Julia PyPlot无法创建二次函数

Question

我正在尝试使用PyPlot学习使用Julia绘制内容,并尝试绘制二次函数.它不喜欢我正在调整x.我尝试使用x**2和x*x,编译器也不接受它们.我应该用什么方格x？谢谢

代码@第7行:

x1 = linspace(0,4*pi, 500); y1 = x^2

错误:

LoadError: MethodError: `*` has no method matching *(::LinSpace{Float64},      
::LinSpace{Float64})
Closest candidates are:
*(::Any, ::Any, !Matched::Any, !Matched::Any...)
*{T}(!Matched::Bidiagonal{T}, ::AbstractArray{T,1})
*(!Matched::Number, ::AbstractArray{T,N})
...
in power_by_squaring at intfuncs.jl:80
in ^ at intfuncs.jl:108
in include_string at loading.jl:282
in include_string at C:\Users\User\.julia\v0.4\CodeTools\src\eval.jl:32
in anonymous at C:\Users\User\.julia\v0.4\Atom\src\eval.jl:84
in withpath at C:\Users\User\.julia\v0.4\Requires\src\require.jl:37
in withpath at C:\Users\User\.julia\v0.4\Atom\src\eval.jl:53
[inlined code] from C:\Users\User\.julia\v0.4\Atom\src\eval.jl:83
in anonymous at task.jl:58
while loading C:\Users\User\Desktop\Comp Sci\Class\plotTest, in expression     
starting on line 7

Answer 1

要对数组的每个元素求平方,请使用x.^2.