关于快捷菜单的 问题
<P ><FONT face="Times New Roman">x=0:pi/100:2*pi;</FONT></P><P ><FONT face="Times New Roman">y=2*exp(-0.5*x).*sin(2*pi*x);</FONT></P>
<P ><FONT face="Times New Roman">hl=plot(x,y);</FONT></P>
<P ><FONT face="Times New Roman">hc=uicontextmenu;<p></p></FONT></P>
<P ><FONT face="Times New Roman">hls=uimenu(hc,'Label','</FONT>线型<FONT face="Times New Roman">');<p></p></FONT></P>
<P ><FONT face="Times New Roman">hlw=uimenu(hc,'Label','</FONT>线宽<FONT face="Times New Roman">');<p></p></FONT></P>
<P ><FONT face="Times New Roman">uimenu(hls,'Label','</FONT>虚线<FONT face="Times New Roman">','Call','set(hl,''LineStyle'','':'');');<p></p></FONT></P>
<P ><FONT face="Times New Roman">uimenu(hls,'Label','</FONT>实线<FONT face="Times New Roman">','Call','set(hl,''LineStyle'',''-'');');<p></p></FONT></P>
<P ><FONT face="Times New Roman">uimenu(hlw,'Label','</FONT>加宽<FONT face="Times New Roman">','Call','set(hl,''LineWidth'',2);');<p></p></FONT></P>
<P ><FONT face="Times New Roman">uimenu(hlw,'Label','</FONT>变细<FONT face="Times New Roman">','Call','set(hl,''LineWidth'',0.5);');<p></p></FONT></P>
<P ><FONT face="Times New Roman">set(hl,'UIContextMenu',hc);<p></p></FONT></P>
<P >此程序中的快捷菜单可以改变曲线的线型和线宽<FONT face="Times New Roman">,</FONT>可是同样的快捷菜单程序<FONT face="Times New Roman">(</FONT>红色代码处<FONT face="Times New Roman">)</FONT>在下面的程序中却不能实现<FONT face="Times New Roman">,</FONT>谁能帮我指出是什么原因<FONT face="Times New Roman">?</FONT></P>
<P ><FONT face="Times New Roman">function y=dmachester(x)</FONT></P>
<P ><FONT face="Times New Roman">grid=100;</FONT></P>
<P ><FONT face="Times New Roman">t=0:1/grid:length(x); %</FONT>定义时间序列</P>
<P ><FONT face="Times New Roman">i=1; </FONT></P>
<P ><FONT face="Times New Roman">if(x(i)==1) %</FONT>前面的值不定，所以第一个值要单独给出</P>
<P ><FONT face="Times New Roman"> for j=1:grid/2 %</FONT>若第一个信息为<FONT face="Times New Roman">1</FONT></P>
<P ><FONT face="Times New Roman"> y(grid/2*(2*i-2)+j)=0; %</FONT>前半段时间为<FONT face="Times New Roman">0</FONT></P>
<P ><FONT face="Times New Roman"> y(grid/2*(2*i-1)+j)=1; %</FONT>后半段时间为<FONT face="Times New Roman">1</FONT></P>
<P ><FONT face="Times New Roman"> end</FONT></P>
<P ><FONT face="Times New Roman">else </FONT></P>
<P ><FONT face="Times New Roman"> for j=1:grid/2 %</FONT>若第一个信息为<FONT face="Times New Roman">0 </FONT></P>
<P ><FONT face="Times New Roman"> y(grid/2*(2*i-2)+j)=1; %</FONT>前半段时间为<FONT face="Times New Roman">1</FONT></P>
<P ><FONT face="Times New Roman"> y(grid/2*(2*i-1)+j)=0; %</FONT>后半段时间为<FONT face="Times New Roman">0</FONT></P>
<P ><FONT face="Times New Roman"> end </FONT></P>
<P ><FONT face="Times New Roman">end</FONT></P>
<P ><FONT face="Times New Roman">for i=2:length(x) %</FONT>从第二个信息起编码与前面的码元有关系</P>
<P ><FONT face="Times New Roman"> if(x(i)==1) %</FONT>若输入的信息为<FONT face="Times New Roman">1</FONT></P>
<P ><FONT face="Times New Roman"> for j=1:grid/2</FONT></P>
<P ><FONT face="Times New Roman"> y(grid/2*(2*i-2)+j)=1-y(grid/2*(2*i-3)+grid/4);%</FONT>前半段时间与前<st1:chmetcnv w:st="on" UnitName="码" SourceValue="1" HasSpace="False" Negative="False" NumberType="3" TCSC="1">一码</st1:chmetcnv>元后半段时间相反</P>
<P ><FONT face="Times New Roman"> y(grid/2*(2*i-1)+j)=1-y(grid/2*(2*i-2)+j); %</FONT>后半段时间与本码元前半段时间值相反</P>
<P ><FONT face="Times New Roman"> end</FONT></P>
<P ><FONT face="Times New Roman"> else %</FONT>若输入的信息为<FONT face="Times New Roman">0</FONT></P>
<P ><FONT face="Times New Roman"> for j=1:grid/2</FONT></P>
<P ><FONT face="Times New Roman"> y(grid/2*(2*i-2)+j)=y(grid/2*(2*i-3)+grid/4); %</FONT>前半段时间与前<st1:chmetcnv w:st="on" UnitName="码" SourceValue="1" HasSpace="False" Negative="False" NumberType="3" TCSC="1">一码</st1:chmetcnv>元后半段时间相同</P>
<P ><FONT face="Times New Roman"> y(grid/2*(2*i-1)+j)=1-y(grid/2*(2*i-2)+j); %</FONT>后半段时间与本码元前半段时间值相反</P>
<P ><FONT face="Times New Roman"> end</FONT></P>
<P ><FONT face="Times New Roman"> end</FONT></P>
<P ><FONT face="Times New Roman">end</FONT></P>
<P ><FONT face="Times New Roman">y=;</FONT></P>
<P ><FONT face="Times New Roman">M=max(y);</FONT></P>
<P ><FONT face="Times New Roman">m=min(y);</FONT></P>
<P ><FONT face="Times New Roman">axis();</FONT></P>
<P ><FONT face="Times New Roman">hl=plot(t,y);</FONT></P>
<P ><FONT face="Times New Roman">hc=uicontextmenu;<p></p></FONT></P>
<P ><FONT face="Times New Roman">hls=uimenu(hc,'Label','</FONT>线型<FONT face="Times New Roman">');<p></p></FONT></P>
<P ><FONT face="Times New Roman">hlw=uimenu(hc,'Label','</FONT>线宽<FONT face="Times New Roman">');<p></p></FONT></P>
<P ><FONT face="Times New Roman">uimenu(hls,'Label','</FONT>虚线<FONT face="Times New Roman">','Call','set(hl,''LineStyle'','':'');');<p></p></FONT></P>
<P ><FONT face="Times New Roman">uimenu(hls,'Label','</FONT>实线<FONT face="Times New Roman">','Call','set(hl,''LineStyle'',''-'');');<p></p></FONT></P>
<P ><FONT face="Times New Roman">uimenu(hlw,'Label','</FONT>加宽<FONT face="Times New Roman">','Call','set(hl,''LineWidth'',2);');<p></p></FONT></P>
<P ><FONT face="Times New Roman">uimenu(hlw,'Label','</FONT>变细<FONT face="Times New Roman">','Call','set(hl,''LineWidth'',0.5);');<p></p></FONT></P>
<P ><FONT face="Times New Roman">set(hl,'UIContextMenu',hc);<p></p></FONT></P> <P>哪位给指点一下迷津</P>
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