Phaseplot - Revision history

Merfeld at 03:31, 13 October 2008

2008-10-13T03:31:28Z

← Older revision		Revision as of 03:31, 13 October 2008
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	X1Range and X2Range don't have to be the same as those that were put into the phaseplot command, but they do take the same form: [min max num].		X1Range and X2Range don't have to be the same as those that were put into the phaseplot command, but they do take the same form: [min max num].

	NOTE: If you are going to use boxgrid on this problem, you need to do a small alteration to the boxgrid.m file. Open the boxgrid.m file and delete the first element of both the sx1 and sx2 vectors defined on lines 11 and 12~~. This element should be a zero in each vector~~.		NOTE: If you are going to use boxgrid on this problem, you need to do a small alteration to the boxgrid.m file. Open the boxgrid.m file and delete the first element,which is a zero, of both the sx1 and sx2 vectors defined on lines 11 and 12.

	--[[User:Merfeld\| Max Merfeld]]		--[[User:Merfeld\| Max Merfeld]]

Merfeld at 18:27, 12 October 2008

2008-10-12T18:27:21Z

← Older revision		Revision as of 18:27, 12 October 2008
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	X1Range and X2Range don't have to be the same as those that were put into the phaseplot command, but they do take the same form: [min max num].		X1Range and X2Range don't have to be the same as those that were put into the phaseplot command, but they do take the same form: [min max num].

			NOTE: If you are going to use boxgrid on this problem, you need to do a small alteration to the boxgrid.m file. Open the boxgrid.m file and delete the first element of both the sx1 and sx2 vectors defined on lines 11 and 12. This element should be a zero in each vector.

	--[[User:Merfeld\| Max Merfeld]]		--[[User:Merfeld\| Max Merfeld]]

Merfeld at 18:18, 12 October 2008

2008-10-12T18:18:37Z

← Older revision		Revision as of 18:18, 12 October 2008
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	When calling the phaseplot command, be sure that you are correctly inputting the arguments. Below is a proper example of how to call phaseplot:		When calling the phaseplot command, be sure that you are correctly inputting the arguments. Below is a proper example of how to call phaseplot:

	phaseplot('f',X1Range,X2Range, scale)		phaseplot('f',X1Range,X2Range, scale, Xinit)

	phaseplot('oscillator', [-1 1 10], [-1 1 10], 0.1)		phaseplot('oscillator', [-1 1 10], [-1 1 10], 0.1,boxgrid([-1 1 10], [-1 1 10]))

	Note that oscillator is the function that defines the derivative (look at week two and download oscillator.m if you don't know how to define the derivative function) and it is called with apostrophes:		Note that oscillator is the function that defines the derivative (look at week two and download oscillator.m if you don't know how to define the derivative function) and it is called with apostrophes:
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	X1Range and X2Range are of the form [min, max, num]. They define the axes of the plot and num determines how many arrows will be drawn along each corresponding axis. Make sure that the axes ranges include the equilibrium points. Scale is the final argument and it scales the arrows created on the quiver plot; 0.1 seems to be a good choice, but if your arrows are to small or too big try a different scale factor.		X1Range and X2Range are of the form [min, max, num]. They define the axes of the plot and num determines how many arrows will be drawn along each corresponding axis. Make sure that the axes ranges include the equilibrium points. Scale is the final argument and it scales the arrows created on the quiver plot; 0.1 seems to be a good choice, but if your arrows are to small or too big try a different scale factor.

			Finally, Xinit determines what points to start the trajectories that get drawn on the phase diagram. For this you can either just make a list of points around the edge of the axes or you can use Professor Murray's boxgrid.m which is located on the Week 2 page of the wiki. If you choose to use boxgrid, call it as follows:

			boxgrid(X1Range, X2Range)

			X1Range and X2Range don't have to be the same as those that were put into the phaseplot command, but they do take the same form: [min max num].

	--[[User:Merfeld\| Max Merfeld]]		--[[User:Merfeld\| Max Merfeld]]

Merfeld at 02:04, 12 October 2008

2008-10-12T02:04:04Z

← Older revision		Revision as of 02:04, 12 October 2008
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	When calling the phaseplot command, ~~make~~ sure to call ~~the function in the first argument correctly~~:		When calling the phaseplot command, be sure that you are correctly inputting the arguments. Below is a proper example of how to call phaseplot:

	~~Incorrect Ways: 1.~~ phaseplot( F, .... )		phaseplot('f',X1Range,X2Range, scale)

	Correct ~~Way~~: ~~phaseplot(~~ 'F', ..... )		phaseplot('oscillator', [-1 1 10], [-1 1 10], 0.1)

			Note that oscillator is the function that defines the derivative (look at week two and download oscillator.m if you don't know how to define the derivative function) and it is called with apostrophes:

			Correct way: 'oscillator'

			Incorrect ways: oscillator or @oscillator

			X1Range and X2Range are of the form [min, max, num]. They define the axes of the plot and num determines how many arrows will be drawn along each corresponding axis. Make sure that the axes ranges include the equilibrium points. Scale is the final argument and it scales the arrows created on the quiver plot; 0.1 seems to be a good choice, but if your arrows are to small or too big try a different scale factor.

	--[[User:Merfeld\| Max Merfeld]]		--[[User:Merfeld\| Max Merfeld]]

Merfeld at 01:06, 12 October 2008

2008-10-12T01:06:30Z

← Older revision		Revision as of 01:06, 12 October 2008
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	When calling the phaseplot command, make sure to call the function in the first argument correctly:		When calling the phaseplot command, make sure to call the function in the first argument correctly:

	Incorrect Ways: phaseplot( F, .... )		Incorrect Ways: 1. phaseplot( F, .... )
	~~phasep<nowiki>Insert non-formatted text here</nowiki>lot( @F, ..... )~~

	Correct Way: phaseplot( 'F', ..... )		Correct Way: phaseplot( 'F', ..... )

Merfeld at 01:05, 12 October 2008

2008-10-12T01:05:03Z

← Older revision		Revision as of 01:05, 12 October 2008
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	Incorrect Ways: phaseplot( F, .... )		Incorrect Ways: phaseplot( F, .... )
	~~phaseplot~~( @F, ..... )		phasep<nowiki>Insert non-formatted text here</nowiki>lot( @F, ..... )

	Correct Way: phaseplot( 'F', ..... )		Correct Way: phaseplot( 'F', ..... )

Merfeld at 01:02, 12 October 2008

2008-10-12T01:02:52Z

← Older revision		Revision as of 01:02, 12 October 2008
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	When calling the phaseplot command, make sure to call the function in the first argument correctly:		When calling the phaseplot command, make sure to call the function in the first argument correctly:

	Incorrect ~~Way~~: phaseplot( F, ..... )		Incorrect Ways: phaseplot( F, .... )
			phaseplot( @F, ..... )

	Correct Way: phaseplot( 'F', ..... )		Correct Way: phaseplot( 'F', ..... )

Merfeld at 22:41, 11 October 2008

2008-10-11T22:41:31Z

← Older revision		Revision as of 22:41, 11 October 2008
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	Correct Way: phaseplot( 'F', ..... )		Correct Way: phaseplot( 'F', ..... )

	--[[~~user~~:Merfeld]]		--[[User:Merfeld\| Max Merfeld]]

	[[Category:CDS 101/110 FAQ - Homework 2]]		[[Category:CDS 101/110 FAQ - Homework 2]]
	[[Category:CDS 101/110 FAQ - Homework 2, Fall 2008]]		[[Category:CDS 101/110 FAQ - Homework 2, Fall 2008]]

Merfeld at 22:41, 11 October 2008

2008-10-11T22:41:18Z

← Older revision		Revision as of 22:41, 11 October 2008
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	--[[user:Merfeld]]		--[[user:Merfeld]]

			[[Category:CDS 101/110 FAQ - Homework 2]]
			[[Category:CDS 101/110 FAQ - Homework 2, Fall 2008]]

Merfeld: Phasplot moved to Phaseplot

2008-10-11T22:40:52Z

Phasplot moved to Phaseplot

← Older revision		Revision as of 22:40, 11 October 2008
(No difference)