Description Usage Arguments Details Value Methods Author(s) References See Also Examples

Object returned by `uncert`

calls.

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`x, object` |
An object of class uncert |

`digits` |
Number of digits to display in budget and (if present) distribution parameter lists.
Passed to |

`right` |
If TRUE, strings in uncertainty budget are right-justified.
This differs from the default in |

`...` |
Other parameters passed to |

`simplify` |
If |

`summary.uncert`

simply calls `print.uncert`

.

An object of class "uncert" contains:

- call
The matched call

- y
The calculated value (for function, expression or formula methods) or NA

- u.y
The combined standard uncertainty

- method
The uncertainty evaluation method used.

- budget
A data frame consisting of:

- x
`x`

(if supplied; otherwise a vector of NA's).- u
The standard uncertainties in input quantities (originally provided as

`u`

)- df
The degrees of freedom asscociated with

`u`

- c
Sensitivity coefficients either provided as

`c`

or (for the formula, function and expression methods) as calculated.- u.c
The product of

`u`

and`c`

. These are the contributions to the combined uncertainty for uncorrelated quantities.

- additional
Any relevant parameters other than those in $budget$x (typically addditional constants passed to function or expression methods)

- distrib
If available, a named list of the distributions associated with

`u`

. The list contains either root nams of distribution functions (e.g`"norm"`

or function definitions.- distrib.pars
If available, a list of lists of parameters describing the distributions associated with

`u`

.- cov
The covariance matrix used

- cor
The correlation matrix used

- cov.xy
A data frame of covariances between x and y. Row names correspond to the correlation method used. For all uncertainty evaluation methods but MC, the only correlation calculation is "theoretical"; for MC row names include all methods supported by stats::cor at the time the object was created.

- cor.xy
A data frame of correlations between x and y, of the same form as

`cov.xy`

- deriv
For the formula and expression methods, the result of a call to

`deriv`

; an expression which evaluates to the value with attributes corresponding to the derivatives (that is, an expression which can be evaluated to give the value and sensitivity coefficients)

`print`

and `summary`

methods invisibly return the original object.

The print method provides a formatted printout of the object. By default,

`simplify=TRUE`

; this displays a shortened listing. Columns in`$budget`

are suppressed if all NA (typically df when not specified).- summary
summary is currently an alias for the print method.

S. L. R. Ellison s.ellison@lgc.co.uk

None.

`uncert`

, especially for calculation methods;
`plot.uncert`

, `uncertMC-class`

,
`print.data.frame`

, `format`

.

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