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author | Puneeth Chaganti | 2010-01-10 16:43:15 +0530 |
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committer | Puneeth Chaganti | 2010-01-10 16:43:15 +0530 |
commit | 268a25c7e1721e7a0c51080dd128b68d0ad3a4d5 (patch) | |
tree | 15fd6b6def962518fdda7ebaaa455eda63533a09 /day1 | |
parent | feabb1aa4fdb4dd974c81175eefc9b1e50ee951f (diff) | |
download | workshops-more-scipy-268a25c7e1721e7a0c51080dd128b68d0ad3a4d5.tar.gz workshops-more-scipy-268a25c7e1721e7a0c51080dd128b68d0ad3a4d5.tar.bz2 workshops-more-scipy-268a25c7e1721e7a0c51080dd128b68d0ad3a4d5.zip |
Moved all day1 quiz questions to end of day1-sessions.
Diffstat (limited to 'day1')
-rwxr-xr-x | day1/cheatsheet4.tex | 2 | ||||
-rw-r--r-- | day1/session1.tex | 30 | ||||
-rw-r--r-- | day1/session2.tex | 44 | ||||
-rw-r--r-- | day1/session3.tex | 82 | ||||
-rw-r--r-- | day1/session4.tex | 95 | ||||
-rwxr-xr-x | day1/session6.tex | 127 |
6 files changed, 379 insertions, 1 deletions
diff --git a/day1/cheatsheet4.tex b/day1/cheatsheet4.tex index 7410368..70395fc 100755 --- a/day1/cheatsheet4.tex +++ b/day1/cheatsheet4.tex @@ -136,7 +136,7 @@ In above mentioned case, \typ{'::2'} means, start from first row, till last row( \begin{lstlisting} In []: C[:,::2] Out[]: -xarray([[ 1, 2], +array([[ 1, 2], [ 0, 0], [-1, 7]]) \end{lstlisting} diff --git a/day1/session1.tex b/day1/session1.tex index 779745d..92b577f 100644 --- a/day1/session1.tex +++ b/day1/session1.tex @@ -521,3 +521,33 @@ Save commands of review problem into file \end{document} +%% Questions for Quiz %% +%% ------------------ %% + +\begin{frame}[fragile] +\frametitle{\incqno } +Describe the plot produced by the following: +\begin{lstlisting} +In []: x = linspace(0, 2*pi) +In []: plot(x, cos(x), 'go') +\end{lstlisting} +\end{frame} + +\begin{frame} +\frametitle{\incqno } +How will you plot the previous graph with line width set to 3? How will +you set the $x$ and $y$ labels of the plot? +\end{frame} + +\begin{frame} +\frametitle{\incqno } +How will you set the x and y axis limits so that the region of interest +is in the rectangle $(0, -1.5)$ (left bottom coordinate) and $(2\pi, +1.5)$ (right top coordinate)? +\end{frame} + +\begin{frame} +\frametitle{\incqno } +What ipython magic command do you use to obtain the lines of code you have already typed in the interpreter? What command do you use to save them? +\end{frame} + diff --git a/day1/session2.tex b/day1/session2.tex index 12dbb58..a845d98 100644 --- a/day1/session2.tex +++ b/day1/session2.tex @@ -479,3 +479,47 @@ plot(l, tsq, '.') \end{frame} \end{document} + +%% Questions for Quiz %% +%% ------------------ %% + +\begin{frame}[fragile] +\frametitle{\incqno } + \begin{lstlisting} + In []: a = [1, 2, 5, 9] + In []: a[0:-1] + \end{lstlisting} + What is the output? +\end{frame} + +\begin{frame} +\frametitle{\incqno } + How do you combine two lists \emph{a} and \emph{b} to produce one list? +\end{frame} + +\begin{frame}[fragile] +\frametitle{\incqno } + \begin{lstlisting} + In []: a = [1, 2, 5, 9] + \end{lstlisting} + How do you add the value 10 to the end of this list? +\end{frame} + +\begin{frame} +\frametitle{\incqno } +Write the code to read a file \texttt{data.txt} and print each line of it? +\end{frame} + +\begin{frame}[fragile] +\frametitle{\incqno } +The following code snippet has an error/bug: +\begin{lstlisting} +In []: l = [0.1, 0.2, 0.3, 0.4] +In []: t = [0.69, 0.90, 1.19, 1.30] +In []: tsq = [] +In []: for time in t: + ....: tsq.append(time*time) + ....: plot(l, tsq) +\end{lstlisting} +What is the error? How do you fix it? +\end{frame} diff --git a/day1/session3.tex b/day1/session3.tex index c769fe5..2de2634 100644 --- a/day1/session3.tex +++ b/day1/session3.tex @@ -453,3 +453,85 @@ print 'Standard Deviation: ', \end{frame} \end{document} + +%% Questions for Quiz %% +%% ------------------ %% + +\begin{frame} +\frametitle{\incqno } + A sample line from a Comma Separated Values (CSV) file:\\ + \vspace*{0.2in} + \emph{Rossum, Guido, 42, 56, 34, 54}\\ + \vspace*{0.2in} + What code would you use to separate the line into fields? +\end{frame} + +\begin{frame}[fragile] +\frametitle{\incqno } + \begin{lstlisting} + In []: a = [1, 2, 5, 9] + \end{lstlisting} + How do you find the length of this list? +\end{frame} + +\begin{frame}[fragile] +\frametitle{\incqno } + \begin{lstlisting} + In [1]: d = { + 'a': 1, + 'b': 2 + } + In [2]: print d['c'] + \end{lstlisting} + What is the output? +\end{frame} + +\begin{frame}[fragile] +\frametitle{\incqno } +\begin{lstlisting} +In []: sc = {'A': 10, 'B': 20, + 'C': 70} +\end{lstlisting} +Given the above dictionary, what command will you give to plot a +pie-chart? +\end{frame} + +\begin{frame}[fragile] +\frametitle{\incqno } +\begin{lstlisting} +In []: marks = [10, 20, 30, 50, 55, + 75, 83] +\end{lstlisting} +Given the above marks, how will you calculate the \alert{mean} and +\alert{standard deviation}? +\end{frame} + +\begin{frame}[fragile] +\frametitle{\incqno } +\begin{lstlisting} +In []: marks = [10, 20, 30, 50, 55, + 75, 83] +\end{lstlisting} +How will you convert the list \texttt{marks} to an \alert{array}? +\end{frame} + +%% \begin{frame}[fragile] +%% \frametitle{\incqno } +%% \begin{lstlisting} +%% for x in "abcd": +%% print x + +%% a +%% b +%% c +%% d +%% \end{lstlisting} +%% How do you get the following output? +%% \begin{lstlisting} +%% 0 a +%% 1 b +%% 2 c +%% 3 d +%% \end{lstlisting} +%% \end{frame} + diff --git a/day1/session4.tex b/day1/session4.tex index bfff165..ddac34a 100644 --- a/day1/session4.tex +++ b/day1/session4.tex @@ -607,3 +607,98 @@ In []: plot(l, Tline) \end{frame} \end{document} + +%% Questions for Quiz %% +%% ------------------ %% + +\begin{frame}[fragile] +\frametitle{\incqno } +\begin{lstlisting} +In []: a = array([[1, 2], + [3, 4]]) +In []: a[1,0] = 0 +\end{lstlisting} +What is the resulting array? +\end{frame} + +\begin{frame}[fragile] +\frametitle{\incqno } +\begin{lstlisting} + In []: x = array(([1,2,3,4], + [2,3,4,5])) + In []: x[-2][-3] = 4 + In []: print x +\end{lstlisting} +What will be printed? +\end{frame} + +%% \begin{frame}[fragile] +%% \frametitle{\incqno } +%% \begin{lstlisting} +%% In []: x = array([[1,2,3,4], +%% [3,4,2,5]]) +%% \end{lstlisting} +%% What is the \lstinline+shape+ of this array? +%% \end{frame} + +\begin{frame}[fragile] +\frametitle{\incqno } +\begin{lstlisting} + In []: x = array([[1,2,3,4]]) +\end{lstlisting} +How to \lstinline+x+ to \lstinline+array([[1,2,0,4]])+? +\end{frame} + +\begin{frame}[fragile] +\frametitle{\incqno } +\begin{lstlisting} + In []: x = array([[1,2,3,4], + [3,4,2,5]]) +\end{lstlisting} +How do you get the following slice of \lstinline+x+? +\begin{lstlisting} +array([[2,3], + [4,2]]) +\end{lstlisting} +\end{frame} + +\begin{frame}[fragile] +\frametitle{\incqno } +\begin{lstlisting} +In []: a = array([[1, 2], + [3, 4]]) +\end{lstlisting} +How do you get the transpose of this array? +\end{frame} + +\begin{frame}[fragile] +\frametitle{\incqno } +\begin{lstlisting} +In []: a = array([[1, 2], + [3, 4]]) +In []: b = array([[1, 1], + [2, 2]]) +In []: a*b +\end{lstlisting} +What does this produce? +\end{frame} + +\begin{frame} +\frametitle{\incqno } +What command do you use to find the inverse of a matrix and its +eigenvalues? +\end{frame} + +%% \begin{frame} +%% \frametitle{\incqno } +%% The file \lstinline+datafile.txt+ contains 3 columns of data. What +%% command will you use to read the entire data file into an array? +%% \end{frame} + +%% \begin{frame} +%% \frametitle{\incqno } +%% If the contents of the file \lstinline+datafile.txt+ is read into an +%% $N\times3$ array called \lstinline+data+, how would you obtain the third +%% column of this data? +%% \end{frame} + diff --git a/day1/session6.tex b/day1/session6.tex index 0f2120f..409f07c 100755 --- a/day1/session6.tex +++ b/day1/session6.tex @@ -428,3 +428,130 @@ In []: pend_sol = odeint(pend_int, \end{frame} \end{document} + +%% Questions for Quiz %% +%% ------------------ %% + +\begin{frame} +\frametitle{\incqno } +Given a 4x4 matrix \texttt{A} and a 4-vector \texttt{b}, what command do +you use to solve for the equation \\ +\texttt{Ax = b}? +\end{frame} + +\begin{frame} +\frametitle{\incqno } +What command will you use if you wish to integrate a system of ODEs? +\end{frame} + +\begin{frame} +\frametitle{\incqno } +How do you calculate the roots of the polynomial, $y = 1 + 6x + 8x^2 + +x^3$? +\end{frame} + +\begin{frame} +\frametitle{\incqno } +Two arrays \lstinline+a+ and \lstinline+b+ are numerically almost equal, what command +do you use to check if this is true? +\end{frame} + +%% \begin{frame}[fragile] +%% \frametitle{\incqno } +%% \begin{lstlisting} +%% In []: x = arange(0, 1, 0.25) +%% In []: print x +%% \end{lstlisting} +%% What will be printed? +%% \end{frame} + + +%% \begin{frame}[fragile] +%% \frametitle{\incqno } +%% \begin{lstlisting} +%% from scipy.integrate import quad +%% def f(x): +%% res = x*cos(x) +%% quad(f, 0, 1) +%% \end{lstlisting} +%% What changes will you make to the above code to make it work? +%% \end{frame} + +%% \begin{frame} +%% \frametitle{\incqno } +%% What two commands will you use to create and evaluate a spline given +%% some data? +%% \end{frame} + +%% \begin{frame}[fragile] +%% \frametitle{\incqno } +%% What would be the result? +%% \begin{lstlisting} +%% In []: x +%% array([[0, 1, 2], +%% [3, 4, 5], +%% [6, 7, 8]]) +%% In []: x[::-1,:] +%% \end{lstlisting} +%% Hint: +%% \begin{lstlisting} +%% In []: x = arange(9) +%% In []: x[::-1] +%% array([8, 7, 6, 5, 4, 3, 2, 1, 0]) +%% \end{lstlisting} +%% \end{frame} + +%% \begin{frame}[fragile] +%% \frametitle{\incqno } +%% What would be the result? +%% \begin{lstlisting} +%% In []: y = arange(3) +%% In []: x = linspace(0,3,3) +%% In []: x-y +%% \end{lstlisting} +%% \end{frame} + +%% \begin{frame}[fragile] +%% \frametitle{\incqno } +%% \begin{lstlisting} +%% In []: x +%% array([[ 0, 1, 2, 3], +%% [ 4, 5, 6, 7], +%% [ 8, 9, 10, 11], +%% [12, 13, 14, 15]]) +%% \end{lstlisting} +%% How will you get the following \lstinline+x+? +%% \begin{lstlisting} +%% array([[ 5, 7], +%% [ 9, 11]]) +%% \end{lstlisting} +%% \end{frame} + +%% \begin{frame}[fragile] +%% \frametitle{\incqno } +%% What would be the output? +%% \begin{lstlisting} +%% In []: y = arange(4) +%% In []: x = array(([1,2,3,2],[1,3,6,0])) +%% In []: x + y +%% \end{lstlisting} +%% \end{frame} + +%% \begin{frame}[fragile] +%% \frametitle{\incqno } +%% \begin{lstlisting} +%% In []: line = plot(x, sin(x)) +%% \end{lstlisting} +%% Use the \lstinline+set_linewidth+ method to set width of \lstinline+line+ to 2. +%% \end{frame} + +%% \begin{frame}[fragile] +%% \frametitle{\incqno } +%% What would be the output? +%% \begin{lstlisting} +%% In []: x = arange(9) +%% In []: y = arange(9.) +%% In []: x == y +%% \end{lstlisting} +%% \end{frame} + |