View source for Scilab/C2/Introduction-to-Scilab-and-its-benefits/English

{|border=1
|-
|00:04
| Hello Everyone, Welcome to this exciting world of Open Source Software. My name is Kannan Moudgalya. I am from IIT Bombay.

|-
|00:17
| I am  going to give a talk on Scilab. I hope that at the end of this talk you will all migrate to using Scilab.

|-
|00:29
|So lets get started.

|-
| 00:33
| Here is the outline of my talk. I will not go through this right now.

|-
|00:41
| Lets get on with Introduction.

|-
|00:46
|Lets start with Foss which denotes Free and Open Source Software.

|-
|00:54
| The Commercial software can be very expensive and Heavy penalties if unauthorised software is used by industry.

|-
|01:03
| Our small and medium scale enterprises dont use ANY software, the reason is that  commercial software is expensive and they are not aware of open source software

|-
|01:15
|So, it is our obligation in academia to expose our students to use Free and Open Source Software or FOSS.

|-
|01:27
| If you don't do this our small companies will not be competitive. 

|-
|01:34
| I conclude this slide by saying there is no alternative to FOSS.

|-
|01:41
| Some more reasons, Why we should use FOSS ?
|-
|01:44
| It is free of cost. It is affordable to industry.

|-
|01:50
| It allows learners to become better programmers. 

|-
|01:54
|Imagine giving a car to somebody - a car mechanic and telling him, not to open the hood.

|-
|02:02
| Open Source Software makes available the code, students can open them, see what is inside and so on - modify them, improve them and things like that.

|-
|02:15
| Open Source Software can also grow through collaborative contribution. We will explain this in this talk.

|-
|02:25
| So, should not use proprietary software at all, I am not saying it. Use it when it is absolutely required but wherever possible use Open Source Software or FOSS.

|-
|02:40
| Problems with open source software are- Good documents are missing

|-
|02:45
| Lack of support and Wrong impression about the quality.

|-
|02:51
| So, we are going to address all of these in particular -

The first one documents : We are going to address them through Spoken Tutorial and Textbook Companion.

|-
|03:07
| We will begin with Scilab, which is the FOSS alternative to the popular software Matlab.

|-
|03:14
| Scilab is an excellent open source software.

|-
| 03:20
| It is a good substitute for Matlab. About 95% compatible with Matlab and Xcos which also comes free of cost with Scilab is a good alternative to Simulink.

|-
|03:35
| Scilab has excellent computational environment. It is LINPACK, EISPACK, LAPACK. It also has DASSL, ODEPACK, etc.

|-
|03:45
| These are all amazing computational environment which are also use in Matlab.

|-
|03:52
| Because these are outstanding numerical computational engines, Scilab also is absolutely reliable.

|-
|04:03
| So, How reliable is Scilab ?

|-
|04:07
| I will explain this with an example. 

|-
|04:11
| CNES is a French aerospace cooperation. It has help, launch many of our satellites.

It launches Arianne rockets

|-
|04:26
| There was GSAT-16 launch by Ariane. Let me click this.

|-
|04:34
| It takes it to this article – BusinessLine article which says that India's communication satellite GSAT-16 was launched successfully.

|-
|04:46
| So we can see here GSAT-16 on board Arianespace rocket from the space port of French Guiana.

|-
|05:04
|Alright, so what about it?  How it is connected with Scilab ?

|-
|05:10
|So, lets come here. 


|-
|05:14
|CNES relies on Scilab for many critical calculations: trajectory, flight dynamics, orbit, etc.

|-
|05:24
| Here is a talk by Martin of CNES on Scilab.

|-
|05:29
| So let me click this.

|-
|05:36
|Let me zoom it little bit. 

|-
|05:40
|So here is the first Scilab user conference that was held in 2009 and in that conference I talked about the  National Mission on Education through ICT, I was the keynote speaker and lo and behold I talked about Open Source Software. 

|-
|06:02
| The talk is available here incase you want to go through it. But here we are interested in the talk by Martin. 

|-
|06:09
| So lets click this. It gives the summary of this. You can read this. 

|-
|06:18
| Let me zoom it a little bit.

|-
|06:21
|Now, if I click this I will get the PDF file. 

|-
| 06:27
| It has come here. You open that, So I can see that Martik talks about Use of Scilab for space mission analysis and flight dynamics activities. 

|-
|06:43
| And you can see that Scilab is now widely used in CNES, in various engineering fields, such as Telecommunications, RF analysis, Navigation, Attitude Control System analysis and dot dot dot

|-
|06:58
|Ok and he goes on talking about how Scilab is used in CNES and we go to the end of the slide.
|-
|07:13
|Scilab is widely used within the CNES flight dynamics department and so on.

|-
|07:19
|So lets come back here. So I always ask this question, If CNES can use Scilab for launching Ariane  rockets, One of which launch our GSAT-16 communication satellite

|-
|07:41
| Using which possibly I am communicating, I am connecting with Internet. If Scilab is good enough for that purpose, it is not good enough for your Optimization problem ? For plotting the 3D graph or to solve FFT or to solve a Control problem

|-
|08:03
|Ofcourse, It is good enough. Scilab is a great software and it is free and you will see many more nice things about it, So don't leave any time until the end of this talk.

|-
|08:17
|So lets go to the next slide.

|-
|08:19
| There are few more examples of Scilab use as given by the Scilab website, we click this.

|-
|08:33
|So they have given lots of Case studies, Model reductions, Flight dynamics.

|-
|08:43
| This is a Diesel engine. Let me just click this. Lets see what happens.

|-
|08:52
| You can study more about it if you are interested. 

|-
|08:57
| You can see many more examples here.

|-
|09:01
|So if somebody says that if you learn only Scilab you wont get a job, don't believe them. They have wasted interest that's why they are telling that.

|-
|09:13
|So lets come back here. 
|-
|09:16
|So I will give a brief demo of Scilab.  For this purpose I have opened Scilab already

|-
|09:25
|Its very easy to plot Scilab. So let me plot a 3D graph.

|-
|09:35
| It produces amazing quality plots.

|-
|09:40
| You can create matrices easily. So let me create a matrix: A = [ 1 2 3; 4 5 6; 7 8 0]

|-
|09:59
| So I got this matrix. So I want to calculate suppose determinant of A

|-
|10:08
|Let me calculate this if I want to calculate the Eigen value of the matrix using the command spec which stands for spectrum. I can calculate the Eigen value. 

|-
|10:24
| You can do lots of nice things. Let me give a brief demo of some of the nice things available that come with Scilab. Let me click this here.

|-
|10:36
| That gives you lot of demonstration. Now lets go to graphics.

|-
|10:43
| Lets go to 2D and 3D plots. So here are some examples of 2D plots, some other plots.

|-
|11:01
| Let me do it again

|-
|11:07
| Plot this

|-
|11:11
| We close this.

|-
|11:21
| So lets plot the 3D plot.

|-
|11:25
| Here it is.

|-
|11:27
| There are lots of nice features I would want you to explore it whenever you have an opportunity.

|-
|11:34
| It is very easy because you can download Scilab directly from the website scilab.org

|-
|11:40
| Install it, Use it and enjoy.

|-
|11:46
| So I calculated the determinant and eigen value. I showed some plots. I showed some demos.
}