Appendix A. Transferring files between PC and host

GDDM V3R2 User's Guide

Appendix A. Transferring files between PC and host

GDDM V3R2 User's Guide
SC33-0875-01

Files created on your workstation can be copied to the host, converted on the host, and then used in a host application or utility. In a similar way, host data can be converted on the host and then copied to your workstation for use in a workstation application or utility. The conversion has to be done by the appropriate GDDM conversion utility, and it has to be done on the host.

Use the appropriate method for transferring data at your enterprise. This may be the SEND and RECEIVE terminal emulator commands that GDDM supports on CMS and TSO systems. These commands copy files between a host and your workstation. In some circumstances (especially on CMS), the SEND and RECEIVE commands also perform the necessary conversion. See the GDDM Base Application Programming Reference book for information about this.

GDDM does not support these functions on CICS or IMS systems. You may be able to transfer files on these systems, using some procedure you have on your workstation, but you cannot convert them.

The SEND command copies a file from your workstation to the host, and the RECEIVE command copies data from the host to your workstation. These commands make a copy of the file or data. They do not erase the original.

Note: If you need help to copy or convert files, see your system support personnel. There is information about the SEND and RECEIVE commands in the GDDM Base Application Programming Reference book. See "GDDM conversion utilities" in topic 1.2.5 for information about the GDDM conversion utilities.

You can transfer and convert the following:

Charts

Every chart consists of two files-one for the data and one for the format. Charts are created on the host as ADMCDATA and ADMCFORM objects respectively, using the GDDM ICU. Alternatively, they are created on the workstation as CHD and CHF files, using DisplayGraphics. If the data and format files are imported from the host to the workstation, they are known as ICD and ICF files.

Note: DisplayGraphics is an interactive, high-quality graphics editor that runs under DOS.

Pictures

Pictures are created and stored on the host as ADMGDF objects, and on the workstation as Picture Interchange Format (PIF) files or Computer Graphics Metafiles (CGM).

PIF files can be used by DisplayGraphics or the Graphics Work Station Program (GWSP). They can be converted further to OS/2 Metafiles for use by some OS/2 applications.
CGM is an internationally recognized standard (ISO 8632) for the interchange of picture files. It is used by a number of graphics programs, including Lotus Freelance Plus and Harvard Graphics, running on both IBM workstations and other manufacturers' equipment.

Non-graphics files

Examples include:

Text files.
Data Interchange Format (DIF) files. These are typically files from spreadsheet applications. You may want to transfer them to the host and display the information contained in them as charts, using the ICU. To find out how to get the file contents into the ICU, refer to the GDDM-PGF Interactive Chart Utility book.

PostScript print files

If your PostScript printer is attached to your workstation you can use the RECEIVE command to download PostScript files created using GDDM on the host computer. The PostScript file should be downloaded in binary format.

You may need to download these types of file:

PostScript documents. These are complete, formatted documents.
Encapsulated PostScript documents. These contain PostScript datastream (typically illustrations) that can be imbedded in PostScript documents or printed on their own.

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