Modified files in module1.

1 files changed, 32 insertions, 49 deletions

diff --git a/using_plot_interactively/script.rst b/using_plot_interactively/script.rst
index 5de2c30..00e203a 100644
--- a/using_plot_interactively/script.rst
+++ b/using_plot_interactively/script.rst
@@ -4,7 +4,7 @@
 .. By the end of this tutorial you will --
 
 .. 1. Create simple plots of mathematical functions
-.. 2. Use features of graphical window to manipulate plots
+.. #. Use the Figure window to study plots better
 
 
 
@@ -30,26 +30,22 @@ team along with the logo of MHRD }}}
 
 Hello Friends and welcome to the tutorial on creating simple plots using
 iPython.
-I hope you have IPython installed on your computer if not, then refer to the spoken tutorial 
-on instaling ipython.
+I hope you have IPython running on your computer.
 
 .. L2
 
 {{{ Show Objective Slide }}}
 
-At the end of this tutorial, you will be able to, 
-
-   1. Create simple plots of mathematical functions.
-   2. Use features of graphical window to manipulate plots
-
-
 .. R2
 
+At the end of this tutorial, you will be able to, 
 
+   1. Create simple plots of mathematical functions.
+   #. Use the Figure window to study plots better.
 
 .. R3 
 
-To start ipython, Open the terminal and type  
+Lets start ipython.Open the terminal and type  
 ipython -pylab and hit enter.
 
 .. L3
@@ -62,31 +58,21 @@ ipython -pylab and hit enter.
 
 Pylab is a python library which provides plotting functionality.It
 provides many other important mathematical and scientific
-functions.
-After running IPython -pylab in your shell, 
-the screen will look like this.
-
-.. Pause the video for 2 sec then continue. 
-
-But instead if you get the following error like::
-
-- show the error slide
+functions. After running IPython -pylab in the shell you will see some 
+information about ipython and pylab followed by the In[1] prompt.But if you get an error like ::
 
    `ERROR: matplotlib could NOT be imported!  Starting normal
       IPython.`
 
 Then you will have to install the matplotlib and run this command again.
 
-.. Add some instruction to help user to install matplotlib.
-
 .. L4
 
 {{{ Slide with Error written on it }}}
 
 .. R5
 
-To get array of numbers we use linspace command. 
-Type 'linspace' followed by a '?' mark to get detailed documentation/help of it
+Now type 'linspace' followed by a '?' mark in your ipython shell 
              
 .. L5
 
@@ -96,9 +82,10 @@ Type 'linspace' followed by a '?' mark to get detailed documentation/help of it
 
 .. R6
 
-As the documentation says, it returns `num` evenly spaced samples,
+as the documentation says, it returns `num` evenly spaced samples,
 calculated over the interval start and stop.  To illustrate this, lets
 try to generate 100 points.Type ``linspace(1,100,100)`` and hit enter.
+As you can see a sequence of numbers from 1 to 100 appears.
 
 .. L6
 
@@ -106,11 +93,9 @@ try to generate 100 points.Type ``linspace(1,100,100)`` and hit enter.
     
     linspace(1,100,100)
 
-As you can see a sequence of numbers from 1 to 100 appears.
-
 .. R7
 
-To generate 200 points between 0 and 1, type linspace(0,1,200).
+Now lets try to generate 200 points between 0 and 1,we do that by typing  linspace(0,1,200).
 
 .. L7
 
@@ -120,10 +105,10 @@ To generate 200 points between 0 and 1, type linspace(0,1,200).
 
 .. R8
 
-Here,0 is the start , 1 is the stop and 200 is the number of points. In linspace 
+Here,0 is the start , 1 the stop and 200 the number of points.In linspace 
 the start and stop points can be integers, decimals , or constants.  
-To get 100 points between -pi to pi where 'pi' is a constant 
-defined by pylab and save the result to the variable,say p. Type p=linspace(-pi,pi,100).
+Let's try and get 100 points between -pi to pi.Here 'pi' is a constant 
+defined by pylab. Save this to the variable,say p.
            
 .. L8
 
@@ -133,7 +118,8 @@ defined by pylab and save the result to the variable,say p. Type p=linspace(-pi,
 
 .. R9
 
-To get the number of elements or points of a sequence say p type ''len(p)''
+If we now type ``len(p)``we will get the no. of points.
+``len`` function gives the no of elements of a sequence.
 
 .. L9
  
@@ -144,7 +130,7 @@ To get the number of elements or points of a sequence say p type ''len(p)''
 
 .. R10
 
-To plot a cosine curve between -pi and pi, we use the plot command.
+Let's try and plot a cosine curve between -pi and pi.For this we use the plot command.
 Here cos(p) gets the cosine value at every point
 corresponding to point p. 
 
@@ -168,7 +154,7 @@ plot function.
 
 .. R12
 
-To clear the plot, use the ``clf()`` function 
+Now to clear the plot ,we use the ``clf()`` function 
 
 .. L12 
      
@@ -178,9 +164,8 @@ To clear the plot, use the ``clf()`` function
 
 .. R13
 
-If the plot is not cleared, then any new plot will overlap the previous plot. Hence to avoid 
-cluttering the area with overlaid plots use clf() function.
- 
+This is done because if we wish to make another plot,it will overlap the previous plot.
+As we do not wish to clutter the area with overlaid plots , we just clear it with clf().  
 Now lets try a sine plot. 
 
 .. L13
@@ -191,16 +176,15 @@ Now lets try a sine plot.
 
 .. R14 
 
-We can manipulate the plot in the graphical window.
+We can study the plot better on the plot window by using the various options available on it.Let us have a look at these options.
 
 .. L14
 
-{{{ Show the slide with all the buttons on it }}}
+{{{ Show the slide 'Plot UI' }}}
 
 .. R15
 
-The location of the mouse pointer on the window is displayed in bottom right corner of the window.
-By moving the mouse pointer the location of each point is seen.
+As we can observe, moving the mouse pointer along the plot gives us the location of each point on the plot 
 
 .. L15
 
@@ -210,9 +194,9 @@ By moving the mouse pointer the location of each point is seen.
 
 To the bottom left of the window,there are a few buttons.The right most among them is
 for saving the file. 
-Just click on it and type the file name in the box provided. We will save the plot 
+Just click on it and type the file name. We will save the plot 
 by the name `sin_curve` in pdf format.As you can see we can specify the format 
-of file from the dropdown. Formats like png ,eps ,pdf, ps are also available.
+of file from the dropdown.Formats like png ,eps ,pdf, ps are available.
 
 .. L16
 
@@ -267,8 +251,7 @@ The last one is 'home' referring to the initial plot.
 
 .. R22
 
-Pause the video and do this exercise. Resume the video once done.
-
+Pause the video here, try out the following exercise and resume the video.
 
       Plot (sin(x)*sin(x))/x.
 
@@ -278,7 +261,7 @@ Pause the video and do this exercise. Resume the video once done.
 
 .. L23
 
-{{{ Summary Slide }}}
+{{{ Switch to the Summary Slide }}}
 
 .. R23
 
@@ -287,9 +270,9 @@ Let's revise quickly what we have learnt today
   1. To Start Ipython with pylab. 
   #. To Use the linspace function to create `num` equally spaced points in a region.
   #. To Find the length of sequnces using len function.
-  #. To Plot mathematical functions using plot function.
-  #. To Clear drawing area using clf function. 
-  #. Manipulate the plot in the window itself by using functionalities like save, zoom, move, home, arrow buttons. 
+  #. To Plot mathematical functions using plot.
+  #. To Clear drawing area using clf. 
+  #. To Use the UI of plot for studying it better and using functionalities like save,zoom and moving the plots on x and y axis. 
 
 .. L24
 
@@ -315,7 +298,7 @@ And the answers,
 
 2. We use `clf()` function to clear a figure.
     
-3. `len(sequence\_name)` is the function used to find out the length of a sequence.
+3. `len(sequence_name)` is the function used to find out the length of a sequence.
 
 .. L26