Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* Copyright (c) 2023. JetBrains s.r.o.
* Use of this source code is governed by the MIT license that can be found in the LICENSE file.
*/
package org.jetbrains.letsPlot.geom
import org.jetbrains.letsPlot.Geom
import org.jetbrains.letsPlot.Stat
import org.jetbrains.letsPlot.intern.Layer
import org.jetbrains.letsPlot.intern.Options
import org.jetbrains.letsPlot.intern.layer.*
import org.jetbrains.letsPlot.intern.layer.geom.LineAesthetics
import org.jetbrains.letsPlot.intern.layer.geom.LineMapping
import org.jetbrains.letsPlot.intern.standardizing.SeriesStandardizing.asList
import org.jetbrains.letsPlot.intern.standardizing.SeriesStandardizing.isListy
import org.jetbrains.letsPlot.pos.positionIdentity
import org.jetbrains.letsPlot.tooltips.TooltipOptions
@Suppress("ClassName")
/**
* Computes and draws a function.
*
* ## Examples
*
*
* @param data The data to be displayed in this layer. If null, the default, the data
* is inherited from the plot data as specified in the call to [letsPlot][org.jetbrains.letsPlot.letsPlot].
* @param stat The statistical transformation to use on the data for this layer.
* Supported transformations: `Stat.identity`, `Stat.bin()`, `Stat.count()`, etc. see [Stat][org.jetbrains.letsPlot.Stat].
* @param position Position adjustment: `positionIdentity`, `positionStack()`, `positionDodge()`, etc.
* see [Position](https://lets-plot.org/kotlin/-lets--plot--kotlin/org.jetbrains.letsPlot.pos/).
* @param showLegend default = true.
* false - do not show legend for this layer.
* @param inheritAes default = true.
* false - do not combine the layer aesthetic mappings with the plot shared mappings.
* @param manualKey String or result of the call to the `layerKey()` function.
* The key to show in the manual legend. Specifies the text for the legend label or advanced settings using the `layerKey()` function.
* @param tooltips Result of the call to the `layerTooltips()` function.
* Specifies appearance, style and content.
* @param fn A function to use.
* @param xlim default = Pair(0, 1).
* Range of the function.
* @param n default = 512.
* Number of points to interpolate along the x axis.
* @param x X-axis value.
* @param y Y-axis value.
* @param alpha Transparency level of a layer.
* Understands numbers between 0 and 1.
* @param color Color of the geometry.
* For more info see: [aesthetics.html#color-and-fill](https://lets-plot.org/kotlin/aesthetics.html#color-and-fill).
* @param linetype Type of the line.
* Accept codes or names (0 = "blank", 1 = "solid", 2 = "dashed", 3 = "dotted", 4 = "dotdash", 5 = "longdash", 6 = "twodash"),
* a hex string (up to 8 digits for dash-gap lengths),
* or a pattern `offset to listOf(dash, gap, ...)` / `listOf(dash, gap, ...)`.
* For more info see: [aesthetics.html#line-types](https://lets-plot.org/kotlin/aesthetics.html#line-types).
* @param size Line width.
* @param colorBy default = "color" ("fill", "color", "paint_a", "paint_b", "paint_c").
* Defines the color aesthetic for the geometry.
* @param mapping Set of aesthetic mappings.
* Aesthetic mappings describe the way that variables in the data are
* mapped to plot "aesthetics".
*/
class geomFunction(
data: Map<*, *>? = null,
stat: StatOptions = Stat.identity,
geom: GeomOptions = Geom.line(),
position: PosOptions = positionIdentity,
showLegend: Boolean = true,
inheritAes: Boolean? = null,
manualKey: Any? = null,
tooltips: TooltipOptions? = null,
fn: ((Double) -> Double)? = null,
xlim: Pair? = null,
n: Int? = null,
override val x: Number? = null,
override val y: Number? = null,
override val alpha: Number? = null,
override val color: Any? = null,
override val linetype: Any? = null,
override val size: Number? = null,
override val colorBy: String? = null,
mapping: LineMapping.() -> Unit = {},
) : LineAesthetics,
WithColorOption,
Layer(
mapping = getMapping(mapping),
data = getFunData(data, mapping, fn, xlim, n),
geom = geom,
stat = stat,
position = position,
showLegend = showLegend,
inheritAes = inheritAes,
manualKey = manualKey,
sampling = null,
tooltips = tooltips
) {
override fun seal() = super.seal() +
super.seal()
companion object {
private const val FUN_X_NAME = "x"
private const val FUN_Y_NAME = "y"
private val DEF_X_LIM = Pair(0, 1)
private const val DEF_SIZE = 512
private fun getMapping(mapping: LineMapping.() -> Unit): Options {
val dict = LineMapping().apply(mapping).seal().map
return Options(mapOf("x" to FUN_X_NAME) + dict + ("y" to FUN_Y_NAME))
}
private fun getFunData(
data: Map<*, *>?,
mapping: LineMapping.() -> Unit,
fn: ((Double) -> Double)? = null,
xlim: Pair? = null,
n: Int? = null,
): Map<*, *> {
val mappingDict = LineMapping().apply(mapping).seal().map
val aesXValue = mappingDict["x"]
val xs: List = when {
aesXValue is String && data != null -> {
require(aesXValue in data) { "'$aesXValue' is not found in data" }
val values = data[aesXValue]!!
require(isListy(values)) { "'$aesXValue' must contain a list of values" }
val list = asList(values)
require(list.all { it is Number? }) { "'$aesXValue' must contain only numbers: $list" }
list.map { (it as? Number)?.toDouble() }
}
else -> getDefaultXRange(xlim, n)
}
val ys: List = when (fn) {
null -> List(xs.size) { null }
else -> xs.map { x -> x?.let(fn) }
}
return data?.plus(mapOf(FUN_Y_NAME to ys)) ?: mapOf(FUN_X_NAME to xs, FUN_Y_NAME to ys)
}
private fun getDefaultXRange(xlim: Pair?, n: Int?): List {
fun linspace(start: Double, stop: Double, num: Int): List {
if (num == 1) {
return listOf(start)
}
val step = (stop - start) / (num - 1)
return List(num) { start + step * it }
}
val (start, stop) = xlim ?: DEF_X_LIM
val size = n ?: DEF_SIZE
return linspace(start.toDouble(), stop.toDouble(), size)
}
}
}
