# Recent content by mads_st

1. ### Indefinite covariance matrix

Hi all. I have a situation regarding maximum likelihood estimation. As per usual i maximize the likelihood function, but the hessian comes out with one or two small negative eigenvalues. I know that in principle this means that i found a saddle point, but it seems that my estimates are...
2. ### [Matlab] - 3D plot Matlab

Hi - im trying to do a 3D plot in Matlab I have a user defined function of the form: [Number,~,...] = myfunc(parameter,arg2,...) The first output argument (Number) is a real number. Parameter is a vector in 2 dimensional space. Can someone tell me how to plot Number on the z - axis...