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In Fun with maps in Stata I noted an error that occurs when trying to convert shapefiles from PhilGIS to Stata data files using -shp2dta- (Kevin Crow). It turns out that the column widths are more than 244 (even though the strings in the cells are not long). The easiest way to get around this [...] Continue reading Error in reading DBF Income inequality in the Philippines, as measured by the Gini coefficient, declined from 46.05 to 44.84 between 2003 and 2009.[1] Is the observed difference in the the Gini coefficient a real reduction in inequality in income distribution or is it only due to sampling variations? A friend asked me a question related to this weeks [...] Continue reading Bootstrapping Gini I just learned about -rolling- today. Thanks to a friend for asking about moving averages and standard deviations yesterday. The problem was how to generate a new variable that contains the average and standard deviation of the previous 10 period. For example, the generated data for 1961 would be the average and the standard deviation [...] Continue reading And we’re rolling, rolling; rolling on the river* In late April, I had my first encounter with .myd, .myi, and .frm files. The challenge was to read these directly from Stata so that users can easily work on the data using Stata. I was told that these are SQL databases. I initially thought that this can easily be read using a straightforward use [...] Continue reading Stata-MySQL a first encounter |
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