iop31248 发表于 2006-5-18 21:57

求助：怎样用matlab作数据拟合

<P ><FONT size=3>地理位置热度系数在各年以及<FONT face="Times New Roman">5</FONT>年平均情况：<p></p></FONT></P>
<P>
<TABLEcellSpacing=0 cellPadding=0 width=525 border=0>

<TR >
<TDnoWrap width=93>
<Palign=center><B>地理位置</B><B><p></p></B></P></TD>
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman"><B>I 1</B><B><p></p></B></FONT></P></TD>
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman"><B>I2</B><B><p></p></B></FONT></P></TD>
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman"><B>I3</B><B><p></p></B></FONT></P></TD>
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman"><B>I4</B><B><p></p></B></FONT></P></TD>
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman"><B>I5</B><B><p></p></B></FONT></P></TD>
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman"><B>I</B><B><p></p></B></FONT></P></TD></TR>
<TR >
<TDnoWrap>
<Palign=center><B><FONT face="Times New Roman">A. </FONT></B><B>北京</B><B><p></p></B></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.162<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.228<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.212<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.213<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.183<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.200<p></p></FONT></P></TD></TR>
<TR >
<TDnoWrap>
<Palign=center><B><FONT face="Times New Roman">B. </FONT></B><B>上海</B><B><p></p></B></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.160 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.236 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.178 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.220 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.187 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.196 <p></p></FONT></P></TD></TR>
<TR >
<TDnoWrap>
<Palign=center><B><FONT face="Times New Roman">C. </FONT></B><B>天津</B><B><p></p></B></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.166<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.18<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.204<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.182<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.155<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.177<p></p></FONT></P></TD></TR>
<TR >
<TDnoWrap>
<Palign=center><B><FONT face="Times New Roman">D.</FONT></B><B>武汉</B><B><p></p></B></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.100 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.159 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.141 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.164 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.125 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.138 <p></p></FONT></P></TD></TR>
<TR >
<TDnoWrap>
<Palign=center><B><FONT face="Times New Roman">E.</FONT></B><B>东北</B><B><p></p></B></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.117<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.032<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.144<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.109<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.115<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.103<p></p></FONT></P></TD></TR>
<TR >
<TDnoWrap>
<Palign=center><B><FONT face="Times New Roman">F.</FONT></B><B>江浙</B><B><p></p></B></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.164<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.2<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.21<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.217<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.149<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.188<p></p></FONT></P></TD></TR>
<TR >
<TDnoWrap>
<Palign=center><B><FONT face="Times New Roman">G.</FONT></B><B>东南沿海</B><B><p></p></B></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.073 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.182 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.036 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.145 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.120 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.111 <p></p></FONT></P></TD></TR>
<TR >
<TDnoWrap>
<Palign=center><B><FONT face="Times New Roman">H.</FONT></B><B>内地欠发达</B><B><p></p></B></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.161 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.214 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.204 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.191 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.110 <p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.176 <p></p></FONT></P></TD></TR></TABLE></P>
<P ><FONT size=3>用<FONT face="Times New Roman">Matlab</FONT>拟合的方法分别对地区<FONT face="Times New Roman">A-H</FONT>的<FONT face="Times New Roman">I<SUB>1</SUB>-I<SUB>5</SUB></FONT>进行拟合，从中得到各地区<FONT face="Times New Roman">I</FONT>的变化规律从而估测<FONT face="Times New Roman">I<SUB>6</SUB></FONT>，得到<B>最终结论</B>：<p></p></FONT></P>
<P ><p><FONT face="Times New Roman" size=3> </FONT></p></P>
<TABLEcellSpacing=0 cellPadding=0 width=576 border=0>

<TR >
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman">A. </FONT>北京<p></p></P></TD>
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman">B. </FONT>上海<p></p></P></TD>
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman">C. </FONT>天津<p></p></P></TD>
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman">D. </FONT>武汉<p></p></P></TD>
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman">E. </FONT>东北<p></p></P></TD>
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman">F. </FONT>江浙<p></p></P></TD>
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman">G. </FONT>东南沿海<p></p></P></TD>
<TDnoWrap width=72>
<Palign=center><FONT face="Times New Roman">H. </FONT>内陆<p></p></P></TD></TR>
<TR >
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.2066<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.1988<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.1769<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.148<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.1028<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.1874<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.123<p></p></FONT></P></TD>
<TDnoWrap>
<Palign=center><FONT face="Times New Roman">0.1812</FONT><p></p></P></TD></TR></TABLE><BR>我就不明白他是怎么拟合的，谁能帮我一下，如果可以的话把代码给我写一下，多谢了！我要是再不能弄出来，老师会很生气，后果很严重。

xjzhang 发表于 2006-5-18 23:10

<P>你试一试灰色预测！</P>

gfkdgpsb_1 发表于 2006-5-19 00:12

用ｃｆｔｏｏｌ，很好用的！！！

amlijiang 发表于 2006-5-22 21:47

<P>先分别把各个地区的散点图，scatter或plot都行，然后在菜单里面的tool里面选择basic filting就可以用不同的方法拟合出来了。</P>
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