Help for the ROI 1D Collapse Widget

The ROI image may be collapsed into a single row or column in one of
the following ways:

  row median    - A single row of data is calculated as the median of 
	          the data in each column.  The row is expanded into
	          a 2-D image by replication of each pixel in the row
	          to a full column.  If Fill Y-Axis is set to Yes, the
		  column is filled to the y-size of the reference image.

  row mean      - A single row of data is calculated as the mean of
	          the data in each column.  The row is expanded into
	          a 2-D image by replication of each pixel in the row
	          to a full column.  If Fill Y-Axis is set to Yes, the
		  column is filled to the y-size of the reference image.

  column median - A single column of data is calculated as the median
		  of the data in each row.  The column is expanded into
		  a 2-D image by replication of each pixel in the column
		  to a full row.  If Fill X-Axis is set to Yes, the row
		  is filled to the x-size of the reference image.

  column mean   - A single column of data is calculated as the mean
		  of the data in each row.  The column is expanded
		  into a 2-D image by replication of each pixel in
		  the column to a full row.  If Fill X-Axis is set 
		  to Yes, the row is filled to the x-size of the
		  reference image.

The resultant image may be saved to disk in FITS format and/or to IDP3
memory.  The name (and path if to disk) of the output file must be
provided.  The user may Browse to select the appropriate path for
the file.  The Compute-Save button computes the image and saves the
data as specified by the user.  The Done button closes the widget.