From 6dba32bf9989fbb3713d4da661984b773af878d5 Mon Sep 17 00:00:00 2001
From: Pietro Vertechi <pietro.vertechi@neuro.fchampalimaud.org>
Date: Mon, 21 Aug 2017 15:53:31 +0100
Subject: [PATCH] only check kw is at least as long as group

---
 src/series.jl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/series.jl b/src/series.jl
index 746e206d..f4f277a8 100644
--- a/src/series.jl
+++ b/src/series.jl
@@ -511,13 +511,13 @@ end
 
 # split the group into 1 series per group, and set the label and idxfilter for each
 @recipe function f(groupby::GroupBy, args...)
+    lengthGroup = maximum(union(groupby.groupIds...))
     for (i,glab) in enumerate(groupby.groupLabels)
         @series begin
             label     --> string(glab)
             idxfilter --> groupby.groupIds[i]
             for (key,val) in d
-                length(args) == 0 && break
-                if key != :group && isa(val, AbstractArray) && size(val,1) == size(args[1],1)
+                if key != :group && isa(val, AbstractArray) && size(val,1) >= lengthGroup
                     n = ndims(val)
                     :($key) := val[groupby.groupIds[i], fill(Colon(), n-1)...]
                 end