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<div class="moz-cite-prefix">If you think that the data must be 100%
accurate you will have a blank map ... therebe dragons. <br>
<br>
The world standard for 1 kilogram mass is an artefact (a physical
object) in Paris. <br>
<br>
You might think that it is 100% accurate and you'd be wrong. The
surface corrodes, gets dust on it .. that adds weight .. so you
polish it .. how much do you polish it? Too much and you remove
weight, not enough and you leave weight behind. <br>
<br>
Everything has some level of uncertainty. <br>
The JOSM way simplifier is set for a maximum displacement of 3
meters. Is that acceptable? <br>
Remember that the original data has some level of uncertainty too.
Typically a GPS would be 10 meters. Average a few and you might
get down to 5 meters.<br>
<br>
Personally I'd rather have an indication that something is there
even if 'inaccurate' ... compared to a blank bit of paper. <br>
<br>
On 26-Nov-16 09:18 AM, Dave F wrote:<br>
</div>
<blockquote cite="mid:5838B898.4010007@btinternet.com" type="cite">
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Good.<br>
<br>
Bearing in mind that nothing* in OSM is 100% accurate (& the
Somerset Levels do exist), how accurate do you need the data to be
for them to be good enough for inclusion?<br>
<br>
* No, honestly, it's not.<br>
<br>
DaveF <br>
<br>
<br>
<div class="moz-cite-prefix">On 25/11/2016 15:12, Jason Woollacott
wrote:<br>
</div>
<blockquote
cite="mid:MMXP123MB0815ED986761C8604017A20BBA890@MMXP123MB0815.GBRP123.PROD.OUTLOOK.COM"
type="cite">
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dir="ltr">
<p>in the description i remember it stated it was based on the
10ft and 25ft contours. </p>
<br>
<br>
<div style="color: rgb(0, 0, 0);">
<hr tabindex="-1" style="display:inline-block; width:98%">
<div id="divRplyFwdMsg" dir="ltr"><font
style="font-size:11pt" face="Calibri, sans-serif"
color="#000000"><b>From:</b> Dave F <a
moz-do-not-send="true" class="moz-txt-link-rfc2396E"
href="mailto:davefoxfac63@btinternet.com"><davefoxfac63@btinternet.com></a><br>
<b>Sent:</b> 25 November 2016 14:07<br>
<b>To:</b> Jason Woollacott; <a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:talk-gb@openstreetmap.org">talk-gb@openstreetmap.org</a><br>
<b>Subject:</b> Re: [Talk-GB] Somerset Levels</font>
<div> </div>
</div>
<div>Not 100% sure, but wasn't it based on contour levels? <br>
<br>
<div class="moz-cite-prefix">On 24/11/2016 17:35, Jason
Woollacott wrote:<br>
</div>
<blockquote type="cite">
<div id="divtagdefaultwrapper" dir="ltr"
style="font-size:12pt; color:#000000;
font-family:Calibri,Arial,Helvetica,sans-serif">
<p>HI,</p>
<p><br>
</p>
<p>Yes, I removed this as I felt that it was incorrect
and did not reflect the conditions on the ground.
It was specifically removed under one change back
in September 2016, whilst I was working on
addressing some of the other mapping errors around
that area. The Change was deliberately done
under one change set, so that it should be easily
restored if there was ever a need for it.
However the boundary was a guestimate at best and
did not reflect the actual area of the Somerset
Levels, (going through Bridgwater & Weston
Super Mare). </p>
<p><br>
</p>
<p>An example of what is really defined as the
Somerset Levels is here <a moz-do-not-send="true"
href="http://www.bbc.co.uk/news/uk-england-somerset-26080597"
class="OWAAutoLink" id="LPlnk318257"
previewremoved="true">http://www.bbc.co.uk/news/uk-england-somerset-26080597</a> but
there isn't an extract, that I've found, that we
could use for tracing.</p>
<p><br>
</p>
<p>I'm not sure what benefit reinstating this
change would give. </p>
<p><br>
</p>
<p>Jason (UniEagle)</p>
<br>
<br>
<div style="color:rgb(0,0,0)">
<div>
<hr tabindex="-1" style="display:inline-block;
width:98%">
<div id="x_divRplyFwdMsg" dir="ltr"><font
style="font-size:11pt" face="Calibri,
sans-serif" color="#000000"><b>From:</b> Dave
F <a moz-do-not-send="true"
class="moz-txt-link-rfc2396E"
href="mailto:davefoxfac63@btinternet.com"><davefoxfac63@btinternet.com></a><br>
<b>Sent:</b> 23 November 2016 12:55<br>
<b>To:</b> <a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:talk-gb@openstreetmap.org">
talk-gb@openstreetmap.org</a><br>
<b>Subject:</b> Re: [Talk-GB] Somerset Levels</font>
<div> </div>
</div>
</div>
<font size="2"><span style="font-size:10pt">
<div class="PlainText">It appears it was deleted
by user UniEagle<br>
<a moz-do-not-send="true"
href="http://www.openstreetmap.org/changeset/42348215"
id="LPlnk44041" previewremoved="true">http://www.openstreetmap.org/changeset/42348215</a><br>
You may wish to contact him & ask to
participate in this discussion.<br>
<br>
FYI<br>
Undeleting using Potlatch 1<br>
If you know a location where the boundary was,
zoom in as close as <br>
possible, then amend the URL & open in P1.
This is an example near <br>
Bridgwater:<br>
<a moz-do-not-send="true"
href="https://www.openstreetmap.org/edit?editor=potlatch&#map=16/51.1414/-2.9724"
id="LPlnk3531" previewremoved="true">https://www.openstreetmap.org/edit?editor=potlatch&#map=16/51.1414/-2.9724</a><br>
<br>
Hit the 'U' (for undelete)<br>
Then wait... & wait some more.<br>
Eventually some red lines should appear (the
server can be temperamental <br>
& refuse to play)<br>
Select the way of the relation.<br>
In the preset list at the bottom of the screen
there should be a red box <br>
with 'Click to Unlocked' written in it.<br>
Click to unlock (again, this may take some
time)<br>
Save & close.<br>
Open your preferred editor to check it was
properly undeleted.<br>
<br>
DaveF<br>
<br>
On 23/11/2016 00:45, Nick Austin wrote:<br>
> Does anyone know what happened to the
Somerset Levels super-relation?<br>
><br>
> I don't know how to search for deleted
stuff so I can't look up it's<br>
> history to see what happened.<br>
><br>
> TIA.<br>
> Nick.<br>
><br>
>
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<pre>_______________________________________________
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