Struct Uniform

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pub struct Uniform<F> { /* private fields */ }
Expand description

Options for uniform sampling graphs of function ℝ → ℝ. See Sampling::uniform.

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impl<F> Uniform<F>
where F: FnMut(f64) -> f64,

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pub fn n(self, n: usize) -> Self

Set the maximum number of evaluations of the function to build the sampling. Panic if n < 2.

Examples found in repository?
examples/latex_speed.rs (line 16)
6fn main() -> Result<(), Box<dyn Error>> {
7    let path = "/tmp/latex_speed.tex";
8    let mut fh = File::create(path)?;
9    write!(fh, "\\documentclass[12pt,a4paper]{{article}}\n\
10                \\usepackage{{tikz}}\n\
11                \\begin{{document}}\n\
12                \\begin{{tikzpicture}}\n")?;
13    let n = 40_000;
14    println!("Run \"latex {}\" measure LaTeX speed with {} points.\n",
15             path, n);
16    let s = Sampling::uniform(f64::sin, -6., 6.).n(n).build();
17    s.latex().write(&mut fh)?;
18    write!(fh, "\\end{{tikzpicture}}\n\
19                \\end{{document}}")?;
20    Ok(())
21}
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pub fn viewport(self, vp: BoundingBox) -> Self

Set the zone of interest for the sampling. Segments that end up outside this box will not be refined.

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pub fn init<'a, I>(self, ts: I) -> Self
where I: IntoIterator<Item = &'a f64>,

Add initial values of t such that f(t) (see [Sampling :: uniform]) must be included into the sampling in addition to the n evaluations. Only the values between a and b are taken into account (other values are ignored).

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pub fn init_pt<'a, I>(self, pts: I) -> Self
where I: IntoIterator<Item = &'a (f64, f64)>,

Add initial points (t, f(t)) to include into the sampling in addition to the n evaluations. This allows you to use previous evaluations of f. Only the couples with first coordinate t between a and b (see [Sampling :: uniform]) are considered (other values are ignored).

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impl<F> Uniform<F>
where F: FnMut(f64) -> f64,

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pub fn build(self) -> Sampling

Return a uniform sampling of the function.

Examples found in repository?
examples/latex_speed.rs (line 16)
6fn main() -> Result<(), Box<dyn Error>> {
7    let path = "/tmp/latex_speed.tex";
8    let mut fh = File::create(path)?;
9    write!(fh, "\\documentclass[12pt,a4paper]{{article}}\n\
10                \\usepackage{{tikz}}\n\
11                \\begin{{document}}\n\
12                \\begin{{tikzpicture}}\n")?;
13    let n = 40_000;
14    println!("Run \"latex {}\" measure LaTeX speed with {} points.\n",
15             path, n);
16    let s = Sampling::uniform(f64::sin, -6., 6.).n(n).build();
17    s.latex().write(&mut fh)?;
18    write!(fh, "\\end{{tikzpicture}}\n\
19                \\end{{document}}")?;
20    Ok(())
21}
More examples
Hide additional examples
examples/arrows.rs (line 13)
8fn main() -> Result<(), Box<dyn Error>> {
9    let s = Sampling::from_iter([[0., 0.], [1., 1.], [NAN, NAN],
10                                 [1., 1.], [3., -1.]]);
11    s.latex().arrow_pos(0.3).write(&mut File::create("/tmp/arrow0.tex")?)?;
12
13    let s = Sampling::uniform(|x| -0.7 * (x - 1.).powi(2), 0., 2.5).build();
14    s.latex().arrow_pos(0.6).write(&mut File::create("/tmp/arrow1.tex")?)?;
15
16
17    File::create("/tmp/arrows.tex")?.write_all(
18        r"\documentclass{article}
19\usepackage{tikz}
20\begin{document}
21\begin{tikzpicture}[x=3cm, y=3cm]
22  \draw[->] (-1.2, 0) -- (3.2, 0);
23  \draw[->] (0, -1.2) -- (0, 1.7);
24  \foreach \x in {-1, -0.5, 0.5, 1, 1.5,..., 3}{
25    \draw (\x, 3pt) -- (\x, -3pt) node[below]{$\scriptstyle \x$};
26  }
27  \foreach \y in {-1, -0.5, 0.5, 1, 1.5}{
28    \draw (3pt, \y) -- (-3pt, \y) node[left]{$\scriptstyle \y$};
29  }
30  \begin{scope}[color=blue, line width=1pt]
31    \input{arrow0.tex}
32  \end{scope}
33  \begin{scope}[color=orange, line width=1pt]
34    \input{arrow1.tex}
35  \end{scope}
36\end{tikzpicture}
37\end{document}".as_bytes())?;
38
39    std::env::set_current_dir("/tmp")?;
40    Command::new("pdflatex")
41        .args(["-interaction=batchmode", "arrows.tex"]).output()?;
42    Ok(())
43}

Auto Trait Implementations§

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impl<F> Freeze for Uniform<F>
where F: Freeze,

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impl<F> RefUnwindSafe for Uniform<F>
where F: RefUnwindSafe,

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impl<F> !Send for Uniform<F>

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impl<F> !Sync for Uniform<F>

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impl<F> Unpin for Uniform<F>
where F: Unpin,

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impl<F> UnwindSafe for Uniform<F>
where F: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.