# Omniscape tutorial Error

**URL:** <https://discourse.julialang.org/t/omniscape-tutorial-error/93522>\
**Category:** New to Julia\
**Created:** [January 25, 2023, 5:47pm UTC](https://discourse.julialang.org/t/omniscape-tutorial-error/93522 "2023-01-25T17:47:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![anayana](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/anayana/32/46233_2.png) [@anayana](https://discourse.julialang.org/u/anayana)\
**Post date:** [January 25, 2023, 5:47pm UTC](https://discourse.julialang.org/t/omniscape-tutorial-error/93522/1 "2023-01-25T17:47:47Z")

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Hallo,

I do my first steps in Julia and try to reproduce the results of following tutorial:  
[https://docs.circuitscape.org/Omniscape.jl/stable/examples/#Forest-connectivity-in-central-Maryland](https://docs.circuitscape.org/Omniscape.jl/stable/examples/#Forest-connectivity-in-central-Maryland)

When I try to run Omniscape:

> currmap, flow\_pot, norm\_current = run\_omniscape(…

it occurs following error message:

> ERROR: TypeError: in keyword argument reclass\_table, expected Array{Union{Missing, T}, 2} where T\<:Number, got a value of type Vector{Union{Missing, Float64}}  
> Stacktrace:  
> [1] top-level scope  
> @ REPL[10]:1

How to solve this error?

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<div class="post-metadata">

**Author:** ![GimbalLock](https://avatars.discourse-cdn.com/v4/letter/g/f17d59/32.png) [@GimbalLock](https://discourse.julialang.org/u/GimbalLock)\
**Post date:** [August 3, 2026, 8:42am UTC](https://discourse.julialang.org/t/omniscape-tutorial-error/93522/2 "2026-08-03T08:42:07Z")

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If anyone still needs to solve this error, it is probably caused by copy-pasting the reclass\_table variable into the Julia command line interpreter. I’ve noticed it sometimes ignores some empty spaces.

The variable in question should look something like reclass\_table = [11. 100; 21 500; …] but when the empty spaces get dropped it becomes reclass\_table = [11.100; 21500; …]

Your error is saying it expects a two dimensional array, and it has gotten from you a 1D vector, which makes sense when you notice how the content of the variable changed while pasting into the command line.