[Expo-tech] slippy map & prospecting - proposed deletion

[Philip Sargent [Gmail]]

Since Wookey's 'slippy map'
http://expo.survex.com/map/map.html
is working:
 -  yellow spots for entrances (mouse-over to see entrance name) from
essentials2019.gpx
 -  green lines for  - kataster boundaries and 
                     - for GPS tracks of main walking paths

*I propose to entirely delete* AERW's 'prospecting map' code. 
 (about 220 lines of complicated rescaling numbers)

which, very slowly, used to overlap entrance labels on top of
http://expo.survex.com/expofiles/location_maps/pguidemap.jpg  - which was
the best we had 20 years ago,
but is horrible by today's standards. 

[The deleted code will still be in the version control system of course.]

Wookey's map may not be perfect, but it's already better than AERW's code -
which is semi-moribund due to software library update glitches (I just spent
far too long trying to fix it).

This gorgeous 2015 map could do with an update ? Who did that ? And where
did the contour map come from ?
http://expo.survex.com/expofiles/location_maps/Expo%202015%20Poster%20Overvi
ewNorth.pdf

see current maps on file:
http://expo.survex.com/expofiles/location_maps/ 


The text Prospecting Guide still 'works' fine on the website,
http://expo.survex.com/prospecting_guide/  and the content is 'current' as
it comes directly from the latest data we have on record. But I am afraid
that our QM data hasn't been updated as often as it should be..