[Qgis-user] Lat Lon Tools question

[chris hermansen]

Eric and list,

Eric, not sure what you're disagreeing with.

35 latitude is 35 north, sort of Denver-ish.

Not south of equator.

-35 latitude is 35 south of equator.

On Sat, Feb 6, 2021, 10:42 Eric Sorensen <e.b.s at me.com> wrote:

> I’ll have to disagree with you Chris.  Zone 13N has a southern boarder
> that lies on the equator.
>
>
> On Feb 6, 2021, at 11:33 AM, chris hermansen <clhermansen at gmail.com>
> wrote:
>
> Eric and list,
>
> On Sat, Feb 6, 2021, 10:18 Eric Sorensen <e.b.s at me.com> wrote:
>
>> Hi,
>>
>> I have waypoints from a Garmin GPS that I import from a gpx file into a
>> vector layer.
>>
>> In the gpx file, they are of the form;
>>
>>   <wpt lat="35.908381976187229" lon="-106.282681999728084">
>>     <ele>2262.188964999999826</ele>
>>     <time>2021-02-05T18:03:05Z</time>
>>     <name>Park</name>
>>     <sym>Flag, Blue</sym>
>>     <type>user</type>
>>     <extensions>
>>       <gpxx:WaypointExtension>
>>         <gpxx:DisplayMode>SymbolAndName</gpxx:DisplayMode>
>>       </gpxx:WaypointExtension>
>>       <wptx1:WaypointExtension>
>>         <wptx1:DisplayMode>SymbolAndName</wptx1:DisplayMode>
>>       </wptx1:WaypointExtension>
>>       <ctx:CreationTimeExtension>
>>         <ctx:CreationTime>2021-02-05T18:03:05Z</ctx:CreationTime>
>>       </ctx:CreationTimeExtension>
>>     </extensions>
>>   </wpt>
>>
>>
>> They appear in the correct location in my project.  Now, I am trying to
>> display a label at each point using rule-based labeling with the following
>> expression;
>>
>> concat(name, ', ', utm($Y, $X))
>>
>> The labels appear as expected, except one small problem.  I know the
>> points are in UTM zone 13S, yet the label shows zone 13N.
>>
>
> Your lat long 35,-106 are far west in the northern hemisphere. Therefore
> the UTM zone is 13N not 13S.
>
> This is somewhere near Memphis Tennessee if I am not wrong.
>
>
> If you're expecting -35,-106 that's somewhere out in the Pacific far west
> of Santiago Chile
>
>
>> Any thoughts on what I am doing wrong.
>>
>
> Maybe you want -35,+106?
>
>>
>
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