FWIW, I break the complex into real and imag using the casper block for that purpose, then go through gateway outs (with "translate into output port" off) then recombine the ral ans imag with a Simulink reim-to-complex block and then go into a "To Workspace" block. That way I don't have to do any manipulation on the matlab side of things.
Dave On Oct 3, 2013, at 1:48 PM, G Jones wrote: > I always just break out the real and imag parts before going to matlab > workspace > > On Oct 3, 2013 4:23 PM, "Ross Williamson" <[email protected]> > wrote: > Hi, > > I'm trying to implement a test suite for a correlator and I'm having > serious problems with my understanding of fi. The output of the fft > stage is UFIX 36_0. I capture that in a matlab variable (say > fft_out0). All I want to do is split that up into Re and Im parts at > FIX 18_17. I'm finding this rather difficult to do in matlab > (especially because simple bit operations such as & >> and > representing numbers via 0x notation do not work). > > If for example I try and convert the output from matlab > > fi(fft_out0,0,36,0) I still get a fractional number which baffles me. > > Is there a way to take this UFIX36_0, split into two FIX 18_17 and > turn it into a complex number? > > Ross > > p.s. I'm using the unbus blocks to create the simulink output. I don't > want to manually add gateways from every re_im block unless I really > have to. > > (p.p.s I'm coming from scipy where this would be trivial hence the > want to throw the toys out of the pram) > > -- > Ross Williamson > Research Scientist - Sub-mm Group > California Institute of Technology > 626-395-2647 (office) > 312-504-3051 (Cell) >
