Description Usage Format Details Source References Examples
Data from the 2013 Calaveras Jumping Frog Jubilee.
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An object of class tbl_df
(inherits from tbl
, data.frame
) with 3272 rows and 15 columns.
day The day of the contest. Day 3 was divided into morning (labeled 3) and the finals (3.5)
frog_type factor. "rental" = fairgoers paid to rent a frog from a common pool to compete, "individual" is a person who brought their own frog, "pro" is a frog run by an organized "professional" team. The type of the remaining frogs is "unknown".
distance Jump Distance (cm) - the measured jump distance, as described in the paper. Maybe be zero for jumps 2 and 3 if the frog only jumped once.
jump_n The first, second, third etc. jump of a sequence. Note that jockeys ceased pursuing the frog after the 3rd jump, though frogs sometimes jumped more.
distance_rel The distance of each jump divided by the 1st (to examine fatigue effects)
distance_3 The linear distance from the starting point to the end of the 3rd jump, which is the metric used by the contest, calculated from our data. Only present if 3 or more jumps in a sequence occurred
distance_3_off The 3-jump distance measurement announced by the "stickmen" judging the contest. -1 was not announced or could not be heard clearly on the audio.
duration The duration (s) of the jump determined by number of frames
angle_00, angle_01, angle_11 and velocity_00, velocity_01, velocity_11 Calculated jump angle and velocity as described in the paper. Because jump duration could only be measured in the integer number of video frames, the variables reflect the angles and velocities for three adjacent frames (JB: I'm not sure I understand the annotation here – CHECK WITH ASTLEY).
http://jeb.biologists.org/content/216/21/3947
Astley, H. C., Abbott, E. M., Azizi, E., Marsh, R. L., and Roberts, T. J. (2013) Chasing maximal performance: a cautionary tale from the celebrated jumping frogs of Calaveras County, Journal of Experimental Biology 216, 3947–3953. http://dx.doi.org/10.1242/jeb.090357
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