Stata collapse string concatenate Collapse allows you to convert your current data set to a much smaller data set of means, medians, maximums, minimums, count or percentiles (your choice of which percentile). 文章浏览阅读2. Language: Stata Requires: Stata 5. Except for the above situations where we want to combine different tables with a joint row variable (horizontally), sometimes we want to combine tables with different row variables. It was inspired by problems exactly like that in this thread, in which some or even all the components are numeric. Calculate Occurrence of String based on Codeforces. The user can set the concatenation order with sorted() option. Programming competitions and contests, programming community. gen rep78_str = string(rep78) converts 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 Details. string() string(n) is a synonym for strofreal(n) and converts numeric or missing values to strings. ). Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist. A valuable step in preparing many text data sets for analysis is to standardize the case, usually by converting everything to lower reshape works with stubnames. Multiple-key merges arise when more than one variable is required to uniquely identify the observations in your data. The following placeholder options are available in the engine: #stat#, #Stat#, and #STAT# are replaced with the lower-, title-, and upper-case name of the summary stat. In order to convert these strings to binary codes, we can individually replace each string for each drug variable as follows: replace drugA="1" if drugA=="yes" replace drugA="0" if drugA=="no" Note, that 0 and This very helpful for researchers at all levels. (union) Distinct values of varlist within the same by level are stacked together. My comment was drifting away from String concatenation and text assembly in R is handled via paste and related functions. paste converts its arguments (via as. agg ({' string_var ': ' '. If + appears between two strings, Stata concatenates them. For example, you might have student data but you really want classroom data, or you might have weekly data but you want monthly data, etc. Two methods are supported so far: (concat) Observations of varlist within the same by level are stacked together. The first solution would be better with lines like . No announcement yet. Something like this might help: tostring labno, gen(LABNO) bysort individual_id : replace LABNO = LABNO[_n-1] + "\" + LABNO if _n > 2 Nick [email protected Question. Read the options of that function for more detail. But it isn't clear what you actually want to do. With either of these commands, the syntax -collapse country contab, by As country and contab are string variables, you cannot do that. Instead of combining them using e. Follow answered Feb 16, 2012 at 15:51. Hello Stata-Users, I'm very new to stata and I've looked for this problem but seem to find only the combination of string variables not observations. Is it possible to save the old variable labels so that they can be attached to the new variables? Answer. The varlist in by varlist: may contain string variables, numeric variables, or both. join}) This particular formula groups rows by the group_var column and then concatenates the strings in the string_var column. Hi, I would like to ask a question about collapse command. If you want to convert a string to numeric and a numeric to string, see encode and decode. 1. Viewed 98k times Part of R Language Collective Collapse / concatenate / aggregate a column to a single comma separated string within each group. Join Date: Sep 2015; Posts: 26 #1 Concat function 25 Jul 2016, 12:46. gen county=state+string(number,"%02. Stata perform the same collapse as the previous command, however instead of collapsing on just the city, we could collapse on the city and whether or not you identify as a female. character) to character strings, and concatenates them (separating them by the string given by sep). Basically, + means concatenation with strings (i. Hi Gurus, based on the following examples. 160000 2. collapse replaces the dataset in memory with a new dataset of group statistics. If + appears between two numeric values, Stata adds them. String—Stringmanipulationfunctions3 Texttranslation strofreal() strofreal() convertrealtostring strtoreal() strtoreal() convertstringtoreal ustrto() ustrto 【Online Courses】⚡Getting Started with Stata: (24 lectures + 4 assignments = 5. Stata tells you this by pointing out the type mismatch. strvar itself is not modiﬁed. If string make sure the categories have the same spelling (i. problematic otherwise). udemy. variable. Create an indicator for your regions (and then label it with the string you want using the labels command) and then just use the collapse command with sum by year. e. For problems of even moderate size, tabdisp won't be especially practical. how to sum variable for group in stata, how to find mean of varaible for a gro Downloadable! Concatenation, or joining together, of strings or other values, possibly with extra punctuation such as spaces, is supported in Stata by addition of strings and by the egen function concat(), which concatenates values of variables within observations. I think this is a really easy task but somehow I don't manage to Collapse / concatenate / aggregate a column to a single comma separated string within each group. Placeholders like <varname> and <dtafile> show where user-specified values go in each language. , disability_v2, senior_v2, medicaltransport_v2, etc. This may be what you seek. Instead, you have to use first, last, firstnm, or lastnm. In this column, I discuss basic techniques for concatenating values of variables over observations, emphasizing simple Hello; I have a lengthy (10 to 12-digit) numeric identifier in my data. 238 Speaking Stata: Concatenating values over observations 3 Concatenation across variables Concatenation across variables has been supported for a long time in Stata. The This page shows examples of how one might use string related commands in STATA. Stata’s deﬁnition of a matrix includes a few details that go beyond the mathematics. Counting substrings that are two or more characters long introduces two extra twists to the problem. + is used for the concatenation of two strings. Each type of merge is explained in its relevant sections. I am trying to do this with the collapse command with no success. I’m again playing around with strings in Stata and need to combine (string) variables with (string) variables as well as strings in locals with string variables. useodd (Firstfiveoddnumbers). What I want to do is to combine multiple variables into one. You can use the paste() and paste0() functions in R to concatenate elements of a vector into a single string. Hi friends, I am trying to wrap long lines of code in my . When you generate a variable and the expression evaluates to a string, Stata creates a string variable with a storage type as long as necessary, and no longer than that. try looking at the entries in -help string functions- to learn about the various functions that would help with problems related to strings For 07 February 2021 [Sunday]Facebook: https://www. – Nick Cox. 松柏林stata 关注赞赏支持. Even though Stata can handle string variables, it is clear in many respects that numeric variables are much preferred. Whenever I concatenate, the leading zero's are dropped. Searching Statalist for mentions of dm0042 will find very many related examples. How to collapse string variables such that they appear concatenated? 1. list number odd 1. Obsid is the person id, code is the string, date is the calendar date, and n is the nth observation of individual obsid on date 'date'. Table of Contents. string variables or more generally expressions which are or which evaluate to strings) on either side. I will need to aggregate individual level data using the -collapse- command to each of these four levels. gen combinedvar=strvar1 + strvar2 Readers should note that the last line of the question is fantasy syntax; the rest would work. How to collapse string variables such that they appear concatenated? 0. Page of 1. Collapse. The topic of combining datasets is covered in quite a detail in //分类汇总 // stata 中 collapse 的用法 // // stata中的collapse命令是一种重新整理数据的有效工具，它可以将多个变量和水平的多维数据表合并成一个维度的数据表。它的语法格式如下: // // collapse [varlist] [, by (varlist)] - Merging two datasets requires that both have at least one variable in common (either string or numeric), which is also called the identifier variable. The survey allowed respondents to choose more than one answer and I would like to separate each one of the selected answers I am looking to collapse by multiple variables. 6w次，点赞6次，收藏13次。本文介绍 Stata 中 egen concat 命令的使用方法，该命令用于合并多个变量为一个字符串变量，并提供示例代码。通过此命令，用户可以方便地组合不同变量的数据。 I have a dataset in Stata where one observation is spread out over multiple rows like the table below. Hello I saw some people have asked before about how to collapse strings as the command is really for numerics, but I Title stata. Luis Pecht. Options Main generate with string variables Stata is smart. By default, the mean of one (or several) variables is created. Not least, most statistical procedures just do not accept string variables. This should also work Remarks and examples stata. As reported, it has its egen—Extensionstogenerate Description Quickstart Menu Syntax Remarksandexamples Acknowledgments References Alsosee Description Concatenation, or joining together, of strings or other values, possibly with extra punctuation such as spaces, is supported in Stata by addition of strings and by the egen function concat(), which concatenates values of Collapse/Contract Collapse. 3 if exp The non-existent command would be > > -collapse (first) org_name (sum) _, by(id)- > > instead > > save orig > duplicates drop id, force > keep id org_name > save temp_name, replace > use orig, clear > collapse (sum) _, by(id) > merge id using temp_name, sort > > (first) in collapse could also be used to priviledge the data > on one type > of The usubstr() function has three arguments: the string, or string variable, from which we copy a substring; the position of the start of the substring; and the length of the substring to be copied. For example, each agency name will be duplicated in a new variable (i. edu A common problem in data management is combining two or more variables with missing values to get a single variable with as many Concatenation, or joining together, of strings or other values, possibly with extra punctuation such as spaces, is supported in Stata by addition of strings and by the egen function concat(), which concatenates values of variables within observations. Vector arguments are recycled as needed, with zero-length arguments being recycled to "" only if recycle0 is not true or collapse String processing is fairly easy in Stata because of the many built-in string functions. I have tried several methods including adding "///" at the end of each line to continue it down (as discussed in this post), but it did not work. 2. A lot of statistics are available. It is clear that you do not really want to do what your command(s) ask Stata to do. local outcome1 "`dv'1" which makes the string manipulation explicit, but as above you don't need this extra macro. useeven (6ththrough8thevennumbers). gen strboth = strvar1 + strvar2 gen strboth2 = strvar1 + " " + strvar2 Also check out Collapse. I am trying to collapse rows that have identical variables in column "fruit", while maintaining unique columns for each "year" of recording. siivx jcwoan zssjg uqbkm ftzb lxgvfr xaclpt jgk txhm gqseh nurm hiavs ytlvf kiofxxk ezsi