birding-aus

FW: Correction: Hectares??

To: "'ozbird'" <>
Subject: FW: Correction: Hectares??
From: "Conole, Lawrie" <>
Date: Tue, 7 Apr 1998 10:37:17 +1000
> The accuracy is very good but land marks are symbolised
> being much bigger than if they were scaled in. They may be moved on a
> priority system so that all the symbols fit. A building symbol may
> actually
> 
> Hi Chris
> 
> I wasn't having a swipe at cartographers when I said that some topo
> features are not accurately located on maps!  Vehicular tracks are
> often wrongly marked, but I would guess that to be something to do
> with not being able to ground-truth everything seen in aerial photos.
> Most newly published 1:100,000 maps now have the UTM grid marked with
> red tabs along the map margin, in addition to the AMG one, so now I
> can verify landmarks using my GPS, and confirm what I always believed
> - that vehicular tracks (as opposed to tarmac roads) are rarely
> located absolutely accurately on a map.  In big forest, track
> intersections and watercourse crossings are handy navigational aids.
> 
> Cheers
> 
> Lawrie Conole
> 58 Holden Street, Fitzroy North 3068 Victoria, AUSTRALIA
> Phone AH (03) 9486 4575
> Ph Mob (0419) 588 993
> Email <>
> 
> 

<Prev in Thread] Current Thread [Next in Thread>
Admin

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the birding-aus mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU