!7

lib 1001955 // charts4j

import com.googlecode.charts4j.*;

import static com.googlecode.charts4j.Color.*;

import static com.googlecode.charts4j.Shape.*;

import static com.googlecode.charts4j.UrlUtil.normalize;

import java.awt.Color;

import java.awt.Shape;

answer {

  if (jmatchStart("chart", s, m)) exceptionToUser {

    S title = s;

    int width = 300, height = 220;

    // Make values

    s = m.rest();

    print("Chart: rest = " + quote(s));

    if (jmatchStart("*", s, m) && isQuoted(m.get(0))) {

      title = unquote(m.get(0));

      s = m.rest();

      print("Chart: rest2 = " + quote(s));

    }

    Double base = null;

    if (jmatchStart("base *", s, m)) {

      base = parseDouble(m.unq(0));

      s = m.rest();

    }

    L<S> tok = asList(s.split(" +"));

    if (!empty(tok)) {

      final int NUM_POINTS = l(tok);

      final double[] values = new double[NUM_POINTS];

      for (int i = 0; i < NUM_POINTS; i++)

        values[i] = parseDouble(tok.get(i));

      print("Chart values: " + structure(values));

      double minValue = base != null ? base : min(values), maxValue = max(values);

      print("Chart: min/max=" + minValue + "/" + maxValue);

      Line line1 = Plots.newLine(DataUtil.scaleWithinRange(minValue, maxValue, values), com.googlecode.charts4j.Color.newColor("CA3D05"), ""/*valuesTitle*/);

      line1.setLineStyle(LineStyle.newLineStyle(3, 1, 0));

      line1.addShapeMarkers(DIAMOND, newColor("CA3D05"), 12);

      line1.addShapeMarkers(DIAMOND, WHITE, 8);

      // Defining chart.

      LineChart chart = GCharts.newLineChart(line1);

      chart.setSize(width, height);

      chart.setTitle(title, BLACK, 14);

      //chart.setGrid(25, 25, 3, 2);

      // Adding axis info to chart.

      // Let's try this... works with positive values

      chart.addYAxisLabels(AxisLabelsFactory.newNumericRangeAxisLabels(minValue, maxValue));

      // Defining background and chart fills.

      /*

      chart.setBackgroundFill(Fills.newSolidFill(newColor("1F1D1D")));

      LinearGradientFill fill = Fills.newLinearGradientFill(0, newColor("363433"), 100);

      fill.addColorAndOffset(newColor("2E2B2A"), 0);

      chart.setAreaFill(fill);

      */

      ret returnImage(chart.toURLString());

    }

  }

}