在Stata中使用merge命令时遇到错误“factor-variable and time-series operators not allowed”通常意味着在合并过程中使用了不被允许的变量类型或操作符。这里有几个步骤可以帮助你解决这个问题: 理解错误信息: “factor-variable and time-series operators not allowed”意味着在合并操作中,你可能使用了因子变量(facto...
最近合并CHNS两个数据表遇到以下问题,请大家帮忙,我所用的命令是merge m:1 wave commid hhid line using m10wages,但却出现以下提示variables wave commid hhid line do not uniquely identify observations in the using data,我曾尝试加入省份变量或删掉commid,但是仍然不行,我大概查看了以下,感觉用wave hhid和...
Stata的默认图表质量还是属于上乘的（其实Stata允许二次加工，只是加工起来比较费时），尤其是跟Eviews和S...
(file bnd_ccbchg.dta not found) file bnd_ccbchg.dta saved Contains data from bnd_ccbchg.dta Observations: 6,274 Variables: 14 5 Jul 2023 15:11 --- Variable Storage Display Value name type format label Variable label ---
Once the master observations were exhausted, merge wrote down any observations from the using data that were never used. In other words, no matches were found and thus each became a separate observation in the merged result. The key variable or variable list in 1:1 merges ...
. use mydata4,clear. keep id economy. save "economy.dta",replace. use economy,clear. sort id. merge id using student(note: you are using old merge syntax; see [D] merge for new syntax). tab _merge_merge | Freq. Percent Cum.---+---3 | 5 100.00 100.00---+---Total | 5 100...
variable column observation row groupby bysort NaN . 1.2 路径操作 Stata 中,切换路径使用 cd 命令,Python 则使用 os 模块中的 chdir() 方法。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 * Stata pwd cd "c:/..." 代码语言:javascript 代码运行次数:0 运行 AI代码解释 # Python import os ...
/*强调:在进行merge前,一定要检查master数据与using数据中的排序后变量是否identify*/ /*如果不identify,则会报错:r(459);*/ /*标红字体:variable wave does not uniquely identify observations in the using data*/ *例如 clear use hhinc_10.dta,clear ...
Subjectst: reshape "variable not found in using data" error (Stata 10.1) DateTue, 19 Jul 2011 23:33:45 -0400 I've seen a few threads of similar mistakes that suggest updating. Still, I couldn't make this reshape to work. Below you'll see the code with the output. I sequentially ...
(1)为了反映企业并购活动的程度,Wang等(2022)构建了并购强度测度,是用过去三年并购交易规模与总资产的等权移动平均值计算的。并购样本包括交易价值在100万人民币以上的成功的资产收购交易。该方法也与Amor和Kooli(2020)一致,他们构建了VC声誉度量,IPO/并购市场份额计算为VC在前三个历年所有风险投资支持的IPO或并购的...