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Questions tagged [poly]

Poly is a function in R that generates a basis matrix of polynomial transformations.

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What cause the "Poly object has no attribute 'expand' " error?

I have a 4x4 sympy matrix of polynomials: S = Matrix([[Poly(alpha**4 + alpha**3, alpha, modulus=2), Poly(alpha**4 + alpha**3 + alpha + 1, alpha, modulus=2),Poly(alpha**3 + alpha**2 + alpha, alpha, modulus=2), Poly(alpha**4 + alpha**3 + alpha**2 +…
Ivan Yablochkin
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Is it possible to change the pensize of a drag-able poly in turtle?

I'm trying to change the pensize of a drag-able poly in turtle, so that the poly would have a broad border around it? Here is part of the code: from turtle import Turtle,Shape,Screen def simple_polygon(turtle): shape = Shape("compound") …
Red
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Using VB.NET or C#, how can one draw a polynomial curve for an array of points

In Excel and Powerpoint it is very easy to use the trendline function in a chart or graph to create a polynomial curve. Yet when I am in VB.net to create my custom graphs using the Graphics object and a bitmap I can not figure out how to do the same…
Chris
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How to reduce the size of the generator in sympy.Poly?

Given the formula, I want to convert it to a Poly object and minimize the size of the generator. For example, if my formula is x^2+x+sqrt(x), I would expect to have only sqrt(x) in the generator. But in most of my attempts, the generator contains…
urojony
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Bool function in polynomial

I'm trying to solve this task: "Write a bool sparse function (polynomial p) that takes polynomial p and returns true if 50% or more of the coefficients of polynomial p equals 0." I use header file from my university. #include #include…
ivanm43
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How to read summary result in R?

i fitted 3d scatter with lm, poly function. But i couldnt write real equation from summary bucause some number...code is below. Call: lm(formula = z ~ poly(x, y, degree = 2)) Residuals: Min 1Q Median 3Q Max…
gwang gon Jo
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R: Predicting weather using 2nd order polynomial

I have estimated temperature values for every middle day of the month, and I wish I could create an array of predictions based on those values. So I have two vectors: one contains days and one contains corresponding temperatures. day <- c(15, 45,…
Vlas Trunov
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Sympy .coeff_all() returned list is not readable by scipy

I have question about the data type of the result returned by Sympy Poly.all_coeffs(). I have started to use Sympy just recently. My Sympy transfer function is following: Then I run this code: n,d = fraction(Gs) num = Poly(n,s) den =…
mpeli
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Re-Ordering X,Y Data to define the bottom shape

I have data that is the definition of the shape of a bridge opening. I have developed code that cuts the bridge opening with a horizontal line as if it were the water level, including the intersection points on the bridge piers and walls. I want to…
Rudy Van Drie
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R: bind columns after lapply() the poly() function

I want to add columns containing polynomials to a dataframe (DF). Background: I need to use polynomials in a glmnet setting. I cannot call poly() directly in the glmnet() estimation command. I get an error, likely because my “Xtrain” data contain…
Peter
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3ds max wont weld vertices of poly made from shape

So I have tried to make a glass panel of car headlight by caping, extruding and so on. It didnt work, so I have created a spline from shape I need and somehow turned it into poly and now I am trying to weld vertices to the base. It doesnt work.…
DaveOshiCZ
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