Charts that Count: how to go inflation shopping

Stephen Moore, Donald Trump's new nominee for a seat on the US Federal Reserve's Board of Governors, has proposed that the Fed follow commodity prices as a measure of inflation. There are a lot of ways to measure inflation. Sometimes people who want to nudge the Fed in a certain direction go 'inflation shopping'. They pick the inflation measure that gives them the result they need. Brendan Greeley, US editor for FT Alphaville, explains.