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<p>Hi,</p>
<p>I have add a google drive link to the world MGRS. This should
help.<br>
</p>
<p><a class="moz-txt-link-freetext" href="https://drive.google.com/file/d/1HeTOUCHrOF4dqLXyebO33nUwioYGnGbI/view?usp=sharing">https://drive.google.com/file/d/1HeTOUCHrOF4dqLXyebO33nUwioYGnGbI/view?usp=sharing</a></p>
<p>Nicolas<br>
</p>
<div class="moz-cite-prefix">On 2021-02-08 9:34 a.m., C Hamilton
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CABPxTTqWkLLEzq_oMgj0-oKOfhFrJ=VnssjEF89+8Ujts+TWbQ@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">I should have jumped in on this conversation over
the weekend especially since I am the author of Lat Lon Tools.
but all who responded have properly addressed the problems with
UTM and especially with how MGRS got mixed in with UTM and the
confusion with N & S. What Lat Lon Tools provides is the
standard UTM coordinates without the MGRS latitude bands. I have
been considering adding another function that provides the
alternative UTM with MGRS latitude bands.
<div><br>
</div>
<div>If anyone has any suggestions on the best way to present
these two different UTM versions that helps to avoid
ambiguity, please let me know.</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Calvin</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sat, Feb 6, 2021 at 2:19 PM
Eric Sorensen <<a href="mailto:e.b.s@me.com"
moz-do-not-send="true">e.b.s@me.com</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div style="overflow-wrap: break-word;">As Greg and others
point out, I appear to be using the UTM zone term
inappropriately. My apologies.
<div><br>
</div>
<div>What I am after in my label, is the MGRS flavor that
includes the latitude band, and agrees with the image
shown in this link;</div>
<div><br>
</div>
<div><a
href="https://docs.qgis.org/3.4/en/_images/utm_zones.png"
target="_blank" moz-do-not-send="true">https://docs.qgis.org/3.4/en/_images/utm_zones.png</a></div>
<div><br>
</div>
<div>After you folks successfully educated me on this, I
came up with the following;</div>
<div><br>
</div>
<div>concat(name, ', ', mgrs_gzd($Y, $X), ' ',
format_number(utm_east( $Y, $X), 0), ' ',
format_number(utm_north( $Y, $X), 0))</div>
<div><br>
</div>
<div>Which gets me a label like this for the point I
originally supplied;</div>
<div>Park, 13S 384,258 3,974,547</div>
<div><br>
</div>
<div>This is how my Garmin GPS displays coordinates of
waypoints (sans the commas), and how someone would input
the point into their gps, after I hand them a map I have
created in QGIS. Now to eliminate the commas.</div>
<div><br>
</div>
<div>Thank you all for your input,</div>
<div>es</div>
<div><br>
<div><br>
<blockquote type="cite">
<div>On Feb 6, 2021, at 11:41 AM, Greg Troxel <<a
href="mailto:gdt@lexort.com" target="_blank"
moz-do-not-send="true">gdt@lexort.com</a>>
wrote:</div>
<br>
<div>
<div><br>
Eric Sorensen <<a href="mailto:e.b.s@me.com"
target="_blank" moz-do-not-send="true">e.b.s@me.com</a>>
writes:<br>
<br>
<blockquote type="cite"> <wpt
lat="35.908381976187229"
lon="-106.282681999728084"><br>
<ele>2262.188964999999826</ele><br>
</blockquote>
<br>
<blockquote type="cite">The labels appear as
expected, except one small problem. I know the
points are in UTM zone 13S, yet the label shows
zone 13N.<br>
<br>
Any thoughts on what I am doing wrong.<br>
</blockquote>
<br>
That latitude is north, and in New Mexico. Why do
you think it's zone<br>
13S?<br>
<br>
<pause to read><br>
<br>
Beware of the confusion between grid zones from
MGRS, not technically<br>
part of UTM, and UTM north/south. See<br>
<br>
<a
href="https://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system#Notation"
target="_blank" moz-do-not-send="true">https://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system#Notation</a><br>
<br>
So it seems the UTM output uses S and N -- which
is what I would expect<br>
for straight UTM without a MGRS flavor.<br>
<br>
If you moved north, you could be in 13T, from
40-48 degrees, and not<br>
have this issue, but then you'd have more snow :-)<br>
<br>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</div>
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<pre class="moz-signature" cols="72">--
Nicolas Cadieux
<a class="moz-txt-link-freetext" href="https://gitlab.com/njacadieux">https://gitlab.com/njacadieux</a></pre>
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