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Generate a Vector of specified length with each element as a unique color on RG scale in RGB spectrum in R Language – terrain.colors() Function
  • Last Updated : 01 Jul, 2020

terrain.colors() function in R Language is used to generate a Vector of specified length with each element as a unique color on RG scale in RGB spectrum. This function also returns the hexadecimal code of the colours available. This hexadecimal code is of eight digits. This is because the last two digits specify the level of transparency (where FF is opaque and 00 is transparent).

Syntax: terrain.colors(n)

Parameters:
n: desired length of the returned color vector

Example 1:

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# R program to illustrate
# terrain.colors function
  
# Calling terrain.colors() function
terrain.colors(2)
terrain.colors(4)
terrain.colors(6)

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Output:

[1] "#00A600FF" "#F2F2F2FF"
[1] "#00A600FF" "#E6E600FF" "#ECB176FF" "#F2F2F2FF"
[1] "#00A600FF" "#63C600FF" "#E6E600FF" "#EAB64EFF" "#EEB99FFF" "#F2F2F2FF"

Example 2:

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# R program to illustrate
# terrain.colors function
  
# Using terrain.colors() function to
# plot 6 different color
barplot(1:6, col = terrain.colors(6))

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Output:
terrain.colors()

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