colSds | R Documentation |

`colSds`

is a speed optimized `sd`

for matrix or data.frames.
It and treats each line as an independent set of data for calculating the sd (equiv to `apply(dat,1,sd)`

).
NAs are ignored from data.

```
colSds(dat, silent = FALSE, debug = FALSE, callFrom = NULL)
```

`dat` |
matrix (or data.frame) with numeric values (may contain NAs) |

`silent` |
(logical) suppress messages |

`debug` |
(logical) additional messages for debugging |

`callFrom` |
(character) allow easier tracking of messages produced |

numeric vector of sd values

`sd`

```
set.seed(2016); dat1 <- matrix(c(runif(200)+rep(1:10,20)),nc=10)
colSds(dat1)
```

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