--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/savefig/questions.rst Sat Oct 09 03:56:06 2010 +0530
@@ -0,0 +1,118 @@
+Objective Questions
+-------------------
+
+.. A mininum of 8 questions here (along with answers)
+
+
+1. What argument can be used with savefig to increase the resolution
+ of the plot while saving a plot.
+
+ a. fname
+ #. transparency
+ #. dpi
+ #. format
+
+Answer: dpi
+
+2. The fname argument of savefig has to be always absolute path.
+
+ a. True
+ #. False
+
+Answer: False
+
+3. You are right now in the directory `/home/fossee`, from the
+ following which one is the correct one in-order to save the plot as
+ svg with the filename `plot` to the directory `/home/fossee/sine/`
+
+ a. savefig('/sine/plot.svg')
+ #. savefig('sine/plot.svg')
+ #. savefig('home/fossee/sine/plot.svg')
+ #. All of these
+ #. None of the above
+
+Answer: savefig('sine/plot.svg')
+
+4. Which is the best image format to be used with Latex documents
+ which savefig supports?
+
+ a. SVG - Scalable Vector Graphics
+ #. EPS - Encapsulated Post Script
+ #. PS - Post Script
+ #. PNG - Portable Network Graphics
+ #. None of the above
+
+Answer: EPS - Encapsulated Post Script
+
+5. ``savefig('sine.png')`` saves the plot in,
+
+ a. The root directory ``/`` (on GNU/Linux, Unix based systems)
+ ``c:\`` (on windows).
+ #. Will result in an error as full path is not supplied.
+ #. The current working directory.
+ #. Predefined directory like ``/documents``.
+
+Answer: The current working directory.
+
+6. Study the following code and tell what will happen,
+ ::
+ savefig('cosine.png',facecolor='blue')
+
+ a. Will generate an error as plot statements are missing
+ #. Will generate an error as full path is not specified
+ #. Create a file ``cosine.png`` with blue background at the current
+ working directory.
+ #. Create a file ``cosine.png`` with blue background at a
+ predefined directory like ``/documents``.
+
+Answer: Create a file ``cosine.png`` with blue background at the
+ current working directory.
+
+7. How to save the below plot as ``sine_green_border.png`` with green
+ color border/edge in the current working directory. The plot is given
+ as,
+ ::
+ x = linspace(-5*pi,5*pi,200)
+ plot(x,sin(x),linewidth=2)
+ legend(['sin(x)'])
+
+ a. ``savefig('sine_green_border.png',bordercolor='green')``
+ #. ``savefig('sine_green_border.png',facecolor='green')``
+ #. ``savefig('sine_green_border.png',edgecolor='green')``
+ #. ``savefig('/sine_green_border.png',bordercolor='green')``
+
+Answer: savefig('sine_green_border.png',edgecolor='green')
+
+8. Given the below code snippet, what does it do?
+ ::
+ x = linspace(-5*pi,5*pi,200)
+ plot(x,sin(x),linewidth=2)
+ legend(['sin(x)'])
+ savefig('sine.png',format='pdf',papertype='a4')
+
+ a. Save the sine plot in file sine.png as a pdf file in page-size
+ A4 and saves it into the current working directory
+ #. Save the sine plot in file sine.png.pdf in page-size A4 into the
+ current working directory.
+ #. Save the sine plot in a file sine.png in png format with
+ page-size A4 in the current working directory overriding the
+ format argument
+ #. Error in filename and format mismatch.
+
+Answer: Save the sine plot in file sine.png as a pdf file in page-size
+ A4 and saves it into the current working directory
+
+Larger Questions
+----------------
+
+.. A minimum of 2 questions here (along with answers)
+
+1. Plot a cosine plot from -2pi to 2pi in green color taking 300
+ points. Title the plot as 'Cosine plot' and the legend plot with
+ 'cos(x)'. And save the plot as a pdf file with the filename
+ cosine_plot.
+
+2. Plot tan(x) where x varies from -4pi to 4pi in red color taking 600
+ points. Title the plot as 'Tan plot' and the legend plot with
+ 'tan(x)'. And save the plot as a svg file with the filename
+ tangent_plot.