> setup as is and what I need to do. end My point was basically that one can leverage the built-in Stata functions encode/decode to allow gtools to collapse strings (albeit not blazingly fast, since encode/decode are themselves a little slow) without needing to rewrite any C code at all. 877-272-8096 Contact Us. Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org. Hi, in my do-file I always have the statement for opening the original file. Is there any way to account for low variability in such a variable? > 1 A B collapse (mean) avgage=age avgwt=wt (count) numkids=birth, by(famid) Counts the number of boys and girls in each family by using tabulate to create dummy variables based on sex and then summing the dummy variables within each family. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. If I want to keep the collapsed data I save that first and then reopen the original. 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? > following the code examples. Any idea on how to reduce or merge them like ubuntu 16? What if I wanted to see some trend information, such as the total population and jobs per decade for all of Alabama? Re: st: RE: String Variable in Collapse Command. Is it a good idea to shove your arm down a werewolf's throat if you only want to incapacitate them? I'm trying to collapse only a subset of my data using if, but it seems to be dropping / collapsing much more than I expect.. With every other command with which I have used an if qualifier, the command applies only to the subset of the data that meets the if criteria and leaves the rest of the data alone.. For example, replace does not alter the data for which foreign != 1: Here is a simple example where string1 is As a result, the variables that are being collapsed are summarized in some manner. To It is mandatory to procure user consent prior to running these cookies on your website. For each of the unique groups you will get the statistical result that you specify after the collapse command. How you do that will depend on whether your year and month variables are numeric or string, so, again, without example data, specific advice cannot be given. Re: st: collapsing string variables variable. Thus, it’s not possible to keep your 0’s and 1’s as separate observations. Phone: 510-665-8274 How do you win a simulated dogfight/Air-to-Air engagement? David But opting out of some of these cookies may affect your browsing experience. To concatenate is to join the characters of 2 or more variables from end to end. Sexdum1 is the dummy variable for girls. > 1 1 A I want results that I can copy and paste into a Word document. * http://www.stata.com/help.cgi?search Why can't California Proposition 17 be passed via the legislative process and thus needs a ballot measure? You also have the option to opt-out of these cookies. Running collapse command in Stata without losing key variables? > use orig, clear sexdum1 is the number of girls in the family. > -----Original Message----- This is much liking creating statistics for groups of cases, but by collapsing your data a new data set is created that contains these statistics and can be put to further use. From 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). [Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] I want to collapse on "mark", which is simple enough with replace and subscripts. "Radwin, David"
I have 11 variables which are yes/no answers. . (4th Edition)
collapse (firstnm) string1 (mean) num2, by(num1) Fortunately Stata gives you a very simple way to weight your data based on frequency. We collapse our data using the “by” statement. This category only includes cookies that ensures basic functionalities and security features of the website. > Re: st: RE: Command for Exporting graph to MS wrod. [Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] list 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. 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). > duplicates drop id, force I have dataset in stata and I would like to perform clustered bar graph with error bars. age and for wt all in the same command. By starting my code with the preserve command it brings my data set back to its original state after providing me with the results I want. Is there a solution that avoids an additional by operation? From drop if missing(drug) a 1 3 I am using a logit model where the dependent variable is risk of infection (high/low) and independent variables are gender, age, income, and pathogen load. the pathogen load data is not for household level, but represents the pathogen load in waterways for a cluster of households (10-20). (which is fine if the string variable is constant within the group and You can call what you want collapsing if you like but it's not among > This example shows you how to use the collapse command to generate the standard deviation of your variable of interest and then generate the confidence interval. Necessary cookies are absolutely essential for the website to function properly. (Shadow Fey Enchantress). Subject > 00001 72010 . Re: st: collapsing string variables. This can only be done if there are never two conflicting values for the same diag* variable among the observations for a given patid clmid fstdt combination. I’m currently looking at a longitudinal data set filled with economic data on all 67 counties in Alabama. by(famid) option, * Oddly, although simple logic would suggest you should be able to do count of non-missing values [-collapse (count) string_var-], you can't. Hi! etc. recently, you should not send attachments to Statalist. > id drugid drug1 drug 2 drug 3 > merge id using temp_name, sort 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). Consider the collapse command below. All rights reserved. Get to know Stata’s collapse command–it’s your new friend. Edit: I should have generated better data. Date > save temp_name, replace > statalist@hsphsun2.harvard.edu] On Behalf Of Sadia Khalid * http://www.stata.com/support/faqs/resources/statalist-faq/ I attached an excel sheet showing my data What prevents dragons from destroying or ruling Middle-earth? wrote: Tagged With: collapse, graph, preserve, Stata. > What is a proper way to support/suspend cat6 cable in a drop ceiling? As example, suppose we have the variables var1, var2, and var3. a 1 5 We will use this file for showing how to collapse data across observations. > 2 1 A the purposes of the -collapse- command, which is to make a dataset of Please note that, due to the large number of comments submitted, any questions on problems related to a personal study/project. I'm just being lazy here (I don't know how to generate random letters). Five time periods by 67 counties give me a total of 335 observations. This is a fast option to Stata's collapse, with several additions. Please help me with the syntax. 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) . It collapses across all of the observations to make a single record with the average age of the kids. These cookies will be stored in your browser only with your consent. This command gets the average of age Subject collapse (p25) gpa [fw=number], by(year) We used frequency weights. birth). collapse (sum) Pop Jobs, by(year) graph twoway (line Pop year) (line Jobs year), ylabel(, angle(horizontal)) What if I want to look at variables that are in percentages, such as percent of college graduates, mobility and labor force participation rate (lfp)? boy dummy variable is the number of boys and the sum of the girl dummy variable is the number of girls. Here is a simple example where string1 is constant within num1 : input str1 string1 num1 num2 a 1 5 a 1 3 a 1 9 b 2 0 b 2 4 b 2 3 c 3 1 … explained in the FAQ. Re: st: collapsing string variables . Converting string variables with numeric values. > I saw some people have asked before about how to collapse
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