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.. match(vector1, vector2) - returns an index of values; for each value in vector1 it will return the index into vector2 if there. if the element in vector1 is not found in vector2 no entry will be added to the returned index. .. e.g: a <- c(4,6,9); b <- c(1,2,3,4,5,6,7,8,9); d <- match(a,b); # d now contains 3,5,8 since indexes start from 0
GoldenCheetah
About
GoldenCheetah is an open-source data analysis tool primarily written in C++ with Qt for cyclists and triathletes with support for training as well.
GoldenCheetah can connect with indoor trainers and cycling equipment such as cycling computers and power meters to import data.
In addition, GoldenCheetah can connect to cloud services.
It can then manipulate and view the data, as well as analyze it.
Installing
Golden Cheetah install and build instructions are documented for each platform;
INSTALL-WIN32 For building on Microsoft Windows
INSTALL-LINUX For building on Linux
INSTALL-MAC For building on Apple OS X
macOS and Linux: 
Windows:
Alternatively, official builds are available from http://www.goldencheetah.org
whilst the latest developer builds are available from https://github.com/GoldenCheetah/GoldenCheetah/releases