@@ -10,6 +10,7 @@ CHANGES in VERSION 2.9.3

 * `anno_barplot()`: allows to add numbers on top of bars.

 * `UpSet()`: axis labels are automatically formated for genomic coordinates.

 * `AnnotationFunction()`: add a new argument `cell_fun`.

+* When the dendrogram height is zero, the corresponding viewport has scale (0, 1).

 =========================

@@ -1389,6 +1389,7 @@ anno_barplot = function(x, baseline = 0, which = c("column", "row"), border = TR

 				if(!is.null(attr(value, "labels_format"))) {

 					txt = attr(value, "labels_format")(value[index])

 				}

+				numbers_rot = numbers_rot %% 360

 				if(numbers_rot == 0) {

 					grid.text(txt, x = seq_along(index), y = unit(baseline + height, "native") + numbers_offset, default.units = "native", gp = subset_gp(numbers_gp, index), just = c("bottom"))

 				} else {

@@ -363,6 +363,7 @@ setMethod(f = "draw_dend",

     if(is.null(max_height)) {

         max_height = dend_heights(dend)

     }

+    if(max_height == 0) max_height = 1

     if(side %in% c("left", "right")) {

         xscale = c(0, max_height)