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| -rw-r--r-- | core/vector/fold.xml | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/core/vector/fold.xml b/core/vector/fold.xml index ab78afc..3582198 100644 --- a/core/vector/fold.xml +++ b/core/vector/fold.xml @@ -36,6 +36,38 @@ it \emph{generates} values from existing values. + <section title="Matrix Folding"> + \ref{_fold-matrix_} folds a matrix into a vector by summing each of + the~rows. + + <template name="_fold-matrix_" + desc="Folds matrix into a vector by summing rows"> + <param name="@name@" desc="Matrix to fold" /> + <param name="@class@" desc="Iteration vector of desired length" /> + <param name="@generates@" desc="Generator name (to yield)" /> + + <param name="@yields@" desc="Yield name"> + <text></text> + </param> + + + <rate-each class="@class@" yields="@yields@" + generates="@generates@" index="k"> + <c:let> + <c:values> + <c:value name="row" type="float" set="vector" + desc="Matrix row"> + <c:value-of name="@name@" index="k" /> + </c:value> + </c:values> + + <c:sum of="row" /> + </c:let> + </rate-each> + </template> + </section> + + <section title="Matrix Generation"> \ref{_unfold-vector-grouped_} generates a matrix from a vector---% that is, it generates vectors within a vector---% |