调用EMD程序怎么会出现如下错误

kevin19821

??? Undefined function or variable 'nspab'.
Error in ==> d:\MATLAB6p51\work\Untitled2.m
On line 26  ==> h = nspab(imf',500,0,500,dt);
??? Undefined function or variable 'instfreq'.
Error in ==> d:\MATLAB6p51\work\hhspectrum.m
On line 46  ==>   f(i,:)=instfreq(an(i,:)',tt,l)';
Error in ==> d:\MATLAB6p51\work\Untitled3.m
On line 11  ==> [A,f,tt]=hhspectrum(imf);
总是报这个nspab有错

zhlong

你的没有nspab这个函数