ArcMap

ArcInfo Workstation Item properties

Resumen

The Describe function returns the following properties for ArcInfo WorkstationINFO Table Items. ArcInfo Workstation Items are accessed from the itemSet property of ArcInfo Workstation INFO Table Properties.

An ArcInfo Workstation Item returns a dataType of "ArcInfoItem".

Propiedades

PropiedadExplicaciónTipo de datos
alternateName
(Sólo lectura)

The alternate name is another name you can use to refer to the item. It sometimes contains abbreviated names for items that otherwise have long descriptive names. Long item names often help for documentation purposes. Shorter names may be convenient for ad hoc usage.

String
isIndexed
(Sólo lectura)

True if the item is indexed. Indexed items speed up selection operations on large INFO files.

Boolean
isPseudo
(Sólo lectura)

True if the item is a pseudo item.

Boolean
isRedefined
(Sólo lectura)

True if it is a redefined item. Redefined items can be subsets of regular items or can span multiple regular items.

Boolean
itemType
(Sólo lectura)

The data type of the item. One of Binary, Character, Date, Floating, Integer, Number, and OID.

String
numberDecimals
(Sólo lectura)

The number of digits to the right of the decimal place. This is only for item types that hold decimal numbers.

Integer
outputWidth
(Sólo lectura)

The number of spaces used to display the item's values.

Integer
startPosition
(Sólo lectura)

The starting position of a redefined item.

Integer
width
(Sólo lectura)

The number of spaces (or bytes) used to store the item's values.

Integer

Muestra de código

ArcInfo Workstation Item properties example (stand-alone script)

The following stand-alone script displays properties from all the ArcInfo Workstation Items in an ArcInfo Workstation Table. 

import arcpy

# Create a list of Describe objects from the ArcInfo Table.
#
descList = arcpy.Describe("C:/data/crimefreq").itemSet

# Print properties about each item in the itemSet
#
for item in descList:
    print item.name
    print "%-22s %s" % ("  Alternate name:", item.alternateName)
    print "%-22s %s" % ("  Is indexed:", item.isIndexed)
    print "%-22s %s" % ("  Is pseudo:", item.isPseudo)
    print "%-22s %s" % ("  Is redefined:", item.isRedefined)
    print "%-22s %s" % ("  Item type:", item.itemType)
    print "%-22s %s" % ("  Number of decimals:", item.numberDecimals)
    print "%-22s %s" % ("  Output width:", item.outputWidth)
    print "%-22s %s" % ("  Start position:", item.startPosition)
    print "%-22s %s" % ("  Width:", item.width)