1 Objective Questions |
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2 ------------------- |
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3 |
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4 .. A mininum of 8 questions here (along with answers) |
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5 |
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6 |
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7 1. What argument can be used with savefig to increase the resolution |
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8 of the plot while saving a plot. |
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9 |
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10 a. fname |
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11 #. transparency |
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12 #. dpi |
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13 #. format |
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14 |
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15 Answer: dpi |
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16 |
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17 2. The fname argument of savefig has to be always absolute path. |
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18 |
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19 a. True |
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20 #. False |
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21 |
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22 Answer: False |
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23 |
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24 3. You are right now in the directory `/home/fossee`, from the |
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25 following which one is the correct one in-order to save the plot as |
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26 svg with the filename `plot` to the directory `/home/fossee/sine/` |
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27 |
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28 a. savefig('/sine/plot.svg') |
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29 #. savefig('sine/plot.svg') |
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30 #. savefig('home/fossee/sine/plot.svg') |
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31 #. All of these |
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32 #. None of the above |
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33 |
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34 Answer: savefig('sine/plot.svg') |
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35 |
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36 4. Which is the best image format to be used with Latex documents |
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37 which savefig supports? |
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38 |
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39 a. SVG - Scalable Vector Graphics |
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40 #. EPS - Encapsulated Post Script |
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41 #. PS - Post Script |
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42 #. PNG - Portable Network Graphics |
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43 #. None of the above |
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44 |
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45 Answer: EPS - Encapsulated Post Script |
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46 |
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47 5. ``savefig('sine.png')`` saves the plot in, |
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48 |
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49 a. The root directory ``/`` (on GNU/Linux, Unix based systems) |
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50 ``c:\`` (on windows). |
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51 #. Will result in an error as full path is not supplied. |
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52 #. The current working directory. |
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53 #. Predefined directory like ``/documents``. |
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54 |
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55 Answer: The current working directory. |
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56 |
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57 6. Study the following code and tell what will happen, |
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58 :: |
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59 savefig('cosine.png',facecolor='blue') |
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60 |
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61 a. Will generate an error as plot statements are missing |
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62 #. Will generate an error as full path is not specified |
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63 #. Create a file ``cosine.png`` with blue background at the current |
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64 working directory. |
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65 #. Create a file ``cosine.png`` with blue background at a |
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66 predefined directory like ``/documents``. |
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67 |
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68 Answer: Create a file ``cosine.png`` with blue background at the |
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69 current working directory. |
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70 |
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71 7. How to save the below plot as ``sine_green_border.png`` with green |
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72 color border/edge in the current working directory. The plot is given |
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73 as, |
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74 :: |
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75 x = linspace(-5*pi,5*pi,200) |
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76 plot(x,sin(x),linewidth=2) |
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77 legend(['sin(x)']) |
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78 |
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79 a. ``savefig('sine_green_border.png',bordercolor='green')`` |
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80 #. ``savefig('sine_green_border.png',facecolor='green')`` |
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81 #. ``savefig('sine_green_border.png',edgecolor='green')`` |
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82 #. ``savefig('/sine_green_border.png',bordercolor='green')`` |
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83 |
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84 Answer: savefig('sine_green_border.png',edgecolor='green') |
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85 |
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86 8. Given the below code snippet, what does it do? |
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87 :: |
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88 x = linspace(-5*pi,5*pi,200) |
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89 plot(x,sin(x),linewidth=2) |
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90 legend(['sin(x)']) |
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91 savefig('sine.png',format='pdf',papertype='a4') |
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92 |
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93 a. Save the sine plot in file sine.png as a pdf file in page-size |
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94 A4 and saves it into the current working directory |
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95 #. Save the sine plot in file sine.png.pdf in page-size A4 into the |
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96 current working directory. |
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97 #. Save the sine plot in a file sine.png in png format with |
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98 page-size A4 in the current working directory overriding the |
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99 format argument |
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100 #. Error in filename and format mismatch. |
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101 |
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102 Answer: Save the sine plot in file sine.png as a pdf file in page-size |
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103 A4 and saves it into the current working directory |
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104 |
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105 .. #[Puneeth: Good questions, but can we use it in quiz? most of it |
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106 .. has not been taught in the tutorial.] |
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107 |
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108 Larger Questions |
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109 ---------------- |
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110 |
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111 .. A minimum of 2 questions here (along with answers) |
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112 |
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113 1. Plot a cosine plot from -2pi to 2pi in green color taking 300 |
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114 points. Title the plot as 'Cosine plot' and the legend plot with |
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115 'cos(x)'. And save the plot as a pdf file with the filename |
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116 cosine_plot. |
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117 |
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118 2. Plot tan(x) where x varies from -4pi to 4pi in red color taking 600 |
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119 points. Title the plot as 'Tan plot' and the legend plot with |
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120 'tan(x)'. And save the plot as a svg file with the filename |
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121 tangent_plot. |
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122 |
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123 |
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