FieldInfo (arcpy)

Zusammenfassung

Provides field info methods and properties for layer and table views.

Syntax

FieldInfo ()

Eigenschaften

Eigenschaft	Erläuterung	Datentyp
count (Schreibgeschützt)	The field count.	Integer

Methodenübersicht

Methode	Erläuterung
addField (field_name, new_field_name, visible, split_rule)	Adds a field info entry
exportToString ()	Exports the object to its string representation.
findFieldByName (field_name)	Finds the field index by field name
findFieldByNewName (field_name)	Finds the field index by new field name.
getFieldName (index)	Gets the field name from the table by index position.
getNewName (index)	Gets the new field name from the table by index position.
getSplitRule (index)	Gets the split rule from the table by index position.
getVisible (index)	Gets the visible flag from the table by index position.
loadFromString (string)	Restore the object using its string representation. The exportToString method can be used to create a string representation.
removeField (index)	Removes the field info entry from a table.
setFieldName (index, field_name)	Sets the field name into the table.
setNewName (index, new_field_name)	Sets the new field name into the table.
setSplitRule (index, rule)	Sets the split rule into the table.
setVisible (index, visible)	Set the visible flag of a field on the table.

Methoden

addField (field_name, new_field_name, visible, split_rule)

Parameter	Erläuterung	Datentyp
field_name	The field name from the input feature class or table.	String
new_field_name	Sets the field name for the new layer or table view.	String
visible	Sets whether the field is visible or hidden. VISIBLE —Field is visible. HIDDEN —Field is hidden.	String
split_rule	Sets the behavior of an attribute's values when a feature is split. NONE —The attributes of the two resulting features take on a copy of the original value. RATIO —The attributes of resulting features are a ratio of the original feature's value. The ratio is based on the division of the original geometry. If the geometry is divided equally, each new feature's attribute gets one-half of the value of the original object's attribute.	String

exportToString ()

Rückgabewert

Datentyp	Erläuterung
String	The string representation of the object.

findFieldByName (field_name)

Parameter	Erläuterung	Datentyp
field_name	The field name used to find its index position	String

Rückgabewert

Datentyp	Erläuterung
Integer	The index position

findFieldByNewName (field_name)

Parameter	Erläuterung	Datentyp
field_name	The new field name used to find its index position.	String

Rückgabewert

Datentyp	Erläuterung
Integer	The index position.

getFieldName (index)

Parameter	Erläuterung	Datentyp
index	The index position.	Integer

Rückgabewert

Datentyp	Erläuterung
String	The field name.

getNewName (index)

Parameter	Erläuterung	Datentyp
index	The index position.	Integer

Rückgabewert

Datentyp	Erläuterung
String	The new field name.

getSplitRule (index)

Parameter	Erläuterung	Datentyp
index	The index position.	String

Rückgabewert

Datentyp	Erläuterung
String	The split rule. NONE —The attributes of the two resulting features take on a copy of the original value. RATIO —The attributes of resulting features are a ratio of the original feature's value. The ratio is based on the division of the original geometry. If the geometry is divided equally, each new feature's attribute gets one-half of the value of the original object's attribute.

getVisible (index)

Parameter	Erläuterung	Datentyp
index	The index position.	String

Rückgabewert

Datentyp	Erläuterung
String	The visible flag. VISIBLE —Field is visible. HIDDEN —Field is hidden.

loadFromString (string)

Parameter	Erläuterung	Datentyp
string	The string representation of the object.	String

removeField (index)

Parameter	Erläuterung	Datentyp
index	The index position of the field info object.	Integer

setFieldName (index, field_name)

Parameter	Erläuterung	Datentyp
index	The index position.	Integer
field_name	The field name to set into the table.	String

setNewName (index, new_field_name)

Parameter	Erläuterung	Datentyp
index	The index position.	None
new_field_name	The new field name to set into the table.	String

setSplitRule (index, rule)

Parameter	Erläuterung	Datentyp
index	The index position.	Integer
rule	The split rule to set into the table. NONE —The attributes of the two resulting features take on a copy of the original value. RATIO —The attributes of resulting features are a ratio of the original feature's value. The ratio is based on the division of the original geometry. If the geometry is divided equally, each new feature's attribute gets one-half of the value of the original object's attribute.	String

setVisible (index, visible)

Parameter	Erläuterung	Datentyp
index	The index position.	Integer
visible	The visible policy to set into the table. VISIBLE —Field is visible. HIDDEN —Field is hidden.	String

Codebeispiel

FieldInfo example

Display FieldInfo properties for a feature layer.

import arcpy

fc = "C:/Data/wells.shp"
layer = "temp_layer"
arcpy.MakeFeatureLayer_management(fc, layer)

# Create a describe object
#
desc = arcpy.Describe(layer)

# If a feature layer, continue
#
if desc.dataType == "FeatureLayer":

    # Create a fieldinfo object
    #
    fieldInfo = desc.fieldInfo
    
    index = 0

    # Use the count property to iterate through all the fields    
    #
    while index < fieldInfo.count:
        # Print fieldinfo properties to the screen
        #
        print "Field Name: " + fieldInfo.getFieldName(index)
        print "\tNew Name:   " + fieldInfo.getNewName(index)
        print "\tSplit Rule: " + fieldInfo.getSplitRule(index)
        print "\tVisible:    " + fieldInfo.getVisible(index)
        index += 1