Re: [R] Extracting values from rows which meet a condition in R 3.0.2

On 04/15/2014 06:24 AM, umair durrani wrote: Hi, I have a big data frame with millions of rows and more than 20 columns. Let me first describe what the data is to make question more clear. The original data frame consists of locations, velocities and accelerations of 2169 vehicles during a 15

[R] Extracting values from rows which meet a condition in R 3.0.2

Hi, I have a big data frame with millions of rows and more than 20 columns. Let me first describe what the data is to make question more clear. The original data frame consists of locations, velocities and accelerations of 2169 vehicles during a 15 minute period. Each vehicle has a unique Vehicl