List Archives >  Maple User Group List Archive >  Archive by date >  This Month By Date >  This Month By Topic

[MUG] Plot and Graphic Sizes

Search email archive for  

[MUG] Plot and Graphic Sizes
Author: Nathan Sokalski    Posted: 17/10/2000 06:02:57 GDT
>> From: "Nathan Sokalski" I have 2 questions to ask: Question #1: When plotting a list of 3D graphics using display() (from the plots package), my plot (and the axes) took up only about 1/3 of the space inside the "stretching handles" (black circles at corners and mid-sides of the rectangle surrounding the graphic) used to manually enlarge the plot. This is when scaling=unconstrained, so it is not due to one axis being bigger than another. Therefore, I am unable to stretch the graphic to make it a good viewing size. Why doesn't the plot take up the area surrounded by the "stretching handles"? Question #2: Is it possible to specify in a plot (or maybe in display() ) the area to which you want a plot stretched? I know how to do this manually using the "stretching handles", but when correcting errors in a plot it can be a pain to need to do this every time the plot is drawn. Anyone know how? Nathan Sokalski _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.

[MUG] Re: Plot and Graphic Sizes
Author: Dr Francis J Wright    Posted: 25/10/2000 13:34:27 GDT
>> From: "Dr Francis J. Wright" | >> From: "Nathan Sokalski" | | Question #1: | When plotting a list of 3D graphics using display() (from the plots | package), my plot (and the axes) took up only about 1/3 of the space inside | the "stretching handles" (black circles at corners and mid-sides of the | rectangle surrounding the graphic) used to manually enlarge the plot. This | is when scaling=unconstrained, so it is not due to one axis being bigger | than another. Therefore, I am unable to stretch the graphic to make it a | good viewing size. Why doesn't the plot take up the area surrounded by the | "stretching handles"? I think the extra space is to allow for possible rotations. | Question #2: | Is it possible to specify in a plot (or maybe in display() ) the area to | which you want a plot stretched? I know how to do this manually using the | "stretching handles", but when correcting errors in a plot it can be a pain | to need to do this every time the plot is drawn. Anyone know how? I find that if I re-execute a plot(3d) then the new plot re-uses the previous plot area. Hence, I don't need to change it every time the plot is redrawn. Francis -- Dr Francis J. Wright | mailto: School of Mathematical Sciences | tel: (020) 7882 5453 (direct) Queen Mary, University of London | fax: (020) 8981 9587 (dept.) Mile End Road, London E1 4NS, UK | http://centaur.maths.qmw.ac.uk/

[MUG] Re: Plot and Graphic Sizes
Author: Edgardo S Cheb-Terrab    Posted: 03/11/2000 00:31:42 GMT
>> From: "Edgardo S. Cheb-Terrab" >> From: "Dr Francis J. Wright" | >> From: "Nathan Sokalski" | | Question #1: | When plotting a list of 3D graphics using display() (from the plots | package), my plot (and the axes) took up only about 1/3 of the space inside | the "stretching handles" (black circles at corners and mid-sides of the | rectangle surrounding the graphic) used to manually enlarge the plot. This | is when scaling=unconstrained, so it is not due to one axis being bigger | than another. Therefore, I am unable to stretch the graphic to make it a | good viewing size. Why doesn't the plot take up the area surrounded by the | "stretching handles"? > I think the extra space is to allow for possible rotations. =================== Hi Francis, Nathan, I actually agree with Nathan here, and faced the same discomfort - I do not think this extra space is for possible rotations as you say Francis. Consider a concrete example: ee := BesselJ(2,x+I*y); P := array(1..4): P[1] := plot3d(Re(ee),x=-1..1,y=-1..1, axes=FRAMED): P[2] := plot3d(Im(ee),x=-1..1,y=-1..1, axes=FRAMED): plots[display](P); Now click (one touch with mouse) over the plot to see the rectangle enclosing the plot. Doing the above In Maple 4, I see that the actual image being plotted occupies most of the space (90% ?) of the enclosing rectangle. On the other hand, in Maple 6, at least 50% of the space inside the rectangle is empty (wasted), resulting in a too tiny plot which, to really analyze it, I need to use the mouse to enlarge the enclosing plot rectangle. I also can rotate without arriving close to the borders - the problem is not there. The problem Nathan mentioned becomes more evident when there are more than just 2 plots being displayed. Try for instance adding two more e2 := exp(x+I*y); P[3] := plot3d(Re(e2),x=-1..1,y=-1..1, axes=FRAMED): P[4] := plot3d(Im(e2),x=-1..1,y=-1..1, axes=FRAMED): plots[display](P); To Nathan's comment, I would add two more: when axes are displayed (e.g., as with the input above), in Maple 4 I see the colour of the font for the labels and numbers in the axes is black. Fine. In Maple 6 - however - these numbers appear in the same varying multi-colors used to paint the plotted surface themselves (what is the reason for that? In my opinion that just make these numbers more difficult to read). The second problem is: the numbers themselves. I see, for instance | 0. | 0.100000000 | 0.200000000 | 0.50000000 e-1 | | ( <- plotting axe) So, what is the purpose of these 9 zeros to the left when this is just a label in an axe of a displayed plot (i.e.: a "visualization" - not a "numerical computation" to proceed further). Edgardo ___________________________________________________________________________ Edgardo S. Cheb-Terrab http://lie.uwaterloo.ca/ecterrab Theoretical Physics Department UERJ,Brazil Centre for Experimental and Constructive Mathematics SFU, Canada

[MUG] Re: Plot and Graphic Sizes
Author: Theodore Kolokolnikov    Posted: 27/11/2000 15:01:35 GMT
>> From: Theodore Kolokolnikov > From: "Dr Francis J. Wright" > | >> From: "Nathan Sokalski" > | > | Question #1: > | When plotting a list of 3D graphics using display() (from the plots > | package), my plot (and the axes) took up only about 1/3 of the space inside] > | ... > > I think the extra space is to allow for possible rotations. I am not sure that it is necessary. Consider for instance an example from Maple's help page: with(plottools): c := torus([1,1,1], 1, 5): plots[display](c, scaling=constrained); The result is a graph whose height and width are 3 times bigger than neccesary, even accounting for rotations. I agree with Nathan and Edgardo that this really is a problem, especially if you try to export the graph to another application; the only decent way I found of doing this is to use the handles so that the graph takes up the whole window (in which case the torus itself takes 1/3 of a window) and then clipping the torus itself with graphics software. One should not have to go through this just to get a decent Maple picture. Does anyone have a better workaround? Theodore.

[MUG] Re: Plot and Graphic Sizes
Author: Herman Jaramillo    Posted: 30/11/2000 13:54:25 GMT
>> From: Herman Jaramillo What I do is to export the graphic to PostScript and then fix it there with the BoundingBox corners. It is important to note that here ther is a bug in Maple V (I have not checked Maple other versions). The last two coordinates are swapped. For example, in %%BoundingBox: 163 56 362 299 the coordinates 362 299 should be 299 362 instead. I believe that other formats can be fixed with "xv" and its crop utility under Unix...... In any case Theodore is right and we should have not being doing this outside of Maple. I would like to see a better fix to this problem >> From: Theodore Kolokolnikov > > > From: "Dr Francis J. Wright" > > | >> From: "Nathan Sokalski" > > | > > | Question #1: > > | When plotting a list of 3D graphics using display() (from the plots > > | package), my plot (and the axes) took up only about 1/3 of the space inside] > > | ... > > > > I think the extra space is to allow for possible rotations. > > I am not sure that it is necessary. Consider for instance an example > from Maple's help page: > > with(plottools): > c := torus([1,1,1], 1, 5): > plots[display](c, scaling=constrained); > > The result is a graph whose height and width are 3 times bigger than > neccesary, even accounting for rotations. I agree with Nathan and > Edgardo that this really is a problem, especially if you try to export > the graph to another application; the only decent way I found of doing > this is to use the handles so that the graph takes up the whole window > (in which case the torus itself takes 1/3 of a window) and then clipping > the torus itself with graphics software. One should not have to go > through this just to get a decent Maple picture. > > Does anyone have a better workaround? > > Theodore. -- Herman Jaramillo phone: 713-689-6503 Research Geophysicist fax : 713-689-6100 Baker Hughes (Western Geophysical) email: 3600 Briarpark Drive (77042-5275) P.O. Box 2469 Houston, Texas 77252-2469

[MUG] Re: Plot and Graphic Sizes
Author: John Trapp    Posted: 08/12/2000 13:49:17 GMT
>> From: John Trapp There should be an option that allows one to control the overall size or dimensions of the graph. This can either be expressed as a relative figure (x% of the width and y% of the width for the size of the graph relative to a full page width) or in absolute terms (x inches, y cms). Yes, it is easy enough to adjust the graph when produced but we should not have to do this. John Trapp

Previous by date: [MUG] Write down the charactors of symbol font of Ms-Word,  Ta Quang Son
Next by date: [MUG] Display of Maple procedures, Wilhelm Werner
Previous thread: [MUG] algsubs problem,  Paula R Klink
Next thread: [MUG] Display of Maple procedures, Wilhelm Werner