{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "c27ab466700af2af",
   "metadata": {},
   "source": "# Converting Feature Classes"
  },
  {
   "cell_type": "code",
   "id": "4e919b89c4a6504c",
   "metadata": {
    "ExecuteTime": {
     "end_time": "2026-05-01T01:24:21.839832843Z",
     "start_time": "2026-05-01T01:24:11.670488045Z"
    }
   },
   "source": [
    "import footbridge as ft\n",
    "\n",
    "# large dataset of US National Highway System roads\n",
    "# https://hepgis-usdot.hub.arcgis.com/datasets/dce9f09392eb474c8ad8e6a78416279b_0\n",
    "fc = ft.FeatureClass(\"NHS.gdb/National_Highway_System__NHS_\")\n",
    "f\"{len(fc)} rows\""
   ],
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'492005 rows'"
      ]
     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "execution_count": 12
  },
  {
   "metadata": {
    "ExecuteTime": {
     "end_time": "2026-05-01T01:24:21.886558194Z",
     "start_time": "2026-05-01T01:24:21.840497351Z"
    }
   },
   "cell_type": "code",
   "source": "fc.list_fields()",
   "id": "c6260760b1e18127",
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['ObjectID',\n",
       " 'VERSION',\n",
       " 'YEAR',\n",
       " 'STFIPS',\n",
       " 'CTFIPS',\n",
       " 'ROUTEID',\n",
       " 'BEGINPOINT',\n",
       " 'ENDPOINT',\n",
       " 'SIGN1',\n",
       " 'SIGNT1',\n",
       " 'SIGNN1',\n",
       " 'LNAME',\n",
       " 'NHS',\n",
       " 'STATUS',\n",
       " 'FACID',\n",
       " 'CONNID',\n",
       " 'CONNDES',\n",
       " 'CONNMILES',\n",
       " 'ACLASS',\n",
       " 'FCLASS',\n",
       " 'FACILITYT',\n",
       " 'THROUGH_LA',\n",
       " 'SPEED_LIMI',\n",
       " 'OWNERSHIP',\n",
       " 'URBANCODE',\n",
       " 'AADT',\n",
       " 'AADT_COM',\n",
       " 'AADT_SINGL',\n",
       " 'FUT_AADT',\n",
       " 'FUT_YEAR',\n",
       " 'MILES',\n",
       " 'UPDATE_DAT',\n",
       " 'NHS_ACTION',\n",
       " 'FILE_NAME',\n",
       " 'SHAPE_Length',\n",
       " 'geometry']"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "execution_count": 13
  },
  {
   "metadata": {
    "ExecuteTime": {
     "end_time": "2026-05-01T01:24:21.960940559Z",
     "start_time": "2026-05-01T01:24:21.887157997Z"
    }
   },
   "cell_type": "code",
   "source": "fc = fc.select_columns(\"ROUTEID\")",
   "id": "5815343bf82d460d",
   "outputs": [],
   "execution_count": 14
  },
  {
   "cell_type": "code",
   "id": "ae7b1221c9d2d876",
   "metadata": {
    "ExecuteTime": {
     "end_time": "2026-05-01T01:24:28.050117058Z",
     "start_time": "2026-05-01T01:24:21.962210495Z"
    }
   },
   "source": "fc.to_shp(\"output.shp\")",
   "outputs": [],
   "execution_count": 15
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
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  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
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   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython2",
   "version": "2.7.6"
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 "nbformat": 4,
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