MDU

MD file utility.

Formats

MDU COPY sfile dfile
MDU DEL bfile efile
MDU DIR file id "comments
MDU LIST bfile efile [keyword]
MDU MAKE file schema version nrows ncols id "comments
MDU SET file

Parameters

COPY	copies the contents of the MD file
DEL	deletes an MD file
DIR	changes a file identification number and comments
LIST	lists the file directory headers
MAKE	makes a new MD file
SET	sets the current MD file number
sfile	source MD file number
dfile	destination MD file number
bfile	beginning MD file number
efile	ending MD file number (default=bfile)
file	MD file number
id	identification number, YYDDD (default=0 if used with the MAKE option; default=current ID if used with the DIR option)
"comments	comments added to the file; the double quote is mandatory
schema	MD file schema name, for example, IRAB, ISFC
version	schema version number; use X for schema defaults
nrows	number of rows; use X for schema defaults
ncols	number of columns; use X for schema defaults

Keyword

DAY=

Julian day to list, YYDDD

Remarks

Before using the MAKE option, be sure the schema type is registered on your workstation. See commands LSCHE and SCHE for more information. Also see Registering MD File Schemas.

You can use the ADDE command PTLIST in place of MDU LIST,
and the ADDE command PTCOPY in place of MDU COPY.

Examples

MDU COPY 1 10

This entry copies MD file 1 into MD file 10.

MDU DEL 2 6

This entry deletes MD files 2 through 6.

MDU DIR 1 97290 "SHIP AND BUOY DATA

This entry changes the directory of MD file 1 so the ID is 97290 and the comment is SHIP AND BUOY DATA.

MDU LIST 1 40

This entry lists the MD file directory headers from MD files 1 to 40.

MDU MAKE 1 ISHP 3 X X 97300 "SHIP DATA

This entry creates MD file 1 of schema ISHP, version 3. It uses row and column defaults. The ID is 97300, labeled SHIP DATA.

MDU SET 5

This entry sets the current MD file number to 5. All subsequent MD file commands are performed on MD file 5.