writing_Julia_scripts.md

API for Julia scripts for use with LabVIEW

Script example

# script to be started from LabVIEW

using SomePackages

# doing some work

# defining user functions
function foo(;x, y)
    f = bar(x, y)
    return (; f=f)
end

function rndx(;n)
    r0 = rand(Int64)
    r1 = rand(Float32, n)
    r2 = rand(UInt8, n, n)
    return (; r0, bigarrs=(; r1, r2), )
end

fns = (; foo, rndx)

Explanations and Requirements

• User provided functions must accept (only) keyword arguments
• The returned value is a NamedTuple
• Data to be binary encoded (e.g. numeric arrays) are returned in a NamedTuple element called bigarrs, which is a NamedTuple by itself.
• The script assigns the list of functions (again, as a NamedTuple) to be passed to the Julia server to the variable fns.

For the case that the Julia server is not started by LV, e.g. if it runs on a different computer, see this example.

See also Examples page.