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#1 Posted: 2/19/2018 12:34:45 AM
Alvaro

Alvaro

1,078 likes in 1,749 posts.

Group: User

Hi. I'm trying to implement this implicit plot. But can't "cut" the lines in the xy plot. Also, any help about speeding the function is welcome.

Best regards.

Alvaro.

iplot.jpg

iplotq.sm (40.7 KiB) downloaded 996 time(s).
#2 Posted: 2/19/2018 4:35:55 AM
Fridel Selitsky

Fridel Selitsky

520 likes in 451 posts.

Group: User

Try the method of Draghilev

DragilevMet.sm (24.09 KiB) downloaded 673 time(s).
#3 Posted: 2/19/2018 6:07:23 AM
Alvaro

Alvaro

1,078 likes in 1,749 posts.

Group: User

Hi Ber. Thanks for the implementation. But it use maple and is semisymbolic, I want just some that can works in the cloud, like: https://en.smath.info/cloud/sheet/s23Pa6bZUn

Best regards.

Alvaro.
#4 Posted: 2/19/2018 6:38:09 AM
Fridel Selitsky

Fridel Selitsky

520 likes in 451 posts.

Group: User

Option without Maple

DragilevMet1.sm (21.62 KiB) downloaded 688 time(s).
1 users liked this post
frapuano 2/19/2018 7:15:00 AM
#5 Posted: 2/19/2018 7:13:37 AM
Alvaro

Alvaro

1,078 likes in 1,749 posts.

Group: User

Perfect! Thanks.

Best regards.

Alvaro
#6 Posted: 2/19/2018 7:22:41 PM
CBG

CBG

78 likes in 312 posts.

Group: User

Not graphic
It does not show any error

Dragilev_not_plot.png


Best Regards

Carlos
#7 Posted: 2/19/2018 9:28:12 PM
Alvaro

Alvaro

1,078 likes in 1,749 posts.

Group: User

Hi Carlos
For see the error message type B1=


Best regards

Alvaro
#8 Posted: 2/19/2018 11:44:57 PM
CBG

CBG

78 likes in 312 posts.

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Hello Alvaro:
Thank you very much.
The error in the graph is that x is not defined.

What causes this error?
In the graphs published by you it is seen that graphs correctly.

Dragilev_Not_Plot_r1.png


Best Regards

Carlos
#9 Posted: 2/22/2018 3:11:16 AM
Alvaro

Alvaro

1,078 likes in 1,749 posts.

Group: User

Hola Carlos. Try the following, a short version, just for n=2.
Best regards.

Alvaro.

DragilevMet2.sm (12.74 KiB) downloaded 675 time(s).
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Fridel Selitsky 2/22/2018 4:44:00 AM
#10 Posted: 2/22/2018 4:21:24 AM
Fridel Selitsky

Fridel Selitsky

520 likes in 451 posts.

Group: User

Try also the old version of the Draghilev method
DragilevMet3.sm (23.18 KiB) downloaded 645 time(s).
Razonar,thanks for the short code for n = 2
#11 Posted: 2/22/2018 2:45:42 PM
Jean Giraud

Jean Giraud

983 likes in 6,866 posts.

Group: User

Carlos, Alvaro,

From previous use of Dragilev method, I observed great difficulties
to appropriately start/stop rkfixed. Your example above works fine as is.
For more points with less tentatives in specific cases, the easiest way
is to pass it to the closed shape Hermite suite.
I should revisit some of those examples.

The Esplina AI2000 interpolates as well for closed shapes.

Spline Esplina [AI2000].sm (21.79 KiB) downloaded 556 time(s).

Spline Esplina [Hermite].sm (35.44 KiB) downloaded 548 time(s).
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Fridel Selitsky 2/22/2018 3:50:00 PM
#12 Posted: 2/22/2018 3:55:44 PM
CBG

CBG

78 likes in 312 posts.

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By--> Razonar
Quote

Hola Carlos. Try the following, a short version, just for n=2



By--> Ber7
Quote

Try also the old version of the Dragilev method
DragilevMet3.sm (24kb) downloaded 10 time(s)



Hola Alvaro, Hello Ber7,

Thanks for your reply, but the DragilevMet2 and 3 files do not work.

The file of Ber 7 does not show any error, but by requiring the value
of B1 and B2, it says that "x" is not defined.


Attached drawing of the errors.


Hello Jean, your files worked perfectly.


DragilevMet2_3_Not_Work.png


Best Regards

Carlos
#13 Posted: 2/23/2018 3:19:44 AM
Alvaro

Alvaro

1,078 likes in 1,749 posts.

Group: User

Hola Carlos.

It's because a problem with rkfixed routine in your environment. Try to download this, or use it in the cloud: DM_RK

Best regards.

Alvaro.
#14 Posted: 2/23/2018 3:56:57 PM
CBG

CBG

78 likes in 312 posts.

Group: User

Hola Alvaro:
Gracias por tu respuesta.

Thanks for your answer, but I found the fault.
The interference is caused by the Maxima Plugin,
by disabling it, the file works correctly.


DragilevMet2_3_Works_wt_Maxima.png



Best regards


Carlos
#15 Posted: 2/23/2018 11:30:39 PM
CBG

CBG

78 likes in 312 posts.

Group: User

Hola Alvaro

Here too, the problem is caused by the decimal separator "Point",

Changing in options, the decimal separator from "Point" to "Comma", (from "." To ",")
resolves the problem of graphing


Best regards


Carlos
1 users liked this post
Alvaro 2/24/2018 6:48:00 PM
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