LoopAnalyst (version 1.2-7)

make.clem: 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)

Value

A change in life expectancy matrix

Arguments

CM

A valid community matrix.

status

Switches on an element-by-element progress indicator when set to TRUE. Set to FALSE by default.

Author

Alexis Dinno ()

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/

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.

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. <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. <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)