matlabfun.htm

matlab函数大全

  <TR>
    <TD width="17%">beta</TD>
    <TD width="33%">beta函数</TD>
    <TD width="17%">gcd</TD>
    <TD width="33%">最大公约数</TD></TR>
  <TR>
    <TD width="17%">betainc</TD>
    <TD width="33%">非完全的beta函数</TD>
    <TD width="17%">lcm</TD>
    <TD width="33%">最小公倍数</TD></TR>
  <TR>
    <TD width="17%">betaln</TD>
    <TD width="33%">beta对数函数</TD>
    <TD width="17%">log2</TD>
    <TD width="33%">分割浮点数</TD></TR>
  <TR>
    <TD width="17%">elipj</TD>
    <TD width="33%">Jacobi椭圆函数</TD>
    <TD width="17%">legendre</TD>
    <TD width="33%">legendre伴随函数</TD></TR>
  <TR>
    <TD width="17%">ellipke</TD>
    <TD width="33%">完全椭圆积分</TD>
    <TD width="17%">pow2</TD>
    <TD width="33%">基2标量浮点数</TD></TR>
  <TR>
    <TD width="17%">erf</TD>
    <TD width="33%">误差函数</TD>
    <TD width="17%">rat</TD>
    <TD width="33%">有理逼近</TD></TR>
  <TR>
    <TD width="17%">erfc</TD>
    <TD width="33%">互补误差函数</TD>
    <TD width="17%">rats</TD>
    <TD width="33%">有理输出</TD></TR></TBODY></TABLE><BR>附录7 坐标转换<A name=fl07></A> 
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    <TD width="16%">函数名</TD>
    <TD width="34%">功能描述</TD>
    <TD width="17%">函数名</TD>
    <TD width="33%">功能描述</TD></TR>
  <TR>
    <TD width="16%">cart2pol</TD>
    <TD width="34%">笛卡儿坐标到极坐标转换</TD>
    <TD width="17%">pol2cart</TD>
    <TD width="33%">极坐标到笛卡儿坐标转换</TD></TR>
  <TR>
    <TD width="16%">cart2sph</TD>
    <TD width="34%">笛卡儿坐标到球面坐标转换</TD>
    <TD width="17%">sph2cart</TD>
    <TD width="33%">球面坐标到笛卡儿坐标转换</TD></TR></TBODY></TABLE><BR>附录8 矩阵函数<A 
name=fl08></A><BR>附录8.1矩阵分析 
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  <TBODY>
  <TR>
    <TD width="16%">函数名</TD>
    <TD width="34%">功能描述</TD>
    <TD width="17%">函数名</TD>
    <TD width="33%">功能描述</TD></TR>
  <TR>
    <TD width="16%">cond</TD>
    <TD width="34%">求矩阵的条件数</TD>
    <TD width="17%">rcond</TD>
    <TD width="33%">LINPACK倒数条件估计</TD></TR>
  <TR>
    <TD width="16%">det</TD>
    <TD width="34%">求矩阵的行列式</TD>
    <TD width="17%">rref</TD>
    <TD width="33%">矩阵的行阶梯型实现</TD></TR>
  <TR>
    <TD width="16%">norm</TD>
    <TD width="34%">求矩阵的范数</TD>
    <TD width="17%">rrefmovie</TD>
    <TD width="33%">消元法解方程演示</TD></TR>
  <TR>
    <TD width="16%">null</TD>
    <TD width="34%">右零空间</TD>
    <TD width="17%">subspace</TD>
    <TD width="33%">子空间</TD></TR>
  <TR>
    <TD width="16%">orth</TD>
    <TD width="34%">正交空间</TD>
    <TD width="17%">trace</TD>
    <TD width="33%">矩阵的迹</TD></TR>
  <TR>
    <TD width="16%">rank</TD>
    <TD width="34%">求矩阵的秩</TD>
    <TD width="17%">&nbsp;</TD>
    <TD width="33%">&nbsp;</TD></TR></TBODY></TABLE><BR>附录8.2线性方程 
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    <TD width="16%">函数名</TD>
    <TD width="34%">功能描述</TD>
    <TD width="17%">函数名</TD>
    <TD width="33%">功能描述</TD></TR>
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    <TD width="16%">/,\</TD>
    <TD width="34%">线性方程求解</TD>
    <TD width="17%">nnls</TD>
    <TD width="33%">非零最小二乘</TD></TR>
  <TR>
    <TD width="16%">chol</TD>
    <TD width="34%">Cholesky分解</TD>
    <TD width="17%">pinv</TD>
    <TD width="33%">求伪逆矩阵</TD></TR>
  <TR>
    <TD width="16%">inv</TD>
    <TD width="34%">矩阵求逆</TD>
    <TD width="17%">qr</TD>
    <TD width="33%">矩阵的QR分解</TD></TR>
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    <TD width="16%">lscov</TD>
    <TD width="34%">最小二乘方差</TD>
    <TD width="17%">qrdelete</TD>
    <TD width="33%">QR分解中删除一行</TD></TR>
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    <TD width="16%">lu</TD>
    <TD width="34%">矩阵的LU三角分解</TD>
    <TD width="17%">qrinsert</TD>
    <TD width="33%">QR分解中插入一行</TD></TR></TBODY></TABLE><BR>附录8.3特征值与奇异值 
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    <TD width="16%">函数名</TD>
    <TD width="34%">功能描述</TD>
    <TD width="16%">函数名</TD>
    <TD width="34%">功能描述</TD></TR>
  <TR>
    <TD width="16%">banlance</TD>
    <TD width="34%">改进特征值精度的均衡变换</TD>
    <TD width="16%">qz</TD>
    <TD width="34%">QZ算法求矩阵特征值</TD></TR>
  <TR>
    <TD width="16%">cdf2rdf</TD>
    <TD width="34%">复块对角阵到实块对角阵转换</TD>
    <TD width="16%">rdf2cdf</TD>
    <TD width="34%">实块对角阵到复块对角阵转换</TD></TR>
  <TR>
    <TD width="16%">eig</TD>
    <TD width="34%">求矩阵的特征值和特征向量</TD>
    <TD width="16%">schur</TD>
    <TD width="34%">Schur分解</TD></TR>
  <TR>
    <TD width="16%">hess</TD>
    <TD width="34%">求Hessenberg矩阵</TD>
    <TD width="16%">svd</TD>
    <TD width="34%">奇异值分解</TD></TR>
  <TR>
    <TD width="16%">poly</TD>
    <TD width="34%">求矩阵的特征多项式</TD>
    <TD width="16%">&nbsp;</TD>
    <TD width="34%">&nbsp;</TD></TR></TBODY></TABLE><BR>附录8.4矩阵函数 
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    <TD width="16%">函数名</TD>
    <TD width="34%">功能描述</TD>
    <TD width="16%">函数名</TD>
    <TD width="34%">功能描述</TD></TR>
  <TR>
    <TD width="16%">expm</TD>
    <TD width="34%">矩阵指数函数</TD>
    <TD width="16%">logm</TD>
    <TD width="34%">矩阵对数函数</TD></TR>
  <TR>
    <TD width="16%">funm</TD>
    <TD width="34%">矩阵任意函数</TD>
    <TD width="16%">sqrtm</TD>
    <TD width="34%">矩阵平方根</TD></TR></TBODY></TABLE><BR>附录9 数据分析与Fourier变换函数<A 
name=fl09></A><BR>附录9.1基本运算 
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  <TR>
    <TD width="16%" height=28>函数名</TD>
    <TD width="34%" height=28>功能描述</TD>
    <TD width="16%" height=28>函数名</TD>
    <TD width="34%" height=28>功能描述</TD></TR>
  <TR>
    <TD width="16%">cumprod</TD>
    <TD width="34%">向量累积</TD>
    <TD width="16%">prod</TD>
    <TD width="34%">对向量中各元素求积</TD></TR>
  <TR>
    <TD width="16%">cumsum</TD>
    <TD width="34%">向量累加</TD>
    <TD width="16%">sort</TD>
    <TD width="34%">对向量中各元素排序</TD></TR>
  <TR>
    <TD width="16%">max</TD>
    <TD width="34%">求向量中最大元素</TD>
    <TD width="16%">sortrows</TD>
    <TD width="34%">对矩阵中各行排序</TD></TR>
  <TR>
    <TD width="16%">min</TD>
    <TD width="34%">求向量中最小元素</TD>
    <TD width="16%">std</TD>
    <TD width="34%">求向量中各元素标准差</TD></TR>
  <TR>
    <TD width="16%">mean</TD>
    <TD width="34%">求向量中各元素均值</TD>
    <TD width="16%">sum</TD>
    <TD width="34%">对向量中各元素求和</TD></TR>
  <TR>
    <TD width="16%">median</TD>
    <TD width="34%">求向量中中间元素</TD>
    <TD width="16%">trapz</TD>
    <TD width="34%">梯形法求数值积分</TD></TR></TBODY></TABLE><BR>附录9.2微分计算 
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    <TD width="16%">函数名</TD>
    <TD width="33%">功能描述</TD>
    <TD width="18%">函数名</TD>
    <TD width="33%">功能描述</TD></TR>
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    <TD width="16%">del2</TD>
    <TD width="33%">离散Laplace变换</TD>
    <TD width="18%">gradient</TD>
    <TD width="33%">梯度计算</TD></TR>
  <TR>
    <TD width="16%">diff</TD>
    <TD width="33%">差分于近视微分</TD>
    <TD width="18%">&nbsp;</TD>
    <TD width="33%">&nbsp;</TD></TR></TBODY></TABLE><BR>附录9.3滤波与卷积 
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  <TR>
    <TD width="16%">函数名</TD>
    <TD width="34%">功能描述</TD>
    <TD width="18%">函数名</TD>
    <TD width="32%">功能描述</TD></TR>
  <TR>
    <TD width="16%">Conv</TD>
    <TD width="34%">卷给与多项式乘法</TD>
    <TD width="18%">filter</TD>
    <TD width="32%">一维数字滤波</TD></TR>
  <TR>
    <TD width="16%">conv2</TD>
    <TD width="34%">二维卷积</TD>
    <TD width="18%">filter2</TD>
    <TD width="32%">二维数字滤波</TD></TR>
  <TR>
    <TD width="16%">Deconv</TD>
    <TD width="34%">因式分解与多项式乘法</TD>
    <TD width="18%">&nbsp;</TD>
    <TD width="32%">&nbsp;</TD></TR></TBODY></TABLE><BR>附录9.4方差处理 
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  <TR>
    <TD width="17%">函数名</TD>
    <TD width="33%">功能描述</TD>
    <TD width="18%">函数名</TD>
    <TD width="32%">功能描述</TD></TR>
  <TR>
    <TD width="17%">corrcoef</TD>
    <TD width="33%">相关系数计算</TD>
    <TD width="18%">cov</TD>
    <TD width="32%">协方差计算</TD></TR></TBODY></TABLE><BR>附录9.5Fourier变换 
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  <TR>
    <TD width="18%">函数名</TD>
    <TD width="32%">功能描述</TD>
    <TD width="19%">函数名</TD>
    <TD width="31%">功能描述</TD></TR>
  <TR>
    <TD width="18%">abs</TD>
    <TD width="32%">绝对值函数</TD>
    <TD width="19%">fftshift</TD>
    <TD width="31%">fft与fft2输出重排</TD></TR>
  <TR>
    <TD width="18%">angle</TD>
    <TD width="32%">相角函数</TD>
    <TD width="19%">ifft</TD>
    <TD width="31%">离散Fourier逆变换</TD></TR>
  <TR>
    <TD width="18%">cplxpair</TD>
    <TD width="32%">依共轭复数对重新排序</TD>
    <TD width="19%">ifft2</TD>
    <TD width="31%">二维离散Fourier逆变换</TD></TR>
  <TR>
    <TD width="18%">fft</TD>
    <TD width="32%">离散Fourier变换</TD>
    <TD width="19%">unwrap</TD>
    <TD width="31%">相角矫正</TD></TR>
  <TR>
    <TD width="18%">fft2</TD>
    <TD width="32%">二维离散Fourier变换</TD>
    <TD width="19%">&nbsp;</TD>
    <TD width="31%">&nbsp;</TD></TR></TBODY></TABLE><BR>附录10 多项式处理函数<A 
name=fl10></A><BR>附录10.1多项式处理 
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    <TD width="18%">函数名</TD>
    <TD width="32%">功能描述</TD>
    <TD width="19%">函数名</TD>
    <TD width="31%">功能描述</TD></TR>
  <TR>
    <TD width="18%">conv</TD>
    <TD width="32%">卷机与多项式乘法</TD>
    <TD width="19%">polyfit</TD>
    <TD width="31%">数据的多项式拟合</TD></TR>
  <TR>
    <TD width="18%">deconv</TD>
    <TD width="32%">因式分解与多项式乘法</TD>
    <TD width="19%">polyval</TD>
    <TD width="31%">多项式求值</TD></TR>
  <TR>
    <TD width="18%">poly</TD>
    <TD width="32%">求矩阵的特征多项式</TD>
    <TD width="19%">polyvalm</TD>
    <TD width="31%">多项式矩阵求值</TD></TR>
  <TR>
    <TD width="18%">polyder</TD>
    <TD width="32%">多项式求导</TD>
    <TD width="19%">residue</TD>
    <TD width="31%">部分分式展开</TD></TR>
  <TR>
    <TD width="18%">polyeig</TD>
    <TD width="32%">多项式特征值</TD>
    <TD width="19%">roots</TD>
    <TD width="31%">求多项式的根</TD></TR></TBODY></TABLE><BR>附录10.2数据插值 
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  <TR>
    <TD width="18%">函数名</TD>
    <TD width="32%">功能描述</TD>
    <TD width="18%">函数名</TD>
    <TD width="32%">功能描述</TD></TR>
  <TR>
    <TD width="18%">griddata</TD>
    <TD width="32%">数据网络的插值生成</TD>
    <TD width="18%">interpft</TD>
    <TD width="32%">一维插值（FFT方法）</TD></TR>
  <TR>
    <TD width="18%">interp1</TD>
    <TD width="32%">一维插值（查表）</TD>
    <TD width="18%">interpn</TD>
    <TD width="32%">多维插值（查表）</TD></TR>
  <TR>
    <TD width="18%">interp2</TD>
    <TD width="32%">二维插值（查表）</TD>
    <TD width="18%">meshgrid</TD>
    <TD width="32%">构造三维图形用x，y阵列</TD></TR>
  <TR>
    <TD width="18%">interp3</TD>
    <TD width="32%">三维插值（查表）</TD>
    <TD width="18%">spline</TD>
    <TD width="32%">三次样条插值</TD></TR></TBODY></TABLE><BR>附录11 非线性数值方法<A 
name=fl11></A> 
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    <TD width="18%">函数名</TD>
    <TD width="32%">功能描述</TD>
    <TD width="18%">函数名</TD>
    <TD width="32%">功能描述</TD></TR>
  <TR>
    <TD width="18%">dblquad</TD>
    <TD width="32%">双重积分</TD>
    <TD width="18%">odeget</TD>
    <TD width="32%">获得微分方程求解的可选参数</TD></TR>
  <TR>
    <TD width="18%">fmin</TD>
    <TD width="32%">单变量最优化函数</TD>
    <TD width="18%">odeset</TD>
    <TD width="32%">设置微分方程求解的可选参数</TD></TR>
  <TR>