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/*
* Copyright (c) 2010-2021 Haifeng Li. All rights reserved.
*
* Smile is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Smile is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Smile. If not, see .
*/
package smile.plot.swing;
import java.awt.Color;
import java.util.Optional;
import smile.math.MathEx;
/**
* Line plot is a special scatter plot which connects points by straight lines.
*
* @author Haifeng Li
*/
public class LinePlot extends Plot {
/**
* The set of lines which may have different stroke, marks, and/or colors.
*/
final Line[] lines;
/**
* The legends of each line.
*/
final Optional legends;
/**
* Constructor.
*/
public LinePlot(Line... lines) {
this.lines = lines;
legends = Optional.empty();
}
/**
* Constructor.
*/
public LinePlot(Line[] lines, Legend[] legends) {
this.lines = lines;
this.legends = Optional.of(legends);
}
@Override
public Optional legends() {
return legends;
}
@Override
public Canvas canvas() {
Canvas canvas = new Canvas(getLowerBound(), getUpperBound());
canvas.add(this);
return canvas;
}
@Override
public double[] getLowerBound() {
double[] bound = MathEx.colMin(lines[0].points);
for (int k = 1; k < lines.length; k++) {
for (double[] x : lines[k].points) {
for (int i = 0; i < x.length; i++) {
if (bound[i] > x[i]) {
bound[i] = x[i];
}
}
}
}
return bound;
}
@Override
public double[] getUpperBound() {
double[] bound = MathEx.colMax(lines[0].points);
for (int k = 1; k < lines.length; k++) {
for (double[] x : lines[k].points) {
for (int i = 0; i < x.length; i++) {
if (bound[i] < x[i]) {
bound[i] = x[i];
}
}
}
}
return bound;
}
@Override
public void paint(Graphics g) {
for (Line line : lines) {
line.paint(g);
}
}
/**
* Creates a line plot.
*/
public static LinePlot of(double[][] data) {
return new LinePlot(Line.of(data));
}
/**
* Creates a line plot.
*/
public static LinePlot of(double[][] data, Line.Style style) {
return new LinePlot(Line.of(data, style));
}
/**
* Creates a line plot.
*/
public static LinePlot of(double[][] data, Color color) {
return new LinePlot(Line.of(data, color));
}
/**
* Creates a line plot.
*/
public static LinePlot of(double[][] data, Line.Style style, Color color) {
return new LinePlot(Line.of(data, style, color));
}
/**
* Creates a line plot.
*/
public static LinePlot of(double[][] data, Line.Style style, Color color, String label) {
Line[] line = {Line.of(data, style, color)};
Legend[] legend = {new Legend(label, color)};
return new LinePlot(line, legend);
}
/**
* Creates a line plot with the index as the x coordinate.
* @param y the data vector of y coordinates.
* The x coordinates will be [0, n), where n is the length of y.
*/
public static LinePlot of(double[] y) {
return of(Line.zipWithIndex(y));
}
/**
* Creates a line plot with the index as the x coordinate.
* @param y the data vector of y coordinates.
* The x coordinates will be [0, n), where n is the length of y.
*/
public static LinePlot of(double[] y, Line.Style style) {
return new LinePlot(Line.of(Line.zipWithIndex(y), style));
}
/**
* Creates a line plot with the index as the x coordinate.
* @param y the data vector of y coordinates.
* The x coordinates will be [0, n), where n is the length of y.
*/
public static LinePlot of(double[] y, Color color) {
return new LinePlot(Line.of(Line.zipWithIndex(y), color));
}
/**
* Creates a line plot with the index as the x coordinate.
* @param y the data vector of y coordinates.
* The x coordinates will be [0, n), where n is the length of y.
*/
public static LinePlot of(double[] y, Line.Style style, Color color) {
return new LinePlot(Line.of(Line.zipWithIndex(y), style, color));
}
/**
* Creates a line plot with the index as the x coordinate.
* @param y the data vector of y coordinates.
* The x coordinates will be [0, n), where n is the length of y.
*/
public static LinePlot of(double[] y, Line.Style style, Color color, String label) {
Line[] line = {Line.of(Line.zipWithIndex(y), style, color)};
Legend[] legend = {new Legend(label, color)};
return new LinePlot(line, legend);
}
}
