Re: gpsdrive 2.09 feedback: Different Coordinate Systems / Enter Waypoint

Gpsbabel is about converting waypoints between different devices. This notice
was not about converting different file formats. It was about  transformation
of geographic coordinates. gpsdrive works with WGS-84 that is native GPS
coordinate system. There are many more here. I guess that it could be useful
to have possibility to recalculate WGS-84 to something else. To show on the
screen recalculated coordinates. Here is an example of some different
coordinate system (random pick):
http://jidanni.org/geo/taiwan_datums/index_en.html

Petr

------ Original Message ------
Received: Tue, 29 Mar 2005 02:35:17 AM CEST
From: Joerg Ostertag <joerg.ostertag-JIHLWWVY+ZDfNHaHW0tyqg@xxxxxxxxxxxxxxxx>
To: gpsdrive-ahljRfkWE0EwtzFM8z8+AfP6llvjuJOh@xxxxxxxxxxxxxxxx
Subject: Re: gpsdrive 2.09 feedback:  Different Coordinate Systems / Enter
Waypoint

> I'm not sure about including too many coordinate systems into gpsdrive. This

> might make the current code really complicated. But you might be able to put

> input/output of coordinates into one module and this way manage to enter 
> coordinates in many different coordinate systems. You could have a look at 
> gpsbabel which seems to be capable of converting many formats. Maybe this 
> helps as a start for programming the different coordinate systems.
> 
> Entering a coordinate by hand (with an input Mask) would really make sense
if 
> you'd be able to use different coordinate systems. But as we don't have this

> feature yet I usually prefer creating my waypoint with one of the scripts or

> simply by editing the way.txt.
> 
> 
> You wrote:
> ----------
> Coordinates, cannot enter coordinates manualy when mode is without decimal
> point.
> 
> Two formats of coordinates: 50o03'59.19 or 50.06644 is the same latitude.
When
> mode without decimal point is selected (first case), I cannot manaly (from
> keyboard) add waypoint. I can only select on the map but I cannot correct
as
> possition is rewrited to the decimal point format. (try add waypoint when
> "decimal position" option is unchecked. OK, I can but I need a calculator
and
> knowladge how to transfer coordinates. This is related to the notice I miss
> tool for coordinate translations. Coordinates are publised in several
formats
> and transformation is sometomes needed. Like, add possition 50o08'59.9"N
> 12o25'47.89", it is difficult now in gpsdrive...
> 
> There are many more coordinates systems used to produce real maps. Some GPS
> receivers can use different coordinates than WGS-84. Maybe that this
feature
> could be added to gpsdrive, at least basic transformations. A lot of
> mathemetics... Maps are produced with different coordinates than WGS-84.
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---------------------------------
  Petr Slansky, slansky-Jdbf3xiKgS8@xxxxxxxxxxxxxxxx
---------------------------------


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