Usage

vtkImageReader2 is the parent class for vtkImageReader. It
is a good super class for streaming readers that do not
require a mask or transform on the data. vtkImageReader was
implemented before vtkImageReader2, vtkImageReader2 is
intended to have a simpler interface.
To create an instance of class vtkImageReader2, simply
invoke its constructor as follows

    obj = vtkImageReader2



 Methods

The class vtkImageReader2 has several methods that can be
used. They are listed below. Note that the documentation is
translated automatically from the VTK sources, and may not
be completely intelligible. When in doubt, consult the VTK
website. In the methods listed below, obj is an instance of
the vtkImageReader2 class.

* string = obj.GetClassName ()
* int = obj.IsA (string name)
* vtkImageReader2 = obj.NewInstance ()
* vtkImageReader2 = obj.SafeDownCast (vtkObject o)
* obj.SetFileName (string ) - Specify file name for the
  image file. If the data is stored in multiple files, then
  use SetFileNames or SetFilePrefix instead.
* string = obj.GetFileName () - Specify file name for the
  image file. If the data is stored in multiple files, then
  use SetFileNames or SetFilePrefix instead.
* obj.SetFileNames (vtkStringArray ) - Specify a list of
  file names. Each file must be a single slice, and each
  slice must be of the same size. The files must be in the
  correct order. Use SetFileName when reading a volume
  (multiple slice), since DataExtent will be modified after
  a SetFileNames call.
* vtkStringArray = obj.GetFileNames () - Specify a list of
  file names. Each file must be a single slice, and each
  slice must be of the same size. The files must be in the
  correct order. Use SetFileName when reading a volume
  (multiple slice), since DataExtent will be modified after
  a SetFileNames call.
* obj.SetFilePrefix (string ) - Specify file prefix for the
  image file or files. This can be used in place of
  SetFileName or SetFileNames if the filenames follow a
  specific naming pattern, but you must explicitly set the
  DataExtent so that the reader will know what range of
  slices to load.
* string = obj.GetFilePrefix () - Specify file prefix for
  the image file or files. This can be used in place of
  SetFileName or SetFileNames if the filenames follow a
  specific naming pattern, but you must explicitly set the
  DataExtent so that the reader will know what range of
  slices to load.
* obj.SetFilePattern (string ) - The sprintf-style format
  string used to build filename from FilePrefix and slice
  number.
* string = obj.GetFilePattern () - The sprintf-style format
  string used to build filename from FilePrefix and slice
  number.
* obj.SetDataScalarType (int type) - Set the data type of
  pixels in the file. If you want the output scalar type to
  have a different value, set it after this method is
  called.
* obj.SetDataScalarTypeToFloat () - Set the data type of
  pixels in the file. If you want the output scalar type to
  have a different value, set it after this method is
  called.
* obj.SetDataScalarTypeToDouble () - Set the data type of
  pixels in the file. If you want the output scalar type to
  have a different value, set it after this method is
  called.
* obj.SetDataScalarTypeToInt () - Set the data type of
  pixels in the file. If you want the output scalar type to
  have a different value, set it after this method is
  called.
* obj.SetDataScalarTypeToUnsignedInt () - Set the data type
  of pixels in the file. If you want the output scalar type
  to have a different value, set it after this method is
  called.
* obj.SetDataScalarTypeToShort () - Set the data type of
  pixels in the file. If you want the output scalar type to
  have a different value, set it after this method is
  called.
* obj.SetDataScalarTypeToUnsignedShort () - Set the data
  type of pixels in the file. If you want the output scalar
  type to have a different value, set it after this method
  is called.
* obj.SetDataScalarTypeToChar () - Set the data type of
  pixels in the file. If you want the output scalar type to
  have a different value, set it after this method is
  called.
* obj.SetDataScalarTypeToSignedChar () - Set the data type
  of pixels in the file. If you want the output scalar type
  to have a different value, set it after this method is
  called.
* obj.SetDataScalarTypeToUnsignedChar () - Get the file
  format. Pixels are this type in the file.
* int = obj.GetDataScalarType () - Get the file format.
  Pixels are this type in the file.
* obj.SetNumberOfScalarComponents (int ) - Set/Get the
  number of scalar components
* int = obj.GetNumberOfScalarComponents () - Set/Get the
  number of scalar components
* obj.SetDataExtent (int , int , int , int , int , int ) -
  Get/Set the extent of the data on disk.
* obj.SetDataExtent (int a[6]) - Get/Set the extent of the
  data on disk.
* int = obj. GetDataExtent () - Get/Set the extent of the
  data on disk.
* obj.SetFileDimensionality (int ) - The number of
  dimensions stored in a file. This defaults to two.
* int = obj.GetFileDimensionality () - Set/Get the spacing
  of the data in the file.
* obj.SetDataSpacing (double , double , double ) - Set/Get
  the spacing of the data in the file.
* obj.SetDataSpacing (double a[3]) - Set/Get the spacing of
  the data in the file.
* double = obj. GetDataSpacing () - Set/Get the spacing of
  the data in the file.
* obj.SetDataOrigin (double , double , double ) - Set/Get
  the origin of the data (location of first pixel in the
  file).
* obj.SetDataOrigin (double a[3]) - Set/Get the origin of
  the data (location of first pixel in the file).
* double = obj. GetDataOrigin () - Set/Get the origin of the
  data (location of first pixel in the file).
* long = obj.GetHeaderSize () - Get the size of the header
  computed by this object.
* long = obj.GetHeaderSize (long slice) - Get the size of
  the header computed by this object.
* obj.SetHeaderSize (long size) - If there is a tail on the
  file, you want to explicitly set the header size.
* obj.SetDataByteOrderToBigEndian () - These methods should
  be used instead of the SwapBytes methods. They indicate
  the byte ordering of the file you are trying to read in.
  These methods will then either swap or not swap the bytes
  depending on the byte ordering of the machine it is being
  run on. For example, reading in a BigEndian file on a
  BigEndian machine will result in no swapping. Trying to
  read the same file on a LittleEndian machine will result
  in swapping. As a quick note most UNIX machines are
  BigEndian while PC's and VAX tend to be LittleEndian. So
  if the file you are reading in was generated on a VAX or
  PC, SetDataByteOrderToLittleEndian otherwise
  SetDataByteOrderToBigEndian.
* obj.SetDataByteOrderToLittleEndian () - These methods
  should be used instead of the SwapBytes methods. They
  indicate the byte ordering of the file you are trying to
  read in. These methods will then either swap or not swap
  the bytes depending on the byte ordering of the machine it
  is being run on. For example, reading in a BigEndian file
  on a BigEndian machine will result in no swapping. Trying
  to read the same file on a LittleEndian machine will
  result in swapping. As a quick note most UNIX machines are
  BigEndian while PC's and VAX tend to be LittleEndian. So
  if the file you are reading in was generated on a VAX or
  PC, SetDataByteOrderToLittleEndian otherwise
  SetDataByteOrderToBigEndian.
* int = obj.GetDataByteOrder () - These methods should be
  used instead of the SwapBytes methods. They indicate the
  byte ordering of the file you are trying to read in. These
  methods will then either swap or not swap the bytes
  depending on the byte ordering of the machine it is being
  run on. For example, reading in a BigEndian file on a
  BigEndian machine will result in no swapping. Trying to
  read the same file on a LittleEndian machine will result
  in swapping. As a quick note most UNIX machines are
  BigEndian while PC's and VAX tend to be LittleEndian. So
  if the file you are reading in was generated on a VAX or
  PC, SetDataByteOrderToLittleEndian otherwise
  SetDataByteOrderToBigEndian.
* obj.SetDataByteOrder (int ) - These methods should be used
  instead of the SwapBytes methods. They indicate the byte
  ordering of the file you are trying to read in. These
  methods will then either swap or not swap the bytes
  depending on the byte ordering of the machine it is being
  run on. For example, reading in a BigEndian file on a
  BigEndian machine will result in no swapping. Trying to
  read the same file on a LittleEndian machine will result
  in swapping. As a quick note most UNIX machines are
  BigEndian while PC's and VAX tend to be LittleEndian. So
  if the file you are reading in was generated on a VAX or
  PC, SetDataByteOrderToLittleEndian otherwise
  SetDataByteOrderToBigEndian.
* string = obj.GetDataByteOrderAsString () - These methods
  should be used instead of the SwapBytes methods. They
  indicate the byte ordering of the file you are trying to
  read in. These methods will then either swap or not swap
  the bytes depending on the byte ordering of the machine it
  is being run on. For example, reading in a BigEndian file
  on a BigEndian machine will result in no swapping. Trying
  to read the same file on a LittleEndian machine will
  result in swapping. As a quick note most UNIX machines are
  BigEndian while PC's and VAX tend to be LittleEndian. So
  if the file you are reading in was generated on a VAX or
  PC, SetDataByteOrderToLittleEndian otherwise
  SetDataByteOrderToBigEndian.
* obj.SetFileNameSliceOffset (int ) - When reading files
  which start at an unusual index, this can be added to the
  slice number when generating the file name (default = 0)
* int = obj.GetFileNameSliceOffset () - When reading files
  which start at an unusual index, this can be added to the
  slice number when generating the file name (default = 0)
* obj.SetFileNameSliceSpacing (int ) - When reading files
  which have regular, but non contiguous slices (eg
  filename.1,filename.3,filename.5) a spacing can be
  specified to skip missing files (default = 1)
* int = obj.GetFileNameSliceSpacing () - When reading files
  which have regular, but non contiguous slices (eg
  filename.1,filename.3,filename.5) a spacing can be
  specified to skip missing files (default = 1)
* obj.SetSwapBytes (int ) - Set/Get the byte swapping to
  explicitly swap the bytes of a file.
* int = obj.GetSwapBytes () - Set/Get the byte swapping to
  explicitly swap the bytes of a file.
* obj.SwapBytesOn () - Set/Get the byte swapping to
  explicitly swap the bytes of a file.
* obj.SwapBytesOff () - Set/Get the byte swapping to
  explicitly swap the bytes of a file.
* int = obj.OpenFile ()
* obj.SeekFile (int i, int j, int k)
* obj.FileLowerLeftOn () - Set/Get whether the data comes
  from the file starting in the lower left corner or upper
  left corner.
* obj.FileLowerLeftOff () - Set/Get whether the data comes
  from the file starting in the lower left corner or upper
  left corner.
* int = obj.GetFileLowerLeft () - Set/Get whether the data
  comes from the file starting in the lower left corner or
  upper left corner.
* obj.SetFileLowerLeft (int ) - Set/Get whether the data
  comes from the file starting in the lower left corner or
  upper left corner.
* obj.ComputeInternalFileName (int slice) - Set/Get the
  internal file name
* string = obj.GetInternalFileName () - Set/Get the internal
  file name
* int = obj.CanReadFile (string ) - Get the file extensions
  for this format. Returns a string with a space separated
  list of extensions in the format .extension
* string = obj.GetFileExtensions () - Return a descriptive
  name for the file format that might be useful in a GUI.
* string = obj.GetDescriptiveName () - Return a descriptive
  name for the file format that might be useful in a GUI.


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