McIDAS User's Guide
Version 2010.1

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IGU

Grid file utility.


Formats

IGU DEL bgridf egridf
IGU SET gridf
IGU MAKE gridf maxgrd "text
IGU DIR gridf date project "text


Parameters

DEL

deletes a grid file

SET

sets the current grid file number

MAKE

generates a grid file

DIR

modifies a directory for a grid file

bgridf

beginning grid file number or local ADDE grid file specified as group/descriptor.position or alias.position

egridf

ending grid file number or local ADDE grid file specified as group/descriptor.position or alias.position

gridf

grid file number or local ADDE grid file specified as group/descriptor.position or alias.position

maxgrd

maximum number of grids in the grid file (default=159)

date

date the grid file was generated (default=current)

project

your project number (default=the project number specified at logon)

"text

identification text for your grid file; the double quote is mandatory


Remarks

There is no definitive limit to the number of grids that can be stored in a grid file. It is determined by the amount of disk space. The recommended limit is 1000.


Examples

IGU SET 2000

This entry points at grid file 2000. All subsequent grid operations are performed on file 2000 until you run another IGU SET command.

IGU DEL LOCAL/GRIDS.7 LOCAL/GRIDS.9

This entry deletes the grid files in positions 7 through 9 in the dataset LOCAL/GRIDS.


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