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# Test functions in filter.R
context("Filtering")
library(Matrix)
nr <- 100
nc <- 100
set.seed(1)
counts <- sample(0:30, replace = TRUE, size = 1e4)
counts <- matrix(counts, nrow = nr, ncol = nc)
rownames(counts) <- paste0("G", as.character(1:nr))
colnames(counts) <- paste0("C", as.character(1:nc))
sce <- create_SCE(counts)
test_that("Filtering works", {
n_test <- 10
sce_ts <- set_debris_test_set(sce, top_n = 1e4,
min_counts = 0, min_genes = 0,
fix_debris = colnames(counts)[1:(ncol(sce) - n_test)])
expect_equal(length(sce_ts@test_set), n_test)
expect_equal(length(intersect(sce_ts@test_set, sce_ts@bg_set)), 0)
sce_ts <- set_debris_test_set(sce, top_n=1e4,
min_counts=1500, min_genes=98)
dd <- sce_ts@droplet_data
testd <- rownames(dd)[dd$total_counts >= 1500 & dd$n_genes >= 98]
expect_equal(length(sce_ts@test_set), length(testd))
expect_equal(length(union(sce_ts@test_set, sce_ts@bg_set)), nc)
expect_equal(length(intersect(sce_ts@test_set, sce_ts@bg_set)), 0)
sce_ts <- set_cluster_set(sce_ts, cluster_n = 2)
dd <- sce_ts@droplet_data[sce_ts@test_set,,drop=FALSE]
mg <- dd$n_genes[order(dd$n_genes, decreasing=TRUE)][2]
top2 <- rownames(dd)[dd$n_genes >= mg]
expect_equal(sce_ts@cluster_set, top2)
sce_ts <- set_cluster_set(sce_ts, cluster_n = 1000)
expect_equal(sort(sce_ts@cluster_set), sort(sce_ts@test_set))
sce_ts <- filter_genes(sce_ts, 0)
expect_equal(sum(sce_ts@gene_data$exprsd), nr)
expect_error(filter_genes(sce_ts, 1e7))
})
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