Re: Correction: Hectares??

To: "Conole, Lawrie" <>
Subject: Re: Correction: Hectares??
From: (chris dahlberg)
Date: Mon, 6 Apr 1998 16:24:25 +1000 (EST)
Hi Lawrie
          after making maps with the Royal Australin Survey Corps for more
than 20 years I am watching this with interest. The Standard 1:100 000 map
is 30 minutes of Latitude by 30 minutes of Longitude. The edges of the map
are not square and straight because it is projected onto a flat surface with
a 1 000 metre grid. 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
be more than one building etc etc. I have my doubts that Australia is
covered with 1:100 000 maps. In the open spaces the maps may be 1: 250 000
and in tight areas they may be 1: 25 000. There is other mapping at
different scales for different uses, and a lot of mapping has been
digitised, where special maps can be produced for special purposes like a
bird atlas. I will leave you with it.
Chris Dahlberg

Due to technicalogical advancements and dedication one of the smallest
Australian Army Corps(RASVY) worked itself out of a job and was disbanded
last year after 81 years.

>In my last post I said "...... 100 x 100 ha ....".  Of couse I meant 100
>x 100 metres (ie. a hectare).
>Cheers, Lawrie

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

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