MATLAB 5.0 MAT-file, Platform: PCWIN, Created on: Mon Aug 28 14:49:54 2000 IM0@mat0 °?À?È?Ð?Ô?Ø?Ü?à?â?ä?æ?è?ê?ì?î?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?î?ì?ê?è?æ?ä?â?°?À?È?Ð?Ô?Ø?Ü?à?â?ä?æ?è?ê?ì?î?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?î?ì?ê?è?æ?ä?â?à?Ü?Ø?Ô?Ð?È?À?°?â?ä?æ?è?ê?ì?î?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?ð?î?ì?ê?è?æ?ä?â?à?Ü?Ø?Ô?Ð?È?À?°?0mat1 øÿøÿøÿøÿøÿøÿøÿøÿøÿøÿøÿøÿøÿøÿøÿøÿøÿøÿøÿøÿøÿ@@@@@øÿøÿøÿøÿøÿøÿøÿøÿøÿð?@@@ð?@@@@øÿøÿøÿøÿøÿøÿð?@@@ð?ð?ð?@@@@øÿøÿøÿøÿ@ð?@@@ð?ð?ð?ð?@@@@øÿøÿøÿ@ð?ð?@@ð?ð?ð?ð?@@@@øÿøÿ@@ð?@@@ð?ð?ð?ð?@@@@@øÿ@@@@@@ð?ð?ð?ð?ð?ð?ð?@@øÿ@@@@@@ð?ð?ð?@@@@ð?@øÿ@@ð?@@@ð?ð?ð?ð?ð?ð?ð?ð?@øÿ@@ð?@@@ð?ð?ð?@@@@ð?@øÿøÿ@ð?ð?@@ð?ð?ð?ð?ð?ð?ð?@øÿøÿøÿ@ð?@@@ð?ð?ð?ð?@@@@øÿøÿøÿøÿ@ð?@@ð?ð?ð?@@@@øÿøÿøÿøÿøÿøÿ@@@@ð?@@@@øÿøÿøÿøÿøÿøÿøÿøÿøÿ@@@@@øÿøÿøÿøÿøÿøÿèÜmat2¸delete(findobj('Tag','contour'));delete(findobj('Tag','contourlabel'));function = get(findobj('Tag','functioncongrad'),'String');xmin=eval(get(findobj('Tag','xmincongrad'),'String'));xmax=eval(get(findobj('Tag','xmaxcongrad'),'String'));ymin=eval(get(findobj('Tag','ymincongrad'),'String'));ymax=eval(get(findobj('Tag','ymaxcongrad'),'String'));xscl=(xmax-xmin)/100;yscl=(ymax-ymin)/100;[x,y]=meshgrid(xmin:xscl:xmax,ymin:yscl:ymax);z=eval(strcat(vectorize(function)));z=z+zeros(size(x));if get(findobj('Tag','congradbutton'),'Value')==1,hold on;axis([xmin xmax ymin ymax]),[c,h]=contour(x,y,z,10);j=clabel(c,h);set(h,'Tag','contour');set(j,'Tag','contourlabel');hold off;else,hold on;zmin=eval(get(findobj('Tag','zmincongrad'),'String'));zmax=eval(get(findobj('Tag','zmaxcongrad'),'String'));zscl=eval(get(findobj('Tag','zsclcongrad'),'String'));axis([xmin xmax ymin ymax]);[c,h]=contour(x,y,z,zmin:zscl:zmax);j=clabel(c,h);set(h,'Tag','contour');set(j,'Tag','contourlabel');hold off;endÈJmat3”delete(findobj('Tag','grad'));function = get(findobj('Tag','functioncongrad'),'String');xmin=eval(get(findobj('Tag','xmincongrad'),'String'));xmax=eval(get(findobj('Tag','xmaxcongrad'),'String'));ymin=eval(get(findobj('Tag','ymincongrad'),'String'));ymax=eval(get(findobj('Tag','ymaxcongrad'),'String'));xtick=(xmax-xmin)/10;ytick=(ymax-ymin)/10;[x,y]=meshgrid(xmin:xtick:xmax,ymin:ytick:ymax);U=eval(vectorize(diff(function,'x')))+zeros(size(x));V=eval(vectorize(diff(function,'y')))+zeros(size(x));hold on;axis([xmin xmax ymin ymax]);a=quiver(x,y,U,V,.5);set(a,'Tag','grad');hold off;Ømat4 ¨ð?è?è?Ð?à?è?è?Ð?ð?è?è?Ð?Pmat5 ˆ*u× °?æÃ·&çP¼?颋.ºèâ?ãÁö/·é?