[R] Barchart reorder

[Kang Min]

Hi fellow R users,

I have a dataset that looks something like this.

species	class 	abundance
K	1	592
K	2	288
G	1	254
G	2	239
C	2	173
D	2	123
E	3	89
F	2	87
B	2	86
H	2	82
I	1	79
J	2	76
B	1	73
D	3	72
A	2	62
L	2	58

I want to plot a stacked barchart. species is the x-axis, abundance is
y-axis, and class will appear as the stacks in different colours. I
need the species to be displayed in descending order of abundance,
meaning species K on the left side of the graph to species L on the
right.

I've read other posts here that recommended the function reorder,
which I've used but species K appears on the right side of the graph
instead.

barchart(table$abundance ~ reorder(table$species, table$abundance),
	   groups = table$class, stack = T, scales = list(x = list(draw =
F)),
	   auto.key = list(adj = 1))

Is there anything wrong with my code?

Thanks.
Kang Min