--- a/savefig/script.rst Wed Nov 17 23:24:57 2010 +0530
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,163 +0,0 @@
-.. Objectives
-.. ----------
-
-.. At the end of this tutorial, you will be able to
-
-.. 1. Save plots using ``savefig()`` function.
-.. #. Save plots in different formats.
-
-
-.. Prerequisites
-.. -------------
-
-.. 1. should have ``ipython`` and ``pylab`` installed.
-.. #. getting started with ``ipython``.
-.. #. using plot command interactively.
-
-.. Author : Anoop Jacob Thomas <anoop@fossee.in>
- Internal Reviewer : Puneeth
- External Reviewer :
- Language Reviewer : Bhanukiran
- Checklist OK? : <10-11-2010, Anand, OK> [2010-10-05]
-
-.. #[Puneeth: Quickref missing.]
-
-=======
-Savefig
-=======
-
-{{{ Show the first slide }}}
-
-Hello and welcome to the tutorial saving plots.
-
-{{{ switch to next slide, outline slide }}}
-
-In this tutorial you will learn how to save plots using Python, saving
-in different formats, and locating the file in the file system.
-
-.. #[Puneeth: file-system is too technical.]
-
-{{{ switch to next slide, a sine wave}}}
-
-Start your IPython interpreter with the command ::
-
- ipython -pylab
-
-As you know, it will start your IPython interpreter with the required
-python modules for plotting and saving your plots.
-
-{{{ Open ipython }}}
-
-Now let us plot something, let us plot a sine wave from minus 3 pi to
-3 pi. Let us start by calculating the required points for the plot. It
-can be done using linspace as, ::
-
- x = linspace(-3*pi,3*pi,100)
-
-We have stored required points in x. Now let us plot the points using
-the statement ::
-
- plot(x,sin(x))
-
-{{{ Keep the plot open }}}
-
-Done! we have made a very basic sine plot, now let us see how to save
-the plot for future use so that you can embed the plot in your
-reports.
-
-.. #[Puneeth: All this is known stuff. You don't have to elaborate so
-.. much on it. Just say, let us plot sin function from -3 pi to 3
-.. pi. Show the commands, and be done with it. ]
-
-{{{ switch to next slide, savefig() }}}
-
-{{{ Switch the focus to IPython interpreter window }}}
-
-For saving the plot, we will use ``savefig()`` function, and it has to be
-done with the plot window open. The statement is, ::
-
- savefig('/home/fossee/sine.png')
-
-Notice that ``savefig`` function takes one argument which is the
-filename. The last 3 characters after the ``.`` in the filename is the
-extension or type of the file which determines the format in which you
-want to save.
-
-.. #[Puneeth: removed mention of string]
-
-.. #[[Anoop: I think this treatment is better :) ]]
-
-{{{ Highlight the /home/fossee part using mouse movements }}}
-
-Also, note that we gave the full path or the absolute path to which we
-want to save the file.
-
-{{{ Highlight the .png part using mouse movements }}}
-
-Here I have used an extension ``.png`` which means I want to save the
-image as a PNG file.
-
-Now let us locate ``sine.png`` file saved. We saved the file to
-``/home/fossee`` so let us navigate to ``/home/fossee`` using the
-file browser.
-
-{{{ Open the browser, navigate to /home/fossee and highlight the file
-sine.png }}}
-
-Yes, the file ``sine.png`` is here and let us check it.
-
-{{{ Open the file sine.png and show it for two-three seconds and then
-close it and return to IPython interpreter, make sure the plot window
-is still open, also don't close the file browser window }}}
-
-{{{ switch to next slide, More on savefig() }}}
-
-So in-order to save a plot, we use ``savefig`` function. ``savefig``
-can save the plot in many formats, such as pdf - portable document
-format, ps - post script, eps - encapsulated post script, svg -
-scalable vector graphics, png - portable network graphics which
-support transparency etc.
-
-.. #[[slide must give the extensions for the files - Anoop]]
-
-{{{ switch to next slide, exercise 1 }}}
-
-Let us now try to save the plot in eps format. ``eps`` stands for
-encapsulated post script, and it can be embedded in your latex
-documents. Pause here and try to figure it out yourself.
-
-{{{ Switch focus to the already open plot window }}}
-
-We still have the sine plot with us, and now let us save the plot as
-``sine.eps``.
-
-{{{ switch to next slide, solution 1 }}}
-
-{{{ Switch focus to IPython interpreter }}}
-
-Now, We will save the plot using the function ``savefig`` ::
-
- savefig('/home/fossee/sine.eps')
-
-{{{ Switch focus to file browser window }}}
-
-Now let us go to ``/home/fossee`` and see the new file created.
-
-{{{ Highlight the file sine.eps with a single mouse click for 2
-seconds and then double click and open the file }}}
-
-Yes! the new file ``sine.eps`` is here.
-
-{{{ switch to next slide, exercise 2 }}}
-
-Now you may try saving the same in pdf, ps, svg formats.
-
-{{{ Switch to summary slide }}}
-
-This brings us to the end of this tutorial, in this tutorial we
-learned to save plots using the function ``savefig()``. Saving the
-plots in different formats and locating the files in the file system.
-
-{{{ switch to Thank you slide }}}
-
-Thank you!