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How to concatenate arrays in Julia
Gutha Vamsi KrishnaOverview
An array is a comma-separated, ordered collection of elements. In this shot, we'll learn how to concatenate arrays using Julia.
We can concatenate arrays in Julia using the following functions.
vcat: This concatenates along dimension1.hcat: This concatenates along dimension2.
Syntax
hcat(pass comma separated arrays) vcat(pass comma separated arrays)
Parameters
Both the functions will take arrays as parameters.
Return value
Both the functions will return a new array after concatenation.
Example
a = [1 2 3 4 5]
b = [6 7 8 9 10; 11 12 13 14 15]
println("Displaying vcat concatenation")
#concatenation along dimension 1
display(vcat(a,b))
c = [1; 2; 3; 4; 5]
d = [6 7; 8 9; 10 11; 12 13; 14 15]
println("\nDisplaying hcat concatenation")
#concatenation along dimension 2
display(hcat(c,d))Explanation
- Line 1–2: We declare and initialize two arrays,
aandb. - Line 5: We concatenate the arrays
aandbalong the dimension1using thevcatfunction and display the returned new array. - Line 7–8: We declare and initialize two arrays,
candd. - Line 11: We concatenate the arrays
canddalong the dimension2using thehcatfunction and display the returned new array.
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