<%@include file="includes/setup.md.rsp"%>

<%@string colname="colAlls"%>
<%@string rowname="rowAlls"%>
<%@meta title="${colname}() and ${rowname}() benchmarks"%>
<%@meta author="Henrik Bengtsson"%>
<%@meta date="2014-11-18"%>

<%@include file="${header}"%>


# <%@meta name="title"%>

This report benchmark the performance of <%=colname%>() and <%=rowname%>() against alternative methods.

## Alternative methods

* apply() + all()
* colSums() == n or rowSums() == n


## Data
```r
<%=withCapture({
<%@include file="R/random-matrices.R"%>
data <- rmatrices(mode = "logical")
})%>
```

## Results

<% for (dataLabel in names(data)) { %>
<% message(dataLabel) %>
### <%=dataLabel%> matrix


```r
<%=withCapture({
X <- data[[.dataLabel.]]
gc()

colStats <- microbenchmark(
 colAlls      = colAlls(X),
 "apply+all"  = apply(X, MARGIN = 2L, FUN = all),
 "colSums==n" = (colSums(X) == nrow(X)),
 unit = "ms"
)

X <- t(X)
gc()

rowStats <- microbenchmark(
 rowAlls     = rowAlls(X),
 "apply+all" = apply(X, MARGIN = 1L, FUN = all),
 "rowSums==n" = (rowSums(X) == ncol(X)),
 unit = "ms"
)
})%>
```

<% crBenchmarkResults(colStats, rowStats, tags=dataLabel) %>

<% } # for (dataLabel ...) %>


<%@include file="${footer}"%>


<%---------------------------------------------------------------------------
HISTORY:
2014-11-18
o Created.
---------------------------------------------------------------------------%>
