Implicit Plot

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

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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.

iplotq.sm (40 KiB) downloaded 97 time(s).

#2 Posted: 2/19/2018 4:35:55 AM

Fridel Selitsky

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Try the method of Draghilev

DragilevMet.sm (24 KiB) downloaded 58 time(s).

#3 Posted: 2/19/2018 6:07:23 AM

Alvaro Diaz Falconi

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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

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Option without Maple

DragilevMet1.sm (21 KiB) downloaded 59 time(s).

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frapuano 2/19/2018 7:15:00 AM

#5 Posted: 2/19/2018 7:13:37 AM

Alvaro Diaz Falconi

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Perfect! Thanks.

Best regards.

Alvaro

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

CBG

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Not graphic
It does not show any error

Best Regards

Carlos

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

Alvaro Diaz Falconi

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Hi Carlos
For see the error message type B1=

Best regards

Alvaro

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

CBG

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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.

Best Regards

Carlos

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

Alvaro Diaz Falconi

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

Alvaro.

DragilevMet2.sm (12 KiB) downloaded 52 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

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Try also the old version of the Draghilev method
DragilevMet3.sm (23 KiB) downloaded 43 time(s).
Razonar,thanks for the short code for n = 2

#11 Posted: 2/22/2018 2:45:42 PM

Jean Giraud

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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 KiB) downloaded 46 time(s).

Spline Esplina [Hermite].sm (35 KiB) downloaded 47 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

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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.

Best Regards

Carlos

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

Alvaro Diaz Falconi

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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

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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.

Best regards

Carlos

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

CBG

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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

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Alvaro Diaz Falconi 2/24/2018 6:48:00 PM

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