Class constructor
void
PolarAutoLap
(string $sport_alias)
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string
$sport_alias: Standard sport alias
Generate laps array from detailed HR data for every time or distance step, or for each slope change
array
generate_auto_laps
(string $lap_type, array $data, integer $interval, integer $distance, integer $rest_hr, integer $weight, integer $step_or_delta_h, integer $vma)
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string
$lap_type: Lap type in ('time','distance','altitude')
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array
$data: Heart rate data
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integer
$interval: Recording interval (seconds)
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integer
$distance: Real distance (meters, if speed measure)
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integer
$rest_hr: Rest heart rate of runner
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integer
$weight: Weight of runner (Kg), to compute energy if > 0
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integer
$step_or_delta_h: Lap step (sec*10 or meters) or delta H
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integer
$vma: VMA in km/h to compute physio energy
Generate laps array from Polar laps and interval training expression
Two elements can be separated or not by an implicit recovery. Example : 3000m + 3000m
One work or recovery element can consist in several Polar laps. There are 2 cases :
- Work element : Polar laps are not merged to keep intermediate times.
Example : 5000m whith a Polar lap every 1000m
- Recovery element : Polar laps are merged.
array
generate_interval_training
(array $polar_laps, array $intervals, integer $vma)
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array
$polar_laps: Polar laps from database
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array
$intervals: Array of work / recovery elements
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integer
$vma: VMA in km/h (from database or computed), used to predict minimum speeds for work and maximum speeds for recovery
Get maximum average speed for a given distance or duration
Use dichotomy algorithm, to find closest lower and upper pre-computed speeds, then linear approximation.
float
_get_max_speed
(integer $value, string $unit, array $std_int)
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integer
$value
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string
$unit: Unit for value in ('distance','duration'). Distance in meters, duration in seconds.
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array
$std_int: Pre-computed data for standard distances, each element is array('distance' => <meters>, 'duration' => seconds, 'speed' => km/h)
Merge several laps to one lap
One
_merge_laps
(array $laps)
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array
$laps: Array of laps to merge (>=1 elements)
Callback comparison function to sort cumulated laps by 'delta' value
integer
_sort_cum_cmp
(array $v1, array $v2)
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array
$v1: 1st value where [2] is delta value
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array
$v2: 2nd value where [2] is delta value