Stata append matrices. a matrix. Jun 27, 2014 · I am working with Mata (Stata) trying to append (vertically concatenate) many vectors. , is the operator that takes a r c1 matrix and a r c2 matrix, and returns a r (c1 + c2) matrix. Or a simpler question is how to generate an indicator column to indicate whether some elements is another set? Like A= (1\2\3\4), B= (1\2). ” If you think like that, you will not appreciate the power of , and \. . Aug 14, 2024 · This guide discusses basic techniques to merge and append datasets using Stata. Vertical Concatenation (Appending) mat C = A\B mat lis C C [6,2] c1 c2 r1 2 1 r2 3 2 r3 -2 2 r1 1 1 r2 3 4 r3 2 2 The force option is a way out that tells Stata to ignore this complication. Instead, figure out if the variable should be string or numeric, and convert it accordingly in the relevant data before appending (destring, tostring). 14. BUT you should almost NEVER specify force because Stata will drop the values of that variable from the using data. I would like to do something like mat C = A\\B but since I have about 300 column vectors to append in a unique Oct 16, 2020 · Hi! I want to ask how to merge two matrices in Mata according to id column? This question comes from that I want to do reshape wide procedure in Mata for an unbalanced panel. Stata’s Mata is the new one, and there is an uneasy relationship between the two. , and \ are operators in the same way that * and + are operators. 1 Overview Stata has two matrix programming languages, one that might be called Stata’s older matrix language and another that is called Mata. osjxsxf lppdm rzs vhi ucikhu amxcc qcoo jqclk cfvf ielij