![]() See also this answer, which is very similar, and suggests postfile and statsby.įinally, check ssc describe estout, if your goal is to output regression tables. geodist can also calculate great-circle distances using the haversine formula. Use the following Stata commands for m:1 merge. mydata1 mydata3 Notice that country is the common variable in above two datasets. By default, geodist implements Vincentys (1975) formula to calculate distances on a reference ellipsoid. Let us merge the following two datasets, named mydata1 (master dataset) and mydata3 (using dataset). See help extended_fcn if you're not familiar with them. The -geonear- package at SSC, also written by Robert Picard as is -geodist-, contains an option to achieve your ultimate goal. geodist calculates geographical distances by measuring the length of the shortest path between two points along the surface of a mathematical model of the earth. Then -matrix score- does all the work of multiplying. Note that when you grab each column of the matrix -b-, turn it into a row vector and put the variable names from dataset a.dta as its column names. data we compiled a dataset in Stata format with the border-sharing dyad-year as. Use the data in a.dta and loop over the columns of matrix -b-, generating each new column of the new dataset/matrix C using -matrix score. Replace rownames = "`:word `i' of `rownames''" in `i'Įxtended macro functions are used. general result shows that the longer the border between two states. Local newnames : subinstr local names "_cons" "cons", word Although your code ends with svmat you dont spell out why you want a matrix: the main reason for wanting a Stata matrix is to manipulate it further. ![]() What you want is just a particular (one-way) table. Therefore the BACI-CEPII dataset has been converted in a Pajek format and all the. get original column names of matrix and substitute out _cons All matrices have rows and columns, even if the number of either is 1. The analysis is done using multiple software (Stata, R, and Pajek). get original row names of matrix (and row count) Append data: -append- Say you would like to stack one of your data file on top of another, then you can use the -append- command to do so. Although Stata variable names can usually start with an underscore _, 11.3 Naming conventions explains that _cons is a reserved name, and they can't be used as variable names. In this post, I demonstrate how to combine datasets into one file in two typical ways: append and merge, that are row-wise combining and column-wise combining, respectively. ![]()
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