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context("Kamada-Kawai layouts")
test_that("Kamada-Kawai layout generator works", {
library(igraph)
g <- make_ring(10)
l <- layout_with_kk(g, maxiter=50)
if (Sys.info()["sysname"] == "Darwin") {
expect_that(sum(l), equals(-1.13071769106689))
} else if (Sys.info()["sysname"] == "Linux" &&
Sys.info()["machine"] == "x86_64") {
expect_that(sum(l), equals(-6.77278645472984e-05))
} else if (Sys.info()["sysname"] == "Linux" &&
Sys.info()["machine"] == "i686") {
expect_that(sum(l), equals(0.914809637353466))
}
g <- make_star(30)
l <- layout_with_kk(g, maxiter=500)
if (Sys.info()["sysname"] == "Darwin") {
expect_that(sum(l), equals(-85.6883999492408))
} else if (Sys.info()["sysname"] == "Linux" &&
Sys.info()["machine"] == "x86_64") {
expect_that(sum(l), equals(-86.1405864709501))
} else if (Sys.info()["sysname"] == "Linux" &&
Sys.info()["machine"] == "i686") {
expect_that(sum(l), equals(-85.142223229617))
}
g <- make_ring(10)
E(g)$weight <- rep(1:2, length.out=ecount(g))
l <- layout_with_kk(g, maxiter=500)
if (Sys.info()["sysname"] == "Darwin") {
expect_that(sum(l), equals(1.61069099387368))
} else if (Sys.info()["sysname"] == "Linux" &&
Sys.info()["machine"] == "x86_64") {
expect_that(sum(l), equals(-1.83036635516248))
} else if (Sys.info()["sysname"] == "Linux" &&
Sys.info()["machine"] == "i686") {
expect_that(sum(l), equals(0.0631144692360025))
}
})
test_that("3D Kamada-Kawai layout generator works", {
library(igraph)
g <- make_star(30)
l <- layout_with_kk(g, maxiter=5000, dim=3)
expect_that(sum(l), equals(61.0559727551764))
})
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