Use the Table constructor for TableFile's.

This keeps the vocabulary of this library close to `pgfplots`.

Also convert paths to absolute if necessary, otherwise they will not
be found when compiling from temporary files.

src/axiselements.jl

@@ -482,18 +482,29 @@ end
 # TableFile #
 #############
 
+"""
+$(TYPEDEF)
+
+Placeholder for a table for which data is read directly from a file. Use the
+[`Table`](@ref) constructor.
+"""
 struct TableFile <: OptionType
     options::OrderedDict{Any, Any}
     path::AbstractString
 end
 
 """
-    TableFile([options], path)
+    $SIGNATURES
 
 For reading tables directly from files. See the `pgfplots` manual for the
 accepted format.
+
+If you don't use an absolute path, it will be converted to one.
 """
-TableFile(path::AbstractString) = TableFile(OrderedDict{Any, Any}(), path)
+Table(options::OrderedDict{Any, Any}, path::AbstractString) =
+    TableFile(options, abspath(path))
+
+Table(path::AbstractString) = Table(OrderedDict{Any, Any}(), path)
 
 function print_tex(io_main::IO, tablefile::TableFile)
     @unpack options, path = tablefile

test/test_elements.jl

@@ -132,7 +132,9 @@ end
 end
 
 @testset "tablefile" begin
-    @test squashed_repr_tex(pgf.TableFile(pgf.@pgf({x = "a", y = "b"}), "somefile.dat")) ==
-                                              "table [x={a}, y={b}]\n{somefile.dat}"
-    @test squashed_repr_tex(pgf.TableFile("somefile.dat")) == "table []\n{somefile.dat}"
+    path = "somefile.dat"
+    _abspath = abspath(path)
+    @test squashed_repr_tex(pgf.Table(pgf.@pgf({x = "a", y = "b"}), path)) ==
+                                              "table [x={a}, y={b}]\n{$(_abspath)}"
+    @test squashed_repr_tex(pgf.Table("somefile.dat")) == "table []\n{$(_abspath)}"
 end