Code re-factoring
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Giorgio Calderone
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1665b78a54
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953
src/Gnuplot.jl
953
src/Gnuplot.jl
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@ -1,247 +0,0 @@
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isdefined(Base, :__precompile__) && __precompile__()
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######################################################################
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# MODULE GnuplotInternals (private functions and definitions)
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######################################################################
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module p_
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importall Gnuplot
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const P_ = Gnuplot
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######################################################################
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# Structure definitions
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######################################################################
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"""
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Structure containing the `Pipe` and `Process` objects associated to a
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Gnuplot process.
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"""
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mutable struct GnuplotProc
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pin::Base.Pipe
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pout::Base.Pipe
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perr::Base.Pipe
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proc::Base.Process
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channel::Channel{String}
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"""
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Start a new gnuplot process using the command given in the `cmd` argument.
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"""
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function GnuplotProc(cmd::String)
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this = new()
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this.pin = Base.Pipe()
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this.pout = Base.Pipe()
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this.perr = Base.Pipe()
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this.channel = Channel{String}(32)
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# Start gnuplot process
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this.proc = spawn(`$cmd`, (this.pin, this.pout, this.perr))
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# Close unused sides of the pipes
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Base.close_pipe_sync(this.pout.in)
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Base.close_pipe_sync(this.perr.in)
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Base.close_pipe_sync(this.pin.out)
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Base.start_reading(this.pout.out)
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Base.start_reading(this.perr.out)
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return this
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end
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end
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#---------------------------------------------------------------------
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"""
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Structure containing a single plot command and the associated
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multiplot index.
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"""
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mutable struct MultiCmd
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cmd::String # command
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id::Int # multiplot index
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end
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"""
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Structure containing the state of a single gnuplot session.
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"""
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mutable struct GnuplotSession
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blockCnt::Int # data blocks counter
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cmds::Vector{MultiCmd} # gnuplot commands
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data::Vector{String} # data blocks
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plot::Vector{MultiCmd} # plot specifications associated to each data block
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splot::Bool # plot / splot session
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lastDataName::String # name of the last data block
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multiID::Int # current multiplot index (0 if no multiplot)
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GnuplotSession() = new(1, Vector{MultiCmd}(), Vector{String}(),
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Vector{MultiCmd}(), false, "", 0)
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end
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#---------------------------------------------------------------------
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"""
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Structure containing the global package state.
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"""
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mutable struct MainState
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colorOut::Symbol # gnuplot STDOUT is printed with this color
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colorIn::Symbol # gnuplot STDIN is printed with this color
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verboseLev::Int # verbosity level (0 - 3), default: 3
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gnuplotCmd::String # command used to start the gnuplot process
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startup::String # commands automatically sent to each new gnuplot process
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procs::Vector{GnuplotProc} # array of currently active gnuplot process and pipes
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states::Vector{GnuplotSession} # array of gnuplot sessions
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handles::Vector{Int} # handles of gnuplot sessions
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curPos::Int # index in the procs, states and handles array of current session
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MainState() = new(:cyan, :yellow, 0,
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"", "", Vector{GnuplotProc}(), Vector{GnuplotSession}(),
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Vector{Int}(), 0)
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end
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######################################################################
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# Functions
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######################################################################
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"""
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Check gnuplot is runnable with the command given in `main.gnuplotCmd`.
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Also check that gnuplot version is >= 4.7 (required to use data
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blocks).
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"""
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function checkGnuplotVersion()
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cmd = `$(main.gnuplotCmd) --version`
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out, procs = open(`$cmd`, "r")
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s = String(read(out))
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if !success(procs)
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error("An error occurred while running: " * string(cmd))
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end
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s = split(s, " ")
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ver = ""
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for token in s
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try
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ver = VersionNumber("$token")
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break
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catch
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end
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end
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if ver < v"4.7"
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# Do not raise error in order to pass Travis CI test, since it has v4.6
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println("gnuplot ver. >= 4.7 is required, but " * string(ver) * " was found.")
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end
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if ver < v"4.6"
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error("gnuplot ver. >= 4.7 is required, but " * string(ver) * " was found.")
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end
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log(1, "Found gnuplot version: " * string(ver))
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return ver
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end
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#---------------------------------------------------------------------
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"""
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Logging facility (each line is prefixed with the session handle.)
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Printing occur only if the logging level is >= current verbosity
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level.
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"""
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function log(level::Int, s::String; id=nothing, color=nothing)
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if (main.verboseLev < level)
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return
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end
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color == nothing && (color = main.colorOut)
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prefix = ""
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if (id == nothing) && (main.curPos > 0)
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id = main.handles[main.curPos]
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end
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prefix = string("GP(", id, ")")
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a = split(s, "\n")
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for v in a
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print_with_color(color, "$prefix $v\n")
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end
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return nothing
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end
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#---------------------------------------------------------------------
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"""
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Read gnuplot outputs, and optionally redirect to a `Channel`.
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This fuction is supposed to be run in a `Task`.
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"""
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function readTask(sIN, channel; kw...)
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saveOutput::Bool = false
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while isopen(sIN)
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line = convert(String, readline(sIN))
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if line == "GNUPLOT_JL_SAVE_OUTPUT"
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saveOutput = true
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log(4, "|begin of captured data =========================")
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else
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if saveOutput
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put!(channel, line)
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end
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if line == "GNUPLOT_JL_SAVE_OUTPUT_END"
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saveOutput = false
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log(4, "|end of captured data ===========================")
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elseif line != ""
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if saveOutput
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log(3, "| " * line; kw...)
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else
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log(2, " " * line; kw...)
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end
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end
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end
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end
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log(1, "pipe closed"; kw...)
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return nothing
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end
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#---------------------------------------------------------------------
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"""
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Return a unique data block name
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"""
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function mkBlockName(;prefix::Union{Void,String}=nothing)
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if prefix == nothing
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prefix = string("d", main.handles[main.curPos])
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end
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cur = main.states[main.curPos]
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name = string(prefix, "_", cur.blockCnt)
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cur.blockCnt += 1
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return name
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end
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#---------------------------------------------------------------------
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"""
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Return the GnuplotProc structure of current session, or start a new
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gnuplot process if none is running.
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"""
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function getProcOrStartIt()
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if main.curPos == 0
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log(1, "Starting a new gnuplot process...")
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id = P_.session()
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end
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p = main.procs[main.curPos]
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if !Base.process_running(p.proc)
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error("The current gnuplot process is no longer running.")
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end
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return p
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end
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######################################################################
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# Module initialization
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######################################################################
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const main = MainState()
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end #module
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@ -1,6 +1,5 @@
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using Base.Test
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using Gnuplot
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const gp = Gnuplot
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function pressEnter()
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println("Press enter...")
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@ -8,72 +7,72 @@ function pressEnter()
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end
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function gp_test(terminal="unknown")
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gp.setOption(startup="set term $terminal")
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gpOptions.startup = "set term $terminal"
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gp.reset()
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gpReset()
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x = collect(1.:100)
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#-----------------------------------------------------------------
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gp.send("plot sin(x)")
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gpSend("plot sin(x)")
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terminal == "unknown" || pressEnter()
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#-----------------------------------------------------------------
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id1 = gp.current()
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id2 = gp.session()
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id3 = gp.session()
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id1 = gpCurrentID()
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id2 = gpNewSession()
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id3 = gpNewSession()
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for i in 1:10
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gp.setCurrent(id1)
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gp.send("plot sin($i*x)")
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gpSetCurrentID(id1)
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gpSend("plot sin($i*x)")
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gp.setCurrent(id2)
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gp.send("plot sin($i*x)")
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gpSetCurrentID(id2)
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gpSend("plot sin($i*x)")
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gp.setCurrent(id3)
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gp.send("plot sin($i*x)")
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gpSetCurrentID(id3)
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gpSend("plot sin($i*x)")
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sleep(0.3)
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end
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terminal == "unknown" || pressEnter()
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gp.exitAll()
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gpExitAll()
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#-----------------------------------------------------------------
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gp.reset()
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name = gp.data([1,2,3,5,8,13])
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gp.plot("$name w points ps 3")
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gp.dump()
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gpReset()
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name = gpData([1,2,3,5,8,13])
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gpPlot("$name w points ps 3")
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gpDump()
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terminal == "unknown" || pressEnter()
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gp.plot(last=true, "w l lw 3")
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gp.dump()
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gpPlot(last=true, "w l lw 3")
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gpDump()
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terminal == "unknown" || pressEnter()
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#-----------------------------------------------------------------
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gp.reset()
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gpReset()
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gp.cmd("set format y \"%.1f\"")
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gp.cmd("set key box opaque")
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gp.cmd("set xrange [-2*pi:2*pi]")
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gp.multi("layout 2,2 columnsfirst title \"Multiplot title\"")
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gpCmd("set format y \"%.1f\"")
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gpCmd("set key box opaque")
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gpCmd("set xrange [-2*pi:2*pi]")
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gpMulti("layout 2,2 columnsfirst title \"Multiplot title\"")
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gp.cmd(ylab="Y label")
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gp.plot("sin(x) lt 1")
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gpCmd(ylab="Y label")
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gpPlot("sin(x) lt 1")
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gp.next()
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gp.cmd(xlab="X label")
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gp.plot("cos(x) lt 2")
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gpNext()
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gpCmd(xlab="X label")
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gpPlot("cos(x) lt 2")
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gp.next()
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gp.cmd("unset ylabel")
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gp.cmd("unset ytics")
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gp.cmd("unset xlabel")
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gp.plot("sin(2*x) lt 3")
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gpNext()
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gpCmd("unset ylabel")
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gpCmd("unset ytics")
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gpCmd("unset xlabel")
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gpPlot("sin(2*x) lt 3")
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gp.next()
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gp.cmd(xlab="X label")
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gp.plot("cos(2*x) lt 4")
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gpNext()
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gpCmd(xlab="X label")
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gpPlot("cos(2*x) lt 4")
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gp.dump()
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gpDump()
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terminal == "unknown" || pressEnter()
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#-----------------------------------------------------------------
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@ -184,7 +183,7 @@ function gp_test(terminal="unknown")
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:plot, "x8, v, (u<0.5) ? -1 : sinc(x8,v) notitle",
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:plot, "x9, v, (u<0.5) ? -1 : sinc(x9,v) notitle")
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gp.exitAll()
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gpExitAll()
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return true
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end
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