Difference between revisions of "LaTeX/C3/Feedback-diagram-with-Maths/English-timed"
From Script | Spoken-Tutorial
Sandhya.np14 (Talk | contribs) |
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| − | |You can use WHATEVER editor that you are comfortable with | + | |You can use WHATEVER editor that you are comfortable with. |
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|05:22 | |05:22 | ||
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|06:15 | |06:15 | ||
| − | |I want '''empty''' '''pagestyle''' as I do not want the page number. | + | |I want '''"empty"''' '''pagestyle''' as I do not want the page number. |
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|06:20 | |06:20 | ||
| − | |Finally, I want to include the file "maths.pdf_t" | + | |Finally, I want to include the file "maths.pdf_t". |
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|06: 27 | |06: 27 | ||
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|07:30 | |07:30 | ||
| − | |Let us save and export. It is already in the required language. Export. | + | |Let us '''save''' and '''export'''. It is already in the required language. '''Export'''. |
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|07:38 | |07:38 | ||
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|07:44 | |07:44 | ||
| − | |Let us click the pdf browser that has the file | + | |Let us click the 'pdf' browser that has the file. |
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|07: 49 | |07: 49 | ||
| − | |Now you see the mathematical expression inside the box, the way we want | + | |Now you see the mathematical expression inside the box, the way we want. |
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|07:56 | |07:56 | ||
| − | |Let us now see what happens if we do not choose the special flag. | + | |Let us now see what happens if we do not choose the '''special''' flag. |
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|08:01 | |08:01 | ||
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|08:04 | |08:04 | ||
| − | |Let me edit the text, change the “Special Flag” to | + | |Let me edit the text, change the “Special Flag” to “Normal”. Done. |
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|08:25 | |08:25 | ||
| − | |File | + | |'''File > Save'''. Let me '''export'''. |
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|08:37 | |08:37 | ||
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|08:41 | |08:41 | ||
| − | |The formula is no longer in the form we want | + | |The formula is no longer in the form we want. |
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|08:46 | |08:46 | ||
| − | |Let us change the | + | |Let us change the “Special Flag” back to “Special”. |
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|09:03 | |09:03 | ||
| − | |Save, | + | |'''Save, Export'''. |
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|09:12 | |09:12 | ||
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|09:18 | |09:18 | ||
| − | |Let us now improve the appearance of this formula | + | |Let us now improve the appearance of this formula. |
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|09:22 | |09:22 | ||
| − | |In this case, the use of dfrac will make the fraction look better. | + | |In this case, the use of 'dfrac' will make the fraction look better. |
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|09:28 | |09:28 | ||
| − | |In view of this, let us change frac to dfrac. | + | |In view of this, let us change 'frac' to 'dfrac'. |
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|09:38 | |09:38 | ||
| − | |Let me click here. Keep the mouse inside the box. | + | |Let me click here. Keep the '''mouse''' inside the box. |
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|09:43 | |09:43 | ||
| − | |Put d here. Done. Save, | + | |Put 'd' here. Done. '''Save, Export'''. |
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|09:52 | |09:52 | ||
| − | |Let us compile once again using “pdflatex” | + | |Let us compile once again using “pdflatex”. |
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|10:03 | |10:03 | ||
| − | |We get the error message “Undefined control sequence” \dfrac | + | |We get the error message “Undefined control sequence” "\dfrac". |
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|10:11 | |10:11 | ||
| − | |LaTeX complains because the command \dfrac is defined in the package “Amsmath” but we have not included it. | + | |LaTeX complains because the command '''\dfrac''' is defined in the package “Amsmath” but we have not included it. |
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|10:21 | |10:21 | ||
| − | |We need to include it in the file maths-bp.tex. | + | |We need to include it in the file "maths-bp.tex". |
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|10:27 | |10:27 | ||
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|10:35 | |10:35 | ||
| − | |Enter “\usepackage{amsmath}” | + | |Enter “\usepackage{amsmath}”. |
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|10:41 | |10:41 | ||
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|10:49 | |10:49 | ||
| − | |Let me now recompile. Now it compiles.Let us click this. | + | |Let me now recompile. Now it compiles. Let us click this. |
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|10:59 | |10:59 | ||
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|11:03 | |11:03 | ||
| − | |We have now achieved our objective of learning how to embed mathematical expressions in Xfig | + | |We have now achieved our objective of learning how to embed mathematical expressions in Xfig. |
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|11:11 | |11:11 | ||
Revision as of 17:21, 11 December 2015
| Time | Narration |
| 00:00 | Welcome to the spoken tutorial on embedding mathematics in Xfig. |
| 00:05 | In this tutorial, I shall explain how to create this figure. |
| 00:11 | Observe the mathematical expression in the second block. |
| 00:16 | You can embed any mathematical expression after learning this tutorial. |
| 00:23 | We shall create the figure in the previous slide, starting from this figure, which was created in the spoken tutorial on “Feedback Diagrams through Xfig”. |
| 00:36 | You should learn this tutorial before starting the current one. |
| 00:42 | Let me now explain, what all you need to learn the material taught in this course. |
| 00:48 | I am using Xfig Version 3.2, patch level 5. |
| 00:52 | You also need LaTeX and a familiarity with it. |
| 00:56 | You also need image cropping software. |
| 01:01 | pdfcrop works on Linux and Mac OS X. We will cover it in this tutorial. |
| 01:09 | Briss is said to work on Windows also, but not covered in this tutorial. |
| 01:15 | Let us go to Xfig. |
| 01:19 | Let us choose File, then Open. |
| 01:26 | If we scroll through the list, we will see the file “feedback.fig”, created in the spoken tutorial on “Feedback Diagrams through Xfig”. Let us click it. |
| 01:42 | We will see the figure inside this box. |
| 01:45 | Let us open it. |
| 01:53 | Let us bring it inside. |
| 02:01 | Let us also zoom it. |
| 02:05 | Using the Save as option on “File”, we will save this figure as maths. |
| 02:20 | Let us save it. |
| 02:24 | We now have the file "maths.fig". |
| 02:27 | Let us select “Edit” and click the text “Plant”. |
| 02:34 | Let me take the mouse here. Let me delete this and enter
$G(z) = \frac z{z-1}$ |
| 02:50 | Make sure that the mouse stays within the box while typing. |
| 02:56 | The default value for “Flag” is “Normal” - change it to “Special”. |
| 03:01 | Click “Done”. |
| 03:07 | As the text is long, it overlaps with other entries. |
| 03:12 | Let us move the text outside the box and work with it. |
| 03:23 | Let me click here. |
| 03:26 | Let me choose Grid mode. |
| 03:31 | Once we are satisfied with any changes that we may want here, we can put it back inside the box. |
| 03:39 | Let us save the file. |
| 03:44 | Let us export using combined 'pdf' and 'Latex' files. |
| 03:51 | File > Export > Combined pdf/LaTeX. Let us Export. |
| 04:03 | There is an error message I get. But let us not worry about this. |
| 04:11 | Let me go to the terminal. |
| 04:13 | Let me type “ls -lrt” |
| 04:21 | We get a list of files, with the last one being the most recent. |
| 04:26 | The last two files are "maths.pdf_t" and "maths.pdf". |
| 04:33 | Let us give the command “open maths.pdf”. |
| 04:42 | Let us bring it inside. |
| 04:45 | We can see the block diagram without the mathematical expression. |
| 04:50 | Let me close this. |
| 04:52 | Let us see "maths.pdf_t" in emacs editor that I have already opened. |
| 05:01 | It is here. Let me open it. |
| 05:14 | Please note that you do NOT have to use emacs. |
| 05:17 | You can use WHATEVER editor that you are comfortable with. |
| 05:22 | You can see that the “picture” environment is used. |
| 05:26 | It also makes use of “includegraphics” and “color” packages – we need to tell LaTeX to take care of this requirement. |
| 05:41 | Let me now open the file "maths-bp.tex", I have already created for this tutorial. |
| 05:59 | I have used article class. |
| 06:02 | I have used color and graphicx packages as these are used in the file 'pdf_t', the one we saw earlier. |
| 06:15 | I want "empty" pagestyle as I do not want the page number. |
| 06:20 | Finally, I want to include the file "maths.pdf_t". |
| 06: 27 | Let us invoke the command “pdflatex maths-bp” in the terminal. |
| 06:42 | We get the message that the "maths-bp.pdf" is created. |
| 06:48 | Let us open it with the command “open maths-bp.pdf”. |
| 06:58 | We have the file we want. Let me zoom it. |
| 07:07 | Now that we know that the mathematical expression is working, let us move the text inside the block. |
| 07:30 | Let us save and export. It is already in the required language. Export. |
| 07:38 | Let us dismiss this warning. |
| 07:41 | Let me compile it again. |
| 07:44 | Let us click the 'pdf' browser that has the file. |
| 07: 49 | Now you see the mathematical expression inside the box, the way we want. |
| 07:56 | Let us now see what happens if we do not choose the special flag. |
| 08:01 | Let me come here. |
| 08:04 | Let me edit the text, change the “Special Flag” to “Normal”. Done. |
| 08:25 | File > Save. Let me export. |
| 08:37 | Let me compile. Let me come here. |
| 08:41 | The formula is no longer in the form we want. |
| 08:46 | Let us change the “Special Flag” back to “Special”. |
| 09:03 | Save, Export. |
| 09:12 | Recompile. See that the file is in the form we want. |
| 09:18 | Let us now improve the appearance of this formula. |
| 09:22 | In this case, the use of 'dfrac' will make the fraction look better. |
| 09:28 | In view of this, let us change 'frac' to 'dfrac'. |
| 09:38 | Let me click here. Keep the mouse inside the box. |
| 09:43 | Put 'd' here. Done. Save, Export. |
| 09:52 | Let us compile once again using “pdflatex”. |
| 10:03 | We get the error message “Undefined control sequence” "\dfrac". |
| 10:11 | LaTeX complains because the command \dfrac is defined in the package “Amsmath” but we have not included it. |
| 10:21 | We need to include it in the file "maths-bp.tex". |
| 10:27 | Let us do it. Let us go to emacs. |
| 10:35 | Enter “\usepackage{amsmath}”. |
| 10:41 | Let us save the file. Let us compile once again. Let me first exit. |
| 10:49 | Let me now recompile. Now it compiles. Let us click this. |
| 10:59 | We see that the fraction has now come out nicely. |
| 11:03 | We have now achieved our objective of learning how to embed mathematical expressions in Xfig. |
| 11:11 | It is important to note that Xfig does not interpret the LaTeX commands at all. |
| 11:16 | The interpretation is done by the “pdflatex” command |
| 11:20 | The LaTeX commands have to be correct and consistent at the time of compilation. |
| 11:25 | We will now explain how to remove the white space around the figure. |
| 11:31 | Let me go to the terminal. |
| 11:33 | Let me type the command “pdfcrop maths-bp.pdf” - this is the file we created, into “maths-out.pdf”. |
| 11:53 | Pdfcrop says one page written on this file. |
| 11:57 | “pdfcrop” takes an input file, trims the space around the figure and writes out the cropped file in the output file. |
| 12:09 | “pdfcrop” is already installed in my system. |
| 12:12 | If you do not have it, you need to install it first. |
| 12:15 | Let us view this output file by the command, “open maths-out.pdf”. |
| 12:29 | Let me bring it inside. |
| 12:31 | The figure has now become extremely compact. |
| 12:34 | The white space that was here has been completely removed. |
| 12:38 | We can now insert this into documents. |
| 12:42 | Let me close this. Let me close this also. Let me close this also. |
| 12:52 | Let me come back to the slides. |
| 12:57 | The software “briss” can also be used to crop the white space. |
| 13:01 | It is supposed to work on Linux, Mac OS X and also on Windows. |
| 13:08 | I have checked its working on Mac OS X. But we will not demonstrate it here. |
| 13:17 | We have now come to the end of this tutorial |
| 13:20 | We have an assignment for you .Make the diagram created in this tutorial more symmetric and beautiful |
| 13:27 | Try out different mathematical expressions |
| 13:30 | Try out other options, such as flip and rotate, not covered in the spoken tutorial |
| 13:36 | Try to build different diagrams .Explore the library |
| 13:41 | Do an internet search and locate information relevant to Xfig |
| 13:47 | Useful learning material is available at spoken-tutorial.org. It is here. |
| 14:02 | The concept of spoken tutorials is explained in "What is a Spoken Tutorial" |
| 14:09 | You may learn LaTeX using the spoken tutorials available here, which I have downloaded in this tab. |
| 14:19 | The tutorial on Mathematical Typesetting explains how to create maths in LaTeX |
| 14:29 | The tutorial on Tables and Figures explains how to place figures, of the type created in this tutorial, into documents |
| 14:38 | This website has a lot of useful information, including, Xfig tutorials. Come back to the slides. |
| 14:53 | Spoken Tutorial is a part of the Talk to a Teacher project, supported by the National Mission on Education through ICT (NMEICT), MHRD, Government of India. |
| 15:03 | More information on this mission is available at spoken-tutorial.org/NMEICT-Intro |
| 15:12 | We welcome your participation and also feedback. |
| 15:16 | This is Kannan Moudgalya signing off. Thanks for joining. Goodbye |
