Difference between revisions of "Python/C2/Saving-plots/English-timed"
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| − | + | |'''Time''' | |
| − | + | |'''Narration''' | |
| + | |||
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| − | | | + | | 00:00 |
| Hello and welcome to the tutorial on "Saving plots". | | Hello and welcome to the tutorial on "Saving plots". | ||
|- | |- | ||
| − | | | + | | 00:04 |
| At the end of this tutorial, you will be able to, | | At the end of this tutorial, you will be able to, | ||
| Line 14: | Line 15: | ||
|- | |- | ||
| − | | | + | | 00:13 |
| Before beginning this tutorial,we would suggest you to complete the tutorial on "Using plot interactively". | | Before beginning this tutorial,we would suggest you to complete the tutorial on "Using plot interactively". | ||
|- | |- | ||
| − | | | + | |00:19 |
|Now, Start your IPython interpreter with the command ipython hyphen pylab | |Now, Start your IPython interpreter with the command ipython hyphen pylab | ||
|- | |- | ||
| − | | | + | |00:30 |
|As you know, it will start your IPython interpreter with the required python modules for plotting and saving your plots. | |As you know, it will start your IPython interpreter with the required python modules for plotting and saving your plots. | ||
|- | |- | ||
| − | | | + | | 00:36 |
| To start with, let us plot a sine wave from minus 3 pi to 3 pi. | | To start with, let us plot a sine wave from minus 3 pi to 3 pi. | ||
|- | |- | ||
| − | | | + | | 00:43 |
| Let us start by calculating the required points for the plot. | | Let us start by calculating the required points for the plot. | ||
|- | |- | ||
| − | | | + | | 00:45 |
| It can be done using linspace as, | | It can be done using linspace as, | ||
|- | |- | ||
| − | | | + | |00:51 |
|You can Type x = linspace within brackets minus 3 into pi comma 3 into pi comma 100 | |You can Type x = linspace within brackets minus 3 into pi comma 3 into pi comma 100 | ||
|- | |- | ||
| − | | | + | | 00:59 |
| We have stored the required points in x. | | We have stored the required points in x. | ||
|- | |- | ||
| − | | | + | |01:03 |
|Now let us plot the points using the plot statement.So type plot (x,sinx) | |Now let us plot the points using the plot statement.So type plot (x,sinx) | ||
|- | |- | ||
| − | | | + | | 01:18 |
| Done! | | Done! | ||
|- | |- | ||
| − | | | + | | 01:19 |
| 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. | | 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. | ||
|- | |- | ||
| − | | | + | | 01:32 |
| So saving the plot, we will use savefig() function. | | So saving the plot, we will use savefig() function. | ||
|- | |- | ||
| − | | | + | |01:36 |
|For this we shall keep the plot window open alongside the terminal. | |For this we shall keep the plot window open alongside the terminal. | ||
|- | |- | ||
| − | | | + | |01:40 |
| The statement is savefig within brackets in single quotes slash home slash fossee slash sine dot png | | The statement is savefig within brackets in single quotes slash home slash fossee slash sine dot png | ||
|- | |- | ||
| − | | | + | | 01:52 |
| Notice that savefig function takes one argument which is the filename, the last 3 characters after the. in the filename is the extension and type of the file which determines the format in which you want to save. | | Notice that savefig function takes one argument which is the filename, the last 3 characters after the. in the filename is the extension and type of the file which determines the format in which you want to save. | ||
|- | |- | ||
| − | | | + | | 02:10 |
| Also, note that we gave the full path or the absolute path to which we want to save the file. | | Also, note that we gave the full path or the absolute path to which we want to save the file. | ||
|- | |- | ||
| − | | | + | | 02:18 |
| Here we have used an extension dot png which means we want to save the image as a PNG file. | | Here we have used an extension dot png which means we want to save the image as a PNG file. | ||
|- | |- | ||
| − | | | + | |02:25 |
|Now let us locate the file sine dot png which we had saved a while ago. | |Now let us locate the file sine dot png which we had saved a while ago. | ||
|- | |- | ||
| − | | | + | | 02:32 |
| We have saved the file to slash home slash fossee so let us navigate to slash home slash fossee using thefile browser. | | We have saved the file to slash home slash fossee so let us navigate to slash home slash fossee using thefile browser. | ||
|- | |- | ||
| − | | | + | | 02:49 |
| Yes, the file sine dot png is here. | | Yes, the file sine dot png is here. | ||
|- | |- | ||
| − | | | + | | 02:52 |
| Let us open it and check | | Let us open it and check | ||
|- | |- | ||
| − | | | + | | 02:57 |
| So in-order to save a plot , we use savefig function. | | So in-order to save a plot , we use savefig function. | ||
|- | |- | ||
| − | | | + | | 03:05 |
| dot 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. | | dot 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. | ||
|- | |- | ||
| − | | | + | | 03:24 |
| Pause the video here, try out the following exercise and resume the video. | | Pause the video here, try out the following exercise and resume the video. | ||
|- | |- | ||
| − | | | + | |03:29 |
|Save the sine plot in the EPS format which can be embedded in LaTeX documents. | |Save the sine plot in the EPS format which can be embedded in LaTeX documents. | ||
|- | |- | ||
| − | | | + | | 03:37 |
| We still have the sine plot with us,let us now save the plot as sine dot eps. | | We still have the sine plot with us,let us now save the plot as sine dot eps. | ||
|- | |- | ||
| − | | | + | | 03:49 |
| Now, We will save the plot using the function savefig, so you can type savefig within brackets in single quotes slash home slash fossee slash sine dot eps and hit enter | | Now, We will save the plot using the function savefig, so you can type savefig within brackets in single quotes slash home slash fossee slash sine dot eps and hit enter | ||
|- | |- | ||
| − | | | + | | 04:04 |
| Now let us go to slash home slash fossee and see the new file created. | | Now let us go to slash home slash fossee and see the new file created. | ||
|- | |- | ||
| − | | | + | | 04:13 |
| Yes! the new file sine dot epsis here. | | Yes! the new file sine dot epsis here. | ||
|- | |- | ||
| − | | | + | | 04:18 |
| Pause the video here, try out the following exercise and resume the video. | | Pause the video here, try out the following exercise and resume the video. | ||
|- | |- | ||
| − | | | + | |04:23 |
|Save the sine plot in PDF, PS and SVG formats. | |Save the sine plot in PDF, PS and SVG formats. | ||
|- | |- | ||
| − | | | + | | 04:31 |
| This brings us to the end of this tutorial. | | This brings us to the end of this tutorial. | ||
|- | |- | ||
| − | | | + | |04:34 |
|In this tutorial,we have learnt to, Save plots using the savefig() function. | |In this tutorial,we have learnt to, Save plots using the savefig() function. | ||
|- | |- | ||
| − | | | + | | 04:38 |
| then Save the plots in different formats like - pdf - ps - png - svg - eps | | then Save the plots in different formats like - pdf - ps - png - svg - eps | ||
|- | |- | ||
| − | | | + | | 04:45 |
| Here are some self assessment questions for you to solve | | Here are some self assessment questions for you to solve | ||
|- | |- | ||
| − | | | + | |04:48 |
|1. Which command is used to save a plot. saveplot() savefig() savefigure() saveplt() | |1. Which command is used to save a plot. saveplot() savefig() savefigure() saveplt() | ||
|- | |- | ||
| − | | | + | |04:59 |
| 2. savefig('sine.png') saves the plot in, | | 2. savefig('sine.png') saves the plot in, | ||
|- | |- | ||
| − | | | + | | 05:04 |
| The root directory (on GNU/Linux, Unix based systems), c colon slash (on windows). | | The root directory (on GNU/Linux, Unix based systems), c colon slash (on windows). | ||
|- | |- | ||
| − | | | + | | 05:14 |
| The second option. Will result in an error as full path is not supplied. | | The second option. Will result in an error as full path is not supplied. | ||
|- | |- | ||
| − | | | + | | 05:18 |
| The third one.The current working directory. | | The third one.The current working directory. | ||
|- | |- | ||
| − | | | + | | 05:21 |
| and final option is Predefined directory like /documents. | | and final option is Predefined directory like /documents. | ||
|- | |- | ||
| − | | | + | |05:26 |
| And now, the answers, | | And now, the answers, | ||
|- | |- | ||
| − | | | + | | 05:28 |
|1.To save a plot,we use the savefig() function. | |1.To save a plot,we use the savefig() function. | ||
|- | |- | ||
| − | | | + | |05:33 |
|2. Whenever we save a file,it gets saved in the current working directory. | |2. Whenever we save a file,it gets saved in the current working directory. | ||
|- | |- | ||
| − | | | + | | 05:38 |
| Hope you have enjoyed and found it useful.THanks | | Hope you have enjoyed and found it useful.THanks | ||
Revision as of 12:22, 10 July 2014
| Time | Narration |
| 00:00 | Hello and welcome to the tutorial on "Saving plots". |
| 00:04 | At the end of this tutorial, you will be able to,
|
| 00:13 | Before beginning this tutorial,we would suggest you to complete the tutorial on "Using plot interactively". |
| 00:19 | Now, Start your IPython interpreter with the command ipython hyphen pylab |
| 00:30 | As you know, it will start your IPython interpreter with the required python modules for plotting and saving your plots. |
| 00:36 | To start with, let us plot a sine wave from minus 3 pi to 3 pi. |
| 00:43 | Let us start by calculating the required points for the plot. |
| 00:45 | It can be done using linspace as, |
| 00:51 | You can Type x = linspace within brackets minus 3 into pi comma 3 into pi comma 100 |
| 00:59 | We have stored the required points in x. |
| 01:03 | Now let us plot the points using the plot statement.So type plot (x,sinx) |
| 01:18 | Done! |
| 01:19 | 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. |
| 01:32 | So saving the plot, we will use savefig() function. |
| 01:36 | For this we shall keep the plot window open alongside the terminal. |
| 01:40 | The statement is savefig within brackets in single quotes slash home slash fossee slash sine dot png |
| 01:52 | Notice that savefig function takes one argument which is the filename, the last 3 characters after the. in the filename is the extension and type of the file which determines the format in which you want to save. |
| 02:10 | Also, note that we gave the full path or the absolute path to which we want to save the file. |
| 02:18 | Here we have used an extension dot png which means we want to save the image as a PNG file. |
| 02:25 | Now let us locate the file sine dot png which we had saved a while ago. |
| 02:32 | We have saved the file to slash home slash fossee so let us navigate to slash home slash fossee using thefile browser. |
| 02:49 | Yes, the file sine dot png is here. |
| 02:52 | Let us open it and check |
| 02:57 | So in-order to save a plot , we use savefig function. |
| 03:05 | dot 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. |
| 03:24 | Pause the video here, try out the following exercise and resume the video. |
| 03:29 | Save the sine plot in the EPS format which can be embedded in LaTeX documents. |
| 03:37 | We still have the sine plot with us,let us now save the plot as sine dot eps. |
| 03:49 | Now, We will save the plot using the function savefig, so you can type savefig within brackets in single quotes slash home slash fossee slash sine dot eps and hit enter |
| 04:04 | Now let us go to slash home slash fossee and see the new file created. |
| 04:13 | Yes! the new file sine dot epsis here. |
| 04:18 | Pause the video here, try out the following exercise and resume the video. |
| 04:23 | Save the sine plot in PDF, PS and SVG formats. |
| 04:31 | This brings us to the end of this tutorial. |
| 04:34 | In this tutorial,we have learnt to, Save plots using the savefig() function. |
| 04:38 | then Save the plots in different formats like - pdf - ps - png - svg - eps |
| 04:45 | Here are some self assessment questions for you to solve |
| 04:48 | 1. Which command is used to save a plot. saveplot() savefig() savefigure() saveplt() |
| 04:59 | 2. savefig('sine.png') saves the plot in, |
| 05:04 | The root directory (on GNU/Linux, Unix based systems), c colon slash (on windows). |
| 05:14 | The second option. Will result in an error as full path is not supplied. |
| 05:18 | The third one.The current working directory. |
| 05:21 | and final option is Predefined directory like /documents. |
| 05:26 | And now, the answers, |
| 05:28 | 1.To save a plot,we use the savefig() function. |
| 05:33 | 2. Whenever we save a file,it gets saved in the current working directory. |
| 05:38 | Hope you have enjoyed and found it useful.THanks |
Contributors and Content Editors
Gaurav, Jyotisolanki, Minal, PoojaMoolya, Sandhya.np14, Sneha
