OT: Convert UTM to Longitude/Latitude?

T

Terry Pinnell

Guest
I'm using an interesting Spanish map source at
http://sigpac.mapa.es/fega/visor/

Having zoomed to an area around Competa and Canillas (a few miles NW
of Malaga in Andalucia, southern Spain), I want to read the long/lat
(DDD.dddd) of a few locations, for calibrating some GPS tracks I
recorded on a short walking holiday there last week. But the site
shows UTM co-ordinates, with which I'm unfamiliar. For example I see
these:

COORDENADAS UTM
---------------
X : 408446.95
Y : 4080382.00
Huso : 30

So how do I convert UTM to Long/Lat please? After some googling, I
downloaded a simple conversion program called utm2dll. However, it
asks for a Zone number and letter. Is the zone the number
I see against 'Huso' please? And what is the zone letter? I see
nothing about that anywhere on the map...

Presumably the conversion is not quite as easy as say Fahrenheit to
Centigrade, but I'm hoping it's closer to that than Laplace
Transforms. <g>

--
Terry, West Sussex, UK
 
"Terry Pinnell" <terrypinDELETE@THESEdial.pipex.com> a écrit dans le message
de news:eek:ius51ht59v7553sbne0pmqoebddksl8ri@4ax.com...
I'm using an interesting Spanish map source at
http://sigpac.mapa.es/fega/visor/

Having zoomed to an area around Competa and Canillas (a few miles NW
of Malaga in Andalucia, southern Spain), I want to read the long/lat
(DDD.dddd) of a few locations, for calibrating some GPS tracks I
recorded on a short walking holiday there last week. But the site
shows UTM co-ordinates, with which I'm unfamiliar. For example I see
these:

COORDENADAS UTM
---------------
X : 408446.95
Y : 4080382.00
Huso : 30

So how do I convert UTM to Long/Lat please? After some googling, I
downloaded a simple conversion program called utm2dll. However, it
asks for a Zone number and letter. Is the zone the number
I see against 'Huso' please? And what is the zone letter? I see
nothing about that anywhere on the map...

Presumably the conversion is not quite as easy as say Fahrenheit to
Centigrade, but I'm hoping it's closer to that than Laplace
Transforms. <g
Click to expand...
Hi Terry,

I'm not familiar with the different coordinates conversion, but I routinely
use a GPS for flying (paragliding) and mine, and I guess almost all the GPS,
accepts all the coordinates systems, since the one officially used depends
on the country.

Have a look at your GPS menus and you'll probably find how to make it uses
the UTM coordinates.

In case you don't find it, make a file with all your coordinates, and I'll
submit it to the prog I use to manage my flights and I'll return you it
converted to the one you want.


--
Thanks,
Fred.
 
I read in sci.electronics.design that Terry Pinnell
<terrypinDELETE@THESEdial.pipex.com> wrote (in
<oius51ht59v7553sbne0pmqoebddksl8ri@4ax.com>) about 'OT: Convert UTM to
Longitude/Latitude?', on Thu, 14 Apr 2005:
Having zoomed to an area around Competa and Canillas (a few miles NW of
Malaga in Andalucia, southern Spain), I want to read the long/lat
(DDD.dddd) of a few locations, for calibrating some GPS tracks I
recorded on a short walking holiday there last week. But the site shows
UTM co-ordinates, with which I'm unfamiliar.
Click to expand...
Google for UTM co-ordinates. I get 299 000 hits, and the first few look
very promising.
--
Regards, John Woodgate, OOO - Own Opinions Only.
There are two sides to every question, except
'What is a Moebius strip?'
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
 
John Woodgate <jmw@jmwa.demon.contraspam.yuk> wrote:

I read in sci.electronics.design that Terry Pinnell
terrypinDELETE@THESEdial.pipex.com> wrote (in
oius51ht59v7553sbne0pmqoebddksl8ri@4ax.com>) about 'OT: Convert UTM to
Longitude/Latitude?', on Thu, 14 Apr 2005:
Having zoomed to an area around Competa and Canillas (a few miles NW of
Malaga in Andalucia, southern Spain), I want to read the long/lat
(DDD.dddd) of a few locations, for calibrating some GPS tracks I
recorded on a short walking holiday there last week. But the site shows
UTM co-ordinates, with which I'm unfamiliar.

Google for UTM co-ordinates. I get 299 000 hits, and the first few look
very promising.
Click to expand...
For explanations of what UTM is all about maybe. But none I found
there give me a practical, simple-to-use *conversion* program.

The best I've found so far are a pair of DOS-based programs called
UTM2LL and LL2UTM, but they're awkward to use. I'm surprised I haven't
found a simple Windows utility yet, or an Excel spreadsheet.

--
Terry Pinnell
Hobbyist, West Sussex, UK
 
On Thu, 14 Apr 2005 18:02:36 +0100, Terry Pinnell
<terrypinDELETE@THESEdial.pipex.com> wrote:

John Woodgate <jmw@jmwa.demon.contraspam.yuk> wrote:

I read in sci.electronics.design that Terry Pinnell
terrypinDELETE@THESEdial.pipex.com> wrote (in
oius51ht59v7553sbne0pmqoebddksl8ri@4ax.com>) about 'OT: Convert UTM to
Longitude/Latitude?', on Thu, 14 Apr 2005:
Having zoomed to an area around Competa and Canillas (a few miles NW of
Malaga in Andalucia, southern Spain), I want to read the long/lat
(DDD.dddd) of a few locations, for calibrating some GPS tracks I
recorded on a short walking holiday there last week. But the site shows
UTM co-ordinates, with which I'm unfamiliar.

Google for UTM co-ordinates. I get 299 000 hits, and the first few look
very promising.

For explanations of what UTM is all about maybe. But none I found
there give me a practical, simple-to-use *conversion* program.

The best I've found so far are a pair of DOS-based programs called
UTM2LL and LL2UTM, but they're awkward to use. I'm surprised I haven't
found a simple Windows utility yet, or an Excel spreadsheet.
Click to expand...
http://www.uwgb.edu/dutchs/UsefulData/UTMFormulas.HTM

includes an Excel spreadsheet.

Found by Googling on "convert UTM"... first result ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
 
"Fred Bartoli"
<fred._canxxxel_this_bartoli@RemoveThatAlso_free.fr_AndThisToo> wrote:

"Terry Pinnell" <terrypinDELETE@THESEdial.pipex.com> a écrit dans le message
de news:eek:ius51ht59v7553sbne0pmqoebddksl8ri@4ax.com...
I'm using an interesting Spanish map source at
http://sigpac.mapa.es/fega/visor/

Having zoomed to an area around Competa and Canillas (a few miles NW
of Malaga in Andalucia, southern Spain), I want to read the long/lat
(DDD.dddd) of a few locations, for calibrating some GPS tracks I
recorded on a short walking holiday there last week. But the site
shows UTM co-ordinates, with which I'm unfamiliar. For example I see
these:

COORDENADAS UTM
---------------
X : 408446.95
Y : 4080382.00
Huso : 30

So how do I convert UTM to Long/Lat please? After some googling, I
downloaded a simple conversion program called utm2dll. However, it
asks for a Zone number and letter. Is the zone the number
I see against 'Huso' please? And what is the zone letter? I see
nothing about that anywhere on the map...

Presumably the conversion is not quite as easy as say Fahrenheit to
Centigrade, but I'm hoping it's closer to that than Laplace
Transforms. <g


Hi Terry,

I'm not familiar with the different coordinates conversion, but I routinely
use a GPS for flying (paragliding) and mine, and I guess almost all the GPS,
accepts all the coordinates systems, since the one officially used depends
on the country.

Have a look at your GPS menus and you'll probably find how to make it uses
the UTM coordinates.

In case you don't find it, make a file with all your coordinates, and I'll
submit it to the prog I use to manage my flights and I'll return you it
converted to the one you want.
Click to expand...
Thanks, Fred. Yes, my Garmin GPS 12 can handle UTM, but during the
week I recorded these walks I had it set to Lat/Long DD.DDDDD. I've
since found very few maps, but most of those have used Lat/Long. And I
have managed a couple of calibration points for one of them. But this
latest discovery, the SigPac site, is better in most respects - except
it uses UTM!

However, based on your post, I'll try making a one-line waypoint file
and upload it to my GPS unit, then play with changing the settings.


--
Terry Pinnell
Hobbyist, West Sussex, UK
 
Jim Thompson <thegreatone@example.com> wrote:

On Thu, 14 Apr 2005 18:02:36 +0100, Terry Pinnell
terrypinDELETE@THESEdial.pipex.com> wrote:

John Woodgate <jmw@jmwa.demon.contraspam.yuk> wrote:

I read in sci.electronics.design that Terry Pinnell
terrypinDELETE@THESEdial.pipex.com> wrote (in
oius51ht59v7553sbne0pmqoebddksl8ri@4ax.com>) about 'OT: Convert UTM to
Longitude/Latitude?', on Thu, 14 Apr 2005:
Having zoomed to an area around Competa and Canillas (a few miles NW of
Malaga in Andalucia, southern Spain), I want to read the long/lat
(DDD.dddd) of a few locations, for calibrating some GPS tracks I
recorded on a short walking holiday there last week. But the site shows
UTM co-ordinates, with which I'm unfamiliar.

Google for UTM co-ordinates. I get 299 000 hits, and the first few look
very promising.

For explanations of what UTM is all about maybe. But none I found
there give me a practical, simple-to-use *conversion* program.

The best I've found so far are a pair of DOS-based programs called
UTM2LL and LL2UTM, but they're awkward to use. I'm surprised I haven't
found a simple Windows utility yet, or an Excel spreadsheet.

http://www.uwgb.edu/dutchs/UsefulData/UTMFormulas.HTM

includes an Excel spreadsheet.

Found by Googling on "convert UTM"... first result ;-)

...Jim Thompson
Click to expand...
Thanks - that will do very nicely. That was about the first hit I
found yesterday too <g>. But I assumed the LINK in "It would sure be
nice if someone wrote a SPREADSHEET to do this," would explain what a
spreadsheet was, and skated on by!

--
Terry Pinnell
Hobbyist, West Sussex, UK
 
I read in sci.electronics.design that Terry Pinnell
<terrypinDELETE@THESEdial.pipex.com> wrote (in
<vb8t51dov9jegs67uhbuqmku81s0pu8muk@4ax.com>) about 'OT: Convert UTM to
Longitude/Latitude?', on Thu, 14 Apr 2005:

For explanations of what UTM is all about maybe. But none I found there
give me a practical, simple-to-use *conversion* program.
Click to expand...

There is a conversion *page* at:

http://home.hiwaay.net/~taylorc/toolbox/geography/geoutm.html
--
Regards, John Woodgate, OOO - Own Opinions Only.
There are two sides to every question, except
'What is a Moebius strip?'
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
 
Terry Pinnell wrote:
COORDENADAS UTM
---------------
X : 408446.95
Y : 4080382.00
Huso : 30

So how do I convert UTM to Long/Lat please? After some googling, I
Click to expand...
UTM2LL'30' 408446.95 4080382
36.86493776 -4.027133199

Note: negative longitude is west, positive, east.

Ted
 
Terry Pinnell <terrypinDELETE@THESEdial.pipex.com> wrote:

Jim Thompson <thegreatone@example.com> wrote:

On Thu, 14 Apr 2005 18:02:36 +0100, Terry Pinnell
terrypinDELETE@THESEdial.pipex.com> wrote:

John Woodgate <jmw@jmwa.demon.contraspam.yuk> wrote:

I read in sci.electronics.design that Terry Pinnell
terrypinDELETE@THESEdial.pipex.com> wrote (in
oius51ht59v7553sbne0pmqoebddksl8ri@4ax.com>) about 'OT: Convert UTM to
Longitude/Latitude?', on Thu, 14 Apr 2005:
Having zoomed to an area around Competa and Canillas (a few miles NW of
Malaga in Andalucia, southern Spain), I want to read the long/lat
(DDD.dddd) of a few locations, for calibrating some GPS tracks I
recorded on a short walking holiday there last week. But the site shows
UTM co-ordinates, with which I'm unfamiliar.

Google for UTM co-ordinates. I get 299 000 hits, and the first few look
very promising.

For explanations of what UTM is all about maybe. But none I found
there give me a practical, simple-to-use *conversion* program.

The best I've found so far are a pair of DOS-based programs called
UTM2LL and LL2UTM, but they're awkward to use. I'm surprised I haven't
found a simple Windows utility yet, or an Excel spreadsheet.

http://www.uwgb.edu/dutchs/UsefulData/UTMFormulas.HTM

includes an Excel spreadsheet.

Found by Googling on "convert UTM"... first result ;-)

...Jim Thompson

Thanks - that will do very nicely. That was about the first hit I
found yesterday too <g>. But I assumed the LINK in "It would sure be
nice if someone wrote a SPREADSHEET to do this," would explain what a
spreadsheet was, and skated on by!
Click to expand...
On closer inspection that spreadsheet seems to be screwed up in
various ways. An entry such as 10.1 deg is shown as 10 degs 5 mins and
60 secs. And 4.1 degs W becomes -4 degs -6 mins 1.3E-12 secs. (Note
the +ve sign for secs.) And UTM results seem wildly wrong. Of course,
can't rule possibility that I'm using it wrongly.

In contrast, the page JW recommended seems great. Simple to use, and
accurate.

--
Terry Pinnell
Hobbyist, West Sussex, UK
 
John Woodgate <jmw@jmwa.demon.contraspam.yuk> wrote:

I read in sci.electronics.design that Terry Pinnell
terrypinDELETE@THESEdial.pipex.com> wrote (in
vb8t51dov9jegs67uhbuqmku81s0pu8muk@4ax.com>) about 'OT: Convert UTM to
Longitude/Latitude?', on Thu, 14 Apr 2005:

For explanations of what UTM is all about maybe. But none I found there
give me a practical, simple-to-use *conversion* program.


There is a conversion *page* at:

http://home.hiwaay.net/~taylorc/toolbox/geography/geoutm.html
Click to expand...
Bingo - that works fine, many thanks.

One point I'm currently puzzling over: UTM co-ordinates include not
only the easting and northing numbers, but a Zone number and a Zone
letter. Andalucia is 30 S, for example. That java routine returns
accurate numbers and the zone number 30, but not the zone letter.

--
Terry Pinnell
Hobbyist, West Sussex, UK
 
On Thu, 14 Apr 2005 19:12:37 +0100, Terry Pinnell
<terrypinDELETE@THESEdial.pipex.com> wrote:


Thanks, Fred. Yes, my Garmin GPS 12 can handle UTM, but during the
week I recorded these walks I had it set to Lat/Long DD.DDDDD. I've
since found very few maps, but most of those have used Lat/Long. And I
have managed a couple of calibration points for one of them. But this
latest discovery, the SigPac site, is better in most respects - except
it uses UTM!

However, based on your post, I'll try making a one-line waypoint file
and upload it to my GPS unit, then play with changing the settings.
Click to expand...

Your GPS receiver will convert waypoint coordinates in whatever format
you select, regardless of the format you initially used to enter them.

The receivers store waypoints in some common format and datum, and
convert between that format and the selected display format and datum
as needed.



--
Peter Bennett VE7CEI
email: peterbb4 (at) interchange.ubc.ca
GPS and NMEA info and programs: http://vancouver-webpages.com/peter/index.html
Newsgroup new user info: http://vancouver-webpages.com/nnq
 
Terry Pinnell <terrypinDELETE@thesedial.pipex.com> wrote:
So how do I convert UTM to Long/Lat please?
Click to expand...
For far more than you ever wanted to know, ask in sci.geo.cartography
or maybe sci.geo.satellite-nav .

Matt Roberds
 
mroberds@worldnet.att.net wrote:

Terry Pinnell <terrypinDELETE@thesedial.pipex.com> wrote:
So how do I convert UTM to Long/Lat please?

For far more than you ever wanted to know, ask in sci.geo.cartography
or maybe sci.geo.satellite-nav .
Click to expand...
Thanks. I posted a similar enquiry simultaneously in the latter, and
it proved very fruitful. Now have conversion under control.

A couple of points for anyone on a similar quest who ends up in this
thread:

That spreadsheet I criticised proved to be basically sound after all.
After correspondence with its author, most of the problems I found
turned out to be down to my not following data entry syntax
rigorously, and he's fixing the minor remaining quirks.

By far the easiest method of two-way conversion I've found is the
Java-based method here
http://home.hiwaay.net/~taylorc/toolbox/geography/geoutm.html

--
Terry Pinnell
Hobbyist, West Sussex, UK
 
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