Stata: Generate new variable with all values (e.g. not just max or min) for a group based on other variable in the group 1 How to see if all values within group are unique/identify those that aren't
I have tagged the number of occurrences of each unique anonymised id (ida) by date using the code below to give me scan number (snum). bysort ida (date): gen snum = _n 'tab snum' tell me how many individuals have had at least 1 or 2 or 3 scans but I don't know how many people have had exactly 1 or 2 or 3 scans.
2016-03-10 · Random numbers from the uniform distribution. In the example below, we use runiform () to create a simulated dataset with 10,000 observations on a (0,1)-uniform variable. Prior to using runiform (), we set the seed so that the results are reproducible. The mean of a (0,1)-uniform is .5, and the standard deviation is . Then, for observations with common var1, Stata will sort them according to var2. If there are more than 2 variables, then the observations will be sorted by the first variable first, then the second variable second, and so on. -gsort-, on the other hand, can sort the observations in either ascending or descending order.
To avoid this problem we can specify a new variable that will be a unique cluster identifier again: Tags can take two forms, either a tag applies to all text that fol Converting Panel Data into Percentiles to Observe Trends in Stata (Part 1) in running a frequency table for a continuous variable with hundreds of unique 2 Dec 2020 The correct way to handle dates in Stata is to convert them to a number identified by the combination of stn and statadate should be unique, This is just the number of observations for each individual (distinct id) for which q1 is We could tag those who use both R and Stata in this way, illustrated by 7 Mar 2012 Repeat Stata command on subsets of the data 25 cd . Report, tag, or drop duplicate observations 164 edit . tabulate(#) specifies the number of unique values of the variables to use to determine whether a variable is 21 Aug 2015 If we have converted FUNDA to Stata format, the uniqueness of GVKEY- DATADATE reveals that 99.8% of GVKEY-DATADATE pairs in FUNDQ are unique as of December 5, 2107. duplicates tag gvkey datadate, ge(dup).
The dataset is a matrix where each column is a "variable" with a unique name and each row has a number (the special variable _n). Discover how to tabulate data by one or two variables, how to create multiple oneway tables from a list of variables, and how to create all possible twoway t Course: STATA for Complete Beginners 100% FreeTo download exercises and course files access:https://bit.ly/freestatacourseIf you like our videos, please subs 2014-08-29 · /* mark duplicates using Stata’s built-in functionality */ duplicates tag ecusip_id, gen(dup_2) summ dup_2 count if dup_2 !=0 summ dup /* dup and dup_2 are different because the duplicates command marks every obs as a duplicate (e.g., both firms marked) rather than just the duplicate firm like my by hand code */ count You might consider reconfiguring the data so that your unique identifier is the ID variable.
1 Intro/Note on Notation. Coding in Python is a little different than coding in Stata. In Stata, you have one dataset in memory. The dataset is a matrix where each column is a "variable" with a unique name and each row has a number (the special variable _n).
This indicates that all observations are part of both files. If there were observations.
codebook is a great command in Stata. It describes data contents but also simply identifies unique values sysuse auto, clear codebook mpg, compact Number of unique values of mpg is 21.
Let’s see how _n and _N work. 2016-07-13 · Stata for Students: Descriptive Statistics. This article is part of the Stata for Students series. If you are new to Stata we strongly recommend reading all the articles in the Stata Basics section.
I want to add up the unique values in Stata. I applied the following command in Stata and realized afterwards that I am actually adding up duplicates as well, which is not what I intended to do. In conclusion, I want to calculate the industry market capitalization based on individual firms' unique observations in a given month that belong to this particular industry.
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Detect duplicate observations in a data set in Stata. You can check for duplicate observations in Stata in the following ways: The isid command can detect duplicate observations: . isid x1 x2 x3; The duplicates command can list and flag duplicate observations.
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2 Dec 2020 The correct way to handle dates in Stata is to convert them to a number identified by the combination of stn and statadate should be unique,
run an extract to create a data set and corresponding SAS/SPSS/STATA programs. For all variables, if will provide the variable type, # of unique values, and the duplicates tag > tabulate to determine which observations are duplicates and how.
* distinct households egen tag_hh = tag(hhid) count if tag_hh local n_hh = r(N) egen tag = tag(hhid s11211) bysort s11211 tag: gen freq = _N gen mean = string(freq/`n_hh', "%4.3f") tabdisp s11211 if tag, c(freq mean) ----- s11211 | freq mean -----+----- Buyer | 7 0.117 Collection trader | 16 0.267 Cooperative | 15 0.250 Market | 3 0.050 Middlemen | 6 0.100 Processing plant in town | 1 0.017 SHG | 1 0.017 Target crops are not sold. | 1 0.017 Trader | 19 0.317 VFC | 6 0.100 -----
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Longitudinal data Dear All, This is a very simple problem which I was able to solve very easily on Stata. I need to tag duplicate entries based on two variables. I have two variables ( villageid ( unique id's for different communities) and attendance( this has values like 1,2,3 or 4). I need to find duplicate enteries for villageid's for each attendance value, if they exist. Is there a way I can tag them ? Best Our nickname for all the ways you can connect Python and Stata is ‘PyStata‘.