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77 \title[Matrices \& Curve Fitting]{Python for Science and Engg: Matrices \& Least Square Fit} |
77 \title[Matrices \& Curve Fitting]{Python for Science and Engg: Matrices \& Least Square Fit} |
78 |
78 |
79 \author[FOSSEE] {FOSSEE} |
79 \author[FOSSEE] {FOSSEE} |
80 |
80 |
81 \institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay} |
81 \institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay} |
82 \date[] {7 November, 2009\\Day 1, Session 4} |
82 \date[] {14 December, 2009\\Day 1, Session 4} |
83 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
83 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
84 |
84 |
85 %\pgfdeclareimage[height=0.75cm]{iitmlogo}{iitmlogo} |
85 %\pgfdeclareimage[height=0.75cm]{iitmlogo}{iitmlogo} |
86 %\logo{\pgfuseimage{iitmlogo}} |
86 %\logo{\pgfuseimage{iitmlogo}} |
87 |
87 |
285 In []: a = imread('lena.png') |
285 In []: a = imread('lena.png') |
286 |
286 |
287 In []: imshow(a) |
287 In []: imshow(a) |
288 Out[]: <matplotlib.image.AxesImage object at 0xa0384cc> |
288 Out[]: <matplotlib.image.AxesImage object at 0xa0384cc> |
289 |
289 |
290 In []: a.shape |
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291 Out[]: (512, 512, 4) |
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292 \end{lstlisting} |
290 \end{lstlisting} |
293 \end{small} |
291 \end{small} |
294 \begin{itemize} |
292 \begin{itemize} |
295 \item Crop the image to get the top-left quarter |
293 \item Crop the image to get the top-left quarter |
296 \item Crop the image to get only the face |
294 \item Crop the image to get only the face |
315 \end{frame} |
313 \end{frame} |
316 |
314 |
317 \begin{frame}[fragile] |
315 \begin{frame}[fragile] |
318 \frametitle{Transpose of a Matrix} |
316 \frametitle{Transpose of a Matrix} |
319 \begin{lstlisting} |
317 \begin{lstlisting} |
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318 In []: a = array([[ 1, 1, 2, -1], |
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319 ...: [ 2, 5, -1, -9], |
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320 ...: [ 2, 1, -1, 3], |
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321 ...: [ 1, -3, 2, 7]]) |
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322 |
320 In []: a.T |
323 In []: a.T |
321 Out[]: |
324 Out[]: |
322 array([[ 1, 2, 2, 1], |
325 array([[ 1, 2, 2, 1], |
323 [ 1, 5, 1, -3], |
326 [ 1, 5, 1, -3], |
324 [ 2, -1, -1, 2], |
327 [ 2, -1, -1, 2], |