graph. any one give me simple example of creating chart from C program.

  2. #2
    and the hat of int overfl Salem's Avatar
    Join Date
    Aug 2001
    The edge of the known universe
    Why GIF (archaic format)?
    Why not PNG (more tools, more libraries - libpng Home Page)

    You create a 'screen' consisting of a 2D array of pixels (aka bytes).
    You 'draw' into the 'screen' whatever you want.
    You then encode the result using say PNG to create a PNG file you can display in a browser, viewer etc.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

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