I Routines
- IDLanROI
- IDLanROIGroup
- IDLff File Format Classes
- IDLgr Graphics Classes
- IDL_Object
- IDLdbDatabase
- IDLdbRecordset
- IDLitComponent
- IDLitComponent
- IDLitWindow
- IDLnetJPIP
- IDLnetOGCWCS
- IDLnetOGCWMS
- IDLnetURL
- IDL_Integer
- IDL_Number
- IDL_Pointer
- IDL_String
- IDL_Variable
- I18N_MULTIBYTETOUTF8
- I18N_MULTIBYTETOWIDECHAR
- I18N_UTF8TOMULTIBYTE
- I18N_WIDECHARTOMULTIBYTE
- IBETA
- ICONTOUR
- ICONVERTCOORD
- IDELETE
- IDENTITY
- IDLAsync Classes
- IDLDehydrate
- IDLEXBR_ASSISTANT
- IDLHydrate
- IDLITSYS_CREATETOOL
- IDLTaskJob
- IDLUNIT
- IDL_BASE64
- IDL_Container
- IDL_HASHVAR
- IDL_PRIMITIVE
- IDL_VALIDNAME
- IDLml Routines
- IELLIPSE
- IF...THEN...ELSE
- IGAMMA
- IGETCURRENT
- IGETDATA
- IGETID
- IGETPROPERTY
- IIMAGE
- IMAGE
- IMAGE_CONT Procedure
- IMAGE_STATISTICS
- IMAGE_THRESHOLD
- IMAGINARY
- IMAP
- IMSL Advanced Math and Statistics Routines
- INDGEN
- INT_2D
- INT_3D
- INT_TABULATED
- INTARR
- INTERPOL
- INTERPOLATE
- INTERVAL_VOLUME
- INVERT
- IOCTL
- IOPEN
- IPLOT
- IPM
- IPOLYGON
- IPOLYLINE
- IPUTDATA
- IREGISTER
- IRESET
- IRESOLVE
- IROTATE
- IR_FILTER
- ISA
- ISAVE
- ISCALE
- ISETCURRENT
- ISETPROPERTY
- ISHFT
- ISOCONTOUR
- ISOSURFACE
- ISURFACE
- ITEXT
- ITRANSLATE
- IVECTOR
- IVOLUME
- IZOOM