Minor changes

src/Gnuplot.jl

@@ -991,6 +991,9 @@ save(             file::AbstractString; kw...) = open(file, "w") do stream; dump
 save(sid::Symbol, file::AbstractString; kw...) = open(file, "w") do stream; dump(getsession(sid), stream; kw...); end
 
 
+# ╭───────────────────────────────────────────────────────────────────╮
+# │                     HIGH LEVEL FACILITIES                         │
+# ╰───────────────────────────────────────────────────────────────────╯
 # --------------------------------------------------------------------
 #=
 Example:
@@ -1031,6 +1034,7 @@ function hist(v::Vector{T}; range=[NaN,NaN], bs=NaN, nbins=0, pad=true) where T
 end
 
 
+# --------------------------------------------------------------------
 function hist(v1::Vector{T1}, v2::Vector{T2};
               range1=[NaN,NaN], bs1=NaN, nbins1=0,
               range2=[NaN,NaN], bs2=NaN, nbins2=0) where {T1 <: Number, T2 <: Number}
@@ -1061,7 +1065,7 @@ function hist(v1::Vector{T1}, v2::Vector{T2};
 end
 
 
-
+# --------------------------------------------------------------------
 function contourlines(args...; cntrparam="level auto 10")
     tmpfile = Base.Filesystem.tempname()
     sid = Symbol("j", Base.Libc.getpid())
@@ -1139,6 +1143,7 @@ function contourlines(args...; cntrparam="level auto 10")
 end
 
 
+# --------------------------------------------------------------------
 function boxxyerror(x, y; xmin=NaN, ymin=NaN, xmax=NaN, ymax=NaN, cartesian=false)
     @assert length(x) == length(y)
     @assert issorted(x)
@@ -1171,6 +1176,7 @@ function boxxyerror(x, y; xmin=NaN, ymin=NaN, xmax=NaN, ymax=NaN, cartesian=fals
 end
 
 
+# --------------------------------------------------------------------
 function histo2segments(in_x, counts)
     @assert length(in_x) == length(counts)
     x = Vector{Float64}()

test/runtests.jl

@@ -101,7 +101,8 @@ y = 1.5 * sin.(0.3 .+ 0.7x) ;
 noise = randn(length(x))./2;
 e = 0.5 * fill(1, size(x));
 
-@gp hist(noise, nbins=10)
+h = hist(noise, nbins=10)
+@gp h.loc h.counts "w histeps"
 
 
 @gp x y
@@ -129,14 +130,11 @@ name = "\$MyDataSet1"
 @gp :- "plot $name u 1:((f(\$1)-\$2) / \$3):(1) w errorbars notit"
 
 # Retrieve values for a, b and c
-a = 0; b = 0; c = 0;
+a = Meta.parse(Gnuplot.exec("print a"))
-try
+b = Meta.parse(Gnuplot.exec("print b"))
-    a = parse(Float64, exec("print a"))
+c = Meta.parse(Gnuplot.exec("print c"))
-    b = parse(Float64, exec("print b"))
+
-    c = parse(Float64, exec("print c"))
+
-catch
-end
-gnuplot(:dry)
 @gp    :dry "f(x) = a * sin(b + c*x); a = 1; b = 1; c = 1;"  :-
 @gp :- :dry "a = $a; b = $b; c = $c"                         :-
 @gp :- :dry "set multiplot layout 2,1" ylab="Data and model" :-
@@ -148,8 +146,8 @@ name = "\$MyDataSet1"
 @gp :- :dry "plot $name u 1:((f(\$1)-\$2) / \$3):(1) w errorbars notit" :-
 @gp :- :dry
 save("test.gp")        # write on file test.gp
-quitall()
+Gnuplot.quitall()
-exec("load 'test.gp'") # load file test.gp
+Gnuplot.exec("load 'test.gp'") # load file test.gp
 
 #-----------------------------------------------------------------
 @gp("""
@@ -214,4 +212,4 @@ exec("load 'test.gp'") # load file test.gp
 	"splot x8, v, (u<0.5) ? -1 : sinc(x8,v) notitle",
 	"splot x9, v, (u<0.5) ? -1 : sinc(x9,v) notitle")
 
-quitall()
+Gnuplot.quitall()