CODEWITHSUNDEEP
functiondrawingjuliagadfly
Dago
Dago

Reputation: 808

How to draw function returning elements of an array using gadfly

Hello i am trying to draw a function with Gadfly using Julia. I have no problem with function like this:

function F(x)
   return x+5
end

I use plot(F,1,10) and it works. Unfortunately for this function which is returning elements of an array it doesn't work:

function F(x)
   return myArray[x]
end

I would be grateful for telling me where it goes wrong.

Upvotes: 1

Views: 88

Answers (1)

Reza Afzalan
Reza Afzalan

Reputation: 5746

If you want to create an Index-Value plot of myArray elements I think the correct usage is:

plot(y=myArray,x=1:10)

and if you want to create a piecewise continuous plot, then declaration of f(x) should be something like this:

function F(x::Float64)
   global myArray
   return myArray[floor(Int,x)] # or myArray[round(Int,x)] or myArray[ceil(Int,x)]
end

Upvotes: 1

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