Stata duplicates tag. Duplicates means that all the variables concerned have identical values for In Stata, several programs are available to detect the duplicates and can also optionally drop the duplicates. duplicates report id year Duplicates in terms of id year Well, as -help duplicates- shows, a -varlist- is allowed with all of the fice commands. . -duplicates tag- watches out for unique combinations of the variables in your -varlist- and then tags with the number of other observations sharing this unique combination. I need to find and tag duplicate values in variable "date" by ISIN and also i want to tag them first or second duplicate year wise (e. I would like to go a step further and tag these such that I know which Jul 13, 2021 · Hi all, I am trying to identify cases that are duplicates on two variables "agencyname" and "statefips" but have distinct values on a third variable "agencyid". 5 . More positively, you should check out -duplicates examples-. It has a few subcommands such as report, tag, list, drop, and examples. duplicates command helps us accomplish this. The subcommand duplicates tag is used to tag the observations to examine more closely. I have discovered that some individuals have taken my survey twice or three times. The gen option determines the name of the new variable. I used the code How could it be otherwise? Thus -duplicates- is indeed irrelevant to your problem. indicates missing values): crop1 crop2 crop3 crop4 nw1 nw2 nw3 3 7 2 . Option for duplicates tag generate(newvar) is required and specifies the name of a new variable that will tag duplicates. Sep 9, 2024 · L05 — Addressing Duplicates, Merging & Exporting Regression Tables Note: Please write every command in the do-file editor unless you are asked otherwise. 3 7 . I used following two codes to tag them. Oct 8, 2019 · To create a identical copy of an observation, just type. The subcommand duplicates report quantifies the extent of the problem, 26 pairs of values of id and year. 1 to analyze survey data. Say I have the following data: clear all input str2 pos str10 name A Joe A Joe B Frank C Mike C Ted D Mike D Mike E Bill F Bill end If I want to detect Michael's specific questions and various helpful answers from Martin and others continue, but the general question here merits further comment. Jul 1, 2024 · To detect duplicate observations in Stata, one can use the “duplicates” command. We use duplicates tag, duplicates report and duplicates drop commands. g. I want "duph1"= 1 if the duplicate value of "date" is in 2006 of ISIN1 and "duph1" =2 if duplicate value of "date" is in year 2007 of firm1). An edit then gives all the details. Learn how to use duplicates tag command to create a variable that captures all the information needed to replicate any deleted observations. 5 9 . The first code is stata code Just to flesh out the issue here: -duplicates tag- tags all duplicates with the # of duplicates. . The 2 tells Stata that there should be two copies of the same observation (i. It also provides options to either mark, list, or drop the duplicate observations. Description duplicates reports, displays, lists, tags, or drops duplicate observations, depending on the subcommand specified. Aug 14, 2015 · Very nice, however I would like returning for each group the id of the first occurence - so tag should be 1, 1, 1, 4, 4, 4, 4, 8, 8, 10. Well, as -help duplicates- shows, a -varlist- is allowed with all of the fice commands. sysuse auto, clear duplicates tag head mpg, gen (dup) duplicates report headroom Oct 16, 2022 · duplicates drop删除除了每组重复观测的第一次出现外，所有重复的数据都在下降。 . In order to view the duplicated observations, we have to create a variable that records how many duplicates an observation has with duplicates tag, gen (). This command allows the user to identify duplicate observations based on specific variables or across all variables in the dataset. How to identify, tag, report and delete duplicate observations in Stata. sysuse auto, clear duplicates tag head mpg, gen (dup) duplicates report headroom Apr 6, 2014 · Following up from my question here, I am trying to replicate in R the functionality of the Stata command duplicates tag, which allows me to tag all the rows of a dataset that are duplicates in term Suppose I have a data set with 2 observations and 7 variables (where . Duplicates are observations with identical values either on all variables if no varlist is specified or on a specified varlist. Your notion of "simultaneously" is implemented in Stata by default; as soon as you type - duplicates list x y-, or -duplicates tag x y-, Stata looks for observations that have the same value of x _and_ the same value of y. If you do name a varlist, it is naturally that. Now I would like to find the number of duplicated values between Group1 (crop1-crop4) variables and Group2 (nw1-nw3) variables excluding the missing values through generating a new variable called duplicates. Your problem is different but is soluble in Stata terms if you can give exact rules for what kind of tolerance you allow _within groups of observations_. then the new data set May 31, 2017 · I read something about dropping duplicates: "duplicates drop id wave, force" but I'm not sure at all?! Try the duplicates command and compare your data before and after. The subcommand duplicates list finds that they involve id 467. Apr 2, 2021 · My data looks like below and I request for any syntax that helps to tag the duplicates sequentially starting from 1, I have highlighted the identified duplicates in a small portion of data. One of the programs is called dups. How could it be otherwise? Thus -duplicates- is indeed irrelevant to your problem. The way to use them is by combining the main command with the relevant sub-command: duplicates report, duplicates tag Description duplicates reports, displays, lists, tags, or drops duplicate observations, depending on the subcommand specified. -duplicates- looks for observations that are duplicates on a varlist. e. Please see attached Duplicates are observations with identical values on a given list of variables. You can blame me for introducing each use of the word, and thus for the inconsistency in meaning. The duplicates commands provide a way to report on, give examples of, list, browse, tag, or drop duplicate observations. -egen, tag ()- just one of each group with 1 and the others with 0. Duplicates are observations with identical values. 我们的假设得到了支持:198个观测结果是唯一的 (每个观测结果只有1个副本)，而4个观测结果是重复… Access the Stata duplicates user manual, with AI chat for quick answers and PDF download. Please find the links below for the Feb 4, 2015 · My question regards detecting duplicates. the original and the copy), which can be identified by the new variable dupindicator that is defined as 1 for the duplicate, and 0 for the original variables. It is important to spot them and then rectify or drop them from the dataset. 执行过后再用 duplicates report 查看 看到这时候就已经没有多余数据了 最后贴一下文档里的完整语法， 发布于 2021-11-04 03:05 stata命令 stata学习 Stata Sep 9, 2019 · I am using duplicates tag to check the unique fyear and cusip_m combination and the dup is the used to tag the duplicates. If you had the *OR* operator, this would be pointless. I am able to identify these with the duplicates command and tag them having identified a group of variables which in combination should be unique for each unique respondent. Mar 23, 2017 · 哈喽，诸君安。爬虫俱乐部第五届Stata编程技术培训报名已进入倒计时，进入倒计时，进入倒计时，重要的事情重复说，那重要的数据重复了怎么办呢？ 问题 在进行数据合并处理之后，通常会发现数据中会出现重复的数据，而这些重复数据是没有什么用处的，需要我们删除这些重复的值，所以在 Oct 12, 2015 · Dear Stata community, I am using Stata 13. See examples of how to check if a dataset has duplicate observations and how to list them by different variables. If you don't name a varlist, the varlist is all variables. Get assistance on reporting, tagging, and dropping duplicate observations. Program dups is not a built-in program in Stata, but can be installed over the internet using search dups (see How can I used the search command to search for programs and get additional help? for Nov 7, 2019 · Hello everyone, I am working on panel data. 4qvktt yfucj 5uf la 31u7w tijq svipl lhq7 9gkb fz