Input/Output

• CDF
• EOS
• General File Access
• General Input/Output
• GRIB
• HDF
• HDF5
• Image Data Formats
• NetCDF
• Network
• Other Data Formats
• Video Data Formats

General Language

• Array Creation
• Array Manipulation
• Asynchronous Jobs
• Date and Time
• Error Handling
• Executive Commands
• External Linking
• Help
• Java-IDL Bridge
• ESE API
• Language Catalogs
• Object-Oriented Programming
• Operating System Access
• Programming and Control
• Statements
• String Processing
• Type Conversion
• Variable Scope

Math/Statistics

• Complex Numbers
• Curve and Surface Fitting
• Differentiation and Integration
• Eigenvalues and Eigenvectors
• Error Assessment
• Gridding and Interpolation
• Hypothesis Testing
• Image Processing
• LAPACK
• Linear Systems
• Miscellaneous
• Multivariate Analysis
• Nonlinear Equations
• Optimization
• Probability
• Signal Processing
• Sparse Arrays
• Special Functions
• Statistical Tools
• Transcendental
• Wavelets
• Advanced Math and Stats