Created
August 26, 2015 21:57
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Bivariate heritability greater than 1
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| n <- 1000 | |
| # cor_g and cor_e both positive | |
| g <- rnorm(n) | |
| e <- rnorm(n) * 0.5 | |
| g1 <- g + rnorm(n) | |
| g2 <- g + rnorm(n) | |
| cor(g1,g2) | |
| e1 <- e + rnorm(n) | |
| e2 <- e + rnorm(n) | |
| cor(e1,e2) | |
| y1 <- g1 + e1 | |
| y2 <- g2 + e2 | |
| cor(y1,y2) | |
| cor(g1, g2) * cor(g1, y1) * cor(g2, y2) / cor(y1,y2) | |
| # cor_g positive, cor_e negative | |
| g <- rnorm(n) | |
| e <- rnorm(n) * 0.5 | |
| g1 <- g + rnorm(n) | |
| g2 <- g + rnorm(n) | |
| cor(g1,g2) | |
| e1 <- -e + rnorm(n) | |
| e2 <- e + rnorm(n) | |
| cor(e1,e2) | |
| y1 <- g1 + e1 | |
| y2 <- g2 + e2 | |
| cor(y1,y2) | |
| cor(g1, g2) * cor(g1, y1) * cor(g2, y2) / cor(y1,y2) |
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