I'm trying to build a heatmap with ggplot2 and plotly. I found a corner case where the value for one of the heatmap rows is only one. In that case, the ggplot output is as expected, but when you render it with ggplotly, this value turns gray. See the code and snapshots below. It seems like a bug to me.
library(ggplot2)
library(plotly)
theme_set(theme_gray())
PROBS <- c(50, 60, 70, 80, 90, 95, 100)
gradientPalette <- colorRampPalette(c("#5cd400", "#fff100", "#d4000f"),
bias = .25)
set.seed(1)
data <- data.frame(
x = rep(seq(1, 100), 2),
y = c(rep("V1", 100), rep("V2", 100)),
z = c(sample(PROBS, 100, replace = T, prob = 1.01 - PROBS/100), rep(50, 100)),
group = c(rep("G1", 100), rep("G2", 100))
)
p <- data %>%
ggplot(aes(x, y)) +
geom_tile(aes(fill = z)) +
facet_wrap(~ group, nrow = 2, scales = "free_y") +
scale_fill_gradientn(name = NULL,
colours = gradientPalette(length(PROBS) + 1),
limits = c(20, 100),
breaks = PROBS*100,
labels = PROBS*100)
p
ggplotly(p)
ggplot output
ggplotly faulty output
Session info.
R version 4.1.3 (2022-03-10)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 20.04.4 LTS
Matrix products: default
BLAS: /usr/lib/x86_64-linux-gnu/openblas-pthread/libblas.so.3
LAPACK: /usr/lib/x86_64-linux-gnu/openblas-pthread/liblapack.so.3
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 LC_MONETARY=en_US.UTF-8
[6] LC_MESSAGES=en_US.UTF-8 LC_PAPER=en_US.UTF-8 LC_NAME=C LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices datasets utils methods base
other attached packages:
[1] plotly_4.9.4.1 ggplot2_3.3.5
loaded via a namespace (and not attached):
[1] pillar_1.6.1 compiler_4.1.3 tools_4.1.3 digest_0.6.27 jsonlite_1.7.2 lifecycle_1.0.0 tibble_3.1.2
[8] gtable_0.3.0 viridisLite_0.4.0 pkgconfig_2.0.3 rlang_0.4.11 crosstalk_1.1.1 yaml_2.2.1 withr_2.4.2
[15] dplyr_1.0.7 httr_1.4.2 generics_0.1.0 vctrs_0.3.8 htmlwidgets_1.5.3 grid_4.1.3 tidyselect_1.1.1
[22] glue_1.4.2 data.table_1.14.2 R6_2.5.0 fansi_0.5.0 purrr_0.3.4 tidyr_1.1.3 farver_2.1.0
[29] magrittr_2.0.1 scales_1.1.1 ellipsis_0.3.2 htmltools_0.5.1.1 colorspace_2.0-2 renv_0.13.2 labeling_0.4.2
[36] utf8_1.2.1 lazyeval_0.2.2 munsell_0.5.0 crayon_1.4.1