GIS????????

1
GIS????????

• ???
• ??????
• ?????
• ?????????????????

2
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• ?????
• 1.??????,???????20??40??????????????????????,?????
  ??20??40??????

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????????????20??40???????
4
????????????????600??1200?????????,?????????
5
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• ?????????r1?r2?r3?mainstreet??????????????????????
  ?????,????????????????????????????arcview?????Geop
  rocessing?????view????view/Geoprocessing wizard
  ???????????,????????Draw Line????????????????????
  ?????????????????????????? ????????????
  ??????????????????????????????

6
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• ??????????????,?????????????,????????????????????
  ??????,????????????0-100?100-500?500-1000?1000
  -1500??

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8
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9
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• ??????????????????,??????school?????????????town_
  name(????)?rec_school(????),??????????????????????
  ,???town_name?,???summarize???????,???????????????
  ??????,????????P(??)P(??)H(????)??????????????????
  ??????,????????????????????????????????????????

10
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11
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