Grace/C2/Bar-Chart-and-Error-Bars/English-timed

Time	Narration
00:01	Welcome to the spoken tutorial on Bar Chart and Error bars.
00:07	In this tutorial, we will learn to, Draw a bar chart
00:13	Label the x-axis with string data
00:18	Edit the dataset
00:21	Add error bars in y-axis
00:25	Change the error bar size and color
00:30	Add an object and format the style and
00:36	Delete an object
00:38	To record this tutorial, I am using,
00:42	Ubuntu Linux 16.04 OS
00:48	Grace version 5.1.25
00:53	gedit text editor 3.18.3
00:59	To follow this tutorial, Learner must be familiar with the Grace interface.
01:06	For the pre-requisite tutorials, please visit this site.
01:11	The example files required for this tutorial are provided in the code files link.
01:18	Please download and extract the files to Desktop.
01:23	Go to Desktop.
01:26	Notice the text file bar.txt.
01:30	Open file bar.txt in a text editor and notice the three data columns.
01:39	The first column is the data row number.
01:43	Second column is y data.
01:47	The third column is the x data which is a string.
01:52	Close the text editor window.
01:55	I have opened the Grace program.
01:58	First, resize the graph panel to fit the field of view.
02:03	Go to Data, import, ASCII to open the Grace read sets dialog box.
02:13	Navigate to Desktop and select the bar.txt file.
02:23	For set type choose bar option from the dropdown.
02:28	Autoscale XY on read and click on Ok to load the data.
02:35	Click on Cancel to close the dialog box.
02:40	A bar chart appears along with a line plot.
02:45	Let’s format the properties of the bar chart and add the x string data to it.
02:52	Double click on the line to open Set Appearance window.
02:58	I will drag the Set Appearance window for better view.
03:03	Under the Line properties, in the Type dropdown, choose None.
03:09	Click on Apply to remove the line in the graph.
03:13	Click on Close, to close the dialog box.
03:17	Next, go to the Plot menu and select Axis properties.
03:23	In the Grace: Axes window, change the x axis limits from zero to four. Type start at 0 and at stop 4.
03:35	Under Tick properties, I will set Major spacing to one and Minor ticks to zero.
03:42	Click on Apply, to apply the changes.
03:46	In the Edit dropdown, select y axis.
03:50	I will change the y axis limits to start from zero and to stop at 5. Click on Apply.
03:59	From the tick marks tab, from the Draw on drop down, choose Normal side.
04:06	Then click Apply to apply the changes.
04:10	Let us change the same for x axis.
04:14	In the Edit dropdown, select X axis.
04:18	In the Draw on dropdown, change draw ticks to Normal side.
04:24	Again click on Apply to apply the changes to the graph.
04:29	Notice how the graph looks after each change has been applied.
04:35	Click on the Special tab on the right side.
04:39	This tab is labeled as custom ticks in Qtgrace.
04:44	In the Special ticks drop down, choose Tick marks and labels.
04:50	Let us re-open bar.txt file.
04:54	Notice that, the string S1 is associated with the first data point.
05:01	Similarly the string S2 is associated with the second data point.
05:07	And the string S3 is associated with the third data point.
05:12	Close the text editor window.
05:15	Make sure the Edit form is in x-axis.
05:20	In the tick location label form, enter data as seen.
05:26	Delete the value zero and four on the second column.
05:31	Type, S1, S2 and S3 against 1, 2 and 3 in the second column.
05:39	Click on Apply to see the changes in the graph.
05:43	Next, let’s learn to edit a dataset within the Grace program.
05:49	Click on Close to close the dialog box.
05:53	Double click on the bar in the graph to open the Set Appearance window.
06:00	Under Select set, notice G(0) (S0) [2] [3].
06:07	G denotes graph and S refers to the dataset in the graph.
06:13	Here it is graph zero and set zero.
06:18	Right-click and hold the mouse on G(0) S0 to open a context menu.
06:26	The context menu has more options in Qtgrace.
06:32	In the menu choose Edit and from the sub-menu, select In Spreadsheet option.
06:41	The dataset opens in the Spreadsheet data set editor.
06:46	In the Type drop-down change BAR to BARDY and click on Apply.
06:54	An extra column Y1 gets added to the spreadsheet.
06:59	Windows users will not see the string label column in Qtgrace.
07:06	I will enter the error values as 0.4, 0.6 and 0.3 in the Y1 column and click on Apply.
07:18	Click on Close, on the Spreadsheet editor window.
07:22	Notice the incorporated error bars on the bar chart.
07:27	Next, we will edit the size of the Error bar.
07:32	Go to the Set appearance window and choose the Error bar tab.
07:38	Change the Bar line to 50 using the scroll bar.
07:43	Click on the color drop down and select red color. Then, click on Apply.
07:51	This changes the color of the error bars to red.
07:56	Click on Close in the set appearance window.
08:00	We will now draw an arrow in the plot.
08:05	Go to Window in menu and choose Drawing Objects. The Objects panel opens.
08:13	Click on the Line button and move the cursor to the plot.
08:18	The cursor changes to plus sign.
08:22	I will left click on the desired location to start the line.
08:27	Drag the cursor to draw the line until the desired location.
08:32	Notice that a line is drawn.
08:35	Click left again to fix the end location of the line.
08:40	Click on the Edit object.
08:44	Next, Double click on the line.
08:47	The Edit Line dialog box opens.
08:51	Change Line width to 1.5 using the triangle buttons.
08:57	For the arrow styles, in the Place at drop-down, choose End.
09:03	For the arrow Type, choose Filled.
09:07	Decrease I by L form factor to 0.7 .
09:12	The Position shows Viewport coordinates. I will leave it as is.
09:19	Click on Accept to change the arrow style.
09:23	Click on Close to close the dialog box.
09:27	We can make a copy of an existing object.
09:31	To make a similar arrow as this, click on Copy object in the Objects panel.
09:39	The cursor changes to a hand sign.
09:43	Left click and hold on the arrow to see a box.
09:48	Drag the box and place the copied arrow at the desired location.
09:54	Left click to release the copied arrow in the desired location.
10:00	We can also delete the objects added to the graph.
10:04	To delete an added object, click on Delete object in the Objects panel.
10:10	Move cursor to the graph and the cursor changes to a x sign.
10:17	I will click on the newly copied arrow to delete it.
10:22	A warning popup window opens, asking the user Kill the line?
10:28	Click on Ok and notice that the object has been deleted.
10:33	Similarly, we can add text, ellipse and also format their properties.
10:40	Click on Close to close the objects panel.
10:45	Let us save the Grace project before closing it.
10:48	I will save with file as barxydy.agr on Desktop.
10:56	Choose File, Exit to exit Grace.
11:01	Now let's summarize.
11:03	In this tutorial, we, Drew a bar chart
11:08	Labeled the x-axis with string data
11:13	Edited the dataset
11:16	Added error bars in the y-axis Adjusted the error bar size
11:24	Added an object, formatted the style and deleted an object
11:30	For assignment, please do the following.
11:34	Draw a Time-activity graph for your daily activities.
11:42	For this, time your activities in a day and make a time table.
11:47	Plot a bar chart with time in hours on y-axis and activities on x-axis.
11:56	Your completed assignment may look similar to this.
12:02	This video summarizes the Spoken Tutorial Project. Please download and watch it.
12:10	The Spoken Tutorial Project team: conducts workshops and gives certificates. For more details, please write to us.
12:21	Please post your timed queries in this forum.
12:26	Spoken Tutorial Project is funded by NMEICT, MHRD, Government of India. More information on this mission is available at this link.
12:37	This tutorial is contributed by Rani from IIT, Bombay. Thank you for joining.

Contributors and Content Editors

PoojaMoolya