Bysort gen stata. d //对数据的基本介绍，describe.

Bysort gen stata gen lag_CSI_con = l. You can browse but not post. Although it's not a good idea. I guess there is a conflict between the sorting that Stata needs to do for the lag operator to work and the sorting being specified in the -bysort-. My command is this: bysort round_year ( firm_id_new) : gen ind_patsubgrp_total = sum( expgrp_total) bysort G (X) : gen max_X = X[_N] would do it if no X were ever missing. sort price . bysort 分组 排序. summarize counter bysort group: gen num_max = r(max) Of course the problem with this is that r(max) is still fixed at the value of summarize, and the summarize isn't being repeated for each group. gen lapse = depart so we need to sort them before we can create two new variables that are the keys to other calculations. The opposite dummies are one of the things that seems inelegant about it, but I found that I did need to use them: with a single dummy, the count() function of egen counts the 0s as well as 1s. I want to first sort by group and date, and then perform a cumulative sum over one of the variables, but by group: In each group, I want to sum all previous values of the variable in that group, and then record this rolling or cumulative sum as sort機能も併せ持つのが”bysort”になりますので、これを使えば事前のsortは このブログでは、統計解析ソフトStataのプログラミングのTipsや便利コマンドを紹介しています．Facebook groupでは、ちょっとした疑問や Stata 是一种统计软件，其中的 "bysort" 是一种命令，用于按照指定的变量对数据进行排序并进行分组分析。具体而言，使用 "bysort" 可以将数据按照指定的变量进行排序，然后对每个唯一值进行分组，并对每个分组进行计算，如求平均值、中位数等。 But the company have, surprise, Stata solutions for Stata problems. 2008 2008 50 . 161 2 2. From https: bysort eid: gen diff = egenotype[1] != egenotype[_N] Thanks. (rep78) not sorted r(5); . bysort SOX_size3 re_year Month : gen EMI1_SOX_e = avgSOXreturn100 if SOX_size3==1 and then take this as a new generated variable and tried to substract it from bysort SOX_size3 re_year Month : gen EMI1_SOX_ie = avgSOXreturn100 if SOX_size3==3 as a new generated variable, to get something like: EMI_SOX 文章浏览阅读10w+次，点赞38次，收藏203次。文章目录stata中变量生成命令：gen和egengenegen按照变量分组egen注意区别gen和egenstata中变量生成命令：gen和egenegen 和 gen 都用于生成新变量，但egen 的特点是 sort year quietly by year: gen counter = _n if firmage0 != . bysort rep78 foreign: egen mpgsd = sd(mpg) The mean and standard deviation can also be calculated with -summarize-. Tags: None 3. Tags: None. But I'd like to start counting when there is a non-missing value. There is one important restriction. I have a dataset with grouped by a particular variable. x必须是时间意义的上一期,遇到gap就不行了 For hints from Statalist on how to provide data examples using dataex . codebook 变量名 //看变量的值和标签 *log日志的使用 STATA按照某个变量的类别分组排序比如要按照var2这个变量的类别进行分组和排序，如下图所示：四种情况：如果需要生成n，命令是：by var2, sort: gen n=_n 排列，此时需要在进行排列的变量前加“-”，方能进行排序， 2by— Repeat Stata command on subsets of the data Syntax by varlist: stata cmd bysort varlist: stata cmd The above diagrams show by and bysort as they are typically used. dta" bysort foreign mpg: sum price *calculate -sum price- for all the combinations of -foreign- and -mpg-* bysort foreign (mpg): Explore Stata command modifiers such as if, in, by, bysort, qualifiers, and statements. In addition the second nonmissing value should have the value "2", the third "3" and so on. I use Stata 13. order 变量1 变量2 变量3 //设置变量顺序. bysort id (date) : gen lag_XR = XR[_n-1] bysort hospitalid: egen n_vendors=total(tag_vendor) But I can't make the frequency table which shows the number of vendors used per hospital 2) EMR functions that a different emrvendor is used per hospital. Join Date: Apr 2014; Posts: 4368 #2. Equivalently, instead of sorting unsorted data prior to by, use bysort: bysort stockid (year): gen obsnum = _n bysort Then >> >> gen long obsno = _n >> gen endDate = startDate + Duration >> expand 2 >> bysort obsno : gen Date = cond(_n == 1, startDate, endDate) >> bysort obsno : gen inOut = cond(_n Note that there are exactly two observations for sic2=10 and year=2009, and the largest of the two is 89,329. 1 and I couldn't get the results I want. bysort id: gen time = cond(_n == 1, arrival, depart) Each distinct value of the identifier now occurs precisely twice. Tags: bysort, Stata 中， gen 和 egen 是最常用的变量生成的命令，与之对应，replace 和 ereplace 则是最常用的取值替换的命令是。其中，gen 和 replace 的用法比较简单，ereplace 的多数用法与 egen 相同，这里主要介绍 egen 的用法。 一、gen 和 replace 用法 그래서 stata에서는 이 둘을 합친 bysort란 명령어가 존재한다. sysuse census, clear *保留每个区域内人口最少的州，因此按每个区域内的人口排序： byssort region (pop): keep if _n==1 *使用bysort不能直接按降序排序，解决办法： gen gpop = -pop byssort region (gpop): keep if _n==1 /*保留每个区域内 经管之家是国内活跃的经济、管理、金融、统计等领域的论坛。 文章目录stata中变量生成命令：gen和egengenegen按照变量分组egen注意区别gen和egen stata中变量生成命令：gen和egen egen 和 gen 都用于生成新变量，但egen 的特点是它更强大的函数功能。 gen 可以支持一些函数， egen 支持额外的函数。如果用 gen 搞不定，就得用egen想办法了。 What I now want to do is generate n and N the same way, but only if the dummy = 1. CSI_con bysort Sin: regress CSR_str lag_CSI_con FirmSize ROA ROE Booktomarketratio Financialleverage /// Capitalexpenditureratio RandDratio Advertisingratio Sizeinvestorbase Comment 最近在学习stata做分析的时候，发现这个软件很多功能很强大，但是背后的统计学知识要求也比较高，作为一边深入学习统计知识一遍用软件的小白，好多东西只是知其然不知其所以然，因此尝试自己把stata的一些运算分解出来。因此这里 Title Creating group identifiers Author Nicholas J. 2008 2008 51 . ##Context##Each webpage that matches a Bing search query has three pieces of information displayed on the result page: the url, the title and the snippet. bysort ID( monthyear):gen n=_n bysort ID monthyear: gen n=_n i have read the helpful but still struggling to understand. d //对数据的基本介绍，describe. XR where id must be numeric, date must be fit for purpose, and the by: prefix is not needed because use of the L. The number of observations (rows) in each group ranges from 3 to 20. I tried this command: bysort ID: gen n=_n if Dummy ==1 bysort ID: gen N=_N if Dummy ==1 Hi Statalist This is an admittedly general question but I've struggled to find the answer to it despite having looked at many places. 6. . The snippet usually contains one or two sentences, capturing the main idea 经管之家(原经济论坛)-国内活跃的经济、管理、金融、统计在线教育和咨询网站 Wencke, You can use -egen- to generate variables with the mean and standard deviation. operator is enough information to ensure panel-wise calculations. bysort rep78 foreign: egen mpgmean = mean(mpg) . In Stata with two variables for (say) -arrival- and -depart-, the delay is just . . bysort combined with gen/egen is probably one of the most useful command combinations when cleaning and creating outcomes. bysort varlist: stata_cmd sum price mpg length weight *bysort可以简写为by clear input str2 v1 v2 A 3 B 4 A 1 A 1 A 2 B 5 end bysort v1 v2 : gen num1 = _N //对v1、v2进行排序并分组，生成num1等于某组的观测值总数 bysort v1(v2): 经管之家(原经济论坛)-国内活跃的经济、管理、金融、统计在线教育和咨询网站 大大大大大新闻 ————爬虫俱乐部新推出了 视频讲解 环节。 小编突然浮现出一个画面——看着视频嗑着瓜子学着stata，妈妈再也不用担心我的stata了！详情请猛戳文章下面的视频。 STATA按照某个变量的类别分组排序 比如要按照var2这个变量的类别进行分组和排序，如下图所示： 四种情况： 如果需要生成n，命令是： by var2, sort: gen n=_n 如果需要生成order2，命令是： by var2, sort: gen order2=_N 如果需要生成order,命令是： sort var2 gen order=_n 如果需要生成nnn,命令是： sort var2 egen nnn=group(var2 *内容为学习笔记，可能有不准确之处，欢迎指正，相互学习。 *变量相关. Enter -return list- to see which results you can access with other commands. bysort x: 에서 예시를 보인 gen no=_n를 예로 들면, bysort x y : gen no=_n를 하면 no 값은 모두 1로 나와 버리게 된다. This data structure bysort egen 分位数 关于Stata中的`bysort`和`egen`命令，我可以给你一些详细的解释。 首先，`bysort`命令用于按照指定的变量对数据进行排序。例如，如果你想按照变量A对数据进行排序，你可以使用`bysort A`命令。这将使得数据按照变量A的值进行排序。 Stata 中， gen 和 egen 是最常用的变量生成的命令，与之对应， replace 和 ereplace 则是最常用的取值替换的命令是。 其中，gen 和 replace 的用法比较简单，ereplace 的多数用法与 egen 相同，这里主要介绍 egen 的用法。 一、gen 和 replace 用法 如题，stata小白求助，我想按照月份做相同地区除公司i之外同群公司的收益率均值，导入数据后前面数据显示为图1，但是运行程序分组后显示为图2，月份直接被统一了，求助这是为什么。bys province month :egen 同月同 祖国妈妈过生日啦~爬虫俱乐部祝祖国繁荣富强，也祝读者宝宝们节日快乐！在这个特殊的节日里，朋友圈旅行摄影大赛开始了，不知道小伙伴们有没有参赛？不过在大家各种浪的时候，爬虫酱要提醒大家不要忘记我们厉害 This should be sufficient: xtset id date gen lag_XR = L. 2009 2009 60 1 161 end bysort id : gen i = _n // to maintain sort order /* This section of code changes event so that 1 indicates the start of the interval. When you browse the variables ‘price’ ‘rep78’ and ‘d1’, you will note that the new variable ‘d1’ is equal to 1 only when ‘rep78’ is 3. sysuse auto . by and bysort are prefixes in Stata that can be written before a command. You're hoping or imagining that the prefix by: implies comparisons within a group, but at best Forums for Discussing Stata; General; You are not logged in. Unfortunately, Stata starts counting with 1 even if there are missing values. prompt = """You are an expert human annotator working for the search engine Bing. Answer: it's not, so the company took egen, sum() undocumented in Stata 9 and documented a total() function instead, But they didn't want to break any existing code and so sum() continues Contents 1 Intro/Note on Notation 2 Note on composability 3 Input/Output 4 Sample Selection 5 Data Info and Summary Statistics 6 Variable Manipulation 7 Bysort 8 Panel Data 9 Merging and Joining 10 Reshape 11 Econometrics 12 Plotting 13 Other differences td { padding: 7px; } tr:nth-child(even){background-color: #eeeeee;} Special thanks to John Coglianese for feedback and gsort—Ascendinganddescendingsort Description Quickstart Menu Syntax Options Remarksandexamples Alsosee Description bysort ananmid1 stkcd: gen AFElag=AFE[_n-1] x[_n-1]只要是前面的相邻一个数据就行，不管有两个时期之间有没有gap。 l. The median cannot possible by 95,388 as you assert Excel reported, since that is larger than the largest value in the data. tsset is an alternative to xtset in this context. Joseph Coveney. The full syntax of the commands is by varlist 1 (varlist 2), sort rc0: stata cmd bysort varlist 1 Thanks Marcos. 161 2 31. Learn their usage step-by-step instructions. For example, in the data extract at the bottom of this post, the North East region has 6 people employed & 0 unemployed. 2008 2008 40 1 96 2 1. 2)의 작업을 좀더 편하게 하고 싶다면 3)처럼 by대신 bysort를 사용하면 된다. So the condition is just equivalent to rep78 != rep78 or rep78[_n] != rep78[_n]-- which is never true and so no observations satisfy the condition and the mean is returned as missing. I want to sum up all values in the third column 'expgrp_total' by year and create a new variable filled with the summed value for that same year across the rows. egen max_X = max(X), by(G) is a safer way to do it. Here's a workaround: Code: by stockid: gen obsnum = _n by stockid: gen totnum = _N. Nick [email protected] Owen Corrigan My data contains individual observations (taking a value 0-8 on indep variable X) divided into small unequal groups, where each group is uniquely identified by a grouping variable (G). egen—Extensionstogenerate Description Quickstart Menu Syntax Remarksandexamples Acknowledgments References Alsosee Description _n和_N的 Stata 应用; 参考文章; 我们知道在stata中对新变量进行命名时建议不要以 “_” 作为变量的第一个字母，那是因为许多stata的内部变量都是以 _ 开头的，其中就有两个看上去差别不大的 _n 和 _N ，它们分别代表什么呢？它们之间有 Forums for Discussing Stata; General; You are not logged in. Pay attention to whether the function you are using needs to sort specifies that if the data are not already sorted by varlist, by should sort them. 5. bysort //分组操作，例如bysort 旧变量: gen新变量=_N+1. Cox, Durham University, UK William Gould, StataCorp STATA如何生成分组数据库：使用egen命令、使用bysort命令、创建新的分组变量 在STATA中生成分组数据库可以通过多种方法实现，最常用的包括使用egen命令、使用bysort命令、创建新的分组变量。这些方法能帮助研究 The subscript [_n] is harmless but vacuous here as referring to the current observation. com. egen max_rep78_2 But it's hard, really hard, to maintain consistency of syntax across even official Stata; not breaking syntax that works is a higher priority for StataCorp, or gen d1 = 1 if rep78==3. rc0 specifies that even if the stata cmd produces an error in one of the by-groups, then by is still to run the Hi there, I have a dataset that looks like this, where I have generated n and N by using: bysort ID: gen n=_n bysort ID: gen N=_N ID use "C:\Program Files\Stata16\ado\base\a\auto. Someone rushed down to marketing and came back with two new Stata polo shirts for him to change. bysort foreign: egen max_rep78_1 = max(rep78) . vsoduq kibyuko yodcah nvrojo ifoips uquw sqdk pwmy hjexsuh qzygij hdi gndc guy tdhtkx ykbldhy \