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Alexander-Barth / NCDatasets.jl

Load and create NetCDF files in Julia
MIT License
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StepRangeLen doesn't work as variable #224

Open ryofurue opened 1 year ago

ryofurue commented 1 year ago

Describe the bug

A StepRangeLen doesn't work as a variable. You need to convert it to an Array with collect(). [Sorry. I looked at the error message, but I don't know internals of julia well enough to understand what unsafe_convert() is.]

To Reproduce

using Dates
using NCDatasets
# create a sample file
tax = DateTime(2020,1,1):Dates.Day(1):DateTime(2020,1,4)
var = 10.0:10.0:40.0
#var = collect(10.0:10.0:40.0)
NCDataset("tmp.nc", "c") do ds
  defDim(ds, "time", Inf)
  defVar(ds, "time", tax, ("time",))
  defVar(ds, "var", var, ("time",))
end

Expected behavior

I hope ranges will be treated equally to vectors.

Environment

Full output Error message:

ERROR: LoadError: conversion to pointer not defined for StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}
Stacktrace:
  [1] error(s::String)
    @ Base ./error.jl:35
  [2] unsafe_convert(#unused#::Type{Ptr{Float64}}, a::StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64})
    @ Base ./pointer.jl:67
  [3] unsafe_convert(#unused#::Type{Ptr{Nothing}}, a::StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64})
    @ Base ./pointer.jl:66
  [4] nc_put_vara(ncid::Int32, varid::Int32, startp::Vector{Float64}, countp::Vector{Int64}, op::StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64})
    @ NCDatasets ~/.julia/packages/NCDatasets/st9Jz/src/netcdf_c.jl:851
  [5] nc_put_var(ncid::Int32, varid::Int32, data::StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64})
    @ NCDatasets ~/.julia/packages/NCDatasets/st9Jz/src/netcdf_c.jl:767
  [6] setindex!
    @ ~/.julia/packages/NCDatasets/st9Jz/src/variable.jl:374 [inlined]
  [7] setindex!(v::CommonDataModel.CFVariable{Float64, 1, NCDatasets.Variable{Float64, 1, NCDataset{Nothing}}, NCDatasets.Attributes{NCDataset{Nothing}}, NamedTuple{(:fillvalue, :missing_values, :scale_factor, :add_offset, :calendar, :time_origin, :time_factor), Tuple{Nothing, Tuple{}, Vararg{Nothing, 5}}}}, data::StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, indexes::Colon)
    @ CommonDataModel ~/.julia/packages/CommonDataModel/RSBF3/src/cfvariable.jl:418
  [8] _defVar(ds::NCDataset{Nothing}, name::String, data::StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, nctype::Type, dimnames::Tuple{String}; attrib::Vector{Any}, kwargs::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ NCDatasets ~/.julia/packages/NCDatasets/st9Jz/src/cfvariable.jl:235
  [9] _defVar
    @ ~/.julia/packages/NCDatasets/st9Jz/src/cfvariable.jl:186 [inlined]
 [10] #defVar#39
    @ ~/.julia/packages/NCDatasets/st9Jz/src/cfvariable.jl:183 [inlined]
 [11] defVar(ds::NCDataset{Nothing}, name::String, data::StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, dimnames::Tuple{String})
    @ NCDatasets ~/.julia/packages/NCDatasets/st9Jz/src/cfvariable.jl:176
 [12] (::var"#3#4")(ds::NCDataset{Nothing})
    @ Main ~/Dropbox/jwk/try-netcdf-opendim.jl:12
 [13] NCDataset(::var"#3#4", ::String, ::Vararg{String}; kwargs::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ NCDatasets ~/.julia/packages/NCDatasets/st9Jz/src/dataset.jl:255
 [14] NCDataset(::Function, ::String, ::Vararg{String})
    @ NCDatasets ~/.julia/packages/NCDatasets/st9Jz/src/dataset.jl:252
 [15] top-level scope
    @ ~/Dropbox/jwk/try-netcdf-opendim.jl:9
 [16] include(fname::String)
    @ Base.MainInclude ./client.jl:478
 [17] top-level scope
    @ REPL[1]:1
in expression starting at /Users/furue/Dropbox/jwk/try-netcdf-opendim.jl:9

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