Issue installing FLOWNoise

[eversilia]

DISCLAIMER: I am very new to Julia, hence it could be that I am missing something and this is not an issue.

I successfully precompiled all the dependencies and I am using Python 3.8.5, but I get the following error when importing FLOWNoise

ERROR: LoadError: ArgumentError: hasproperty of NULL PyObject
Stacktrace:
[1] pyhasproperty(o::PyCall.PyObject, s::String)
@ PyCall ~/.julia/packages/PyCall/ilqDX/src/PyCall.jl:371
[2] hasproperty
@ ~/.julia/packages/PyCall/ilqDX/src/PyCall.jl:377 [inlined]
[3] rc(args::String; kws::Base.Pairs{Symbol, String, Tuple{Symbol}, NamedTuple{(:family,), Tuple{String}}})
@ PyPlot ~/.julia/packages/PyPlot/2MlrT/src/PyPlot.jl:191
[4] top-level scope
@ ~/.julia/packages/FLOWNoise/t5EXx/src/FLOWNoise.jl:38
[5] include
@ ./Base.jl:418 [inlined]
[6] include_package_for_output(pkg::Base.PkgId, input::String, depot_path::Vector{String}, dl_load_path::Vector{String}, load_path::Vector{String}, concrete_deps::Vector{Pair{Base.PkgId, UInt64}}, source::Nothing)
@ Base ./loading.jl:1318
[7] top-level scope
@ none:1
[8] eval
@ ./boot.jl:373 [inlined]
[9] eval(x::Expr)
@ Base.MainInclude ./client.jl:453
[10] top-level scope
@ none:1

If I manually evaluate the expression in @ ~/.julia/packages/FLOWNoise/t5EXx/src/FLOWNoise.jl:38 it works fine.
Any help would be much appreciated, thank you a lot !

[EdoAlvarezR]

Hi Enrico, I hope you find this code useful!

We ran into this issue a few weeks ago with the newer version of PyPlot. Please see the following issue in a related code LINK and let us know if the same solution helps you here.

P.S. If you are only interested in noise predictions, you might also find this FW-H code useful (developed by Daniel Ingraham, @dingraha): LINK

[eversilia]

Hi Eduardo, thank you for your reply. Nice work and thank you for the very detailed installing instructions, very much appreciated !
I solved it by removing the calls to PyPlot.rc which looks like is the only one giving troubles . I will also try to change the PyPlot version as suggested in your linked issue.

Right now I am getting accustomed to FLOWUnsteady; I would like to see if it can help me overcome the limitations of the standard VPM that we exploit to simulate a wide variety of helicopter rotors. If you wish, I'll let you know how it goes !

[EdoAlvarezR]

It would be great if you are able to share any validation studies you might perform, or any new cool applications, but it's understandable if you can't.
@cibinjoseph was working on a rotor + fuselage case simulating the Robin helicopter, which you might be interested in picking up and continuing.

[cibinjoseph]

This is the same issue with PyPlot 2.11.2 version as in the FLOWUnsteady repo. It can be resolved by installing the previous version of PyPlot manually using the command:
] add [email protected]
This has to be done right before installing FLOWNoise.

[EdoAlvarezR]

Permanent fix: I removed some formatting of PyPlot that was being done upon loading the module. For some reason that was the cause of the error in the latest PyPlot version.

Now FLOWNoise is back to being compatible with any version of PyPlot