Hurricane GIS Example
New Vector Map create a base map for the display.
Open database: open two databases.
|Storm tracks of major hurricanes, from a shape file available on the web.||Data base from the shape file, filtered for hurricane Andrew. Each storm has a position every few hours, so in this case there are 46 records for Andrew.|
|Table with hurricanes,
created in Excel with data from
tables on the NOAA website.
The database initially has no locations because the data on the web does not, but fields for LAT and LONG were created for a point data base with the hurricane's landfall. We will add the landfall locations in MICRODEM.
Note the edit check box on the top right of the form. You must check it to proceed. If the check box is not present, you must close the database, enable database edits, and then reopen the database.
|Track of hurricane Andrew, plotted after filtering the data base. (Use Force screen redraw on the map toolbar.)|
|You must have database edits enabled
for this to work. This option is off by default, to protect
unsophisticated users. If you get to this point and the option you want is
not available, you must close the database, correctly allows edits, and then
reopen the database.
Right clicking on the record for Andrew brings up this popup menu. The edit point location (graphical) highlights the current location (if it exits), and allows it to be dragged to a new location.
In this case, right clicking on edit point location (graphical) creates a new record in the center of the screen, and allows it to be dragged to the desired location.
We will move the location to the storm's landfall. We will then repeat for each storm--filtering the line data base, replotting the track, and then editing the landfall location.
Challenges with the example:
Hurricane and other weather/climate data
Last revision 8/5/2015