// NewFullTrace takes data you would find in a Trace and returns a
// ClusterableTrace usable for kmeans clustering.
func NewFullTrace(key string, values []float64, params map[string]string, minStdDev float64) *ClusterableTrace {
norm := make([]float64, len(values))
copy(norm, values)
vec.Fill(norm)
vec.Norm(norm, minStdDev)
return &ClusterableTrace{
Key: key,
Values: norm,
Params: params,
}
}
// fillFunc implements Func and fills in all the missing datapoints with nearby
// points.
//
// Note that a Trace with all MISSING_DATA_SENTINEL values will be filled with
// 0's.
func (FillFunc) Eval(ctx *Context, node *Node) ([]*types.PerfTrace, error) {
if len(node.Args) != 1 {
return nil, fmt.Errorf("fill() takes a single argument.")
}
if node.Args[0].Typ != NodeFunc {
return nil, fmt.Errorf("fill() takes a function argument.")
}
traces, err := node.Args[0].Eval(ctx)
if err != nil {
return nil, fmt.Errorf("fill() failed evaluating argument: %s", err)
}
for _, tr := range traces {
vec.Fill(tr.Values)
}
return traces, nil
}