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ListRasters

Résumé

The ListRasters function returns a list of the rasters in the current workspace.

Discussion

The workspace environment must be set before using several of the list functions, including ListDatasets, ListFeatureClasses, ListFiles, ListRasters, ListTables, and ListWorkspaces.

Syntaxe

ListRasters({wild_card}, {raster_type})

Le paramètre Explication Type de données

wild_card

Limits the results returned. If a value is not specified, all values are returned. The wildcard is not case sensitive.

Use an asterisk (*) to represent zero or more characters. For example, Te* finds Tennessee and Texas.

String

raster_type

Specifies the raster type that will be used to limit the results. The following are valid raster types:

  • BMP—Bitmap graphic raster dataset format will be used.

  • GIF—Graphic Interchange Format for raster datasets will be used.

  • IMG—ERDAS IMAGINE raster data format will be used.

  • JP2—JPEG 2000 raster dataset format will be used.

  • JPG—Joint Photographics Experts Group raster dataset format will be used.

  • PNG—Portable Network Graphics raster dataset format will be used.

  • TIF—Tagged Image File for raster datasets will be used.

  • GRID—Grid data format will be used.

  • All—All supported raster types will be used. This is the default.

String

Valeur de retour

Type de données Explication

String

The list returned from the function containing raster names in the workspace, optionally limited by the wild_card and raster_type arguments.

Exemple de code

ListRasters example

List Grid raster names in the workspace.

import arcpy

# Set the current workspace
arcpy.env.workspace = "c:/data/DEMS"

# Get and print a list of GRIDs from the workspace
rasters = arcpy.ListRasters("*", "GRID")
for raster in rasters:
    print(raster)