I tried it in a helicopter about 18 months ago and found a similar problem
although from memory, I thought the lag was even greater.
I know that the update interval was not the problem, I checked that out
fairly early in the piece (helicopter hovering while I tap madly on the
laptop.
I assumed that the small Magellan GPS3000 I was using was not suited to
higher-speed travel.
I was using a 1995 vintage laptop and I wonder if the problem was in the
older serial port. Or perhaps they just dont like working upside down here
in the South Pacific
Regards
Russ Mincher
CEO
Challenger Scallop Enhancement Co Ltd
----- Original Message -----
From: "Thomas Colley" <[EMAIL PROTECTED]>
To: "MapInfo-L List Input (E-mail)" <[EMAIL PROTECTED]>
Cc: "Michael Gronlund" <[EMAIL PROTECTED]>; "Jaemes Driver"
<[EMAIL PROTECTED]>
Sent: Friday, July 13, 2001 6:21 PM
Subject: MI-L Geographic Tracker Time Lag
> I have started using the "Geographic Tracker" tool written by Blue Marble
> for using GPS in conjunction with MapInfo V5.0. I am using this to plot
> points in car-based recording of weed sites. I am experiencing a 40 second
> lag between the digital generation of coordinate data by the GPS, and the
> availability of this data for plotting points in the MapInfo application.
> The motion of the "Current Position" indicator in the Map Window is always
> 40 seconds behind the actual current position. Line plotting indicates
that
> the current position data is being read by the application, but is simply
> not being made available for point plotting for 40 seconds. Instantaneous
> plotting (+/- 3 seconds) of the current position is crucial to my
operation.
> Has anyone experienced a similar problem? Is there a fix?
>
> Cheers
> Tom Colley
> Environmental GIS Analyst
> Blue Mountains City Council
> Tel: (02) 4780 5433
> Email: [EMAIL PROTECTED]
_______________________________________________________________________
List hosting provided by Directions Magazine | www.directionsmag.com |
To unsubscribe, send e-mail to [EMAIL PROTECTED] and
put "unsubscribe MapInfo-L" in the message body.
