Java tutorial
/* * Copyright 2012, United States Geological Survey or * third-party contributors as indicated by the @author tags. * * This program 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. * * This program 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 this program. If not, see <http://www.gnu.org/licenses/ >. * */ package asl.plotmaker; import java.awt.Color; import java.awt.Font; import java.io.File; import java.io.IOException; import java.util.ArrayList; import org.jfree.chart.ChartUtilities; import org.jfree.chart.JFreeChart; import org.jfree.chart.annotations.XYLineAnnotation; import org.jfree.chart.annotations.XYTextAnnotation; import org.jfree.chart.axis.LogarithmicAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.NumberTickUnit; import org.jfree.chart.plot.CombinedDomainXYPlot; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.XYDotRenderer; import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; import org.jfree.chart.title.TextTitle; import org.jfree.data.Range; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; import org.jfree.ui.TextAnchor; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * @author Mike Hagerty hagertmb@bc.edu */ public class PlotMaker2 { private static final Logger logger = LoggerFactory.getLogger(asl.plotmaker.PlotMaker2.class); private String plotTitle; private ArrayList<Panel> panels; // constructor(s) public PlotMaker2(String title) { this.plotTitle = title; } public void addTraceToPanel(Trace trace, int iPanel) throws PlotMakerException { if (panels == null) { throw new PlotMakerException("== addTraceToPanel: panels == null !!"); } if (iPanel >= panels.size()) { throw new PlotMakerException("== addTraceToPanel: Requested iPanel > panels.size() !!"); } Panel panel = panels.get(iPanel); panel.addTrace(trace); } public void initialize3Panels(String subTitle1, String subTitle2, String subTitle3) { if (panels == null) { panels = new ArrayList<>(3); } Panel panel1 = new Panel(subTitle1); panels.add(panel1); Panel panel2 = new Panel(subTitle2); panels.add(panel2); Panel panel3 = new Panel(subTitle3); panels.add(panel3); } public void writePlot(String fileName) { // System.out.format("== plotTitle=[%s] fileName=[%s]\n", plotTitle, // fileName); File outputFile = new File(fileName); // Check that we will be able to output the file without problems and if // not --> return if (!checkFileOut(outputFile)) { // System.out.format("== plotMaker: request to output plot=[%s] but we are unable to create it " // + " --> skip plot\n", fileName ); logger.warn("== Request to output plot=[{}] but we are unable to create it " + " --> skip plot\n", fileName); return; } NumberAxis horizontalAxis = new NumberAxis("x-axis default"); // x = // domain if (fileName.contains("alnm") || fileName.contains("nlnm") || fileName.contains("coher") || fileName.contains("stn")) { // NLNM or StationDeviation horizontalAxis = new LogarithmicAxis("Period (sec)"); horizontalAxis.setRange(new Range(1, 11000)); horizontalAxis.setTickUnit(new NumberTickUnit(5.0)); } else { // EventCompareSynthetics/StrongMotion horizontalAxis = new NumberAxis("Time (s)"); double x[] = panels.get(0).getTraces().get(0).getxData(); horizontalAxis.setRange(new Range(x[0], x[x.length - 1])); } CombinedDomainXYPlot combinedPlot = new CombinedDomainXYPlot(horizontalAxis); combinedPlot.setGap(15.); // Loop over (3) panels for this plot: for (Panel panel : panels) { NumberAxis verticalAxis = new NumberAxis("y-axis default"); // y = // range if (fileName.contains("alnm") || fileName.contains("nlnm") || fileName.contains("stn")) { // NLNM // or // StationDeviation verticalAxis = new NumberAxis("PSD 10log10(m**2/s**4)/Hz dB"); verticalAxis.setRange(new Range(-190, -80)); verticalAxis.setTickUnit(new NumberTickUnit(5.0)); } else if (fileName.contains("coher")) { // Coherence verticalAxis = new NumberAxis("Coherence, Gamma"); verticalAxis.setRange(new Range(0, 1.2)); verticalAxis.setTickUnit(new NumberTickUnit(0.1)); } else { // EventCompareSynthetics/StrongMotion verticalAxis = new NumberAxis("Displacement (m)"); } Font fontPlain = new Font("Verdana", Font.PLAIN, 14); Font fontBold = new Font("Verdana", Font.BOLD, 18); verticalAxis.setLabelFont(fontBold); verticalAxis.setTickLabelFont(fontPlain); horizontalAxis.setLabelFont(fontBold); horizontalAxis.setTickLabelFont(fontPlain); XYSeriesCollection seriesCollection = new XYSeriesCollection(); XYDotRenderer renderer = new XYDotRenderer(); XYPlot xyplot = new XYPlot(seriesCollection, horizontalAxis, verticalAxis, renderer); xyplot.setDomainGridlinesVisible(true); xyplot.setRangeGridlinesVisible(true); xyplot.setRangeGridlinePaint(Color.black); xyplot.setDomainGridlinePaint(Color.black); // Plot each trace on this panel: int iTrace = 0; for (Trace trace : panel.getTraces()) { XYSeries series = new XYSeries(trace.getName()); double xdata[] = trace.getxData(); double ydata[] = trace.getyData(); for (int k = 0; k < xdata.length; k++) { series.add(xdata[k], ydata[k]); } renderer.setSeriesPaint(iTrace, trace.getColor()); renderer.setSeriesStroke(iTrace, trace.getStroke()); seriesCollection.addSeries(series); iTrace++; } // Add Annotations for each trace - This is done in a separate loop // so that // the upper/lower limits for this panel will be known double xmin = horizontalAxis.getRange().getLowerBound(); double xmax = horizontalAxis.getRange().getUpperBound(); double ymin = verticalAxis.getRange().getLowerBound(); double ymax = verticalAxis.getRange().getUpperBound(); double delX = Math.abs(xmax - xmin); double delY = Math.abs(ymax - ymin); // Annotation (x,y) in normalized units - where upper-right corner = // (1,1) double xAnn = 0.97; // Right center coords of the trace name (e.g., // "00-LHZ") double yAnn = 0.95; double yOff = 0.05; // Vertical distance between different trace // legends iTrace = 0; for (Trace trace : panel.getTraces()) { if (!trace.getName().contains("NLNM") && !trace.getName().contains("NHNM") && !trace.getName().contains("ALNM")) { // x1 > x2 > x3, e.g.: // o-------o 00-LHZ // x3 x2 x1 double scale = .01; // Controls distance between trace label // and line segment double xL = .04; // Length of trace line segment in legend double xAnn2 = xAnn - scale * trace.getName().length(); double xAnn3 = xAnn - scale * trace.getName().length() - xL; double x1 = xAnn * delX + xmin; // Right hand x-coord of // text in range units double x2 = xAnn2 * delX + xmin; // x-coord of line segment // end in range units double x3 = xAnn3 * delX + xmin; // x-coord of line segment // end in range units double y = (yAnn - (iTrace * yOff)) * delY + ymin; if (horizontalAxis instanceof LogarithmicAxis) { double logMin = Math.log10(xmin); double logMax = Math.log10(xmax); delX = logMax - logMin; x1 = Math.pow(10, xAnn * delX + logMin); x2 = Math.pow(10, xAnn2 * delX + logMin); x3 = Math.pow(10, xAnn3 * delX + logMin); } xyplot.addAnnotation(new XYLineAnnotation(x3, y, x2, y, trace.getStroke(), trace.getColor())); XYTextAnnotation xyText = new XYTextAnnotation(trace.getName(), x1, y); xyText.setFont(new Font("Verdana", Font.BOLD, 18)); xyText.setTextAnchor(TextAnchor.CENTER_RIGHT); xyplot.addAnnotation(xyText); } iTrace++; } combinedPlot.add(xyplot, 1); } // panel final JFreeChart chart = new JFreeChart(combinedPlot); chart.setTitle(new TextTitle(plotTitle, new Font("Verdana", Font.BOLD, 18))); chart.removeLegend(); try { ChartUtilities.saveChartAsPNG(outputFile, chart, 1400, 1400); } catch (IOException e) { // System.err.println("Problem occurred creating chart."); logger.error("IOException:", e); } } // writePlot() private Boolean checkFileOut(File file) { // Check that dir either exists or can be created File dir = file.getParentFile(); Boolean allIsOkay = true; if (dir.exists()) { // Dir exists --> check write permissions allIsOkay = dir.isDirectory() && dir.canWrite(); } else { // Dir doesn't exist --> try to make it allIsOkay = dir.mkdirs(); } if (!allIsOkay) { // We were unable to make output dir --> return false return false; } // Check that if file already exists it can be overwritten if (file.exists()) { if (!file.canWrite()) { return false; } } return true; } }