From d5ad906e0ad2d646a2ae9cd6ea5a876623694f57 Mon Sep 17 00:00:00 2001
From: Eric Martin Feltham <eric.m.feltham@icloud.com>
Date: Thu, 2 Nov 2023 21:52:13 -0400
Subject: [PATCH 1/6] Create DataFrame.jl

dataframe from metagraph
---
 src/DataFrame.jl | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 src/DataFrame.jl

diff --git a/src/DataFrame.jl b/src/DataFrame.jl
new file mode 100644
index 0000000..66741ac
--- /dev/null
+++ b/src/DataFrame.jl
@@ -0,0 +1,44 @@
+import DataFrames.DataFrame
+
+"""
+    DataFrame(gr::T; type = :node) where T <:AbstractMetaGraph
+
+Construct a DataFrame from a MetaGraph from either its node or edge properties.
+"""
+function DataFrame(gr::T; type = :node) where T <:AbstractMetaGraph
+    fl, prps, en, nu = if type == :node
+        :node => Int[], gr.vprops, vertices, nv
+    elseif type == :edge
+        :edge => Edge[], gr.eprops, edges, ne
+      else
+        error("specify :node or :edge")
+    end
+
+    dx = DataFrame(fl)
+
+    x = unique(reduce(vcat, values(prps)))
+    for y in x
+        for (k, v) in y
+            dx[!, k] = typeof(v)[] # may be a problem if type is not consistent in y?
+            allowmissing!(dx, k)
+        end
+    end
+    
+    dx = similar(dx, nu(gr))
+
+    for (i, e) in (enumerate∘en)(gr)
+        dx[i, type] = e
+        pr = props(gr, e)
+        for (nme, val) in pr
+            dx[i, nme] = val
+        end
+    end
+
+    # remove missing when possible
+    for v in Symbol.(names(dx))
+        if !any(ismissing.(dx[!, v]))
+            disallowmissing!(dx, v)
+        end
+    end
+    return dx
+end

From 76a81586c41da58abc517c09c84bd345031e72a4 Mon Sep 17 00:00:00 2001
From: Eric Martin Feltham <eric.m.feltham@icloud.com>
Date: Thu, 2 Nov 2023 21:52:54 -0400
Subject: [PATCH 2/6] Update GraphDataFrameBridge.jl

---
 src/GraphDataFrameBridge.jl | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/GraphDataFrameBridge.jl b/src/GraphDataFrameBridge.jl
index aa50023..fb7c5b8 100644
--- a/src/GraphDataFrameBridge.jl
+++ b/src/GraphDataFrameBridge.jl
@@ -7,6 +7,8 @@ export MetaGraph, MetaDiGraph
 import MetaGraphs.MetaGraph
 import MetaGraphs.MetaDiGraph
 
+include("DataFrame.jl")
+export DataFrame
 
 function MetaGraph(
     df::T,

From 71d74fd238e0427a120b04696e37c52955c930ef Mon Sep 17 00:00:00 2001
From: Eric Martin Feltham <eric.m.feltham@icloud.com>
Date: Thu, 2 Nov 2023 21:55:18 -0400
Subject: [PATCH 3/6] Update DataFrame.jl

add description
---
 src/DataFrame.jl | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/DataFrame.jl b/src/DataFrame.jl
index 66741ac..0fd3fa6 100644
--- a/src/DataFrame.jl
+++ b/src/DataFrame.jl
@@ -4,6 +4,9 @@ import DataFrames.DataFrame
     DataFrame(gr::T; type = :node) where T <:AbstractMetaGraph
 
 Construct a DataFrame from a MetaGraph from either its node or edge properties.
+`gr` is a MetaGraph.
+`type` is a Symbol valued either :node or :edge such that the DataFrame is populated with node or edge
+properties stored in `gr`.
 """
 function DataFrame(gr::T; type = :node) where T <:AbstractMetaGraph
     fl, prps, en, nu = if type == :node

From 29aba6bf5a340e1e25670ad2f09ecc4501d48b2c Mon Sep 17 00:00:00 2001
From: Eric Martin Feltham <eric.m.feltham@icloud.com>
Date: Thu, 2 Nov 2023 21:56:54 -0400
Subject: [PATCH 4/6] Update DataFrame.jl

improve error message
---
 src/DataFrame.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/DataFrame.jl b/src/DataFrame.jl
index 0fd3fa6..ee0938b 100644
--- a/src/DataFrame.jl
+++ b/src/DataFrame.jl
@@ -14,7 +14,7 @@ function DataFrame(gr::T; type = :node) where T <:AbstractMetaGraph
     elseif type == :edge
         :edge => Edge[], gr.eprops, edges, ne
       else
-        error("specify :node or :edge")
+        error("specify type equal to :node or :edge")
     end
 
     dx = DataFrame(fl)

From 3153a2760228b939d6c88e37a69a3fe430b5333a Mon Sep 17 00:00:00 2001
From: Eric Martin Feltham <eric.m.feltham@icloud.com>
Date: Thu, 2 Nov 2023 21:57:42 -0400
Subject: [PATCH 5/6] Update DataFrame.jl

format docs
---
 src/DataFrame.jl | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/DataFrame.jl b/src/DataFrame.jl
index ee0938b..dd330f1 100644
--- a/src/DataFrame.jl
+++ b/src/DataFrame.jl
@@ -4,9 +4,11 @@ import DataFrames.DataFrame
     DataFrame(gr::T; type = :node) where T <:AbstractMetaGraph
 
 Construct a DataFrame from a MetaGraph from either its node or edge properties.
+
 `gr` is a MetaGraph.
 `type` is a Symbol valued either :node or :edge such that the DataFrame is populated with node or edge
 properties stored in `gr`.
+
 """
 function DataFrame(gr::T; type = :node) where T <:AbstractMetaGraph
     fl, prps, en, nu = if type == :node

From b5c4605aa091941113c1bc0a631822368f4947b3 Mon Sep 17 00:00:00 2001
From: Eric Martin Feltham <eric.m.feltham@icloud.com>
Date: Thu, 2 Nov 2023 21:58:48 -0400
Subject: [PATCH 6/6] Update DataFrame.jl

improve docs
---
 src/DataFrame.jl | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/DataFrame.jl b/src/DataFrame.jl
index dd330f1..79dcc29 100644
--- a/src/DataFrame.jl
+++ b/src/DataFrame.jl
@@ -6,8 +6,11 @@ import DataFrames.DataFrame
 Construct a DataFrame from a MetaGraph from either its node or edge properties.
 
 `gr` is a MetaGraph.
+
+Optional keyword arguments:
+
 `type` is a Symbol valued either :node or :edge such that the DataFrame is populated with node or edge
-properties stored in `gr`.
+properties stored in `gr`. Default is :node.
 
 """
 function DataFrame(gr::T; type = :node) where T <:AbstractMetaGraph