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C H A P T E R 1 0
Recognition: Advanced Topics
Using Advanced Topics in Recognition
10-23
Avoid including inappropriate items in the
recToggle
popup, such as an ink text
item for a view that does not support ink text. It is your responsibility to ensure that
the
_recogPopup
array includes only symbols representing valid choices for the
view that the
recToggle
configures.
Accessing Correction Information
10
As words are recognized, the system saves correction information that includes
the stroke bundle. (See "Unrecognized Strokes" on page 9-7.)
alternate interpretations returned by the recognizer. (See "Classifying Strokes"
on page 9-3.)
learning data. (See "Correction and Learning" on page 9-13.)
You can call the
GetCorrectInfo
global function at any time to obtain
correction information for recently-recognized words. This function returns a
correctInfo
frame based on the
protoCorrectInfo
system prototype.
The
info
slot in the
correctInfo
frame holds an array of
wordInfo
frames
based on the
protoWordInfo
system prototype. Each
wordInfo
frame
represents a single written word.
The
max
slot in the
correctInfo
frame specifies the maximum number of words
for which it holds correction information. When adding a new element to the
info
array will cause this array to exceed the size specified by the
max
slot, the system
removes the first element of the
info
array, uses its learning data if necessary, and
adds the new
wordInfo
frame to the
info
array.
The
correctInfo
frame provides a number of methods that you can use to
manipulate its contents; for more information, see "CorrectInfo Functions and
Methods" (page 8-54) in Newton Programmer's Reference.
Each
wordInfo
frame specifies the following information:
the view that contains the word.
the position of the word within the
clParagraphView
view that displays it.
the list of alternate interpretations of the input strokes.
an identifier specifying the recognizer that interpreted the input.
a stroke bundle (optional).
learning data (optional).
As an alternative to obtaining
wordInfo
frames from the
correctInfo
frame,
you can extract these frames from the word unit passed to an optional
ViewWordScript
method that your view provides. For a description of this
method, see "Application-Defined Recognition Methods" (page 8-66) in Newton
Programmer's Reference
.
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