Removal of Superfluous Doubled Lines in the FFMP Basin Map Files

Some sites have noticed that the FFMP small stream basin maps, when viewed with extreme magnification, may display doubled basin borderlines. This is an unintended artifact of the SCAN/FFMP localization process, and will not affect FFMP output. There is a series of command that the user can issue to remove the double lines, and create a cleaner Binary Cartographic Data (BCD) map file.

On any workstation, perform the following commands:

1. cd /data/fxa/nationalData

2. shp2bcd c xxxx_aggr_basins work1.bcd (where 'xxxx' is the 4-letter radar identifier)

3. bcdProc r work1.bcd work2.bcd

4. bcdProc t work2.bcd 0.2 xxxx_aggr_basins.bcd

5. rm work1.bcd work2.bcd

6. mv xxxx_aggr_basins.bcd /awips/fxa/data/localizationDataSets/YYY/  (where 'YYY' is the 3-letter site identifier)

The user should then view the map on the affected workstation, either by working down to the basin level through the FFMP Threat Table, or by calling up the basin map by itself via the "Maps-->FFMP Basins-->xxxx" sub-menu. Creating the new BCD file can take up to 30 minutes on an HP, so, once it is viewed and deemed satisfactory, it can be remote-copied to the other workstations to save time:

rcp xxxx_aggr_basins.bcd  ws?-yyyy:/awips/fxa/data/localizationDataSets/YYY/ (where ? is the workstation number, and yyyy is the 4-letter site identifier.)

Note that the BCD files on the HP workstations are slightly different from those on the Linux boxes, so the steps above will have to be performed independently on the HP and Linux workstations. Fortunately, the BCD creation process only takes a couple of minutes on Linux.