slight README

README.md

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+# Souplesse
+
+_This readme describes what may someday be, not what is today_
+
+Reads a GPX file which you generated by cycling around, and tells you
+interesting(sic) things about it.
+
+The principle we aspire to is that the measurement is subsidary to the
+ride, not the purpose of the ride. The purpose of the ride is to enjoy
+cycling, or to see new places, or to get from A to B, and the purpose
+of Souplesse is to see if we can get any useful numbers out of the
+riding you were doing anyway without making you do more of it.
+
+So, the general idea is that given some ride data it can tell you how
+long/how often you spent at a given level of effort (e.g. heart rate),
+or output (power, speed, cadence, rate of ascent).
+
+## Canned views
+
+### ride view
+
+graph of (selected variables) / time, with buttons to select variables
+slider for threshold level
+all points above threshold are highlighted and interval times above
+ threshold shown
+zoom in/out on time range
+show the selected points on a map
+
+### calendar view
+
+note this will need some kind of server-side storage so that the
+system remembers all your gpx files
+
+shows dates that you rode
+for each ride, show time at effort
+some kind of slider for effort level
+
+
+## Query view
+
+Not yet decided if this is useful, something that allows graphs of
+arbitrary functions of properties (e.g. to look at power/cadence
+ratio, or ... some other weirdness)
+
+
+----
+
+_Do not look below this line_
+
+## WIP, Puzzles and TODO
+
+* [done] Pos can't include elevation if it's sometimes unknown
+* do we even need Track? will it ever be anything more than a collection
+ of Points?
+* need a real gpx file with namespace decls before we can parse power and stuff