stata 方法收集
rename 容积率 x gen lower =ustrregexs(0) if ustrregexm(x,"(?<=\≥)[\d\.]+") replace lower =ustrregexs(0) if ustrregexm(x,"(?<=\＞)[\d\.]+")&lower=="" replace lower =ustrregexs(0) if ustrregexm(x,"(?<=\大于或等于)[\d\.]+")&lower=="" gen upper =ustrregexs(0) if ustrregexm(x,"(?<=\≤)[\d\.]+") replace upper =ustrregexs(0) if ustrregexm(x,"(?<=\<)[\d\.]+")&upper=="" replace upper =ustrregexs(0) if ustrregexm(x,"(?<=\小于或等于)[\d\.]+")&upper==""
