jx3p mix download

Name: jx3p mix download
Category: Soft
Published: wejateres1971
Language: English

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ENDMEMO.
R Matrix.
R matrix is a two dimensional array. R has a lot of operator and functions that make matrix handling very convenient.
Matrix row and column count:
t(A) function returns a transposed matrix of A:
Matrix subtraction (-) and division (/) operations . .
Sometimes a matrix need to be sorted by a specific column, which can be done by using order() function.
Following is a csv file example.
Following R code will read in the above file into a matrix, and sort it by column 4, then write to a output file.
Order() returns a permutation which rearranges its first argument into ascending or descending order, breaking ties by further arguments.
Usage: order(. na.last = TRUE, decreasing = FALSE)
Arguments: . a sequence of numeric, complex, character or logical vectors, all of the same length, or a classed R object.
decreasing: logical. Should the sort order be increasing or decreasing?

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