黃河泉 发表于 2018-4-8 16:33
1. 你若要问程序 (code),请附上资料;你若要附上资料,请用 dataex 印出资料。
2. 尔后建议请用 dataex ( ...
- * Example generated by -dataex-. To install: ssc install dataex
- clear
- input byte(g_wai g_xue g_chan g_gov) str9 code str12 dis_code str2 province str9 province1
- 2 8 3 7 "01602084X" "610428100200" "61" "陕西"
- 5 6 3 6 "100006493" "110108012007" "11" "北京"
- 5 4 3 5 "100008392" "330424001016" "33" "浙江"
- 7 6 8 8 "100013968" "130302104216" "13" "河北"
- 1 8 7 8 "100019569" "110101010020" "11" "北京"
- 8 7 8 8 "100019964" "320411104400" "32" "江苏"
- 2 8 8 8 "100026793" "110108010025" "11" "北京"
- 7 8 8 7 "100026961" "320505003003" "32" "江苏"
- 4 1 1 1 "100028190" "110114004209" "11" "北京"
- 2 1 1 1 "10091298X" "411328001002" "41" "河南"
- 6 2 4 4 "101100051" "110105001025" "11" "北京"
- 4 8 7 7 "101100772" "110112006219" "11" "北京"
- 7 4 2 6 "101100895" "110101014015" "11" "北京"
- 6 4 3 8 "101101134" "110102019003" "11" "北京"
- 3 4 5 8 "101101142" "110105011045" "11" "北京"
- 4 4 2 4 "101101150" "110105011045" "11" "北京"
- 5 1 8 5 "101101329" "110105017040" "11" "北京"
- 4 7 6 8 "101101599" "110105004034" "11" "北京"
- 8 8 8 8 "101101660" "110105011045" "11" "北京"
- 4 7 1 1 "101101919" "110105011045" "11" "北京"
- end
复制代码我想只保留北京的数据,其他不变。
这个命令keep code g_gov g_chan g_xue g_wai if province=="北京",有什么问题吗?