#Stata substring how to
#Stata substring install
#Stata substring full
#Stata substring code

#Stata substring how to

NB: Some of these methods assume that the values don't have spaces or symbols that Stata wouldn't accept in the variable names - otherwise, assign only the variable labels and then see below how to convert labels into names. How to rename variables according to their labelsР”В«onus: How to assign variable names as their labels I would usually generate a copy and work with that, so my original variable doesn't suffer.Р”Р„n excellent read for the by: prefix is Speaking Stata: How to move step by: step, by Nick Cox.From the first AND second rows of observations That's what the condition if AQ_ATC != AQ_ATC does.Р”Р‡inally, replace back into your original variable. function, which returns a substring the part of a string. Then (by the groups just defined) you only want to add up one value (observation) per amountATC. This document briefly summarizes Stata commands useful in ECON-4570 Econometrics and ECON. I know i can use substr() to extract sub strings in stata but this. The usubstr () function has three arguments: the string, or string variable, from which we copy a. Retrieve or replace a substring of a character string via the substr and substring. generate str80 plaintiff usubstr (case,1,splitat - 1) to be followed later by compress. I created the groups taking advantage of the fact that all short (sub)strings have a missing(ID). We can rely on Stata to work out the appropriate string type when it replaces plaintiff by the desired string. The by: prefix is fundamental and very helpful, and I noticed you can use it after defining appropriate groups. If you sort the data by AQ_ATC they are arranged in such a way that the short (sub)strings are placed before corresponding long strings.

#Stata substring code

Below code that adjusts to your change and slightly changes the code (one line less): *- what you want -Р”В«ysort grou: gen s = sum(amountATC) if AQ_ATC != AQ_ATC & !missing(ID)Р”В«y grou: replace amountATC = s if missing(ID)Р”В«ysort grou: gen s = sum(amountATC) if AQ_ATC != AQ_ATCР”В«y grou: replace amountATC = s - 1 if missing(ID) With your edit the same principles apply. Stata does many things without explicit loops, precisely because commands already apply to all observations.Р”В«ysort grou AQ_ATC: gen tosum = amountATC if _n = 1 & !missing(ID) Display a substring: starting from n characters in and of m length starting from n characters in, up to the end of the string whole string minus the last character starting from a known character within the string and of m length starting from a known substring within the string and of m length. The country substring then extracts from the code variable, starting at the first. It seems as if you come from another language and you insist in using loops when not strictly necessary. OUTREG2 the ultimate tool in Stata/Latex or Word friendliness.

#Stata substring install

I also attempted looking into different egen-functions such as noccur and moss, but my connection keeps timing out when I attempt to install the packages. Then I reset 'i' to 0 and continue with the next AQ_ATC.Р”Р„t least thats how I intended for it to work, what it did in the end is set all amountATC-values to 1. Then I write 'i' into amountATC and after I iterated over the entire table for my AQ_ATC, I will have an 'i'-value that will be equal to the amount of occurences of the substring. My idea was to use a counter 'i' and increase it by 1 everytime the an AQ_ATC starts with another AQ_ATC code. My attempt looks like this: levelsof AQ_ATC, local(ATCvals) I attempted recycling the code that I had received yesterday but failed in doing so. I created the amountATC column using bysort ATC: egen amountATC = total(AQ_ATC=AQ_ATC) The partial codes do not overlap, by what I mean that if there is 'C05' there wont be another partial code 'C05A1'. What I am looking for is the count of the appearances of the shorter codes throughout the entire table.Р”Р‡or example in this case the resulting table would be ID AQ_ATC amountATC As an example, the (German) word fr is a string of length three in Stata 13, but the string length is four in Stata 14. The shorter codes are unique in the table and are substrings of the complete 8-character codes (they represent the first x characters). For instance, German umlaute are represented differently in Stata 13 and Stata 14, and this has consequences beyond the display of characters.

#Stata substring full

The count for the full 8-character AQ_ATC codes is already correct. My table looks like this: ID AQ_ATC amountATC