ArcGIS Pro 2.7 API Reference Guide
GetNoDataMask Method

ArcGIS.Core.Data.Raster Namespace > PixelBlock Class : GetNoDataMask Method
Index of a plane from this pixel block
Flag that indicates whether to get the NoData mask by reference (false) or value (true).
Gets the NoData mask for the given plane from this pixel block. This method must be called on the MCT. Use QueuedTask.Run.
Syntax
public Array GetNoDataMask( 
   int plane,
   bool makeCopy
)
Public Function GetNoDataMask( _
   ByVal plane As Integer, _
   ByVal makeCopy As Boolean _
) As Array

Parameters

plane
Index of a plane from this pixel block
makeCopy
Flag that indicates whether to get the NoData mask by reference (false) or value (true).

Return Value

An array representing the NoData mask for this plane.
Remarks
Conceptually, a NoData mask is a two-dimensional array in which each element corresponds to a pixel in the raster. Each element can have a value of 1 or 0; 1 indicates the pixel is a value pixel and 0 means the pixel is NoData. In order to save space, the NoData mask is actually stored as a one-dimensional array of byte. Each byte is used to represent NoData mask values for 8 correspondent pixels. If the image (or SafeArray) has an dimension of nxn, the length of the array returned from NoDataMask will be (n* n+7)/7
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

PixelBlock Class
PixelBlock Members