Skip Navigation Linkwww.nws.noaa.gov 
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Office of Hydrologic Development - header graphic
 

15. Deleting a Break Point

To delete a break point, select the Delete option from the Break Point menu or the minus symbol on the tool bar. The cursor will change into a skull and cross bones shape. Move the cursor over the break point on the input data plot to be deleted and click the mouse. If more than one break point is at the position then a break point will be deleted from the first station in the list and the break point total for the station will be decremented. To be sure about which break point gets deleted, hide all other stations from the plot and then do the delete.

Note: For MAT data, deleting a break point will remove the break point for that date on both minimum and maximum temperature plots.

The effect of deleting a break point between two segments that already have correction factors is that the segment before and after the break point are merged together and the correction factor for the new segment is the value of the before the deleted break point. For example:

Before deleting the break point j:

Segment IdStarting PointEnding PointCorrection Factor
1ijcf1
2jkcf2
3klcf3

After deleting the break point j:

Segment IdStarting PointEnding PointCorrection Factor
1ikcf1
3klcf3

Only one break point can be deleted at a time. To delete another break point, the user must select the Delete option again.

The order of doing add(s), delete(s) and/or move(s) will result in different correction factors for the same final segments if correction factors are not recalculated for all segments that are effected by the operations. See Appendix 2 for more details.


Previous                      Next

US Department of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Office of Hydrologic Development
1325 East West Highway
Silver Spring, MD 20910

Page Author: OHD webmaster
Page last modified: August 24, 2006
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities