Name

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    PNG_START.PRO

Purpose

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    Prepare IDL to create a .png file using the z-buffer device.

Category

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    Graphics

Keywords

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    ENABLE_Z: setting this keyword enables the z-buffering
    capabilites of the 'z' device. This is not needed for two-D
    plots and is off by default.

Calling Sequence

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    PNG_START

Inputs

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    None.

Side Effects

---

    Changes the graphics device to "z".

Modification History

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  Written by: Edward C. Wiebe, 2002-01-29.
      Modifed: Edward C. Wiebe, 2002-03-28 (added the enable_z keyword)