[求助]生成dem的问题

<P>画好了等高线和高程点，想问生成dem的步骤.?谢谢了</P>
<P>                                     </P>

arctoolbox的spatial analyst tools的interpolation中的topo to raster

arctoolbox的spatial analyst tools的interpolation中的topo to raster

先要生成tin。

<P 0cm 0cm 0pt">思路：输入点坐标矩阵à三角化à插值à绘制等高线<p></p></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">%-- <st1:chsdate w:st="on" IsROCDate="False" IsLunarDate="False" Day="24" Month="12" Year="2007">07-12-24</st1:chsdate>  </FONT>下午<FONT face="Times New Roman">12:43 --%<p></p></FONT></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">>> clear<p></p></FONT></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">>> x=[1; 2; 3; 4; 5; 6; 7; 8; 9; 10];<p></p></FONT></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">>> y=[21; 12; 13; 14; 15; 16; 17; 18; 11; 19];<p></p></FONT></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">>> z=[21.2; 22.8; 21.7; 22.9; 21.2; 22.5; 21.3; 22.5; 21.5; 22.7];<p></p></FONT></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">>> step=[20 21 22 23 24 25 26];         %  </FONT>等高距<FONT face="Times New Roman"><st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="1" UnitName="m">1m</st1:chmetcnv>  %<p></p></FONT></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">>> plot(x,y,'.','markersize',10)<p></p></FONT></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">>> tri=delaunay(x,y);<p></p></FONT></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">>> hold on, triplot(tri,x,y),hold off<p></p></FONT></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">>> trimesh(tri,x,y,z)<p></p></FONT></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">>> [xi,yi]=meshgrid(0:0.01:11,10:0.01:22);<p></p></FONT></P>
<P 0cm -12.6pt 0pt 0cm; mso-para-margin-right: -1.2gd"><FONT face="Times New Roman">>> zi=griddata(x,y,z,xi,yi,'v4');<p></p></FONT></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">>> [c,h]=contour(xi,yi,zi,step);<p></p></FONT></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">>> clabel(c,h)<p></p></FONT></P>
<P 0cm 0cm 0pt"><FONT face="Times New Roman">>> xlabel('x</FONT>坐标<FONT face="Times New Roman">');ylabel('y</FONT>坐标<FONT face="Times New Roman">')<p></p></FONT></P>

<P>是不是生成了tingrid就是生成dem了？大侠们指导一下哦</P>
<img src="images/post/smile/dvbbs/em02.gif" />

<P>大家</P>
<P><FONT style="BACKGROUND-COLOR: #cce8cf">up</FONT></P>