Final Project- GroupAlytics – CSB

GroupAlytics solves the problem of acquiring useful analytics about Facebook Groups from Facebook’s unwieldy Graph API. It also expands on my ongoing durational work Productive Substitute, providing another facet to the documentation I have been compiling.

Productive Substitute:

GroupAlytics is a pipeline that strips the Graph API of all data from the life span of any Facebook Group and visualizes the users’ engagement over time in a 3D scatterplot. A user of the service can input any Facebook Group ID (found in the URL of the group) and receive useful and often enlightening analytics as well as a visualization. The order of the pipeline is Graph API -> Python -> MATLAB. I’m still working on developing and perfecting it so it is more automatic and so that the end visualization is also web-based (possibly using D3. It is interesting to compare the user engagement over time by author ID with the power law of participation, shown below.

Power Law of Participation:

Another 2D version of the visualization:
Screen Shot 2014-12-03 at 3.27.42 PM

*Thanks to Maddy Varner for helping me figure out the back-end, python side of things*

Python script that scrapes all info from the Facebook’s Graph API:

import json, collections, facebook, urllib2
'''replace token w new token'''
oauth_access_token = "CAACEdEose0cBAEZB6SNyyYCBwYyuDf4eKe14Lp88ZCHMTU8Q7mQCk559gmcNUCqksWdz2q67ygE0YvkwIbNvDDYs36QkyZC0Br3FRwHgTOLuAvjhpLUPAk3igMRrytjVtAVNO53E8mUF2dfuGK2I3ZAMuuYmqZAZACqydeRyZC1xcdcnsha8MwT2BNeIrBNEtYRfHiz0nSiCZCPi0pAZBhGc8"
graph = facebook.GraphAPI(oauth_access_token)
def get_memes():
'''get the graph'''
group = graph.get_object("231149907051192/feed", limit=999)
current = group
iteration = 0
while current != False:
saveName = "%d.json" % iteration
download_memes(current, saveName)
if "paging" in current and "next" in current["paging"]:
url = current["paging"]["next"]
page = urllib2.urlopen(url)
next = json.load(page)
next = False
iteration += 1
current = next
def download_memes(data, saveName):
print type(data)
#ok now expand all comment/like data ^______^
for post in xrange(len(data["data"])):
datum = data["data"][post]
#it's a dictionary so im just making sure the key is in the dictionary before accessing it
if "likes" in datum:
if "next" in datum["likes"]["paging"]:
excess = slurp(datum["likes"]["paging"]["next"])
print "keyerror? ", datum["likes"]["paging"]
if "comments" in datum:
if "next" in datum["comments"]["paging"]:
excess = slurp(datum["likes"]["paging"]["next"])
print "keyerror? ", datum["comments"]["paging"]
with open(saveName, 'w') as save:
save.write(json.dumps(data, sort_keys=True, indent=2))
#this crawls thru next links and then merges all the data
def slurp(next):
response = urllib2.urlopen(next)
data = json.load(response)
laterData = []
currentData = []
if "data" in data:
currentData = data["data"]
if "paging" in data and "next" in data["paging"]:
laterData = slurp(data["paging"]["next"])
if laterData != None and currentData != None:
return currentData
def combine_memes():
with open('0.json') as json_data:
root = json.load(json_data)
for i in xrange(1,17):
name = "%d.json" % i
with open(name) as lil_data:
data = json.load(lil_data)
with open("internet_lonely_ULTIMATE.json", 'w') as save:
save.write(json.dumps(root, sort_keys=True, indent=2))

Python script that takes Json file from Facebook’s Graph API and outputs both some analytics in text form and a spreadsheet of the parameterized data:

import json
import collections
import xlwt
#making sure i open the json file safely
with open('internet_lonely_ULTIMATE.json') as data_file:
# loading the json data
data = json.load(data_file)
postCount = len(data["data"])
likeCount = 0
mostLiked = 0
commentCount = 0
dates = []
posters = []
engagement = []
# im iterating thru each post in the dataset
for post in xrange(len(data["data"])):
datum = data["data"][post]
#it's a dictionary so im just making sure the key is in the dictionary before accessing it
if "likes" in datum:
likeCount += len(datum["likes"]["data"])
if (mostLiked

MATLAB code that processes the data from the spreadsheet generated in python to be visualized in the 3d scatterplot:


i = 1;
for i = 1:length(struct_psbetter)

a = struct_psbetter(i).CreatedTime;
CreatedTime_var([i],:) = cellstr(a);

b = struct_psbetter(i).PostedBy;
PostedBy_var([i],:) = cellstr(b);

c = struct_psbetter(i).Likes;
Likes_var([i],:) = c;


%duplicates and turns struct into cell array
struct_psbetterCopy = struct_psbetter;
cells_psbetter = struct2cell(struct_psbetterCopy);

%changes the 3 structs to doubles/matrices

like_counts_cell = cells_psbetter(3,:);
like_counts_mat = cell2mat(like_counts_cell);
like_counts_double = double(like_counts_mat);

%doesn't work- why converts strings to ints??
CreatedTime_cell = cells_psbetter(1,:);
CreatedTime_mat = cell2mat(CreatedTime_cell);
CreatedTime_double = double(CreatedTime_mat);

%doesn't work- why converts strings to ints??
PostedBy_cell = cells_psbetter(2,:);
PostedBy_mat = cell2mat(PostedBy_cell);
PostedBy_double = double(PostedBy_mat);

sparse_mat_CreatedTime = sparse(CreatedTime_double);
sparse_mat_PostedBy = sparse(PostedBy_double);
sparse_mat_like_counts = sparse(like_counts_double);

for i = 1:length(day)
timestamp(i) = datenum(year(i),month(i),day(i),hour(i),minute(i),second(i));
timestamp(i) = timestamp(i) * .005;

MATLAB code to automatically generate 3D scatterplot of analytics from parameterized JSON data from Facebook’s Graph API:

function createfigure(timestamp, authorid, likes)
% TIMESTAMP1: scatter3 x
% AUTHORID1: scatter3 y
% LIKES1: scatter3 z
% S1: scatter3 s
% AUTHORID2: scatter3 c

% Auto-generated by MATLAB on 03-Dec-2014 17:49:19

% Create figure
figure1 = figure;

% Create axes
axes1 = axes('Parent',figure1,'CLim',[544321851 922337203685478],...
'FontName','Caviar Dreams');
view(axes1,[50.5 38]);

% Create zlabel
zlabel('Likes (per post)','FontSize',15.4);

% Create ylabel
ylabel('Author (ID)','FontSize',15.4);

% Create xlabel
xlabel('Time (1 Year)','FontSize',15.4);

% Create title
title({' Facebook Group Analytics ? User Engagement Scatterplot'},...

% Create scatter3

Comments are closed.