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GPX Files - page 01
Load ACW route onto your GPS Device

Note: To read a gpx file you may be able to just left-click to see code text in a full browser window.
 
 To download a gpx file just right-click then choose Save target as  or  Save as or Save Link as or  Download or "whatever your Computer/Device or Browser uses", choose where to file it then transfer to your navigation device.  If needed convert the format to best match for your device.

Item 1 below is covers the 40-mile route in the Green Book. 

Item 2 is a link to a separate page covering all the walks in the "21-Walks Book plus" book + a few others not in either printed book.

Some older files to different formats are shown in Item 3 or more in table below:

Item FileName & link for download File size & format Notes
1

ACW-40-miles.gpx

70 KB

<trk>

As item 3 but Mar-2018 update
2 21 Circular Walks
GPX Files - page 02

 

1.3MB in total
<trk>

Link takes you to a separate table with links to individual files for each map, and notes as needed.
 
Below here are older files with differing formats &/or content, plus the odd new one not yet checked:
3

ACW-40-miles-2014.gpx

77 KB

<trk>

As item 4 but in "<trk> <trkseg> with lots of
<trkpt>" format.  Derived from hiking.lonvia resulting in 1425 points but no more useful detail (the extra points are mostly because the OSM map used on Lonvia uses points for other T junctions, start & end of a bridge, etc.)
4 ACW-40miles.gpx

54 KB

<rte>

The ACW 40-mile 2012 route as one path including all 18 maps from the "Green Book" as a single route.  Updated version for 2012 with only 958 points (older versions were over 2000, then 1295, then progressively reducing to current size.)  Format is in "<rte> with lots of <rtept>" structure. 
5 ACW+CW+etc.gpx 

471 KB

<rte>

The Bing Map paths all in one file, created in 2012 from Bing. Includes ACW as 18 "Maps", All 21 Circular walks as segments linking to ACW, plus many smaller features.
6 ACW+CW+etc_2014.gpx

<rte>

checked but found not valid.  Link and file deleted
7

ACW-40miles_trk-lonvia.gpx

63 KB

<trk>

 As item 1, but saved in 2012
8 ACW-40miles_trk-Sporttracks.gpx

 

<trk>

As 6, but derived by David using lonvia to make it suitable for his Garmin (coming soon)
9

 

   
10 ACW-40miles+labels.gpx

 57 KB

<rte>

As 3, but with some key points manually "named" with a label.  Currently shows start points for most Green Book maps 1 to 18, and some of Check Points 1 to 7.  Is such a gpx file useful?

Current Status

After a number of requests over recent years for such files, we have at last made a useful attempt, and in 2015 expanded and updated all the data.  They have been tested in the field by two "volunteers" when doing the 40-mile Challenge on Sunday 17th April. 

They have now been updated.  All are invited to test the new files in practice for the Apr-2015 event!

Those wishing to try them on their PC might like to load them into Google Earth, or just open them in notepad?

Detail

To follow, including how they were created, and discussion on content.

As a first draft, back in 2010, I reproduce below the contents of an email I sent to one of our users (who has a Garmin/Sporttracks3 set-up which needs <rte>  format):

1. Your File

Soon after receiving it I loaded it into Google Earth, and found it faithfully reproduced all the points exactly as in my file you based it on. A bit later I opened it in Notepad and found that the big differences were:
  • Your files are based on a <trk> <trkseg> with lots of
    <trkpt lat="xxx" lon="xxx"> <ele>eeee</ele> <time>ttttt</time> </trkpt>
  • My files are based on a <rte> with lots of
    <rtept lat="xxx" lon="xxx" />
Is this the feature which makes it work in your Garmin/Sporttracks setup?
 

2. OSM & Lonvia Hiking

I had used my original file to create much of the the route on OSM, and viewing this in Waymarking Trails: Hiking Maps  I wondered if this was a good route for preparing gpx files. The resultant gpx files are the same basic format as yours, but without the <ele> & <time> tags. However my biggest problem of using that method was that it increases the number of points due to extra points where a junction to another path, a change to embankment, cutting, bridge start, bridge end, etc is added to the basic OSM source data. It also started and finished in Church Lane for some reason!
 

3. Updates of ACW route, and how shown on Bing Map

A significant number of minor changes have been made to the Bing map since the base version for the gpx file you used was created. These included :
  • "Corrections" to make the route more accurate due to comparisons with gpx files recorded by a few users on 2011 Challenge, reports of errors by users, etc.
  • For 2012 Challenge we will be using the Connect2Kenilwoth new bridge and route across Kenilworth Common. This has now been added to the Bing and OSM maps.
  • "Optimisations" to reduce the total number of points without reducing the map as an adequately accurate representation of the path. This helps to speed use of the Bing Map, but more importantly reduces the size of the gpx file - a significant request from many who attempted to use it.  My original GPX file had over 2000 points, reduced to 1295 on the version you used. It is now down to 959, even after adding a detailed representation of the K2K path.

4. What should be the requirements for a gpx file?

Many variables are involved. A few I note are:
  1. <trk> or <rte> or <???> structure?
  2. Header data - are there any "rules" so all can use it?
  3. Number of points maximum.? ACW can't be represented by much less than 1000, but one user believes his device has a specified limit of 500, but it worked with the 650 odd some utility had reduced it to (BUT it seemed to have reduced by missing out about every other point, so in some places was potentially useless as a guide of which way to go!).
  4. Size of file. This could logically be as significant a limitation as number of points. Any guidance?
  5. Any naming of points recommended? The first attempt I created included naming of Start, Start of each of the 17 other maps, names of the 7 Check Points. This would seem useful (or maybe essential if some wish to do the challenge without using the Green Book!). It also made a very attractive Google Earth picture!
  6. Other variables?
  7. Reference Guides already available? I have so far failed to find any - who should I ask?

 

Can anyone else help?  Paragraphs below discuss further. 
All please read and offer advise!
 

5. Short Term Proposals

I suggest for "immediate" actions:
  • I have published my current 1520 point <rte> version (Mar-2015)
  • If you could convert this to your <trk> version for 40-mile route, I will publish that as well
     
  • Better still, tell me how to covert files so I can tell others, and maybe convert a full set of mine to the most popular format?
I will also add appropriate notes, and maybe much of above in the "Details" at the end, PLUS make the gpx news item a permanently linked page on the website!

 

6. Longer Term Proposals

In the medium term, if you let me know how to do the conversion, I will publish any future updates in both versions.
 
In the longer term, I hope to determine a more robust process, including giving advice to users! This will include searching for Sporttracks to see if this educates me on another little point.
 
I might even buy a GPS device so I can get practical experience! I have been waiting till a full system is available on a SmartPhone, so I can have all the goodies in one device - it's bound to arrive soon, but maybe not this Xmas?
 
Update Sep-2013: 
  1. My wife had a Nexus 7 Tablet for a Xmas present in 2012 - I set it up for all the features she required, but also added the "GPS Essentials" app.  This works superbly as a device for recording tracks, which can be exported as gpx files and viewed in Google Earth.  I've used it to checkout paths and update my maps - but it adds yet another variant of GPS Format.
     
  2. I downloaded to my PC an application GPSBabel .  This supports about 180 formats!  ... plus some 17 Filters to choose sub-sets of fields, plus lots of Tables & Examples.  As well as reforming the format, GPSBabel can do useful things like reducing the number of points in clever ways which make it a lot lower number of points but virtually the same accuracy.  I did a quick test, but still intend to explore more later.
     
  3. During the last few weeks of Feb-2013 I updated all ACW maps with detailed route changes to be included in the Green Book for Challenge 2013, and aligning all paths to the newer and more accurate Bing aerial maps recently published.  These maps (available at all zoom levels except the largest scale) also bring Bing and Google maps in line with each other for accuracy, so GPX files loaded from or to either give virtual identical positioning.
     
  4. I will use the data from 3 to update above gpx files soon.
     
  5. Any further input on "best" format to publish would be welcome?
     

Update Feb-2014

Updated lonvia files added, incorporating all changes in the Feb-2014 Green Book, plus significant changes to some circular walks (especially CW14).

Any further input on "best" format to publish would stll be very welcome?  ... preferably with advice on how to produce that format &/or help to do so !

Update Mar-2015

Nothing new on technology used, but all data updated and more accurate.

Update Mar-2016

Nothing new on technology used, and no gpx data needed updating.  I have however downloaded the latest version of GPSBabel which works with Windows 10 and has even more features to explore - I must find time, but would also like to hear from users!

Peter Page - email: Webmaster@acoventryway.or.uk 


   


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