Check whether color specifications exists.
Function to check whether all specified colors are actual colors.
isColor(x, return.colors = FALSE)
x |
Vector of any of the three kinds of R color specifications,
i.e., either a color name (as listed by
|
return.colors |
Logical: logical values (FALSE, default) or returning colors (TRUE) |
Logical value (or colors)
Jacolien van Rij
Other Utility functions:
findAbsMin(),
find_n_neighbors(),
firstLetterCap(),
getArrowPos(),
getDec(),
getRange(),
getRatioCoords(),
get_palette(),
group_sort(),
inch2coords(),
list2str(),
move_n_point(),
orderBoxplot(),
se(),
sortGroups()
# correct color definitions:
isColor(c('#FF0000FF', '#00FF00FF', '#0000FFFF'))
isColor(c('red', 'steelblue', 'green3'))
isColor(c(1,7,28))
# mixtures are possible too:
isColor(c('#FF0000FF', 'red', 1, '#FF0000', rgb(.1,0,0)))
# return colors:
# note that 28 is converted to 4...
isColor(c(1,7,28), return.colors=TRUE)
isColor(c('#FF0000CC', 'red', 1, '#FF0000'), return.colors=TRUE)
# 4 incorrect colors, 1 correct:
test <- c('#FH0000', 3, '#FF00991', 'lavendel', '#AABBCCFFF')
isColor(test)
isColor(test, return.colors=TRUE)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.