Documentation

LogNormal
in package
Uses ArrayEnabled

Table of Contents

Properties

$arrayArgumentHelper  : ArrayArgumentHelper
$initializationNeeded  : bool

Methods

cumulative()  : array<string|int, mixed>|float|string
LOGNORMDIST.
distribution()  : array<string|int, mixed>|float|string
LOGNORM.DIST.
inverse()  : array<string|int, mixed>|float|string
LOGINV.
evaluateArrayArguments()  : array<string|int, mixed>
Handles array argument processing when the function accepts multiple arguments, and any of them can be an array argument.
evaluateArrayArgumentsIgnore()  : array<string|int, mixed>
Handles array argument processing when the function accepts multiple arguments, and any of them can be an array argument except for the one specified by ignore.
evaluateArrayArgumentsSubset()  : array<string|int, mixed>
Handles array argument processing when the function accepts multiple arguments, but only the first few (up to limit) can be an array arguments.
evaluateArrayArgumentsSubsetFrom()  : array<string|int, mixed>
Handles array argument processing when the function accepts multiple arguments, but only the last few (from start) can be an array arguments.
evaluateSingleArgumentArray()  : array<string|int, mixed>
Handles array argument processing when the function accepts a single argument that can be an array argument.
initialiseHelper()  : void
testFalse()  : bool

Properties

$initializationNeeded

private static bool $initializationNeeded = true

Methods

cumulative()

LOGNORMDIST.

public static cumulative(mixed $value, mixed $mean, mixed $stdDev) : array<string|int, mixed>|float|string

Returns the cumulative lognormal distribution of x, where ln(x) is normally distributed with parameters mean and standard_dev.

Parameters
$value : mixed

Float value for which we want the probability Or can be an array of values

$mean : mixed

Mean value as a float Or can be an array of values

$stdDev : mixed

Standard Deviation as a float Or can be an array of values

Return values
array<string|int, mixed>|float|string

The result, or a string containing an error If an array of numbers is passed as an argument, then the returned result will also be an array with the same dimensions

distribution()

LOGNORM.DIST.

public static distribution(mixed $value, mixed $mean, mixed $stdDev[, mixed $cumulative = false ]) : array<string|int, mixed>|float|string

Returns the lognormal distribution of x, where ln(x) is normally distributed with parameters mean and standard_dev.

Parameters
$value : mixed

Float value for which we want the probability Or can be an array of values

$mean : mixed

Mean value as a float Or can be an array of values

$stdDev : mixed

Standard Deviation as a float Or can be an array of values

$cumulative : mixed = false

Boolean value indicating if we want the cdf (true) or the pdf (false) Or can be an array of values

Return values
array<string|int, mixed>|float|string

The result, or a string containing an error If an array of numbers is passed as an argument, then the returned result will also be an array with the same dimensions

inverse()

LOGINV.

public static inverse(mixed $probability, mixed $mean, mixed $stdDev) : array<string|int, mixed>|float|string

Returns the inverse of the lognormal cumulative distribution

Parameters
$probability : mixed

Float probability for which we want the value Or can be an array of values

$mean : mixed

Mean Value as a float Or can be an array of values

$stdDev : mixed

Standard Deviation as a float Or can be an array of values

Tags
TODO

Try implementing P J Acklam's refinement algorithm for greater accuracy if I can get my head round the mathematics (as described at) http://home.online.no/~pjacklam/notes/invnorm/

Return values
array<string|int, mixed>|float|string

The result, or a string containing an error If an array of numbers is passed as an argument, then the returned result will also be an array with the same dimensions

evaluateArrayArguments()

Handles array argument processing when the function accepts multiple arguments, and any of them can be an array argument.

protected static evaluateArrayArguments(callable $method, mixed ...$arguments) : array<string|int, mixed>

Example use for: ROUND() or DATE().

Parameters
$method : callable
$arguments : mixed
Return values
array<string|int, mixed>

evaluateArrayArgumentsIgnore()

Handles array argument processing when the function accepts multiple arguments, and any of them can be an array argument except for the one specified by ignore.

protected static evaluateArrayArgumentsIgnore(callable $method, int $ignore, mixed ...$arguments) : array<string|int, mixed>

Example use for: HLOOKUP() and VLOOKUP(), where argument 1 is a matrix that needs to be treated as a database rather than as an array argument.

Parameters
$method : callable
$ignore : int
$arguments : mixed
Return values
array<string|int, mixed>

evaluateArrayArgumentsSubset()

Handles array argument processing when the function accepts multiple arguments, but only the first few (up to limit) can be an array arguments.

protected static evaluateArrayArgumentsSubset(callable $method, int $limit, mixed ...$arguments) : array<string|int, mixed>

Example use for: NETWORKDAYS() or CONCATENATE(), where the last argument is a matrix (or a series of values) that need to be treated as a such rather than as an array arguments.

Parameters
$method : callable
$limit : int
$arguments : mixed
Return values
array<string|int, mixed>

evaluateArrayArgumentsSubsetFrom()

Handles array argument processing when the function accepts multiple arguments, but only the last few (from start) can be an array arguments.

protected static evaluateArrayArgumentsSubsetFrom(callable $method, int $start, mixed ...$arguments) : array<string|int, mixed>

Example use for: Z.TEST() or INDEX(), where the first argument 1 is a matrix that needs to be treated as a dataset rather than as an array argument.

Parameters
$method : callable
$start : int
$arguments : mixed
Return values
array<string|int, mixed>

evaluateSingleArgumentArray()

Handles array argument processing when the function accepts a single argument that can be an array argument.

protected static evaluateSingleArgumentArray(callable $method, array<string|int, mixed> $values) : array<string|int, mixed>

Example use for: DAYOFMONTH() or FACT().

Parameters
$method : callable
$values : array<string|int, mixed>
Return values
array<string|int, mixed>

initialiseHelper()

private static initialiseHelper(array<string|int, mixed>|false $arguments) : void
Parameters
$arguments : array<string|int, mixed>|false

Can be changed to array for Php8.1+

testFalse()

private static testFalse(mixed $value) : bool
Parameters
$value : mixed
Return values
bool

        
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