[R] How to change color of bar based on y value of y axis?

[Manish Gupta]

Hi, 


I m working on bar chart. 

*Input file:*
index	-5	1
index	-4	3
index	-3	2
index	-2	10
index	-1	7
index	0	2
index	1	1

barplot(t(as.matrix(i[3])), ylab= "value", main = "testdata", beside=TRUE,
col=c("burlywood1"),horiz=TRUE,cex.names=0.8,names.arg=t(as.matrix(i[,2])))

But i need to change the color of bar where value of  y = -3 dynamically.
How can i implement it. 

Regards http://r.789695.n4.nabble.com/file/n4566636/Screenshot.png 

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