GSL statistics, what is stride?
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11-06-2021 - |
Pergunta
I would like to use GSL (Gnu Scientific Lib) to calculate the standard deviation of an array. http://www.gnu.org/software/gsl/manual/html_node/Mean-and-standard-deviation-and-variance.html
In the manual, the function prototype is gsl_stats_sd (const double data[], size_t stride, size_t n)
However, I don't quite understand what the "stride" is here. Would somebody know what it is?
Thank you very much for any suggestions!
-Alfred
Solução
A stride is the separation in the array between two consecutive elements. If you have an array of double
s as the argument, then the stride would be 1.
The idea is that you can handle multiple data within a single array, and operate on different subcomponents of the array.
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