Esri International User Conference 2001 Paper # 397 Minnesota Department of Natural Resources LandView -- Map Objects Application Development -- July, 2001

LandView is able to connect to a GPS unit to provide on-the-fly mapping.  To do this:

• Attach a GPS unit to the computer

 
• Go to Preferences => GPS => ON (or press CTRL+G) - LandView will then attempt to communicate with the GPS unit. Notice you have several options in the dialogue box that pops up.

 

 
 






You can set:

• The port the GPS unit is installed on (the default is COM1 which is usually the case)
• The baud rate
• The unit to go to your current location or a saved waypoint.
• If you choose real time it will go to your current location.
• If you choose waypoint you can use the goto option on the GPS to pick a saved waypoint from the GPS unit that you have previously stored and LandView will move the red dot to that location.

If the user is in motion the red dot in your LandView Display Window will move accordingly (such as when driving a car or boat). Under the GPS preference there is the option to change the distance in miles traveled before LandView refreshes the screen. Increasing this number will lessen the number of times LandView refreshes the screen.

You can also change the refresh rate in the dialogue box that pops up when you tell the program to turn the GPS on. To change the refresh rate in this box simply click in the text box where it shows the current refresh rate ("Update Interval in Miles") and enter a new number.

Below the refresh rate text box, there is a button you can press to quickly set the refresh rate to 0.01 miles, which is the minimum refresh rate available.

There is also the option to manually refresh the screen at any time (for example if the car is no longer moving). Do this by pressing the refresh button at the bottom.