COMPGROUPS.NET | Search | Post Question | Groups | Stream | About | Register

### Playing with quadric curves

• Email
• Follow

```
I need to know if Matlab has some tools to play with conics curves
ax^2+by^2+cxy+dx+ey+f=0

thanks

```
 0
Reply hinda32 (12) 3/4/2004 9:43:36 PM

See related articles to this posting

0 Replies
48 Views

Similar Articles

12/5/2013 8:30:52 PM
[PageSpeed]

 Reply:

Similar Artilces:

3d curves
Has anyone ever drawn a sketch on a cylinder and is it even possible? I need to draw shapes on a cylinder that appear as true shapes on the surface of the cylinder kind of like wrapping a piece of paper and sticking it to a cylinder....is this even possible? -- Best Regards, Jeff Folkert Insert -->Feature --> Wrap Jeff Folkert wrote: > Has anyone ever drawn a sketch on a cylinder and is it even possible? I > need to draw shapes on a cylinder that appear as true shapes on the surface > of the cylinder kind of like wrapping a piece of paper and sticking it to a > cy

Coloring curves: not as simple as it sounds..
All, I have a question that looks fairly trivial, but I cannot solve it.... Please help! Thanks, JM Here is a simplified toy example. When I type Plot[{a x /. {a -> 1}, a x^2 /. {a -> 1}, a x^3 /. {a -> 1}}, {x, 0, 2}, PlotStyle -> {Red, Green, Blue}] I get 3 curves with different colors. Well, when I type Plot[{a x, a x^2, a x^3} /. {a -> 1}, {x, 0, 2}, PlotStyle -> {Red, Green, Blue}] I get 3 curves but they are all blue, WHY? However, when I evaluate {a x /. {a -> 1}, a x^2 /. {a -> 1}, a x^3 /. {a -> 1} and {a x, a x^2, a x^3} /. {a -> 1}, they both give the same result....{x, x^2, x^3}. Thank you for your help!!! On 14/04/2011 09:59, Jean-Michel Di Nicola wrote: > All, > > I have a question that looks fairly trivial, but I cannot solve it.... > Please help! > > Thanks, JM > > Here is a simplified toy example. > When I type > Plot[{a x /. {a -> 1}, a x^2 /. {a -> 1}, a x^3 /. {a -> 1}}, {x, 0, > 2}, PlotStyle -> {Red, Green, Blue}] > I get 3 curves with different colors. > > Well, when I type > Plot[{a x, a x^2, a x^3} /. {a -> 1

Fitting curves within error bars
Hey ppl! i have a data set in a txt file. I can import it to matlab workspace into the X and Y vector. Now i can create a data set in the curve fitting toolbox and draw a (3) gaussian fit just as i want. My question is, how can in draw error bars representing the confidence interval for mean, standard error of mean or standar deviation for each data point in the same plot, so in the end i can have the gaussian curve overlooking/going through the error bars? Thanks in advance! Jo?o Domingos

show clipping feature in levels or curves
Hi. I'm exploring gimp and really like all the tutorials at meetthegimp.org In photoshop, you can reveal clipping (overall as well as in individual channels) in both levels and curves (adjustment layers). In curves it's easiest, because you can turn 'show clipping' on and you can put color samplers on locations where clipping occurs while the areas that clip are being displayed or you can use this method of showing clipping to identify the lightest and darkest portions of the image. Is there any obvious way to accomplish something similar to this 'show clipping' feature in gimp? Also. Is there a way to display layer masks as rubylith overlays in gimp like you can do in photoshop? Or is this only more or less possible in quickmask mode? Kind regards and thanks in advance for any comments or suggestions, Niek sobriquet wrote: > Hi. > > I'm exploring gimp and really like all the tutorials at > meetthegimp.org > Thanks for the link. It looks promising. Bookmarked it for later read. > In photoshop, you can reveal clipping (overall as well as in > individual channels) in both levels and curves (adjustment layers). In >

Noah's ArcLength (Parametric Curves)
This new applet in MathEasy Series allows computing length of a curve represented by parametric curve of the form x(t) and y(t). It shows the resulting graph and numerical answer Visit http://www.britishcomputercolleges.com/vu/ArcLengthParam.html Asad "My calculus teacher is a Jesuit Priest at Fordham University and not a Mullah in Tehran" On Mar 26, 9:58=A0am, Dexter <yousaf.a...@gmail.com> wrote: > This new applet in MathEasy Series allows computing length of a curve > represented by parametric curve of the form x(t) and y(t). It shows > the resulting graph and n