{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import (\n",
    "    \"os\"\n",
    "    \"path/filepath\"\n",
    "    \n",
    "    \"go-hep.org/x/hep/hbook/rootcnv\"\n",
    "    \"go-hep.org/x/hep/rootio\"\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "fname := filepath.Join(os.Getenv(\"GOPATH\"), \"src\", \"go-hep.org/x/hep/rootio/testdata/graphs.root\")\n",
    "f, err := rootio.Open(fname)\n",
    "if err != nil {\n",
    "    panic(err)\n",
    "}\n",
    "defer f.Close()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "printf(\"keys: %v\\n\", f.Keys())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "obj, err := f.Get(\"tge\")\n",
    "if err != nil {\n",
    "    panic(err)\n",
    "}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "s2, err := rootcnv.S2D(obj.(rootio.Graph))\n",
    "if err != nil {\n",
    "    panic(err)\n",
    "}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import (\n",
    "    \"image/color\"\n",
    "    \"go-hep.org/x/hep/hplot\"\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "p := hplot.New()\n",
    "p.Title.Text = \"Graph\"\n",
    "h := hplot.NewS2D(s2, hplot.WithYErrBars)\n",
    "h.Color = color.RGBA{R:0xff, A:0xff}\n",
    "p.Add(h)\n",
    "p.Add(hplot.NewGrid())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "hplot.Show(p, 640, -1, \"png\")"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Go",
   "language": "go",
   "name": "go"
  },
  "language_info": {
   "codemirror_mode": "go",
   "file_extension": ".go",
   "mimetype": "",
   "name": "go",
   "nbconvert_exporter": "",
   "pygments_lexer": "go",
   "version": "unreleased"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}