albert: Erodium paularense data and model.

In stremo: Functions to help the process of learning structural equation modelling

Description

Determinants of seed production in plants of Erodium paularense in rock and in lithosol.

Usage

  data(albert)
  albert.litho.cov
  albert.rock.cov
  albert.model

Format

Two covariance matrices with the number of observations as an attribute and a character vector with the model specification.

Note

Models used are in page 1737. Correlation matrices are in Appendix A. 107 observations.

Source

Article:

http://www.esajournals.org/doi/abs/10.1890/0012-9658%282001%29082%5B1734%3AFRSONE%5D2.0.CO%3B2

Appendix:

http://www.esapubs.org/archive/ecol/E082/020/

References

Albert MJ, Escudero A, and Iriondo JM. 2001. Female reproductive success of narrow endemic Erodium paularense in contrast to microhabitats. Ecology 82: 1734-1747.

Examples

## Not run: 
data(albert)
cat(albert.model)
albert.rock.fit <- sem(albert.model, sample.cov = albert.rock.cov,
                       sample.nobs = 107)
albert.litho.fit <- sem(albert.model, sample.cov = albert.litho.cov,
                        sample.nobs = 107)
summary(albert.rock.fit, standardized = TRUE)
summary(albert.litho.fit, standardized = TRUE)

## End(Not run)

stremo documentation built on Jan. 15, 2017, 7:33 p.m.