# stata collapse string

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Re: st: collapsing string variables

var1 and var2 are string variables, while var3 is numeric. the pathogen load data is not for household level, but represents the pathogen load in waterways for a cluster of households (10-20). This works for your data here: reshape long drug , i (id drugid) drop if … > Sent: Thursday, January 09, 2014 12:44 PM > 2 1 A by Stephen Sweet andKaren Grace-Martin, Copyright © 2008–2020 The Analysis Factor, LLC. This category only includes cookies that ensures basic functionalities and security features of the website. > (4th Edition)

b 2 3 c 3 1 All rights reserved. In Stata, this can be done by using either -gen- or -egen-. boys which is the number of boys in the family. Which stat can I use to retain the 1 and 0 outputs? So I start off by verifying that. statalist@hsphsun2.harvard.edu I have a data set with a lot of strings that I want to collapse, but it seems that in general collapse doesn't place nicely with strings, particularly (firstnm) and (count). boy dummy variable is the number of boys and the sum of the girl dummy variable is the number of girls. > and than i have to draw a scatter diagram, and have to label the three families. Thanks for contributing an answer to Stack Overflow! > On principle I am ignoring your attachment. > . Jeff Meyer is a statistical consultant with The Analysis Factor, a stats mentor for Statistically Speaking membership, and a workshop instructor. Thus, it’s not possible to keep your 0’s and 1’s as separate observations. > My understanding is that this can be done using by: statements or some (i.e., 1 is first), age wt and sex are the child’s age, weight and sex. Let’s take a look at an example. Get to know Stata’s collapse command–it’s your new friend. But opting out of some of these cookies may affect your browsing experience.

(which is fine if the string variable is constant within the group and list Sometimes you have data files that need to be collapsed to be useful to you. Here is a link to an example using a bar graph. Hello, I want to generate a line graph to summarise longitudinal data with confidence limits included. numkids. Where to repeat in this Jingle Bells score? explained in the FAQ. You would like to extract some simple information but you can’t quite figure out how to do it.

In this situation I will use the population variable.

This is due to reducing the number of observations for the variable in the “by” statement to just one observation. > save orig It seems that the following works, but would also be a lot more time-consuming for my data.

As example, suppose we have the variables var1, var2, and var3. list Asking for help, clarification, or responding to other answers. Required fields are marked *, Data Analysis with SPSS Here is a simple example where string1 is > But if you had a Stata internal format monthly variable for the year and month of birth, then you would just -collapse- with that one variable in the -by()- option. If I collapse (mean) I get decimals. > 1 2 B

The values in _n==1 (line 1… Sexdum1 is the dummy variable for girls. To Oddly, although simple logic would suggest you should be able to do count of non-missing values [-collapse (count) string_var-], you can't. Collapse/Contract Collapse.

mean.

… Nick Cox

As was mentioned very recently, you should not send attachments to Statalist. Read more about Jeff here. a 1 3

Here is a file containing information about the kids in If you collapsing by 3 categorical variables the number of responses you get will be the number of categories in var1 times the number of categories in var2 times the number of categories in var3.

How do you win a simulated dogfight/Air-to-Air engagement? By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. > 2 A B C end Does this use of the perfect actually express something about the future? > i am getting We will illustrate this using an example showing how you can collapse data across kids to make family level data. -collapse- cannot calculate a statistic like mean or sd of a string variable. > nifty merging. Birth is the order of birth Statistical Consulting, Resources, and Statistics Workshops for Researchers. Date How do I get back to my original data? Is it a good idea to shove your arm down a werewolf's throat if you only want to incapacitate them? by(famid) option, x x > > I want to collapse the data so I have a single record: > > individual_id potassium sodium hdl cholesterol > 00001 x x x x > > This is fine with "typical" records, as above. Next we want to create a dataset containing the mean of gpa and hour for each year. Tagged With: collapse, graph, preserve, Stata. RTI International a 1 9 * For searches and help try: It collapses across all of the observations to make a single record with the average age of the kids. tabulate sex, generate(sexdum) collapse (sum) girls=sexdum1 boys=sexdum2, by(famid) This is explained in the FAQ. Is there any way to account for low variability in such a variable? Unlocking the Power of Stata's Macros and Loops. Please help me with the syntax. > collapse (sum) _*, by(id) I have dataset in stata and I would like to perform clustered bar graph with error bars.

Have you ever worked with a data set that had so many observations and/or variables that you couldn’t see the forest for the trees? To For example, you might have student data but you really want classroom data, or you might have weekly data but you want monthly data, I'm just being lazy here (I don't know how to generate random letters). Converting string variables with numeric values. Android Studio Collapse definitions and methods, Change bootstrap navbar collapse breakpoint without using LESS. [ (stat)] varlist [ [ (stat)] ... ] [ (stat)] target_var=varname [target_var=varname ...] [ [ (stat)] ...] or any combination of the varlist or target_var forms, and stat is one of. so the independent variable is repeated for multiple households.

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* http://www.ats.ucla.edu/stat/stata/, http://www.stata.com/support/faqs/resources/statalist-faq/. > an error message. If I use (first), then the first error clears, but (count) still fails. > 00001 72010 . free Stata webinar on Wednesday, July 29th, Stata Loops and Macros for Large Data Sets: Quickly Finding Needles in the Hay Stack, Tricks for Using Word to Make Statistical Syntax Easier, Using the Same Sample for Different Models in Stata, Using Stored Calculations in Stata to Center Predictors: an Example, https://stats.idre.ucla.edu/stata/faq/how-can-i-make-a-bar-graph-with-error-bars/, Getting Started with R (and Why You Might Want to), November Member Training: Preparing to Use (and Interpret) a Linear Regression Model, Introduction to R: A Step-by-Step Approach to the Fundamentals (Jan 2021), Analyzing Count Data: Poisson, Negative Binomial, and Other Essential Models (Jan 2021), Effect Size Statistics, Power, and Sample Size Calculations, Principal Component Analysis and Factor Analysis, Survival Analysis and Event History Analysis. > 2 2 B

If I want to keep the collapsed data I save that first and then reopen the original. The above collapse command was not very useful, but you can combine it with the Dear Clyde, Thanks again or the addition useful information. . To create one record per family (famid) with the average of age within each family. Subject Making statements based on opinion; back them up with references or personal experience. rev 2020.11.2.37934, Stack Overflow works best with JavaScript enabled, Where developers & technologists share private knowledge with coworkers, Programming & related technical career opportunities, Recruit tech talent & build your employer brand, Reach developers & technologists worldwide, Handling string variables inside collapse command.

> To create one record per family (famid) with the average of age (called avgage) and average weight (called avgwt) within each family. Necessary cookies are absolutely essential for the website to function properly. We use tabulate with the generate option to make the dummy variables.

You have to determine which variable to use. summing the dummy variables within each family. c 3 9 I have 11 variables which are yes/no answers. It is mandatory to procure user consent prior to running these cookies on your website. x x > > I want to collapse the data so I have a single record: > > individual_id potassium sodium hdl cholesterol > 00001 x x x x > > This is fine with "typical" records, as above. Fortunately Stata gives you a very simple way to weight your data based on frequency. In this case I don’t want to sum the values because they are in percent. The following collapse command does the exact same thing as above, except that the average of > Hi

Is there a name for paths that follow gridlines? . Learn to run lengthy, repetitive tasks in Stata quickly and easily by setting up these two useful Stata tools in a do-file. Please help me out. Re: st: RE: Command for Exporting graph to MS wrod.

Hello I hate the three horizontal bars on top. > message. sexdum1 is the number of girls in the family. list. > strings as the command is really for numerics, but I had trouble

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). How is this site forcing page reloads with JavaScript disabled? What prevents dragons from destroying or ruling Middle-earth? * http://www.stata.com/help.cgi?search > This helped me a lot. You can use destring random,replace and then the following works: But collapse (firstnm) name (count) random, by(mark) still generates mismatch error. David Radwin, Senior Research Associate Weighted Average in Stata's collapse command, Counting occurrences of values of string variable using collapse, Can a monster cast a higher level spell using a lower level spell slot? -- Re: st: RE: String Variable in Collapse Command. I'm just being lazy here (I don't know how to generate random letters). > when i am using the string variable in collapse command . It isn't immediately obvious whether logic suggests that (min) and (max) should be applicable to strings--they do have an ordering, but we don't typically think about them that way.

> use orig, clear There is one record per kid. I didn't know that -collapse- can be applied to string variables.

graph twoway (line Pop year) (line Jobs year), ylabel(, angle(horizontal)) We can look at the dummy variables. https://bbs.pinggu.org/forum.php?mod...=1#pid58387315, You are not logged in. Preserve We collapse our data using the “by” statement. Why can't California Proposition 17 be passed via the legislative process and thus needs a ballot measure? > > id drugid drug1 drug 2 drug 3 .

st: RE: String Variable in Collapse Command. > www.rti.org/education Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. We can list out the data to confirm that it worked correctly. I want to collapse my data by three variables, all of them have many observations repeated, but I’m having problems with the option by (var1 var2 var3) because after the moment I collapse there’s no one just 1 of the observations repeated, there’re a lot preserve > From: owner-statalist@hsphsun2.harvard.edu [mailto:owner- On principle I am ignoring your attachment.

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