栅格波段属性

摘要

Describe 函数可返回栅格波段的以下属性。同时还支持表属性数据集属性

栅格波段可返回“RasterBand”dataType

属性

属性说明数据类型
height
(只读)

The number of rows

Integer
isInteger
(只读)

Indicates whether the raster band has integer type

Boolean
meanCellHeight
(只读)

The cell size in y direction

Double
meanCellWidth
(只读)

The cell size in x direction

Double
noDataValue
(只读)

The NoData value of the raster band

String
pixelType
(只读)

The pixel type

  • U11 bit
  • U22 bits
  • U44 bits
  • U8Unsigned 8 bit integers
  • S88 bit integers
  • U16Unsigned 16 bit integers
  • S1616 bit integers
  • U32Unsigned 32 bit integers
  • S3232 bit integers
  • F32Single precision floating point
  • F64Double precision floating point
String
primaryField
(只读)

The index of the field

Integer
tableType
(只读)

The class names of the table

  • ValueValues in the table are used for values only, not for indexing.
  • IndexValues in the table are used as indexes in the raster table.
  • InvalidValues are invalid.
String
width
(只读)

The number of columns

Integer

代码示例

Raster Band properties example (stand-alone script)

The following stand-alone script displays some properties for a raster band.

import arcpy

# Create a Describe object from the raster band
#
desc = arcpy.Describe("C:/data/preston.img/Band_1")

# Print some raster band properties
#
print "Height: %d" % desc.height
print "Width:  %d" % desc.width
print "Integer Raster: %s" % desc.isInteger



7/10/2012