add heatmap to a new track

add heatmap to a new track

add_heatmap_track(gr, mat, fill, border = NA, track = current_track() + 1, ...)

Arguments

gr	genomic regions, it can be a data frame or a GRanges object
mat	matrix in which rows correspond to intervals in gr
fill	a color mapping function which maps values to colors. Users can consider colorRamp2 to generate a color mapping function.
border	border of the grids in heatmap
track	which track the graphics will be added to. By default it is the next track. The value should only be a scalar.
...	other arguments passed to add_track

Value

No value is returned.

See also

add_rect_track, add_track

Examples

require(circlize)
#> Loading required package: circlize
#> ========================================
#> circlize version 0.4.8
#> CRAN page: https://cran.r-project.org/package=circlize
#> Github page: https://github.com/jokergoo/circlize
#> Documentation: http://jokergoo.github.io/circlize_book/book/
#> 
#> If you use it in published research, please cite:
#> Gu, Z. circlize implements and enhances circular visualization 
#>   in R. Bioinformatics 2014.
#> ========================================
bed = generateRandomBed(200)
col_fun = colorRamp2(c(-1, 0, 1), c("green", "black", "red"))
gtrellis_layout(nrow = 3, byrow = FALSE, track_axis = FALSE)
mat = matrix(rnorm(nrow(bed)*4), ncol = 4)
add_heatmap_track(bed, mat, fill = col_fun)