如何用r語(yǔ)言分組求均值
如何用r語(yǔ)言分組求均值
炎炎設(shè)計(jì)
2019-03-03 04:04:23
2 回答
慕碼人8056858
TA貢獻(xiàn)1803條經(jīng)驗(yàn) 獲得超6個(gè)贊
執(zhí)行語(yǔ)句寫在方法里面sai :
public class dbbean {
public Connection getOrcaleConn(){
try{
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
Connection con=DriverManager.getConnection("jdbc:oracle:thin:@133.81.9.101:1521:tongji","tongji","qazwsx");
}
catch(SQLException ce){
ce.printStackTrace();
}
return con;
}
}
皈依舞
TA貢獻(xiàn)1851條經(jīng)驗(yàn) 獲得超3個(gè)贊
vec = vector(length =1000)
for(i in 1:1000)
vec[i] = UR_FUNC()
mean(vec)
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