Read actions indicator. More...

Inheritance diagram for core\analytics\indicator\read_actions:

Public Member Functions
	add_sample_data ($data)
	add_sample_data More...

	calculate ($sampleids, $samplesorigin, $starttime=false, $endtime=false, $existingcalculations=array())
	Calculates the indicator. More...

	clear_sample_data ()
	clear_sample_data More...

	fill_per_analysable_caches (\core_analytics\analysable $analysable)
	Hook to allow indicators to pre-fill data that is shared accross time range calculations. More...

	get_calculation_outcome ($value, $subtype=false)
	get_calculation_outcome More...

	get_display_value ($value, $subtype=false)
	get_display_value More...

	get_id ()
	The class id is the calculable class full qualified class name. More...

	save_calculation_info (\core_analytics\local\time_splitting\base $timesplitting, int $rangeindex)
	Stores in MUC the previously added data and it associates it to the provided $calculable. More...

	should_be_displayed ($value, $subtype)
	Show only the main feature. More...

Static Public Member Functions
static	get_feature_headers ()
	get_feature_headers More...

static	get_max_value ()
	Returns the maximum value an indicator calculation can return. More...

static	get_min_value ()
	Returns the minimum value an indicator calculation can return. More...

static	get_name ()
	Returns the name. More...

static	instance ()
	Returns an instance of the indicator. More...

static	required_sample_data ()
	required_sample_data More...

Public Attributes
const	MAX_VALUE = 1
	Max value an indicator can return.

const	MIN_VALUE = -1
	Min value an indicator can return.

const	OUTCOME_NEGATIVE = 3
	Negative calculation outcome.

const	OUTCOME_NEUTRAL = 0
	Neutral calculation outcome.

const	OUTCOME_OK = 2
	Positive calculation outcome.

const	OUTCOME_VERY_NEGATIVE = 4
	Very negative calculation outcome.

const	OUTCOME_VERY_POSITIVE = 1
	Very positive calculation outcome.

Protected Member Functions
	add_shared_calculation_info (int $sampleid, array $info)
	Adds info related to the current calculation for later use when generating insights. More...

	calculate_sample ($sampleid, $sampleorigin, $starttime=false, $endtime=false)
	calculate_sample More...

	classify_value ($value, $ranges)
	Classifies the provided value into the provided range according to the ranges predicates. More...

	get_time_range_weeks_number ($starttime, $endtime)
	Returns the number of weeks a time range contains. More...

	limit_value ($calculatedvalue)
	Limits the calculated value to the minimum and maximum values. More...

	retrieve ($elementname, $sampleid)
	Retrieve the specified element associated to $sampleid. More...

	to_features ($calculatedvalues)
	Converts the calculated values to a list of features for the dataset. More...

	validate_calculated_value ($calculatedvalue)
	Validates the calculated value. More...

Static Protected Member Functions
static	include_averages ()
	Set to false to avoid context features to be added as dataset features. More...

Protected Attributes
core_analytics calculation_info null	$calculationinfo = null

array[]	$sampledata = array()

Detailed Description

Read actions indicator.

Copyright: 2016 David Monllao http://www.davidmonllao.com

License: http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

Member Function Documentation

◆ add_sample_data()

core_analytics\calculable::add_sample_data ( $data )

inherited

add_sample_data

Parameters

array $data

Return values

void

◆ add_shared_calculation_info()

core_analytics\calculable::add_shared_calculation_info	(	int	$sampleid,
		array	$info
	)

finalprotectedinherited

Adds info related to the current calculation for later use when generating insights.

Note that the data in $info array is reused across multiple samples, if you want to add data just for this sample you can use the sample id as key.

Please, note that you should be careful with how much data you add here as it can kill the server memory.

Parameters

int	$sampleid	The sample id this data is associated with
array	$info	The data. Indexed by an id unique across the site. E.g. an activity id.

Return values

null

◆ calculate()

core_analytics\local\indicator\base::calculate	(	$sampleids,
		$samplesorigin,
		$starttime = `false`,
		$endtime = `false`,
		$existingcalculations = `array()`
	)

inherited

Calculates the indicator.

Returns an array of values which size matches $sampleids size.

Parameters

int[]	$sampleids
string	$samplesorigin
integer	$starttime	Limit the calculation to this timestart
integer	$endtime	Limit the calculation to this timeend
array	$existingcalculations	Existing calculations of this indicator, indexed by sampleid.

Return values

array [0] = [$sampleid => int[]|float[]], [1] = [$sampleid => int|float], [2] = [$sampleid => $sampleid]

◆ calculate_sample()

core\analytics\indicator\read_actions::calculate_sample	(	$sampleid,
		$sampleorigin,
		$starttime = `false`,
		$endtime = `false`
	)

protected

calculate_sample

Parameters

int	$sampleid
string	$sampleorigin
int	$starttime
int	$endtime

Return values

float

Reimplemented from core_analytics\local\indicator\base.

◆ classify_value()

core_analytics\calculable::classify_value	(	$value,
		$ranges
	)

protectedinherited

Classifies the provided value into the provided range according to the ranges predicates.

Use:

eq as 'equal'
ne as 'not equal'
lt as 'lower than'
le as 'lower or equal than'
gt as 'greater than'
ge as 'greater or equal than'

Exceptions

coding_exception

Parameters

int \| float	$value
array	$ranges	e.g. [ ['lt', 20], ['ge', 20] ]

Return values

float

◆ clear_sample_data()

core_analytics\calculable::clear_sample_data ( )

inherited

clear_sample_data

Return values

void

◆ fill_per_analysable_caches()

core_analytics\local\indicator\base::fill_per_analysable_caches ( \core_analytics\analysable $analysable )

inherited

Hook to allow indicators to pre-fill data that is shared accross time range calculations.

Useful to fill analysable-dependant data that does not depend on the time ranges. Use instance vars to cache data that can be re-used across samples calculations but changes between time ranges (indicator instances are reset between time ranges to avoid unexpected problems).

You are also responsible of emptying previous analysable caches.

Parameters

core_analytics\analysable $analysable

Return values

void

Reimplemented in core_analytics\local\indicator\community_of_inquiry_activity.

◆ get_calculation_outcome()

core_analytics\local\indicator\linear::get_calculation_outcome	(	$value,
		$subtype = `false`
	)

inherited

get_calculation_outcome

Parameters

float	$value
string	$subtype

Return values

int

Reimplemented from core_analytics\calculable.

◆ get_display_value()

core_analytics\local\indicator\linear::get_display_value	(	$value,
		$subtype = `false`
	)

inherited

get_display_value

Parameters

float	$value
string	$subtype

Return values

string

Reimplemented from core_analytics\calculable.

◆ get_feature_headers()

static core_analytics\local\indicator\linear::get_feature_headers ( )

staticinherited

get_feature_headers

Return values

array

◆ get_id()

core_analytics\calculable::get_id ( )

inherited

The class id is the calculable class full qualified class name.

Return values

string

◆ get_max_value()

static core_analytics\local\indicator\base::get_max_value ( )

staticinherited

Returns the maximum value an indicator calculation can return.

Return values

float

◆ get_min_value()

static core_analytics\local\indicator\base::get_min_value ( )

staticinherited

Returns the minimum value an indicator calculation can return.

Return values

float

◆ get_name()

static core\analytics\indicator\read_actions::get_name ( )

static

Returns the name.

If there is a corresponding '_help' string this will be shown as well.

Return values

lang_string

Reimplemented from core_analytics\calculable.

◆ get_time_range_weeks_number()

core_analytics\calculable::get_time_range_weeks_number	(	$starttime,
		$endtime
	)

protectedinherited

Returns the number of weeks a time range contains.

Useful for calculations that depend on the time range duration. Note that it returns a float, rounding the float may lead to inaccurate results.

Parameters

int	$starttime
int	$endtime

Return values

float

◆ include_averages()

static core_analytics\local\indicator\linear::include_averages ( )

staticprotectedinherited

Set to false to avoid context features to be added as dataset features.

Return values

bool

◆ instance()

static core_analytics\local\indicator\base::instance ( )

staticinherited

Returns an instance of the indicator.

Useful to reset cached data.

Return values

core_analytics

◆ limit_value()

core_analytics\calculable::limit_value ( $calculatedvalue )

protectedinherited

Limits the calculated value to the minimum and maximum values.

Parameters

float $calculatedvalue

Return values

float|null

◆ required_sample_data()

static core\analytics\indicator\read_actions::required_sample_data ( )

static

required_sample_data

Return values

string[]

Reimplemented from core_analytics\local\indicator\base.

◆ retrieve()

core_analytics\calculable::retrieve	(	$elementname,
		$sampleid
	)

protectedinherited

Retrieve the specified element associated to $sampleid.

Parameters

string	$elementname
int	$sampleid

Return values

stdClass|false An stdClass object or false if it can not be found.

◆ save_calculation_info()

core_analytics\calculable::save_calculation_info	(	\core_analytics\local\time_splitting\base	$timesplitting,
		int	$rangeindex
	)

finalinherited

Stores in MUC the previously added data and it associates it to the provided $calculable.

Flagged as final as we don't want people to extend this, it is likely to be moved to core_analytics\calculable

Parameters

core_analytics\local\time_splitting\base	$timesplitting
int	$rangeindex

Return values

null

◆ should_be_displayed()

core_analytics\local\indicator\linear::should_be_displayed	(	$value,
		$subtype
	)

inherited

Show only the main feature.

Parameters

float	$value
string	$subtype

Return values

bool

Reimplemented from core_analytics\local\indicator\base.

◆ to_features()

core_analytics\local\indicator\linear::to_features ( $calculatedvalues )

protectedinherited

Converts the calculated values to a list of features for the dataset.

Parameters

array $calculatedvalues

Return values

array

Reimplemented from core_analytics\local\indicator\base.

◆ validate_calculated_value()

core_analytics\local\indicator\base::validate_calculated_value ( $calculatedvalue )

protectedinherited

Validates the calculated value.

Exceptions

coding_exception

Parameters

float $calculatedvalue

Return values

true

Reimplemented in core_analytics\local\indicator\discrete.

The documentation for this class was generated from the following file:

lib/classes/analytics/indicator/read_actions.php

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Detailed Description

Member Function Documentation

◆ add_sample_data()

◆ add_shared_calculation_info()

◆ calculate()

◆ calculate_sample()

◆ classify_value()

◆ clear_sample_data()

◆ fill_per_analysable_caches()

◆ get_calculation_outcome()

◆ get_display_value()

◆ get_feature_headers()

◆ get_id()

◆ get_max_value()

◆ get_min_value()

◆ get_name()

◆ get_time_range_weeks_number()

◆ include_averages()

◆ instance()

◆ limit_value()

◆ required_sample_data()

◆ retrieve()

◆ save_calculation_info()

◆ should_be_displayed()

◆ to_features()

◆ validate_calculated_value()