[Talk-GB] (OT) Depressions, and projections

[Phil Endecott]

Dear All,

Two slight off-topic questions for UK map enthusiasts:

(1) Can you think of any depressions in Britain?  I.e. places where the 
contour lines on the map would wind the "wrong way"?  I ask because I 
recently noticed that the OS OpenData contour data is wrong around 
Princes Street Gardens in Edinburgh.  It looks as if the contour lines 
are in the right places but their heights have been mis-labelled, as if 
the height labels had been added automatically by an algorithm that 
didn't expect depressions.  The gridded data is consistent with the 
incorrect labelling, probably confirming that the gridded data is 
derived from the contours, rather than vice-versa.  The only other 
depressions that I can think of are the sunken areas in the Fens.  Any 
other suggestions?

(2) Have a look at today's XKCD ( http://xkcd.com/977/ ) and tell us 
what your favourite map projection is :-)


Cheers,  Phil.