MaplePrimes - answers and comments on Question, How to plot

I think you can use

werner.melzer — Wed, 12 Nov 2008 05:44:52 Z

I think you can use "textplot" command for your purpose.

How to plot

gkokovidis — Wed, 12 Nov 2008 06:32:28 Z

In Maple 12. Plot your function:

>plot(sin(x),x);

Right click on the plot. Go to Axes, then select Properties. Uncheck the box that says: Let the renderer chosse tickmarks. Clcik the Custom Spacing Circle. Then check off the box that says: Multiply by Pi. If the default range is not long enough, then you can change it by assinging a range value to x.

>plot(sin(x),x=-15..15);

I believe this is available in Maple 11 as well. If you are using an earlier version, then see this link.

Regards,
Georgios Kokovidis

Dräger Medical

How to plot.

gkokovidis — Thu, 13 Nov 2008 08:54:32 Z

Your first line, under the command with(plots): has an error in the range.

p1:=plot(sin(x),x=-2*Pi...2*Pi,tickmarks=[0,0],color=black):

should be

p1:=plot(sin(x),x=-2*Pi..2*Pi,tickmarks=[0,0],color=black):

You have an extra dot between -2*Pi and 2*Pi. I do not know if this will fix anything, but it does not help.

Later edit. This does not matter. It will not fix the LaTeX issue.

For your textplot question, here is an example that you can modify for your own use.

restart:
with(plots):
p := plot(sin(x), x = -2*Pi .. 2*Pi, tickmarks = [0, 0], color = black):
t1 := textplot([4*Pi*(1/3)+1, 1, typeset(''y = 2*cos((1/2)*x-(1/6)*Pi)'')], align = above):
t2 := textplot([5, .5, typeset(''y = 2*cos(x/(2*Pi))'')], align = above):
display({p, t1, t2});

You can play with the location values to align the equation wherever you want it.

The above will not work with the Classic V12 interface. Only with the Standard interface.

Regards,
Georgios Kokovidis

Dräger Medical

simplified plots

Doug Meade — Thu, 13 Nov 2008 09:31:30 Z

Can't you get the first plot with a single plot command?

plot( sin(x), x=-2*Pi..2*Pi, color=black, tickmarks=[spacing(Pi/2,0),3] );

You will have, in general, better success with math expressions in plot captions, etc., if you use the typesetting capabilities built-in to plot. For example,

plot( 2*cos(x/2-Pi/6), x=-2*Pi..2*Pi,
      tickmarks=[spacing(Pi/2,0),3],
      title=typeset("A plot of one period of \n", y=2*cos(x/2-Pi/6)) );

As far as creating plots for use in LaTeX, my current process is to manually export the plot to a GIF or JPEG file, then convert each image to a PDF file, which can now be brought into my (pdf)LaTeX documents. (The exporting to a file can be automated using plotsetup.

I think you'll have much more success with this approach.

Doug

---------------------------------------------------------------------
Douglas B. Meade  <><
Math, USC, Columbia, SC 29208  E-mail: mailto:meade@math.sc.edu       
Phone:  (803) 777-6183         URL:    http://www.math.sc.ed

simplified plot

gkokovidis — Thu, 13 Nov 2008 09:59:12 Z

Doug, the above plot command does not actually label the plot with y=2*cos(x/2-Pi/6)). Maple "simplifies" and labels it as y=2*sin(x/2+Pi/3). I realize that these are the same, but the typeset command should just label the plots with whatever we tell it to label them with, and not automatically simplify into another trigonometric form, regardless of the equality of the two statements.

Regards,
Georgios Kokovidis

Dräger Medical

Typeset title in plots

pchin — Thu, 13 Nov 2008 18:08:45 Z

The real reason you're seeing the difference in the titles is because of standard and extended typesetting. The plot system currently uses standard typesetting, even when the user changes the default to extended. However, the call to Typesetting[Typeset] generates the extended typesetting output. We hope to resolve some of these standard/extended typesetting issues in the future. In the meantime, you can use Typesetting[Typeset] to achieve the desired result, but it's one of those "use at your own risk" routines. It's meant to be an internal undocumented routine, but there is some information about it on the Typesetting help page, as it can be useful to users in some cases.

If you are not restricted to generating all parts of the plot programmatically and can adjust it interactively, then the easiest way to get the desired title is to edit the title in place using the context menu.

Paulina Chin
Maplesoft