ぼ００； - 経済統計練習帳

package pic;
 
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
public class pro {
 String[] data=new String[900000];
    int s,datanumber;
    int[] lon=new int[900000];
    int[] lat=new int[900000];
 
     int[][] point=new int[501][501];
 
    public static void main(String[] args) {
        pro t=new pro();
    }
 
    pro(){
 
        readx("datax.csv");
 
        for(s=2;s<datanumber+1;s++){
    String str=data[s];
 
    String[] x=str.split(",");
 
String y1=x[0].substring(0,2);
String x1=x[0].substring(2,4);
String y2=x[0].substring(4,5);
String x2=x[0].substring(5,6);
String y3=x[0].substring(6,7);
String x3=x[0].substring(7,8);
 
lat[s-1]=80*num_int(x1)+10*num_int(x2)+num_int(x3);
lon[s-1]=80*num_int(y1)+10*num_int(y2)+num_int(y3);       
 
}
 
 
       int maxy=0;
       int maxx=0;
for(s=1;s<datanumber;s++){
if(lon[s]>maxy)maxy=lon[s];    
if(lat[s]>maxx)maxx=lat[s];  
}        
 
System.out.println(maxx+","+maxy);
 
int miny=maxy;
       int minx=maxx;
for(s=1;s<datanumber;s++){
if(lon[s]<miny)miny=lon[s];    
if(lat[s]<minx)minx=lat[s];  
}        
 
for(s=1;s<datanumber;s++){
int x1=500*(lat[s]-minx)/(maxx-minx);    
int y1=500*(lon[s]-miny)/(maxy-miny);    
point[y1][x1]=100;
}
 
graph sub=new graph();
sub.point=point;
sub.makedata("map.jpg");
 
 
 
 
 
 
 
 
    }
 
     int num_int(String str){
 
    int nx;
 
    nx=0;
 
 try{
 
    nx=Integer.parseInt(str);
 
 }catch (Exception e) {}
 
 return nx;
 
 
 
}
 
 
       void readx(String file){
 
String str;
BufferedReader br;  
int s;
s=0;
try {
br = new BufferedReader(new InputStreamReader(new FileInputStream(file),"UTF-8"));  
while((str = br.readLine()) != null) {  
s=s+1;
data[s]=str;  
}
br.close();
} catch (IOException e) {System.out.println(e);}  
 
datanumber=s;
 
} 
 
}
 
 
 
package pic;
 
 
 
import java.awt.*; 
import java.awt.Color;   
import java.awt.image.*;   
import java.awt.image.BufferedImage;   
import java.io.*;   
import javax.imageio.ImageIO;   
import java.awt.Polygon;
 
 
public class graph {
 
 int datanumber;
 int[][] point=new int[501][501];
 
 
 
    void makedata(String file){
 
BufferedImage off = new BufferedImage(500, 500, BufferedImage.TYPE_INT_BGR);   
Graphics offsc = off.getGraphics();  
 
offsc.setColor(Color.white);
offsc.fillRect(0,0,500,500);
 
 offsc.setColor(Color.BLUE);
int s,sx;
 
for(s=1;s<501;s++){
for(sx=1;sx<501;sx++){
if(point[s][sx]>50)offsc.fillRect(sx,500-s,1,1);
}}
 
 
 
 
 
offsc.dispose(); 
 
try { 
ImageIO.write(off, "jpeg", new File(file)); 
} catch (IOException exception) { exception.printStackTrace(); }     
}   
 
 
 
    }