[ITK-users] ImageFileReader Update()

[Abdul Abdul]

Hello,

I'm new to ITK, and just want to ask about what "Update()" means when used
with ImageFileReader.

For instance:

 typedef itk::ImageFileReader<ImageType> ReaderType;
 ReaderType::Pointer imageReader = ReaderType::New();
 imageReader->SetFileName( argv[1] );
* imageReader->Update();*

Thanks.
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