hello brmlab!
http://www.citylab.com/commute/2014/02/woman-took-picture-every-prague-subwa... "pictures of 56 (out of 57) stations - in just 13 hours"
greetings from berlin Sven
Interesting problem. In what order, when to start and how to travel between stations so that you take pictures of all of them (standing on platform, not from train) in shortest amount of time? (For example one can imagine that taking pictures of three stations 1-2-3 starting at 1 it would be faster going by one train to 3 and one back to 2 than going to 2 and then waiting for next one to 3.)
Stevko
On Tue, Jun 10, 2014 at 02:44:31AM +0200, Sven Guckes wrote:
hello brmlab!
http://www.citylab.com/commute/2014/02/woman-took-picture-every-prague-subwa... "pictures of 56 (out of 57) stations - in just 13 hours"
greetings from berlin Sven _______________________________________________ Brmlab mailing list Brmlab@brmlab.cz http://brmlab.cz/cgi-bin/mailman/listinfo/brmlab
If you are quick enaugh, you can take a photo without waiting for next train. C has smallest interval of about 90s (A and B around 180s). But we have to consider partial tracks (ie some trains ends at Kacerov instead of Haje).
sachy
---------- Původní zpráva ---------- Od: Stevko stevko@stevko.info Komu: Brmlab: Hackerspace Prague (main discussion) brmlab@brmlab.cz Datum: 10. 6. 2014 10:00:28 Předmět: Re: [Brmlab] A+B+C subway photos
"Interesting problem. In what order, when to start and how to travel between stations so that you take pictures of all of them (standing on platform, not from train) in shortest amount of time? (For example one can imagine that taking pictures of three stations 1-2-3 starting at 1 it would be faster going by one train to 3 and one back to 2 than going to 2 and then waiting for next one to 3.)
Stevko
On Tue, Jun 10, 2014 at 02:44:31AM +0200, Sven Guckes wrote:
hello brmlab!
http://www.citylab.com/commute/2014/02/woman-took-picture-every-prague-
subway-station-just-one-day/8395/
"pictures of 56 (out of 57) stations - in just 13 hours"
greetings from berlin Sven _______________________________________________ Brmlab mailing list Brmlab@brmlab.cz http://brmlab.cz/cgi-bin/mailman/listinfo/brmlab
http://jrportal.dpp.cz/jrportal/LineList.aspx?mi=3&t=1 https://en.wikipedia.org/wiki/Shortest_path
On 10.6.2014 10:00, Stevko wrote:
Interesting problem. In what order, when to start and how to travel between stations so that you take pictures of all of them (standing on platform, not from train) in shortest amount of time? (For example one can imagine that taking pictures of three stations 1-2-3 starting at 1 it would be faster going by one train to 3 and one back to 2 than going to 2 and then waiting for next one to 3.)
Stevko
On Tue, Jun 10, 2014 at 02:44:31AM +0200, Sven Guckes wrote:
hello brmlab!
http://www.citylab.com/commute/2014/02/woman-took-picture-every-prague-subwa... "pictures of 56 (out of 57) stations - in just 13 hours"
greetings from berlin Sven _______________________________________________ Brmlab mailing list Brmlab@brmlab.cz http://brmlab.cz/cgi-bin/mailman/listinfo/brmlab
On Tue, Jun 10, 2014 at 03:16:12PM +0200, Jan Hrach wrote:
http://jrportal.dpp.cz/jrportal/LineList.aspx?mi=3&t=1 https://en.wikipedia.org/wiki/Shortest_path
It sounds a little more like TSP (visit every station), but still not exactly (we allow more than visit in a station, although it might be the case it is never on the shortest path). How would one weight edges? Or what would be vertices in the graph (maybe pairs: station and time when it is visited ). But it still does not look like shortest path. Do we allow other transport than metro (might help when going from one end station to other).
Stevko
On 10.6.2014 10:00, Stevko wrote:
Interesting problem. In what order, when to start and how to travel between stations so that you take pictures of all of them (standing on platform, not from train) in shortest amount of time? (For example one can imagine that taking pictures of three stations 1-2-3 starting at 1 it would be faster going by one train to 3 and one back to 2 than going to 2 and then waiting for next one to 3.)
Stevko
On Tue, Jun 10, 2014 at 02:44:31AM +0200, Sven Guckes wrote:
hello brmlab!
http://www.citylab.com/commute/2014/02/woman-took-picture-every-prague-subwa... "pictures of 56 (out of 57) stations - in just 13 hours"
greetings from berlin Sven _______________________________________________ Brmlab mailing list Brmlab@brmlab.cz http://brmlab.cz/cgi-bin/mailman/listinfo/brmlab
-- Jan Hrach, http://jenda.hrach.eu/ GPG CD98 5440 4372 0C6D 164D A24D F019 2F8E 6527 282E
Brmlab mailing list Brmlab@brmlab.cz http://brmlab.cz/cgi-bin/mailman/listinfo/brmlab
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Jan Hrach -
sachy＠s0c4.net -
Stevko -
Sven Guckes