fastscatterplot.html

jfreechart1。0。2的api。

<FONT color="green">582</FONT>        <a name="line.582"></a>
<FONT color="green">583</FONT>        /**<a name="line.583"></a>
<FONT color="green">584</FONT>         * Draws the gridlines for the plot, if they are visible.<a name="line.584"></a>
<FONT color="green">585</FONT>         *<a name="line.585"></a>
<FONT color="green">586</FONT>         * @param g2  the graphics device.<a name="line.586"></a>
<FONT color="green">587</FONT>         * @param dataArea  the data area.<a name="line.587"></a>
<FONT color="green">588</FONT>         * @param ticks  the ticks.<a name="line.588"></a>
<FONT color="green">589</FONT>         */<a name="line.589"></a>
<FONT color="green">590</FONT>        protected void drawRangeGridlines(Graphics2D g2, Rectangle2D dataArea, <a name="line.590"></a>
<FONT color="green">591</FONT>                                          List ticks) {<a name="line.591"></a>
<FONT color="green">592</FONT>    <a name="line.592"></a>
<FONT color="green">593</FONT>            // draw the range grid lines, if any...<a name="line.593"></a>
<FONT color="green">594</FONT>            if (isRangeGridlinesVisible()) {<a name="line.594"></a>
<FONT color="green">595</FONT>                Stroke gridStroke = getRangeGridlineStroke();<a name="line.595"></a>
<FONT color="green">596</FONT>                Paint gridPaint = getRangeGridlinePaint();<a name="line.596"></a>
<FONT color="green">597</FONT>                if ((gridStroke != null) &amp;&amp; (gridPaint != null)) {<a name="line.597"></a>
<FONT color="green">598</FONT>                    Iterator iterator = ticks.iterator();<a name="line.598"></a>
<FONT color="green">599</FONT>                    while (iterator.hasNext()) {<a name="line.599"></a>
<FONT color="green">600</FONT>                        ValueTick tick = (ValueTick) iterator.next();<a name="line.600"></a>
<FONT color="green">601</FONT>                        double v = this.rangeAxis.valueToJava2D(<a name="line.601"></a>
<FONT color="green">602</FONT>                            tick.getValue(), dataArea, RectangleEdge.LEFT<a name="line.602"></a>
<FONT color="green">603</FONT>                        );<a name="line.603"></a>
<FONT color="green">604</FONT>                        Line2D line = new Line2D.Double(<a name="line.604"></a>
<FONT color="green">605</FONT>                            dataArea.getMinX(), v, dataArea.getMaxX(), v<a name="line.605"></a>
<FONT color="green">606</FONT>                        );<a name="line.606"></a>
<FONT color="green">607</FONT>                        g2.setPaint(gridPaint);<a name="line.607"></a>
<FONT color="green">608</FONT>                        g2.setStroke(gridStroke);<a name="line.608"></a>
<FONT color="green">609</FONT>                        g2.draw(line);                <a name="line.609"></a>
<FONT color="green">610</FONT>                    }<a name="line.610"></a>
<FONT color="green">611</FONT>                }<a name="line.611"></a>
<FONT color="green">612</FONT>            }<a name="line.612"></a>
<FONT color="green">613</FONT>    <a name="line.613"></a>
<FONT color="green">614</FONT>        }<a name="line.614"></a>
<FONT color="green">615</FONT>    <a name="line.615"></a>
<FONT color="green">616</FONT>        /**<a name="line.616"></a>
<FONT color="green">617</FONT>         * Returns the range of data values to be plotted along the axis.<a name="line.617"></a>
<FONT color="green">618</FONT>         *<a name="line.618"></a>
<FONT color="green">619</FONT>         * @param axis  the axis.<a name="line.619"></a>
<FONT color="green">620</FONT>         *<a name="line.620"></a>
<FONT color="green">621</FONT>         * @return The range.<a name="line.621"></a>
<FONT color="green">622</FONT>         */<a name="line.622"></a>
<FONT color="green">623</FONT>        public Range getDataRange(ValueAxis axis) {<a name="line.623"></a>
<FONT color="green">624</FONT>    <a name="line.624"></a>
<FONT color="green">625</FONT>            Range result = null;<a name="line.625"></a>
<FONT color="green">626</FONT>            if (axis == this.domainAxis) {<a name="line.626"></a>
<FONT color="green">627</FONT>                result = this.xDataRange;<a name="line.627"></a>
<FONT color="green">628</FONT>            }<a name="line.628"></a>
<FONT color="green">629</FONT>            else if (axis == this.rangeAxis) {<a name="line.629"></a>
<FONT color="green">630</FONT>                result = this.yDataRange;<a name="line.630"></a>
<FONT color="green">631</FONT>            }<a name="line.631"></a>
<FONT color="green">632</FONT>            return result;<a name="line.632"></a>
<FONT color="green">633</FONT>        }<a name="line.633"></a>
<FONT color="green">634</FONT>    <a name="line.634"></a>
<FONT color="green">635</FONT>        /**<a name="line.635"></a>
<FONT color="green">636</FONT>         * Calculates the X data range.<a name="line.636"></a>
<FONT color="green">637</FONT>         *<a name="line.637"></a>
<FONT color="green">638</FONT>         * @param data  the data.<a name="line.638"></a>
<FONT color="green">639</FONT>         *<a name="line.639"></a>
<FONT color="green">640</FONT>         * @return The range.<a name="line.640"></a>
<FONT color="green">641</FONT>         */<a name="line.641"></a>
<FONT color="green">642</FONT>        private Range calculateXDataRange(float[][] data) {<a name="line.642"></a>
<FONT color="green">643</FONT>            <a name="line.643"></a>
<FONT color="green">644</FONT>            Range result = null;<a name="line.644"></a>
<FONT color="green">645</FONT>            <a name="line.645"></a>
<FONT color="green">646</FONT>            if (data != null) {<a name="line.646"></a>
<FONT color="green">647</FONT>                float lowest = Float.POSITIVE_INFINITY;<a name="line.647"></a>
<FONT color="green">648</FONT>                float highest = Float.NEGATIVE_INFINITY;<a name="line.648"></a>
<FONT color="green">649</FONT>                for (int i = 0; i &lt; data[0].length; i++) {<a name="line.649"></a>
<FONT color="green">650</FONT>                    float v = data[0][i];<a name="line.650"></a>
<FONT color="green">651</FONT>                    if (v &lt; lowest) {<a name="line.651"></a>
<FONT color="green">652</FONT>                        lowest = v;<a name="line.652"></a>
<FONT color="green">653</FONT>                    }<a name="line.653"></a>
<FONT color="green">654</FONT>                    if (v &gt; highest) {<a name="line.654"></a>
<FONT color="green">655</FONT>                        highest = v;<a name="line.655"></a>
<FONT color="green">656</FONT>                    }<a name="line.656"></a>
<FONT color="green">657</FONT>                }<a name="line.657"></a>
<FONT color="green">658</FONT>                if (lowest &lt;= highest) {<a name="line.658"></a>
<FONT color="green">659</FONT>                    result = new Range(lowest, highest);<a name="line.659"></a>
<FONT color="green">660</FONT>                }<a name="line.660"></a>
<FONT color="green">661</FONT>            }<a name="line.661"></a>
<FONT color="green">662</FONT>            <a name="line.662"></a>
<FONT color="green">663</FONT>            return result;<a name="line.663"></a>
<FONT color="green">664</FONT>            <a name="line.664"></a>
<FONT color="green">665</FONT>        }<a name="line.665"></a>
<FONT color="green">666</FONT>    <a name="line.666"></a>
<FONT color="green">667</FONT>        /**<a name="line.667"></a>
<FONT color="green">668</FONT>         * Calculates the Y data range.<a name="line.668"></a>
<FONT color="green">669</FONT>         *<a name="line.669"></a>
<FONT color="green">670</FONT>         * @param data  the data.<a name="line.670"></a>
<FONT color="green">671</FONT>         *<a name="line.671"></a>
<FONT color="green">672</FONT>         * @return The range.<a name="line.672"></a>
<FONT color="green">673</FONT>         */<a name="line.673"></a>
<FONT color="green">674</FONT>        private Range calculateYDataRange(float[][] data) {<a name="line.674"></a>
<FONT color="green">675</FONT>            <a name="line.675"></a>
<FONT color="green">676</FONT>            Range result = null;<a name="line.676"></a>
<FONT color="green">677</FONT>            <a name="line.677"></a>
<FONT color="green">678</FONT>            if (data != null) {<a name="line.678"></a>
<FONT color="green">679</FONT>                float lowest = Float.POSITIVE_INFINITY;<a name="line.679"></a>
<FONT color="green">680</FONT>                float highest = Float.NEGATIVE_INFINITY;<a name="line.680"></a>
<FONT color="green">681</FONT>                for (int i = 0; i &lt; data[0].length; i++) {<a name="line.681"></a>
<FONT color="green">682</FONT>                    float v = data[1][i];<a name="line.682"></a>
<FONT color="green">683</FONT>                    if (v &lt; lowest) {<a name="line.683"></a>
<FONT color="green">684</FONT>                        lowest = v;<a name="line.684"></a>
<FONT color="green">685</FONT>                    }<a name="line.685"></a>
<FONT color="green">686</FONT>                    if (v &gt; highest) {<a name="line.686"></a>
<FONT color="green">687</FONT>                        highest = v;<a name="line.687"></a>
<FONT color="green">688</FONT>                    }<a name="line.688"></a>
<FONT color="green">689</FONT>                }<a name="line.689"></a>
<FONT color="green">690</FONT>                if (lowest &lt;= highest) {<a name="line.690"></a>
<FONT color="green">691</FONT>                    result = new Range(lowest, highest);<a name="line.691"></a>
<FONT color="green">692</FONT>                }<a name="line.692"></a>
<FONT color="green">693</FONT>            }<a name="line.693"></a>
<FONT color="green">694</FONT>            return result;<a name="line.694"></a>
<FONT color="green">695</FONT>            <a name="line.695"></a>
<FONT color="green">696</FONT>        }<a name="line.696"></a>
<FONT color="green">697</FONT>    <a name="line.697"></a>
<FONT color="green">698</FONT>        /**<a name="line.698"></a>
<FONT color="green">699</FONT>         * Multiplies the range on the domain axis/axes by the specified factor.<a name="line.699"></a>
<FONT color="green">700</FONT>         *<a name="line.700"></a>
<FONT color="green">701</FONT>         * @param factor  the zoom factor.<a name="line.701"></a>
<FONT color="green">702</FONT>         * @param info  the plot rendering info.<a name="line.702"></a>
<FONT color="green">703</FONT>         * @param source  the source point.<a name="line.703"></a>
<FONT color="green">704</FONT>         */<a name="line.704"></a>
<FONT color="green">705</FONT>        public void zoomDomainAxes(double factor, PlotRenderingInfo info, <a name="line.705"></a>
<FONT color="green">706</FONT>                                   Point2D source) {<a name="line.706"></a>
<FONT color="green">707</FONT>            this.domainAxis.resizeRange(factor);<a name="line.707"></a>
<FONT color="green">708</FONT>        }<a name="line.708"></a>
<FONT color="green">709</FONT>    <a name="line.709"></a>
<FONT color="green">710</FONT>        /**<a name="line.710"></a>
<FONT color="green">711</FONT>         * Zooms in on the domain axes.<a name="line.711"></a>
<FONT color="green">712</FONT>         * <a name="line.712"></a>
<FONT color="green">713</FONT>         * @param lowerPercent  the new lower bound as a percentage of the current <a name="line.713"></a>
<FONT color="green">714</FONT>         *                      range.<a name="line.714"></a>
<FONT color="green">715</FONT>         * @param upperPercent  the new upper bound as a percentage of the current<a name="line.715"></a>
<FONT color="green">716</FONT>         *                      range.<a name="line.716"></a>
<FONT color="green">717</FONT>         * @param info  the plot rendering info.<a name="line.717"></a>
<FONT color="green">718</FONT>         * @param source  the source point.<a name="line.718"></a>
<FONT color="green">719</FONT>         */<a name="line.719"></a>
<FONT color="green">720</FONT>        public void zoomDomainAxes(double lowerPercent, double upperPercent, <a name="line.720"></a>
<FONT color="green">721</FONT>                                   PlotRenderingInfo info, Point2D source) {<a name="line.721"></a>
<FONT color="green">722</FONT>            this.domainAxis.zoomRange(lowerPercent, upperPercent);<a name="line.722"></a>
<FONT color="green">723</FONT>        }<a name="line.723"></a>
<FONT color="green">724</FONT>    <a name="line.724"></a>
<FONT color="green">725</FONT>        /**<a name="line.725"></a>
<FONT color="green">726</FONT>         * Multiplies the range on the range