牛Julia在朱莉娅薄荷

Question

I recently installed Mint OS on my system and try to use Julia's Gadfly library. On a freshly installed Julia command line (I've installed it via the recommended repositories in Julia's documentation), I installed Gadfly by typing: Pkg.add("Gadfly") . Everything seemed to work.

By invoking using Gadfly the prompt shows the following messages:

Warning: could not import Base.foldl into NumericExtensions
Warning: could not import Base.foldr into NumericExtensions
Warning: could not import Base.sum! into NumericExtensions
Warning: could not import Base.maximum! into NumericExtensions
Warning: could not import Base.minimum! into NumericExtensions
Warning: could not import StatsBase.bandwidth into Stat
Warning: could not import StatsBase.kde into Stat

I've tried to make a plot using plot(x=rand(10),y=rand(10)) . All I see is the is the prompt showing Plot(...) . My questions regarding this are:

• What does this mean?
• Did I do something wrong?
• How can I fix this?

Answer 1

You need to draw the plot on a backend. For instance:

myplot = plot(x=rand(10),y=rand(10))
draw(PNG("myplot.png", 4inch, 3inch), myplot)

This link has more examples.