September 2013
Intermediate to advanced
114 pages
2h 51m
English
Content preview from Using OpenRefineBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Recipe 4 – transforming cell values
In Chapter 2, Analyzing and Fixing Data, we saw that OpenRefine can automatically change the contents of all cells in a column, such as trimming whitespace. In the previous recipe, we learned that clustering is another method to perform column-wide value changes. However, these operations are part of a more general mechanism for transforming cell contents. You can change the value of each cell in various complex ways. Although this looks a bit like Excel formulas, it is surprising to see how much can be done with just a little.
For instance, suppose you don't like the vertical bar as a separator in the Categories field and want to have a comma followed by a space instead. While this could be solved by first splitting ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.