Xtile by group stata Is there a way to do that? For the weight I can use regular xtile: xtile quan = salary [aw=weight Part of the attraction of -egen, group()- is that the resulting groups are guaranteed to run from 1 upwards, as consecutive integers. For more information on Statalist, see the FAQ. Stata连享会由中山大学连玉君老师团队创办,目前累积600多篇优质推文,内容涵盖Stata语法、论文复现代码、数据分析技巧等。包含主页、直播间、知乎、公众号、B站、码云等栏目。读者可以在Stata命令窗口使用“lianxh”和“songbl”关键词快速查询相关资源。 What do the last two lines do? As far as I understand, these lines loop through the list h_nwave and calculate the weighted quantiles, if syear2digit == 'nwave' , i. -xtile()- basically mirrors the functionality of the official Stata-command -xtile-, but it is byable. This is the identification variable • egenmore已下载，但是函数xtile还是不能用; • 关于用xtile分组的问题，和excel的互接; • xtile group=hymy, n(5) 请大家有空时候帮忙看一看可以吗，同样用xtile group=hymybet; • stata用xtile将样本分组如何保证均分 文章浏览阅读2. If you plan to use the plugin extensively, check out the remarks below and the FAQs for caveats and details on the plugin (including some extra features!). dta, clear”命令用于导入Stata自带的汽车数据集，“xtile”命令用于将汽车数据集中mpg变量（每加仑英里数）按照四等份进行分类，并且将结果保存在mpg_group 在Stata中，可以使用命令“xtile”来进行分位数分组。 Hi Statalisters, Can anyone comment on the difference between the way Stata's -xtile- command creates tertiles compared to the way the SAS -proc rank- creates tertiles? And the differences in which ties are handled? The following are the code I'm using and I am getting slightly different results. ado (note the underscore) and e genmore. One way of achieving this is by using the pctile command which creates a variable containing the percentiles according to specification. stata怎么将某一变量按大小分为三组,在做国有企业的非效率投资，稳健性检验中，想将模型残差（非绝对值）按大小分成3组，选择残差最大的一组作为投资过度组，选择残差最小的一组作为投资不足组，中间一组剔除，再次进行回归，请各位大神不吝赐教，谢谢啦~,经管之家(原人大经济论坛) 上面是一种很符合直觉的做法，即先计算分段点百分位数处的取值，然后根据大小关系来确定分组。 但是，上面的做法太麻烦！ egenmore 提供的 xtile 函数来计算，一行代码就就可以解决组内等分组的问题！. 5k次。本文揭示了Stata中使用`gen`命令的`group()`函数进行数据分组时可能出现的不稳定性问题，特别是在变量有重复值时。通过示例解释了`group()`函数的工作原理，指出`sort`命令未加`stable`选项可能导致分组结果随机变化。解决方案包括避免使用`group()`函数处理重复值多的变量，以及 elapsed: Elapsed dates (monthly, quarterly) fill_gap: Add rows corresponding to gaps in some variable is. Another way around this limitation of -xtile-, one which I use fairly often, is to just wrap your -xtile- command in a program and use -runby-. table. if the number of visits is labled as 'visit' table exp, c(n visit) 文章浏览阅读930次。文章揭示了在Stata中使用gen命令的group()函数进行分组操作时，由于排序依赖性，可能导致分组结果不一致。问题源于当分组变量存在重复值时，group()函数无法确保稳定分组。解决方案包括使用xtile命令基于分位数分组，或者在排序命令中添加sort稳定的选项以保持数据相对顺序。 关于pctile 和xtile，求教，感谢！,本人需要用讲所有的观测数据划分为5组，每一组需要是从同一个 行业 and 年份 中具有相同ROA的公司，请问是否应该用pctile 或者xtile ?具体要怎样操作，感谢！,经管之家(原人大经济论坛) I get slightly different numbers if I sort and when I do not sort for example for one group I get 481 with and 477 without sorting) xtile xc = mcap if file, cutpoints(xu) drop xx xu * this bits cuts the y variable into three groups for each group of x egen yc=xtile(btom) if file, by(xc) nq(3) * forming the final 6 groups gen gp=10*xc+yc What I then ssc should install the files in a folder of what adopath calls PLUS You can look for the files concerned by (in Stata) looking for _gxtile. panel: Check whether a data. gquantiles. . With "by", the -xtile()- makes the categorization for each by-group separately. Other way round, this is a common question, even when the I am trying to compute percentiles across distinct values of a given variable. -egen- helps us generalize to by variables and weights at the same time: sort byvar x by byvar: egen sumwgt I think what you need is the -xtile- command. I want to construct the quintiles of this variable and use the following command--as you can see I use survey data and thus apply survey weights: xtile Quintile = NetWealth [pw=surveyweight], nq(5) Then I give the following command to check what I have obtained: dtable—Createatableofdescriptivestatistics Description Quickstart Menu Syntax Options Remarksandexamples Methodsandformulas Appendix Acknowledgments References Answering this well is possible only to a very small number of people using both Stata and SAS; I am not among them. xtile, and summarize, detail. 2. I can obviously get around this by looping through the dates, but this is time-consuming. dta local outcomes mpg foreach outcome xtile() isn't ranking; it's binning. from 10 to 90), we utilize the nquantiles option (number of quantiles) option, like so: 将会使用到的命令tabulate //tab xtile //单个变量从小到大排序，均等分组 1. The latter is also available from SSC and is written by Robert Picard and me. tab income_group</p><p> 预想看到的结果应该是5个group各 • stata用xtile 文章浏览阅读8w次，点赞59次，收藏287次。STATA学习笔记：分组统计和分组回归1. Best wishes Roger Roger B Newson BSc MSc DPhil Lecturer in Medical Statistics Respiratory Epidemiology and Public Health Group National Heart and Lung Institute Imperial College London Royal Brompton Campus Room 33, Emmanuel Kaye Building 1B Manresa Road London SW3 文章浏览阅读1. 11. Sometimes you want to display the percentiles of a variable to get an idea of how values are distributed. 403 but they have random increments). xtile() as a Stata I get slightly different numbers if I sort and when I do not sort for example for one group I get 481 with and 477 without sorting) xtile xc = x, cutpoints(xu) drop xx xu * this bits cuts the y variable into three groups for each group of x egen yc=xtile(y), by(xc) nq(3) * forming the final 6 groups gen gp=10*xc+yc *****end***** Code II *****start***** pctile xu=x, nq(10) genp(xx) replace xu I had a question about xtile in Stata. 지난 몇 개의 포스팅을 통해서 STATA에서 변수를 만들때 사용 하는 명령어 gen 에 대해서 공부했습니다. Inaverticalboxplot,the𝑦axisisnumerical,andthe𝑥axisis categorical. 0. 3. If the cutpoints(varname) option is specified, it categorizes exp using the values of varname as category cutpoints. sthlp and then if that fails using your unstated operating system to look for those files. dta local outcomes mpg foreach outcome in `outcomes' { bys Skip to main content. The -xtile- problem is a clustering problem, so that we should worry about the combinatorics of possible solutions, but -xtile- sensibly ignores that. unknown egen function xtile() xtile mpg_group_`k' = mpg, nq(3) . g. gquantiles is a by-able replacement for xtile, pctile, and _pctile that offers several additional features, like computing arbitrary quantiles (and an arbitrary number), frequency counts, and more (see the examples below). Any help would be much appreciated. Gtools commands with a Stata equivalent I want to run a regression by two (or several) groups. I just need to use the "if" option in there with that code but apparently Stata does not allow if to be used with the above code. ) xtile uses all nonmissing values of the cutpoints() variable whether or not these values belong to In doing so, I am using the xtile command: sysuse auto. I have data with income variable, with weight, and I want to calculate the 5% quantiles by year. In order to get every 10th percentile (ie. (When the cutpoints() option is not used, the standard logic is true. This can, and should, be exploited. you can tabulate your expenditure vairable by the income quintiles. If you wish to create portfolios based on different categories such as different years, then we need to use bysort prefix with the command. 原标题：【空间计量教程】空间计量及Geoda、Stata、R操作(线性回归篇) 本文主要介绍空间计量及Geoda、Stata、R操作，这一期主要介绍经典线性回归内容 空间计量经济学创造性地处理了经典计量方法在面对空间数据时 xtline—Panel-datalineplots Description Quickstart Menu Syntax Optionsforgraphbypanel Optionsforoverlaidpanels Remarksandexamples References Alsosee Description If the continuous variable's distribution is independent of age and sex, then yes, in principle, you could use -xtile- for this purpose. -findit xtile2- 文章浏览阅读2. Home; Forums; Forums for Discussing Stata; General; You are not logged in. I am using Stata and investigating the variable household net wealth NetWealth). That is, -xtile()- creates a new variable that categorizes a variable by its quantiles. 3k次。gtools 是一个提供快速 Stata 命令实现的包，利用 C 插件和哈希技术加速 collapse、egen、xtile、isid 等操作，尤其在处理大量数据时性能提升显著。该包包括了如 gcollapse、gegen、gcontract、gisid 和 glevelsof 等命令，部分命令支持权重、分组、标签输出等功能，并提供了比原生 Stata 命令更 Home; Forums; Forums for Discussing Stata; General; You are not logged in. For more i Faster Stata for Group Operations This package's aim is to provide a fast implementation of various Stata commands using hashes and C plugins. Missingisdefinedas. xtile() isn't ranking; it's binning. I know > > the command of choice for this task is xtile, but Stata > doesn't allow me > > to use it with "by" like in "by city date: xtile var=income > nq(10)". Hi, I have a dataset of stock returns each month. Now I yield to no-one in I know > > the command of choice for this task is xtile, but Stata > doesn't allow me > > to use it with "by" like in "by city date: xtile It's not an official Stata -egen- function, but it is available from SSC and, if memory serves, it was written by Nick Cox. I realize that the "by" group does not work with "xtile". egen mcadecile = xtile(mcap), by(years) p(10(10)90) Am Dienstag, den 10. gquantiles is also faster than the user-written fastxtile, so an alias, There is a egen function in -egenmore- for this: . 次に、この確率四分位点を区切りとして、各々のデータが、どのグループに属しているかを示すカテゴリー変数を作成しましょう。具体的には、xtileコマンドを使います。 xtile （新しい変数）＝（基準となる変数）, nq(4) How can I now use xtile to split my data into quintiles on the (higher) industry level? As an example, suppose 1. I adapted that code to compare fastxtile with astile, and have posted the speed comparison results here (3 files: a table comparing runtimes, a log, and the code). Strange though it may seem, -xtile- doesn't try directly to equalize group frequencies. A quick look at the code would show you that _pctile is being called for each group with the weights specified as analytic weights. do" that runs a battery of tests comparing the speed of fastxtile to xtile and ensuring that fastxtile accurately matches the xtile results. That's what's explained in the references, and even if dm0095 is behind a paywall pr0054 will not be. graphboxy1y2,over(cat_var) I know the command of choice for this task is xtile, but Stata doesn't allow me to use it with "by" like in "by city date: xtile var=income nq(10)". e xtile quintile=exp[aw=weight] if-----, n(5) 2. xtile() as an egen function was only ever a user-written function downloadable via ssc inst egenmore. Weichle, Thomas Can anyone comment on the difference between the way Stata's -xtile- command creates tertiles compared to the way the SAS -proc rank- creates tertiles? And the differences in which ties are handled? centile—Reportcentileandconfidenceinterval Description Quickstart Menu Syntax Options Remarksandexamples Storedresults Methodsandformulas Acknowledgment References The egen command is widely regarded as the most effective approach for generating portfolios for various reasons. Login or Register by clicking 'Login or Register' at the top-right of this page. but the loop fails to assign ints() option is used. dta egen group = group create quantile category variables using defined cut-points in Stata. If you can't find them, then all is not lost, necessarily, as your example should yield to Stata's This is the Stata code I used to divide a Winsorised & centred variable (num_exp, denoting number of experienced managers) based on 4 quartiles & thereafter to generate the highest & lowest quartile dummies thereof:egen quartile_num_exp = xtile(WC_num_exp), n(4) gen high_quartile_numexp = 1 if quartile_num_exp==4 (1433 missing values generated); gen Stata中的`xtile`函数是一种用于将变量分成指定数量的等分组的函数。 例如，要将变量`income`分为5个等分组，可以使用以下命令： ``` xtile income_group = income, p(20 40 60 80) ``` 此命令将创建一个新变量`income_group`，其中包含5个等分组。 分组时出现unknown egen function group()问题如何解决,我在stata里对市值规模进行分组，用到以下命令：egen MV_group=xtile(市值), n(2) by(m_sort)但是报错：unknown egen function xtile()尝试着安装命令包解决：ssc install egen_more但是也不行：connection timed out -- see help r(2) for [求助] xtile 一问,<p>想把一组收入数据分成5等分， 用了如下命令- </p><p>. ssc install egenmore . 可以使用xtile命令将样本进行分位数分组。 xtile dec2 = v, nq(10) //按v分成十组 graphbox—Boxplots Description Quickstart Menu Syntax Options Remarksandexamples Methodsandformulas References Alsosee Description graphboxdrawsverticalboxplots. years. I would like to create a group variable which tells me in which quartile an observation falls into according to the value of a Stata has built-in commands -ptile- and -xtile- for calculating the quantile ranks of a variable. a Stata--用分位数分组xtile命令. 지금 블로그에서 xtile의 전반적인 사용 팁을 확인하세요. Interpretation of percentiles and percentile ranks ===== It seems to me that -xtile- gives results that are inconsistent with the method used by -pctile- for computing quantiles. Ill give the variable names below: PE = Price to equity ratio, percentiles are based on this variable date = date cusip = the stock ID. 564 workers work in 20 different industries - in the end, there should be 4 industries in each quintile based on the average earnings within these industries (no matter how many workers are in each industry). But remember that -xtile- generates quartiles, so if the variable's distribution is not independent of age and sex then the distributions of age and sex in each quartile would necessarily be different. I'm > > working in Stata 9 SE for astile比 state 官方提供的xtile命令处理速度更快。 它的高效性在数据集较大或者当分组类别被多次创建时更加明显，比如说，我们可能需要根据每个年份或者月份分别创建分组。 I am attempting to create quantiles of performance within groups of my data. Use if if you wish to exclude values less than or equal to zero. 『STATA basic』 게시판에 stata 기본 사용법 에 대한 포스팅 하고 있는 앙뚜입니다. xtile income_group = income, nq(5) </p><p>. Any other methods that can solve this problem are welcome. For instance: xtile ptile = x,nq (100*(_n-1)/_N)+1 taking advantage of _n and _N referring to position in the current by group. If the expenditure variable is 'exp' and 'weight' is the weighting variable, then to create the income quintiles type xtile quintile=exp[aw=weight], n(5) you can use the 'if' command if necessary. 이제 명령어 gen 은 아주 익숙해졌을거라고 생각합니다. calculate 5 quantiles for eac This egen function is from the egenmore package on SSC. (VPeps), group(5) and I think this is the closest to what I need. xtile mpg_group = mpg, nq(4) ``` 上述代码中，“use auto. categories; stata; quantile; quantile cut by group in data. Forums for Discussing Stata; General; You are not logged in. 问题背景我们经常使用 generate (后文简称 gen) 命令提供的 group() 函数对某个变量进行分组，产生分组变量 gg，继而基于 gg 变量进行后续的分组回归分析 In the Github repository, you will also find a file called "test_fastxtile. 282 to 2. i. For instance: xtile ptile = x,nq(100) assigns to ptile the percentile rank associated with the variable x. 分组统计（1）对一个类别变量进行统计时tabulate命令tabulate oneway//for one-way tables of frequenciestabulate twoway //for two-way tables of frequenciesgraph bar命令graph bar yvars [if] [in] [weight] [, options]*graph bar draws vertical bar cha_stata分组回归 Stata has built-in commands -ptile- and -xtile- for calculating the quantile ranks of a variable. the quantile group shares of prov - code for province (33 unique values) ecp - expenditure per capita weind - individual weight If I were to group 'epc' by national quintiles I would use the command: xtile q_epc = epc [fweight = weind], nquantiles(5) But what if I would like to generate quantile groups for each province? 执行以上命令后，Stata将使用分位数将数据分成5个组，并将分组结果存储在名为group_var的新变量中。 步骤3：查看分组结果 我们可以使用tabulate命令查看group_var的分组结果。 tabulategroup_var 执行上述命令后，Stata将会显示每个组内的观测数和百分比。 分位数分组的 Home; Forums; Forums for Discussing Stata; General; You are not logged in. Calculations are based on all non-missing values of varname. e. 作者：连玉君 (知乎 | 简书 | 码云) 连享会 最新专题 直1. What I'd really like to do is something like: sort date by date: xtile newvar = ret, nq(5) However, Stata doesn't let me combine "xtile" with "by". I have an array of 254 numbers( from 0. frame is a panel join: Join two data frames together n_narm: Count number of non missing observations pctile: Weighted quantile of type 2 (similar to Stata _pctile) statar: A package for applied research stat_binmean: Plot the mean of xtileコマンドは分位でなく、自分の指定する任意のカットポイントで変数を区切る事ができる。例えば、$$(-\infty, 100], (100, 110], (110, 120], (120, 130], (130, +\infty]$$で変数を区切りたいとする。これを行うには、新しい変数を作り、xtileのcutpointsオプションを使う。 xtileコマンドの利用. Other way round, this is a common question, even when the number of non-missing values is a multiple of the number of bins: The update consists of a single new function, -xtile()-, written by myself. I wanted to show how the overall deciles of that continuous variable varied by group. 2009, 10:43 +0100 The Unofficial Reddit Stata Community Consider going instead to The Stata I understand how to have Stata produce the, for example, 90th percentile for a group of observations: bysort type period and then @implante's answer may help Except that you evidently want to work within type period and xtile doesn't Forums for Discussing Stata; General; You are not logged in. A cookie is a small piece of data our website stores on a site visitor's hard drive and accesses each time you visit so we can improve your access to our site, better understand how you use our site, and serve you content that may be of interest to you. For more xtile creates a new variable that categorizes exp by its quantiles. clear sysuse auto. , 1 to (−∞, x[25] ], 2 to (x[25], x I am not sure whether I can do this using the xtile command. Efficiently compute percentiles, quantiles, categories, and frequency counts. 首次使用前需要 byoption—Optionforrepeatinggraphcommand3 missingspecifiesthat,inadditiontothegraphsforeachby-group,graphsbeaddedformissingvalues ofvarlist. I could be mistaken but I have noticed two possible issues with -pctile- and -xtile-: 1. And it worked but it's not practical if I need to do it for many groups. Let's first mention that -- with divisibility into 5 -- equal groups may be impossible because the number of values may not be a multiple of 5, as when a sample of 19 could at best go into 4 bins of 4 and one of 3. The issue with using xtile as a command is that we cannot create portfolios based on some categories i. Despite what you say, unequal groups are common as a result, typically because of tied values or very unequal weights. My data do contain ties and I think this is the stata中xtile用法-分组功能还可以更灵活。假设你的数据里有不同年份的记录，想每年单独分组，这时候用`by`选项就能实现。比如输入`bysort year: xtile group = sales, nq(5)`，Stata会分别对2020年、2021年、2022年的销售额各自分成五等份。这在分析面板数据时特别实 I have looked at the pctile and xtile commands but can not figure out how to make it work per date. 创建分类分组变量tabtabulate type,gen(type_dummy) ////if type=1\2\3, then gen type_dummy1 type_dummy2 type_dummy3, and all is d Learn how to use the xtile command in Stata to create quartiles, quintiles, deciles, and other user-defined xtiles. 안녕하세요. 1. ,. I understand STATA > allows one to get deciles for the full data set (in my case I used: > xtile size_decile=size1, nq(10)), but I really need to get my deciles > by year. In Stata, type -help xtile- to find out more. 文章浏览阅读2. If your Stata 13 doesn't recognise it, that is only because it has not been installed where Stata 13 can see it. Subset a dataframe based on within-group quantile. Step 1 was to generate an overall decile variable with an –xtile– command. I am trying to do something conceptually fairly simple. But observations with the same value will always be assigned to the same bin. and Stata will automatically assign numbers to each of those intervals (e. You can browse but not post. I'm working in Stata 9 SE for Windows. I also tried a second alternative which is regress if group==1 and regress if group==2. Step 2 was to make a frequency histogram. I suspect that most people will get what they need with the –twoway hist– command in Stata. 变量分组注意 如果采用sort var gen gg=group(var)分组，则按照样本量平均分组，如果里面重复值较多，则每次跑一遍程序则重新打算顺序。 如果重复值较多，建议采用xtile分组。xtile gg=var, nq(5) ，且xtile默认不会将空缺值分入组内，但是采用group则会分进去。 Exactly. Stata连享会由中山大学连玉君老师团队创办,目前累积600多篇优质推文,内容涵盖Stata语法、论文复现代码、数据分析技巧等。包含主页、直播间、知乎、公众号、B站、码云等栏目。读者可以在Stata命令窗口使用“lianxh”和“songbl”关键词快速查询相关资源。 STATA Tutorials: Creating a Grouped Variable is part of the Methodology Institute Software tutorials sponsored by a grant from the LSE Annual Fund. 8k次，点赞2次，收藏2次。本文揭示了Stata中gen命令的group()函数在处理存在重复值的分组变量时可能出现的结果不稳定性问题。通过示例，解释了group()函数的工作原理，指出其依赖于数据排序。文章提出了解决方案，包括使用xtile命令进行基于分位数的分组，以避免因重复值导致的随机 如何在stata中使用xtile命令将样本均分为多个组？ Stata 学习总结1—Stata画中国地图 以下内容均是自我学习总结感悟，希望把自己学习到的东西能总结起来，以后也方便有需要的时候查阅。 如果有更好的建议，欢迎 This website uses cookies to provide you with a better user experience. So, I tried by group: regress y x1 x2 x3. stata数据处理——分位数分组的命令分位数分组是数据处理中常用的技术，它能够将数据集按照特定的分位数切割为多个组别，适用于数据分布分析和分类。Stata 提供了多个命令来实现这一功能，下面介绍其中的三个：-pcti egen—Extensionstogenerate Description Quickstart Menu Syntax Remarksandexamples Acknowledgments References Alsosee Description From Nick Cox < [email protected] > To [email protected] Subject Re: st: how to group variables into equal number groups: Date Tue, 26 Mar 2013 15:25:56 +0000 June 03, 2019. I want to construct the quintiles of this variable and use the following command--as you can see I use survey data and thus apply survey weights: xtile Quintile = NetWealth [pw=surveyweight], nq(5) Then I give the following command to check what I have obtained: dtable—Createatableofdescriptivestatistics Description Quickstart Menu Syntax Options Remarksandexamples Methodsandformulas Appendix Acknowledgments References Stata의 xtile 명령어로 데이터 분할하기! xtile의 기본 사용 방법부터 고급 옵션까지, 통계 분석에서 어떻게 더 효율적으로 활용할 수 있는지 알려드립니다. For each month, I'd like to sort the stocks into quintiles. In doing so, I am using the xtile command: sysuse auto. But, I got a message from stata not sorted r(5). 5w次，点赞8次，收藏59次。这样每个年龄组购车的平均售价就出来了，同理还可以求中位数，标准差等等很多内容，缺点是by参数只能分组一个变量，分组两个变量就会报错，不能计算标准误，需要手动计算。OK，这样我们的数据转换就完成了，和我们用R语言做出来的一模一样哦，本章 与 state 官方命令 xtile 不同，astile 是 byable 的，意即可 以通过 bys 命令分组进行多维变量的分组生成 。 astile 处理分组运算时超级有效率。 比如说，在在使用 bys 和不使用 bys 的情况下去处理有一百万观测值和 1000 个组别的数据时，通常只有几秒钟的时间差异。 在Stata中对样本按照分位数作分样本处理时，我们可以用到 xtile 命令、 quantiles 命令，以及egen命令与cut命令的结合，提醒大家 quantiles 命令需要提前下载哦（ ssc install quantiles ）！下面我们就用例子来看看它们的用法吧~ Stata의 xtile 명령어로 데이터 분할하기! xtile의 기본 사용 방법부터 고급 옵션까지, 통계 분석에서 어떻게 더 효율적으로 활용할 수 있는지 알려드립니다. lmr mhpqce upmnnfw oqkjjs crmh optf twhud bkjnr gpgu coed iuhx ensema faxx lwvogdo fniyh