Finished week 9 alexander tsankov

12tone.py

@@ -0,0 +1,111 @@
+#!/usr/bin/env python
+
+"""
+12tone.py -- print 12-tone matrix
+
+  Copyright (c) 2004 L. Peter Deutsch.  All rights reserved.
+  See below for copying permission.
+
+  This program prints the matrix of transposed prime and inverted rows
+  derived from a 12-tone row.  Its usage is:
+"""
+USAGE = 'Usage: python 12tone.py note1 ... note12 > matrix.txt'
+"""
+  Each note is a letter A..G (upper or lower case) optionally followed by a
+  # or + for sharp or a &, b, or - for flat.  There must be exactly 12
+  notes with no repetitions of the same pitch.
+
+  The matrix always uses sharps to indicate displaced tones.  As usual, the
+  original row is the top row, and its inversion is the left column.
+
+  Example of usage (with a row by Dalla Piccola):
+
+  	python 12tone.py A# B D# F# G# D Db G C A E > matrix.txt
+
+  ---------------- Copying permission ----------------
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  If you redistribute modified sources, we would appreciate that you include
+  in them history information documenting your changes.
+"""
+
+import sys
+from cStringIO import StringIO
+
+PITCH2NOTE = ('C', 'C#', 'D', 'D#', 'E', 'F', 'F#', 'G', 'G#', 'A', 'A#', 'B')
+NOTE2PITCH = {'C': 0, 'D': 2, 'E': 4, 'F': 5, 'G': 7, 'A': 9, 'B': 11}
+ACCDELTA = {'#': 1, '+': 1, '&': -1, 'b': -1, '-': -1}
+
+def formatRow(items, sepr = '|'):
+    buf = StringIO()
+    buf.write(sepr)
+    for item in items:
+        buf.write(item.rjust(3) + ' ' + sepr)
+    return buf.getvalue()
+
+def pitch(row, rownum, colnum):
+    return (row[colnum] + row[0] - row[rownum] + 12) % 12
+
+def interval(lower, upper):
+    diff = upper - lower
+    if diff < 0: diff += 12
+    return diff
+
+def printMatrix(row):
+    print
+    rule = '    +' + 12 * '----+'
+    top = '    ' + formatRow(map(lambda p: str(interval(row[0], p)), row), ' ')
+    print top
+    print rule
+    for i in range(12):
+        notes = map(lambda j: PITCH2NOTE[pitch(row, i, j)].ljust(2), range(12))
+        label = ' %2d ' % interval(row[0], pitch(row, i, 0))
+        print label + formatRow(notes) + label
+        print rule
+    print top
+
+def main():
+    args = sys.argv[1:]
+    if len(args) != 12:
+        print USAGE
+        return
+    row = []
+    for note in args:
+        try:
+            if len(note) == 1:
+                pitch = NOTE2PITCH[note.upper()]
+            elif len(note) == 2:
+                pitch = NOTE2PITCH[note[0].upper()] + ACCDELTA[note[1]]
+            else:
+                pitch = {}[note]        # causes KeyError
+        except KeyError:
+            print 'Invalid note:', note
+            return
+        if not 0 <= pitch < 12:
+            print 'Invalid note:', note
+            return
+        row.append(pitch)
+    copy = row[:]
+    copy.sort()
+    if copy != range(12):
+        print 'Duplicate note(s) not allowed'
+        return
+    printMatrix(row)
+
+if __name__ == '__main__':
+    main()

README.md

@@ -1,76 +1,76 @@
 # Name
 
-write-your-name
+Alexander Tsankov
 
 # How many points have you earned?
 
-0/100
+100/100
 
 (Make your own calculation and replace the number 0 with the points you think you've earned.)
 
 # How many hours have you spent on this?
 
-fill-in-your-answer
+5
 
 # When did you first start working on this week's learning challenges?
 
-fill-in-your-answer
+Saturday (10/25/14)
 
 # What is the most difficult part about this week's challenge?
 
-fill-in-your-answer
+Getting started with the mongodb queries. Th is some weird syntax and really different from general SQL. 
 
 # Show and tell (8 points)
 
 ## Link (2 points)
 
-[title-of-the-article](http://link-to-an-article-about-machine-learning-use-for-big-data)
+[Rise of the thinkbots](http://www.pcworld.com/article/2839092/big-data-digest-rise-of-the-thinkbots.html)
 
 ## Discuss how you may apply the machine learning technique mentioned in this article to another interesting problem (6 points).
 
-fill-in-your-answer
+We can use information about how users interact with a webpage to customize dashboards on the fly. I think the idea of making custom UIs tailored to individuals would be very useful across multiple domains. 
 
 # D3 IV
 
 ## Checkpoints (3 points x 4 = 12 points)
 
 # 1. (3 points)
 
-![image](image.png?raw=true)
+![image](checkpoint-1.png)
 
-[checkpoint](checkpoint.html)
+[checkpoint](checkpoint-1.html)
 
 # 2. (3 points)
 
-![image](image.png?raw=true)
+![image](checkpoint-2.png)
 
-[checkpoint](checkpoint.html)
+[checkpoint](checkpoint-2.html)
 
 # 3. (3 points)
 
-![image](image.png?raw=true)
+![image](checkpoint-3.png)
 
-[checkpoint](checkpoint.html)
+[checkpoint](checkpoint-3.html)
 
 # 4. (3 points)
 
-![image](image.png?raw=true)
+![image](checkpoint-4.png)
 
-[checkpoint](checkpoint.html)
+[checkpoint](checkpoint-4.html)
 
 ## Challenges (4 points x 3 = 12 points)
 
 # 1. (4 points)
 
-![image](image.png?raw=true)
+![image](d3-challenge-1.png)
 
 # 2. (4 points)
 
-![image](image.png?raw=true)
+![image](d3-challenge-2.png)
 
 # 3. (4 points)
 
-![image](image.png?raw=true)
+![image](d3-challenge-3.png)
 
 [challenge3](challenge3.html)
 
@@ -82,89 +82,89 @@ fill-in-your-answer
 
 ### 1 (6 points)
 
-[mongodb js code collecting github events about our course](mongodb-github.js)
+[mongodb js code collecting github events about our course](mon-checkpoint-1.js)
 
 ### 2 (6 points)
 
-![terminal output of mongodb query](screenshot.png?raw=true)
+![terminal output of mongodb query](mon-checkpoint-2.png)
 
 ## Challenge 1 (4 points x 10 = 40 points)
 
 ### 1 (4 points)
 
-> db.course_events.[complete this query]
+> db.course_events.findOne({'actor.login':'antsankov'})
 
-![screenshot](screenshot.png?raw=true)
+![screenshot](m-challenge-1.png)
 
 ### 2 (4 points)
 
-> db.course_events.[complete this query]
+> db.course_events.findOne({'actor.login':'doubleshow'},{'actor' :1})
 
-![screenshot](screenshot.png?raw=true)
+![screenshot](m-challenge-2.png)
 
 ### 3 (4 points)
 
-> db.course_events.[complete this query]
+> db.course_events.find({'actor.login': {$in :['doubleshow','chrisbopp']}},{'actor.login' :1},{'created_at':1})
 
-![screenshot](screenshot.png?raw=true)
+![screenshot](m-challenge-3.png)
 
 ### 4 (4 points)
 
-> db.course_events.[complete this query]
+> db.course_events.findOne({'type':'PushEvent'})
 
-![screenshot](screenshot.png?raw=true)
+![screenshot](m-challenge-4.png)
 
 ### 5 (4 points)
 
-> db.course_events.[complete this query]
+> db.course_events.find({'type': 'PushEvent'},{'payload.commits.author.name': 1} )
 
-![screenshot](screenshot.png?raw=true)
+![screenshot](m-challenge-5.png)
 
 ### 6 (4 points)
 
-> db.course_events.[complete this query]
+> db.course_events.findOne({'type' : 'IssuesEvent'}, {'payload':1})
 
-![screenshot](screenshot.png?raw=true)
+![screenshot](m-challenge-6.png)
 
 ### 7 (4 points)
 
-> db.course_events.[complete this query]
+> db.course_events.find({'type' : 'IssuesEvent'}, {'payload.issue.user.login':1})
 
-![screenshot](screenshot.png?raw=true)
+![screenshot](m-challenge-7.png)
 
 ### 8 (4 points)
 
-> db.course_events.[complete this query]
+> db.course_events.find({'type' : { $in:['IssuesEvent']},'payload.issue.state' : 'closed'}, {'payload.issue.title':1 , 'payload.issue.state':1})
 
-![screenshot](screenshot.png?raw=true)
+![screenshot](m-challenge-8.png)
 
 ### 9 (4 points)
 
-> db.course_events.[complete this query]
+> db.course_events.find({'type' : { $in:['IssuesEvent']},'payload.issue.state' : 'open'}, {'payload.issue.user.login':1 , 'payload.issue.state':1})
 
-![screenshot](screenshot.png?raw=true)
+![screenshot](m-challenge-9.png)
 
 ### 10 (4 points)
 
-> db.course_events.[complete this query]
+> db.course_events.find({'type' : { $in:['IssuesEvent']},'payload.issue.comments' : {$gt : 0} }, {'payload.issue.user.login':1 , 'payload.issue.comments':1})
 
-![screenshot](screenshot.png?raw=true)
+![screenshot](m-challenge-10.png)
 
 
 ## Challenge 2 (8 points x 2 = 16 points) 
 
 ### 1 (8 points)
 
-{question-in-plain-English}
+What is the most commented issue in the data set? The query below answers this question by sorting the issues by their number of comments with most commented on the top 
 
-> db.course_events.[complete this query]
+> db.course_events.find({'type' : { $in:['IssuesEvent']},'payload.issue.comments' : {$gt : 0} }, {'payload.issue.user.login':1 , 'payload.issue.comments':1}).sort({'payload.issue.comments' : -1})
 
-![screenshot](screenshot.png?raw=true)
+![screenshot](m-challenge-11.png)
 
 ### 2 (8 points)
 
-{question-in-plain-English}
+Which members of the class have gravatars tied ot their github account? This query lists users who have interacted with the repos who have gravitar ids. 
 
-> db.course_events.[complete this query]
+> db.course_events.find({'actor.gravatar_id':{$exists: true}}, {'actor.login':1})
 
-![screenshot](screenshot.png?raw=true)
+![screenshot](m-challenge-12.png)