SAS Component Language: Reference

File Types

The file types that are supported by the IMGOP function and by the Image Data Model class are described in Supported Image File Types. The file type of the image determines which attributes can be used in reading or writing the image. The attributes that you can specify for each file type are described in the following topics:

Attributes for Reading Image Files

Attributes for Writing Image Files

Attributes for Reading Images from Kodak DC40 Cameras

Attributes for Reading Images from HP ScanJet and TWAIN Scanners

Attributes for Reading Images from TWAIN Scanners and Cameras

Supported Image File Types
File Type Description

BMP (Microsoft Windows Device Independent Bitmap) Supports color-mapped and true color images that are stored as uncompressed or run-length encoded data. BMP was developed by Microsoft Corporation.

CAT (SAS Catalog IMAGE entry)

DIB (Microsoft Windows Device Independent Bitmap) See the description of BMP. DIB is supported only under the Windows 95, Windows 98, Windows NT, and OS/2 operating systems.

EMF (Microsoft NT Enhanced Metafile) Supported only under Windows 95, Windows 98, and Windows NT.

EPSI (Encapsulated PostScript Interchange) An extended version of the standard PostScript (PS) format. Files that use this format can be printed on PostScript printers and can also be imported into other applications. Notice that EPSI files can be read, but PS files cannot be.

GIF (Graphics Interchange Format) Supports only color-mapped images. GIF is owned by CompuServe, Inc. (available if licensed).

JFIF (JPEG File Interchange Format) Supports JPEG image compression. JFIF software is developed by the Independent JPEG Group.

MET (OS/2 Metafile) Supported only under OS/2.

PBM (Portable Bitmap Utilities) Supports gray, color, RGB, and bitmap files. The Portable Bitmap Utilities are a set of free utility programs that were developed primarily by Jef Poskanzer.

PCD (Photo CD reader) Photo CD is owned by and licensed from Eastman Kodak Company.

PCX (PC Paintbrush) Supports bitmapped, color-mapped, and true color images. PCX and PC Paintbrush are owned by Zsoft Corporation.

PICT (The QuickDraw Picture Format) Supports 256-color images and bitmaps. The QuickDraw Picture Format is owned by Apple Computer, Inc. and is supported only in the Macintosh environment.

PNG (Portable Networks Graphics) The PNG Reader and Writer use `libpng' in their implementations. Permission to use is freely granted. Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.

PS (PostScript Image File Format) The Image classes use only PostScript image operators. A level II PS printer is required for color images. PostScript was developed by Adobe Systems, Inc.

TGA (Targa) Supports both true color images and color-mapped images; however, the current release of the Image classes supports only true color TGA files. Targa is owned by Truevision, Inc.

TIFF (Tagged Image File Format) Internally supports a number of compression types and image types, including bitmapped, color-mapped, gray-scaled, and true color. TIFF was developed by Aldus Corporation and Microsoft Corporation and is used by a wide variety of applications. (available if licensed)

WMF (Microsoft Windows Metafile) Supported only under MicroSoft Windows operating systems.

XBM (X Window Bitmaps) Supports bitmapped images only. XBM is owned by MIT X Consortium.

XPM (X Window Pixmap) Is an extended version of XBM that supports color bitmaps; supported only under UNIX operating systems.

XWD (X Window Dump) Supports all X visual types (bitmapped, color-mapped, and true color). XWD is owned by MIT X Consortium.

***Supported Image File Types***
File Type	Description
BMP (Microsoft Windows Device Independent Bitmap)	Supports color-mapped and true color images that are stored as uncompressed or run-length encoded data. BMP was developed by Microsoft Corporation.
CAT (SAS Catalog IMAGE entry)
DIB (Microsoft Windows Device Independent Bitmap)	See the description of BMP. DIB is supported only under the Windows 95, Windows 98, Windows NT, and OS/2 operating systems.
EMF (Microsoft NT Enhanced Metafile)	Supported only under Windows 95, Windows 98, and Windows NT.
EPSI (Encapsulated PostScript Interchange)	An extended version of the standard PostScript (PS) format. Files that use this format can be printed on PostScript printers and can also be imported into other applications. Notice that EPSI files can be read, but PS files cannot be.
GIF (Graphics Interchange Format)	Supports only color-mapped images. GIF is owned by CompuServe, Inc. (available if licensed).
JFIF (JPEG File Interchange Format)	Supports JPEG image compression. JFIF software is developed by the Independent JPEG Group.
MET (OS/2 Metafile)	Supported only under OS/2.
PBM (Portable Bitmap Utilities)	Supports gray, color, RGB, and bitmap files. The Portable Bitmap Utilities are a set of free utility programs that were developed primarily by Jef Poskanzer.
PCD (Photo CD reader)	Photo CD is owned by and licensed from Eastman Kodak Company.
PCX (PC Paintbrush)	Supports bitmapped, color-mapped, and true color images. PCX and PC Paintbrush are owned by Zsoft Corporation.
PICT (The QuickDraw Picture Format)	Supports 256-color images and bitmaps. The QuickDraw Picture Format is owned by Apple Computer, Inc. and is supported only in the Macintosh environment.
PNG (Portable Networks Graphics)	The PNG Reader and Writer use `libpng' in their implementations. Permission to use is freely granted. Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
PS (PostScript Image File Format)	The Image classes use only PostScript image operators. A level II PS printer is required for color images. PostScript was developed by Adobe Systems, Inc.
TGA (Targa)	Supports both true color images and color-mapped images; however, the current release of the Image classes supports only true color TGA files. Targa is owned by Truevision, Inc.
TIFF (Tagged Image File Format)	Internally supports a number of compression types and image types, including bitmapped, color-mapped, gray-scaled, and true color. TIFF was developed by Aldus Corporation and Microsoft Corporation and is used by a wide variety of applications. (available if licensed)
WMF (Microsoft Windows Metafile)	Supported only under MicroSoft Windows operating systems.
XBM (X Window Bitmaps)	Supports bitmapped images only. XBM is owned by MIT X Consortium.
XPM (X Window Pixmap)	Is an extended version of XBM that supports color bitmaps; supported only under UNIX operating systems.
XWD (X Window Dump)	Supports all X visual types (bitmapped, color-mapped, and true color). XWD is owned by MIT X Consortium.

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	Attributes for Reading Image Files
	Attributes for Writing Image Files
	Attributes for Reading Images from Kodak DC40 Cameras
	Attributes for Reading Images from HP ScanJet and TWAIN Scanners
	Attributes for Reading Images from TWAIN Scanners and Cameras