<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p><br>
</p>
<div class="moz-cite-prefix">On 3/10/23 19:41, Andrew Davidson
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:34d176f0-29c0-2ae5-05fb-9ed3e10ae60d@gmail.com">On
2/10/23 21:53, Little Maps wrote:
<br>
<blockquote type="cite">As I understand your message, we have
and/or can get population data
<br>
for a small proportion of places in Aus (probably with
comprehensive
<br>
data for most larger places and less data for the many smaller
ones).
<br>
</blockquote>
<br>
There are two classes of problems:
<br>
<br>
1. Urban centres that have gown so much that they have coalesced
with neighbouring urban centres. Some of these are easy to assign
the population to a single place node (Gold Coast, Nowra -
Bomaderry, Shepparton - Mooroopna). Others are not clear where you
would put the population (Central Coast, Blue Mountains, Ocean
Grove - Barwon Heads). There are about 90 of these out of 1800.
<br>
<br>
2. Settlements that are so small that the ABS doesn't consider
them worthy of their own mesh block (the smallest geographic unit
they report on). If a settlement doesn't rate a single residential
mesh block I'd say it's not really a candidate for anything above
hamlet.
<br>
<br>
<blockquote type="cite">This means that, if we develop a guideline
based primarily on
<br>
population data we then have to develop a simple way to
extrapolate
<br>
the guidelines to places without pop data. Yes?
<br>
</blockquote>
<br>
If you can't get population data that kinda suggests it's either
tiny or, grown so big that you have to start worrying about how to
subdivide the urban area into suburbs etc.
<br>
<br>
<blockquote type="cite">As a simple starting point, I’m curious
whether it’s possible to
<br>
first try to get agreement on general cut-offs for
<br>
villages/towns/cities etc using only the places that have pop
data
<br>
(i.e. those you’ve mapped). We could present some different
scenarios
<br>
so that everyone could see the implications of different
decisions
<br>
for areas that they know.
<br>
</blockquote>
<br>
The ABS uses a threshold of 1000 people in an urban area to
identify an urban centre. In OSM speak this would be a town or
city.
<br>
<br>
At the small end the old Natmap standard was not to show any
settlements smaller than 200. Maybe that's the threshold for
hamlet/village. Although I get the impression people would like to
adjust that for the level of services available. Perhaps we could
apply the Fitzpatrick adjustment:
<br>
<br>
add on or take off 50 people for each one of the following is or
isn't available:
<br>
<br>
pub
<br>
shop
<br>
servo
<br>
a government service (PO/Hospital/Police)
<br>
<br>
So a settlement with pub, shop, servo, and school with a
population of 4 would be a village. A rural residential
development with no services and a population of 750 would be a
hamlet.
<br>
<br>
The cutoffs are going to be arbitrary. The important thing is to
just choose some and make sure that there's some reasoning behind
them.
<br>
<br>
<br>
</blockquote>
<p><br>
</p>
<p>The 'government/community services' might be ordered by there
total numbers? <br>
</p>
<p>PO (including local PO agents)</p>
<p>Police <br>
</p>
<p>Doctors (theses seam scarcer than Police?_</p>
<p>Hospitals</p>
<p><br>
</p>
<p>Outliers? <br>
</p>
<p>The Ilkurlka Roadhouse is on the Anne Beadell Highway. Next fuel
.. east 771 km <span style="font-family:raleway,sans-serif;"
class="wixui-rich-text__text">Coober Pedy or west 550 km </span><span
style="font-family:raleway,sans-serif;"
class="wixui-rich-text__text">Laverton.</span></p>
<p><span style="font-family:raleway,sans-serif;"
class="wixui-rich-text__text">Population? 1? ... ~200 at
Tjuntjuntjara. the nearest aboriginal community? <br>
</span></p>
<p><span style="font-family:raleway,sans-serif;"
class="wixui-rich-text__text"><a class="moz-txt-link-freetext" href="https://www.ilkurlka.org.au/">https://www.ilkurlka.org.au/</a></span></p>
<p><span style="font-family:raleway,sans-serif;"
class="wixui-rich-text__text"><br>
</span></p>
<p><span style="font-family:raleway,sans-serif;"
class="wixui-rich-text__text">Possibly these kind of places only
go on certain types of map .. Hemma does a good job with
highlighting such places with fuel/store symbols ... and usually
some contact details. <br>
</span></p>
<p><span style="font-family:raleway,sans-serif;"
class="wixui-rich-text__text"><br>
</span></p>
<p><span style="font-family:raleway,sans-serif;"
class="wixui-rich-text__text"><br>
</span></p>
<p><span style="font-family:raleway,sans-serif;"
class="wixui-rich-text__text"><br>
</span><span style="font-family:raleway,sans-serif;"
class="wixui-rich-text__text"></span></p>
</body>
</html>