2 Introduction to the Yohkoh Data and Software

• 2.1 YS, YDB, and YDn Directories
• 2.2 Yohkoh Software Organization
• 2.3 How to Contribute Software to the Yohkoh Tree
• 2.4 Yohkoh Data File Format
• 2.5 Yohkoh Data File Names
  • 2.5.1 Yohkoh Directory Logicals/Environment Variables
  • 2.5.2 Yohkoh Prefixes
  • 2.5.3 Yohkoh File IDs
  • 2.5.4 Yohkoh Week IDs
  • 2.5.5 Yohkoh Carrington IDs
• 2.6 Interactive Data Language (IDL)
  • 2.6.1 Some Comments about IDL
  • 2.6.2 Programs, Procedures, and Functions
  • 2.6.3 Running IDL programs