make.clem: Compute the Change in Life Expectancy Matrix

In LoopAnalyst: A Collection of Tools to Conduct Levins' Loop Analysis

Compute the Change in Life Expectancy Matrix

Description

Validates a community matrix and computes its associated change in life expectancy matrix.

Usage

make.clem(CM, status=FALSE)

Arguments

CM	A valid community matrix.
status	Switches on an element-by-element progress indicator when set to TRUE. Set to FALSE by default.

Details

The supplied matrix is validated as a community matrix, and a table of predicted changes in life expectancy (i.e. the inverse of turnover) given a press perturbation is computed. Diagonal elements can differ for births and deaths, and these predictions, in that order, are separated by a comma.

Value

A change in life expectancy matrix

Author(s)

Alexis Dinno ([e-mail])

Please contact me with any questions, bug reports or suggestions for improvement. Fixing bugs will be facilitated by sending along:

[1]	a copy of your relevant R data file (de-labeled or anonymized is fine),
[2]	a copy of the command syntax used, and
[3]	a copy of the exact output of the command.

https://alexisdinno.com/LoopAnalyst/

References

Dambacher, J. M., R. Levins and P. A. Rossignol. (2005) Life expectancy change in perturbed communities: Derivation and qualitative analysis. Mathematical Biosciences 197,1–14. <\Sexpr[results=rd]{tools:::Rd_expr_doi("10.1016/j.mbs.2005.06.001")}>.

Puccia, C. J. and Levins, R. (1986) Qualitative Modeling of Complex Systems: An Introduction to Loop Analysis and Time Averaging. Cambridge: Harvard University Press. <\Sexpr[results=rd]{tools:::Rd_expr_doi("10.4159/harvard.9780674435070")}>.

See Also

imake.cm,make.cem.

Examples

## compute change in life expectancy matrix
data(cm.DLR)
make.clem(cm.DLR)

LoopAnalyst documentation built on June 22, 2024, 11:59 a.m.