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Java 大數(shù)據(jù)統(tǒng)計(jì) 折線圖
你可以試試chrome加birt。其實(shí)jvm內(nèi)存是有限的，幾百萬(wàn)個(gè)點(diǎn)很快就吃光你的內(nèi)存了。
為新?lián)岬鹊貐^(qū)用戶提供了全套網(wǎng)頁(yè)設(shè)計(jì)制作服務(wù)，及新?lián)峋W(wǎng)站建設(shè)行業(yè)解決方案。主營(yíng)業(yè)務(wù)為網(wǎng)站設(shè)計(jì)制作、成都網(wǎng)站制作、新?lián)峋W(wǎng)站設(shè)計(jì)，以傳統(tǒng)方式定制建設(shè)網(wǎng)站，并提供域名空間備案等一條龍服務(wù)，秉承以專業(yè)、用心的態(tài)度為用戶提供真誠(chéng)的服務(wù)。我們深信只要達(dá)到每一位用戶的要求，就會(huì)得到認(rèn)可，從而選擇與我們長(zhǎng)期合作。這樣，我們也可以走得更遠(yuǎn)！
如果你用birt雖然后臺(tái)畫(huà)的時(shí)候慢一點(diǎn)，但是結(jié)果就是一個(gè)網(wǎng)頁(yè)展示jpg圖片，所以前端用戶那里應(yīng)該還是比較快的。
如何用java 畫(huà)折線圖
package?com.lei.jfreechart;
import?javax.swing.JPanel;
import?org.jfree.chart.ChartFactory;
import?org.jfree.chart.ChartPanel;
import?org.jfree.chart.JFreeChart;
import?org.jfree.chart.axis.NumberAxis;
import?org.jfree.chart.plot.CategoryPlot;
import?org.jfree.chart.plot.PlotOrientation;
import?org.jfree.data.category.DefaultCategoryDataset;
import?org.jfree.ui.ApplicationFrame;
import?org.jfree.ui.RefineryUtilities;
public?class?LineCharts?extends?ApplicationFrame?{
/**
*?
*/
private?static?final?long?serialVersionUID?=?1L;
public?LineCharts(String?s)?{
super(s);
setContentPane(createDemoLine());
}
public?static?void?main(String[]?args)?{
LineCharts?fjc?=?new?LineCharts("折線圖");
fjc.pack();
RefineryUtilities.centerFrameOnScreen(fjc);
fjc.setVisible(true);
}
//?生成顯示圖表的面板
public?static?JPanel?createDemoLine()?{
JFreeChart?jfreechart?=?createChart(createDataset());
return?new?ChartPanel(jfreechart);
}
//?生成圖表主對(duì)象JFreeChart
public?static?JFreeChart?createChart(DefaultCategoryDataset?linedataset)?{
//?定義圖表對(duì)象
JFreeChart?chart?=?ChartFactory.createLineChart("一季度銷售曲線",?//折線圖名稱
"時(shí)間",?//?橫坐標(biāo)名稱
"銷售額(百萬(wàn))",?//?縱坐標(biāo)名稱
linedataset,?//?數(shù)據(jù)
PlotOrientation.VERTICAL,?//?水平顯示圖像
true,?//?include?legend
true,?//?tooltips
false?//?urls
);
CategoryPlot?plot?=?chart.getCategoryPlot();
plot.setRangeGridlinesVisible(true);?//是否顯示格子線
plot.setBackgroundAlpha(0.3f);?//設(shè)置背景透明度
NumberAxis?rangeAxis?=?(NumberAxis)plot.getRangeAxis();
rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
rangeAxis.setAutoRangeIncludesZero(true);
rangeAxis.setUpperMargin(0.20);
rangeAxis.setLabelAngle(Math.PI?/?2.0);
return?chart;
}
//?生成數(shù)據(jù)
public?static?DefaultCategoryDataset?createDataset()?{
DefaultCategoryDataset?linedataset?=?new?DefaultCategoryDataset();
//?各曲線名稱
String?series1?=?"冰箱";
String?series2?=?"彩電";
String?series3?=?"洗衣機(jī)";
//?橫軸名稱(列名稱)
String?type1?=?"1月";
String?type2?=?"2月";
String?type3?=?"3月";
linedataset.addValue(0.0,?series1,?type1);
linedataset.addValue(4.2,?series1,?type2);
linedataset.addValue(3.9,?series1,?type3);
linedataset.addValue(1.0,?series2,?type1);
linedataset.addValue(5.2,?series2,?type2);
linedataset.addValue(7.9,?series2,?type3);
linedataset.addValue(2.0,?series3,?type1);
linedataset.addValue(9.2,?series3,?type2);
linedataset.addValue(8.9,?series3,?type3);
return?linedataset;
}
}
網(wǎng)友分享，看看是否能幫到你
如何在netbeans6.8中用Java語(yǔ)言繪制類型于下圖的折線圖，要有詳細(xì)代碼
public?class?XYJFrame?extends?javax.swing.JFrame?{
/**
*?Creates?new?form?XYJFrame
*/
public?XYJFrame()?{
initComponents();
iniCoordinate();
}
/**
*?Netbeans?生成的代碼，用于界面設(shè)計(jì)
*/
@SuppressWarnings("unchecked")
//?editor-fold?defaultstate="collapsed"?desc="Generated?Code"??????????????????????????
private?void?initComponents()?{
lblXCoordinate?=?new?javax.swing.JLabel();
lblYCoordinate?=?new?javax.swing.JLabel();
txtXCoordinate?=?new?javax.swing.JTextField();
txtYCoordinate?=?new?javax.swing.JTextField();
btnCalculateY?=?new?javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
lblXCoordinate.setText("X?坐標(biāo)");
lblYCoordinate.setText("Y?坐標(biāo)");
btnCalculateY.setText("計(jì)算?Y?坐標(biāo)");
btnCalculateY.addActionListener(new?java.awt.event.ActionListener()?{
public?void?actionPerformed(java.awt.event.ActionEvent?evt)?{
btnCalculateYActionPerformed(evt);
}
});
javax.swing.GroupLayout?layout?=?new?javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(37,?37,?37)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(lblXCoordinate)
.addComponent(lblYCoordinate))
.addGap(29,?29,?29)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING,?false)
.addComponent(txtXCoordinate)
.addComponent(txtYCoordinate,?javax.swing.GroupLayout.DEFAULT_SIZE,?165,?Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING,?layout.createSequentialGroup()
.addComponent(btnCalculateY)
.addGap(30,?30,?30)))
.addContainerGap(131,?Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(70,?70,?70)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(lblXCoordinate)
.addComponent(txtXCoordinate,?javax.swing.GroupLayout.PREFERRED_SIZE,?javax.swing.GroupLayout.DEFAULT_SIZE,?javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(24,?24,?24)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(lblYCoordinate)
.addComponent(txtYCoordinate,?javax.swing.GroupLayout.PREFERRED_SIZE,?javax.swing.GroupLayout.DEFAULT_SIZE,?javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(28,?28,?28)
.addComponent(btnCalculateY)
.addContainerGap(103,?Short.MAX_VALUE))
);
pack();
}//?/editor-fold???????????????????????
private?void?btnCalculateYActionPerformed(java.awt.event.ActionEvent?evt)?{??????????????????????????????????????????????
this.txtYCoordinate.setText(this.calculateY()?+?"");
}????????????????????????????????????????????
/**
*?@param?args?the?command?line?arguments
*/
public?static?void?main(String?args[])?{
/*?Set?the?Nimbus?look?and?feel?*/
//editor-fold?defaultstate="collapsed"?desc="?Look?and?feel?setting?code?(optional)?"
/*?If?Nimbus?(introduced?in?Java?SE?6)?is?not?available,?stay?with?the?default?look?and?feel.
*?For?details?see??
*/
try?{
for?(javax.swing.UIManager.LookAndFeelInfo?info?:?javax.swing.UIManager.getInstalledLookAndFeels())?{
if?("Nimbus".equals(info.getName()))?{
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
}?catch?(ClassNotFoundException?ex)?{
java.util.logging.Logger.getLogger(XYJFrame.class.getName()).log(java.util.logging.Level.SEVERE,?null,?ex);
}?catch?(InstantiationException?ex)?{
java.util.logging.Logger.getLogger(XYJFrame.class.getName()).log(java.util.logging.Level.SEVERE,?null,?ex);
}?catch?(IllegalAccessException?ex)?{
java.util.logging.Logger.getLogger(XYJFrame.class.getName()).log(java.util.logging.Level.SEVERE,?null,?ex);
}?catch?(javax.swing.UnsupportedLookAndFeelException?ex)?{
java.util.logging.Logger.getLogger(XYJFrame.class.getName()).log(java.util.logging.Level.SEVERE,?null,?ex);
}
///editor-fold
/*?Create?and?display?the?form?*/
java.awt.EventQueue.invokeLater(new?Runnable()?{
public?void?run()?{
new?XYJFrame().setVisible(true);
}
});
}
private?void?iniCoordinate()?{
//?轉(zhuǎn)折點(diǎn)?X?坐標(biāo)
dbXCoordinate?=?new?double[]?{?0,?0.1,?0.3,?0.5,?1?};
//?轉(zhuǎn)折點(diǎn)?Y?坐標(biāo)
dbYCoordinate?=?new?double[]?{?0,?0.4,?0.7,?0.85,?1?};????????
}
//?計(jì)算?Y?坐標(biāo)
private?double?calculateY()?{
double?xCoordinate?=?Double.parseDouble(this.txtXCoordinate.getText());
int?xPos?=?getXPositon(xCoordinate);
return?xPos?==?-1???-1?:?(dbYCoordinate[xPos]?*?xCoordinate)?/?dbXCoordinate[xPos];
}
//?得到輸入的?X?值位置，確定比率
private?int?getXPositon(double?xCoordinate)?{
for(int?i=0;?i??dbXCoordinate.length;?i++)?{
if(xCoordinate?=?dbXCoordinate[i])?{
return?i;
}
}
return?-1;
}
private?double[]?dbXCoordinate?=?new?double[5];
private?double[]?dbYCoordinate?=?new?double[5];
private?double[]?rate?=?new?double[5];
//?Variables?declaration?-?do?not?modify?????????????????????
private?javax.swing.JButton?btnCalculateY;
private?javax.swing.JLabel?lblXCoordinate;
private?javax.swing.JLabel?lblYCoordinate;
private?javax.swing.JTextField?txtXCoordinate;
private?javax.swing.JTextField?txtYCoordinate;
//?End?of?variables?declaration???????????????????
}
java從數(shù)據(jù)庫(kù)中讀取數(shù)據(jù)畫(huà)曲線圖
1、自己編寫(xiě)java程序，也就幾十行代碼，先訪問(wèn)數(shù)據(jù)庫(kù)取數(shù)，再封裝數(shù)據(jù).
2、很多啊，eclipse,myeclipse,jbuilder。。。
3、getconnection()
String DBDriver = SysConfig.getProperty("database.defaultProvider.driver");
String DBUser = SysConfig.getProperty("database.defaultProvider.username");
String DBPassword = SysConfig.getProperty("database.defaultProvider.password");
String DBUrl = SysConfig.getProperty("database.defaultProvider.serverURL");
//
Class.forName(DBDriver);
Properties myprop = System.getProperties();
myprop.setProperty("user",DBUser);
myprop.setProperty("password",DBPassword);
conn = DriverManager.getConnection(DBUrl,myprop);
..........
PreparedStatement pstmt = conn.prepareStatement(query);
ResultSet rs = pstmt.executeQuery();
.......
4.下載jfreechart的jar包，調(diào)用里面的方法，參考它的api,就是一步一步的多試驗(yàn)下
操作java折線圖代碼的目的是什么
自由配置圖表。操作java折線圖代碼，可以自由配置圖表的各個(gè)屬性，用來(lái)達(dá)到自己的要求和目的。Java是一門面向?qū)ο蟮木幊陶Z(yǔ)言，不僅吸收了C++語(yǔ)言的各種優(yōu)點(diǎn)，還摒棄了C++里難以理解的多繼承、指針等概念，因此Java語(yǔ)言具有功能強(qiáng)大和簡(jiǎn)單易用兩個(gè)特征。
網(wǎng)頁(yè)題目：java代碼畫(huà)折線圖,java畫(huà)曲線圖
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