Jyotisolanki at 04:11, 29 March 2017

2017-03-29T04:11:17Z

Jyotisolanki at 07:15, 9 June 2014

2014-06-09T07:15:15Z

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Jyotisolanki at 07:00, 9 June 2014

2014-06-09T07:00:18Z

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Krupali at 07:18, 27 November 2013

2013-11-27T07:18:45Z

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Jyotisolanki at 11:30, 18 November 2013

2013-11-18T11:30:56Z

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Jyotisolanki: Created page with ' {| Border=1 || Time || Narration |- | 00.00 | | Welcome to the spoken tutorial on Plotting 2D graphs with scilab. |- | 00.05 | Assuming that Scilab is installed on your …'

2013-11-18T10:37:05Z

Created page with ' {| Border=1 || Time || Narration |- | 00.00 | | Welcome to the spoken tutorial on Plotting 2D graphs with scilab. |- | 00.05 | Assuming that Scilab is installed on your …'

New page

{| Border=1

|| Time

|| Narration

|-

| 00.00

| | Welcome to the spoken tutorial on Plotting 2D graphs with scilab.

|-

| 00.05

| Assuming that Scilab is installed on your computer, we will discuss plots in Scilab.

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|00.10

| | Scilab offers many ways to create and customize various types of 2D and 3D plots.

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|00.16

|| The several common charts Scilab can create are: x-y plots, contour plots, 3D plots, histograms, bar charts, etc...

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| 00.25

| | Now open your Scilab console window.

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|00.28

| | I will use Plotting.sce file to cut and paste the commands.

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|00.34

| | In order to Plot, we need a set of points. Let us create a sequence of equally spaced points.

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| 00.40

| | This can be done by the linspace command which creates a linearly equally spaced vector.

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| 00.46

| | For Example

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|00.49

| |x is a row vector with 5 points linearly equally spaced between 1 and 10

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| 00.57

| | Similarly y is a row vector with linearly equally spaced 5 points between 1 and 20

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|01.08

|| More information on linspace command can be obtained from the Help documentation.

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|01.14

| | We will now plot a graph with the arguments x and y using the Plot function.

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|0119

|| This is similar to the one used in matlab. Plot x,y

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| 01.26

| |creates a graph of x verses y as you see.

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|01.32

| | Notice that the graphics window is labeled as '0' We will open another graphic window using the ,

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| 01.39

| |xset function. I will close this cut the xset function paste in scilab hit enter.

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|01.51

| You will see a graphic window number 1. Note that two arguments are passed to this function namely the window and 1.

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|02.03

| | The next graph will be plotted on this window.

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| 02.07

|| For scilab plot 2d is the native function used to plot 2d graphs.

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| 02.14

| | plot2d command plots a graph of x verses y as you see.

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|02.27

|| Notice that there is a third argument called style.

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| 02.32

| | Style argument is optional.It is used to customize the appearance of the plot.

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|02.36

| | For positive values of style the curve is a plain with different colours like green for 3 in our case.

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|02.44

| The default value of style is 1.

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|02.46

|| Try plotting graphs for negative values and see the difference in appearance yourself.

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|02.52

| | Also we can set the start points and end points for x and y axis by passing the fourth argument.It is called rect. As you see,

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| 03.08

|| We have x axis starting from 1 to 10 and y axis from 1 to 20.

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| 03.15

| The order of argument in the rect command is xmin,ymin,xmax and ymax.

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| 03.25

|| Let us now learn about Title,Axis and Legends

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|03.28

|| To configure labels to the axis and title to the plot we can use the commands title, x label and ylabel.

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| 03.38

|| I will cut this set of commands and paste in the console. Hit enter

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| 03.45

| | You will see that the graph has been labeled x to the x axis, y to the y axis and the title of the graph is my title.

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|03.59

| | You may want to configure the title and axis of the plot in a single command instead of 3 for this purpose we use the xtitle,

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| 04.09

| |command with all the 3 arguments.

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| 04.12

| | I will cut this command paste in scilab enter.

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|04.19

| | Now you see that the x axis label is X axis , Y axis and the title is My title.

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|04.27

| | The clf() function that i am typing now will clear the graphic window as you see.

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| 04.37

| | It is useful while plotting different graph on the same graphic window.

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| 04.42

| | I will close this window.

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| 04.44

|| Sometimes we need to compare two sets of data in the same plot, that is, one set of x data and two sets of y data.

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| 04.52

| | Let us see an example for this I will scroll down

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|04.57

|| We will define the x axis points in a row vector x using the linspace command

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|05.03

|| Let us define a function

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| 05.05

| |y1 = x^2

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| 05.08

| |plot x verses y1

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|05.10

| | define another function

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|05.12

| |y2 = 2*x^2

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|05.15

| |plot x verses y2

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| 05.19

| | we will also give label and title to our graph

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|05.23

|| Notice that we have additionally passed ”o-” and ”+-” commands to the plot function, to change the appearance of the curve

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|05.33

| "| These arguments are not a part of the plot2d function.

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| 05.37

| | They can be used only with the plot function

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| 05.41

| | I will copy these set of commands and paste in the scilab console.

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| 05.49

| | You see the graph

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| 05.52

| | Wouldn't it be of great help to know which curve is associated with which function?

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| 05.57

|| This can be achieved using the legend command as you see

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| 06.09

|| "o-" curve represents function y1=x^2 function and "+-" curve represents function y2=2*x^2

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| 06.20

|| I will close this graphic window

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| 06.23

| | We will now discuss about plot2d demos and subplot function

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| 06.28

| | Scilab provides demos for all its major functions Demos of plot2d can be viewed through demonstration tab.

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|06.40

| | click on Graphics,click plot2d_3d plots and select a demo out the various demos provided. I will click on plot2d.

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| 06.54

| | You will see the demo graph

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|06.56

|| The code for this graph can also be seen by clicking on the view code button here.

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| 07.02

| | This link does not open in Mac OS but works in windows and linux

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| 07.08

| | Nevertheless in Mac the code can be viewed through the directory.

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| 07.12

| | Let us go to the terminal.

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|07.16

| | currently i am in demos directory of scilab 5.2 as shown.

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| 07.22

| | The full path to this directory is shown here.

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|07.28

|| we will type ls to see the list of demos available as you see here.

|

|-

| 07.37

| Then we will select the 2d_3d_plots directory and hit enter type ls again to see various demo code available in the sce files

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| 07.55

| | we will view the code for the demo which we have seen earlier.

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| 08.00

| | Type more plot2d.dem.sce and hit enter

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|08.12

|| Here you will see the code for the demo graph of plot2d function

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| 08.18

| | I will close the terminal I will close the demo graph and the demo window

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| 08.26

| | Similarly you can go through the other demos and explore scilab

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|08.30

| | Let us now discuss about Subplot function

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| 08.33

|| The subplot() function divides the graphics window into a matrix of sub-windows.

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| 08.38

| | To explain this function we will use demos for plotting 2D graphs in scilab.

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| 08.43

| |For example, type plot 2d in your console and see the demo plot for this function

|

|-

| 08.59

| | I will close this window.

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| 09.01

| The subplot command breaks the graphics window into a 2 by 2 matrix of sub-windows represented by the first two arguments in the subplot command.

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| 09.11

| |The third argument denotes the current window in which the plot will be plotted

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| 09.16

|| I will execute this whole set of commands by copying it to the scilab console

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|09.25

| | You can see 4 plots in a single plot window .

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| 09.29

| | The plot obtained can be saved as a image on your computer

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| 09.33

| Click on the graphic window, go to File menu select export to .

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| 09.40

| | Give a suitable title to your plot, select a destination folder to save your file select the file format in which you want your image to appear.

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| 10.59

| | I will select the JPEG format and Click Save.

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| 10.05

| Browse through the directory to open the image and verify yourself whether it has been saved or not.

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| 10.12

| | This brings us to the end of this spoken tutorial on Plotting in Scilab.

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|10.16

|| There are many other functions in Scilab which will be covered in other spoken tutorials.

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|10.20

| | Keep watching the Scilab links.

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|10.23

| Spoken Tutorials are part of the Talk to a Teacher project, supported by the National Mission on Education through ICT.

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|10.29

| | More information on the same is availableon the following link

|-

|10.33

| |Thanks for joining. Good bye

|}

@@ Line 453: / Line 453: @@
 | 07.36
 | ત્યારબાદ આપણે '''2d_3d_plots''' ડીરેક્ટરી પસંદ કરીશું અને '''enter''' દબાવીશું,
-−
 |-
 | 07.46

Scilab/C2/Plotting-2D-graphs/Gujarati - Revision history

Jyotisolanki at 04:11, 29 March 2017

Jyotisolanki at 07:15, 9 June 2014

Jyotisolanki at 07:00, 9 June 2014

Krupali at 07:18, 27 November 2013

Jyotisolanki at 11:30, 18 November 2013

Jyotisolanki: Created page with ' {| Border=1 || Time || Narration |- | 00.00 | | Welcome to the spoken tutorial on Plotting 2D graphs with scilab. |- | 00.05 | Assuming that Scilab is installed on your …'