71 % postbreak = \space\dots |
71 % postbreak = \space\dots |
72 % } |
72 % } |
73 |
73 |
74 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
74 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
75 % Title page |
75 % Title page |
76 \title[Statistics]{Python for Science and Engg: Statistics} |
76 \title[Statistics]{Python for Scienc and Engg: Statistics} |
77 |
77 |
78 \author[FOSSEE] {FOSSEE} |
78 \author[FOSSEE] {FOSSEE} |
79 |
79 |
80 \institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay} |
80 \institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay} |
81 |
81 |
150 .... g = 4 * pi * pi * l / (t * t) |
150 .... g = 4 * pi * pi * l / (t * t) |
151 .... g_list.append(g) |
151 .... g_list.append(g) |
152 \end{lstlisting} |
152 \end{lstlisting} |
153 \end{frame} |
153 \end{frame} |
154 |
154 |
155 \begin{frame} |
155 \begin{frame}[fragile] |
156 \frametitle{Computing mean ``g''} |
156 \frametitle{Mean ``g'' - Classical method} |
157 \begin{block}{Exercise} |
|
158 Obtain the mean of ``g'' |
|
159 \end{block} |
|
160 \end{frame} |
|
161 |
|
162 \begin{frame}[fragile] |
|
163 \frametitle{Mean ``g''} |
|
164 \begin{lstlisting} |
157 \begin{lstlisting} |
165 In []: total = 0 |
158 In []: total = 0 |
166 In []: for g in g_list: |
159 In []: for g in g_list: |
167 ....: total += g |
160 ....: total += g |
168 ....: |
161 ....: |
171 In []: print 'Mean: ', g_mean |
164 In []: print 'Mean: ', g_mean |
172 \end{lstlisting} |
165 \end{lstlisting} |
173 \end{frame} |
166 \end{frame} |
174 |
167 |
175 \begin{frame}[fragile] |
168 \begin{frame}[fragile] |
176 \frametitle{Mean ``g''} |
169 \frametitle{Mean ``g'' - Slightly improved method} |
177 \begin{lstlisting} |
170 \begin{lstlisting} |
178 In []: g_mean = sum(g_list) / len(g_list) |
171 In []: g_mean = sum(g_list) / len(g_list) |
179 In []: print 'Mean: ', g_mean |
172 In []: print 'Mean: ', g_mean |
180 \end{lstlisting} |
173 \end{lstlisting} |
181 \end{frame} |
174 \end{frame} |
182 |
175 |
183 \begin{frame}[fragile] |
176 \begin{frame}[fragile] |
184 \frametitle{Mean ``g''} |
177 \frametitle{Mean ``g'' - One liner} |
185 \begin{lstlisting} |
178 \begin{lstlisting} |
186 In []: g_mean = mean(g_list) |
179 In []: g_mean = mean(g_list) |
187 In []: print 'Mean: ', g_mean |
180 In []: print 'Mean: ', g_mean |
188 \end{lstlisting} |
181 \end{lstlisting} |
189 \inctime{10} |
182 \inctime{10} |
255 \end{frame} |
248 \end{frame} |
256 |
249 |
257 \subsection{Data processing} |
250 \subsection{Data processing} |
258 \begin{frame}[fragile] |
251 \begin{frame}[fragile] |
259 \frametitle{File reading and parsing \ldots} |
252 \frametitle{File reading and parsing \ldots} |
|
253 \emphbar{Reading files line by line is the same as we had done with the pendulum example.} |
|
254 |
260 \begin{lstlisting} |
255 \begin{lstlisting} |
261 for record in open('sslc1.txt'): |
256 for record in open('sslc1.txt'): |
262 fields = record.split(';') |
257 fields = record.split(';') |
263 \end{lstlisting} |
258 \end{lstlisting} |
264 \begin{block}{} |
|
265 \centerline{Recall pendulum example!} |
|
266 \end{block} |
|
267 \end{frame} |
259 \end{frame} |
268 |
260 |
269 \subsection{Dictionaries} |
261 \subsection{Dictionaries} |
270 \begin{frame}[fragile] |
262 \begin{frame}[fragile] |
271 \frametitle{Dictionaries: Introduction} |
263 \frametitle{Dictionaries: Introduction} |
272 \begin{itemize} |
264 \begin{itemize} |
273 \item lists index: 0 \ldots n |
265 \item Lists index using integers\\ |
274 \item dictionaries index using strings |
266 Recall \typ{p = [2, 3, 5, 7]} and\\ |
|
267 \typ{p[1]} is equal to \typ{3} |
|
268 \item Dictionaries index using strings |
275 \end{itemize} |
269 \end{itemize} |
276 \end{frame} |
270 \end{frame} |
277 |
271 |
278 \begin{frame}[fragile] |
272 \begin{frame}[fragile] |
279 \frametitle{Dictionaries \ldots} |
273 \frametitle{Dictionaries \ldots} |
280 \begin{lstlisting} |
274 \begin{lstlisting} |
281 In []: d = {'jpg' : 'image file', |
275 In []: d = {'png' : 'image file', |
282 'txt' : 'text file', |
276 'txt' : 'text file', |
283 'py' : 'python code'} |
277 'py' : 'python code' |
|
278 'java': 'bad code', |
|
279 'cpp': 'complex code'} |
284 |
280 |
285 In []: d['txt'] |
281 In []: d['txt'] |
286 Out[]: 'text file' |
282 Out[]: 'text file' |
287 \end{lstlisting} |
283 \end{lstlisting} |
288 \end{frame} |
284 \end{frame} |
363 print science.values() |
359 print science.values() |
364 \end{lstlisting} |
360 \end{lstlisting} |
365 \end{frame} |
361 \end{frame} |
366 |
362 |
367 \subsection{Visualizing data} |
363 \subsection{Visualizing data} |
|
364 \begin{frame}[fragile] |
|
365 \frametitle{Pie Chart} |
|
366 \begin{lstlisting} |
|
367 pie(science.values()) |
|
368 \end{lstlisting} |
|
369 \includegraphics[height=2in, interpolate=true]{data/science_nolabel} |
|
370 \end{frame} |
|
371 |
368 \begin{frame}[fragile] |
372 \begin{frame}[fragile] |
369 \frametitle{Pie chart} |
373 \frametitle{Pie chart} |
370 \small |
374 \small |
371 \begin{lstlisting} |
375 \begin{lstlisting} |
372 pie(science.values(), |
376 pie(science.values(), |
404 math_scores.append(score) |
408 math_scores.append(score) |
405 \end{lstlisting} |
409 \end{lstlisting} |
406 \end{frame} |
410 \end{frame} |
407 |
411 |
408 \subsection{Obtaining statistics} |
412 \subsection{Obtaining statistics} |
409 \begin{frame}[fragile] |
|
410 \frametitle{Obtaining statistics} |
|
411 \begin{block}{Exercise} |
|
412 Obtain the mean of Math scores |
|
413 \end{block} |
|
414 \end{frame} |
|
415 |
|
416 \begin{frame}[fragile] |
413 \begin{frame}[fragile] |
417 \frametitle{Obtaining statistics} |
414 \frametitle{Obtaining statistics} |
418 \begin{lstlisting} |
415 \begin{lstlisting} |
419 print 'Mean: ', mean(math_scores) |
416 print 'Mean: ', mean(math_scores) |
420 |
417 |