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<div style="background-color: #eef9ff; border: 1px solid #999; padding: 10px;">[[NXM_Help|↑ ''Go to the full list of NXM Help pages'']].</div>
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=== FILES - NeXtMidas file system support<span id="FILES"></span> ===

The NeXtMidas environment was designed to provide a natural interace to
any type of file on a system. The STATUS and DATALIST commands will
work with any file supported on the system. File names are case sensitive,
and should not have embedded white space.

The filename extension is used to determine the file group, where each
group is handled by a different subclass of the BaseFile class. The
file groups include Text, Image, Shape, Zip, Jar, and Midas Data files.

The underlying source of the data bytes is defined by the URL prefix.
Each URL prefix is handled by a different subclass of the IOResource class.
These include file:, http:, udp:, ram:, nfile:, stp:.

=== Auxes - How NeXtMidas finds files.<span id="Auxes"></span> ===

An AUX, or auxiliary, may be a directory or a URL.
A collection of AUXES, the "read AUX list" is searched when looking for a file.

Auxes may be short strings or numbers in string form.
Since X-Midas auxes must be numbers, many installations that use both
will use numbers on the NeXtMidas side for consistency.

Example aux table:

WRITE - Aux name where new files are to be written
READ - Comma seperated list of aux names to search

CWD - The current working directory
HOME - Home path, where user (%) macros are kept.
DAT - The SYS option tree DAT area.
RAM - RAM memory
1 - User path (i.e. /user/midas/+/)
9 - ICE RamDisk
99 - The X-Midas install ../xm/dat/ area
WEB - A WEB URL, configure this for your server

READ and WRITE are special reserved names that define the list of aux names
currently in use.

Examples:
TBD

=== Groups - Definition of Midas file groups.<span id="Groups"></span> ===

File groups in NextMidas consist of:
# Data files (1000, 2000, ...)
# Image Files (.GIF, .TIF,...)
# Text Files (.XML, .TXT,...)

=== Resources - Definition of file resources<span id="Resources"></span> ===

=== Types - Types of Midas Data files<span id="Types"></span> ===

There are a number of file types supported by NeXtMidas including:
Type 1000, 2000, 3000, 5000, ...

Type1000 - One dimensional data
Type2000 - Two dimensional data frames
Type3000 - Record Oriented data structures
Type4000 - Multiple Key=Value records
Type5000 - Record Oriented with reference frame information
Type6000 - Extended type3000 format

==== Type1000 - One dimensional data ====
This is typical for samples vs time data.
==== Type2000 - Two dimensional data frames ====
This is typical for samples vs time data.
==== Type3000 - Record Oriented data structures ====
This is typical for flat database files.
==== Type4000 - Multiple Key=Value records ====
This is typical for non-flat database files, or data with event keywords.
==== Type5000 - Record Oriented with reference frame information ====
This is typical for positions or orbit tracks to be plotted on maps.
==== Type6000 - Extended type3000 format ====
This is typical for flat database files.

=== TRIMMERS - Using trimmers to thin files in-line.<span id="TRIMMERS"></span> ===
{{:NXM_Help_TRIMMERS}}

</onlyinclude>
[[Category:NXM_Help]]

NXM Help FILES - Revision history

ConvertBot: Created page with "↑ ''Go to the full list of NXM Help pages''. === FILES - N..."

ConvertBot: Created page with "
↑ ''Go to the full list of NXM Help pages''.
=== FILES - N..."