User`s guide

DiskLogger
Purpose Specify MATLAB AVI file object us ed to log data
Description The DiskLogger property specifies the AVI file object u sed to log data
when the
LoggingMode property is set to 'disk' or 'disk&memory '.
A M ATLAB AV I file obje ct specifies the name and other characte ristics
of an AVI file. For example, you can use AV I file object properties to
specify the codec used for data compression and the desired quality of
the output. For complete information about the AVI file object and its
properties, see the
avifile documentation.
Note Do not use the variable returned by the avifile function to
perform any operation on an AVI file object while it is being used by a
video input object for data logging. For example, do not change any
of the AVI file object properties, add frames, or close the object. Your
changes could conflict with the video input object.
When the video input object finishes logging data to disk, the AVI file
object remains open. The v ideo inpu t o bject d oe s n o t open or close an
AVI file obj ect used for logging. T h e video inpu t object, how ever, does
update the
Width, Height,andTotal Frames fields in the AV I file object
to reflect the current acquisition settings.
After
Logging and Running areoff,itispossiblethattheDiskLogger
might still be writing data to disk. When the DiskLogger finishes
writing data to disk, the value of the
DiskLoggerFrameCount property
should equ al the value of the
FramesAcquired property. Do not clos e or
modify the
DiskLogger until this condition is met.
Characteristics
Access Read only while running
Data type
AVI file object
Values The default value is [].
14-6