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Ciao Marc, I do actually agree with you on all points. Linear arrays can only be used under strong assumptions that are hardly verified in reality. The best approach would certainly be using a 2D configuration of standalone stations, to avoid bias on apparent velocity estimation. On the other side, ...

Hi all,
what about including in the distribution a Matlab MEX interface to qtbwave functions, like the one in attachment (only very simple prototype)?
I think this will be quite useful, since a lot of people uses Matlab for testing purposes.

Ciao ciao

I propose the following modification for qtbwave.cpp and qtbwave.h, to include ellipticity calculation (and peak may be, see attachment). Regarding the calculation of ellipticity peaks, I notice that with some complex models and setting the precision (dispersion.setPrecision( 1e-15 );) the program c...

Hi Marc, I propose the following (or a similar) modification to the code in qtbwave.cpp, in order to avoid bad values in output. Ciao! MODIFIED CODE: ----------------------- for(int iMode = 0;iMode<*nModes;iMode++) { const QtbValue * mode = dispersion.mode( iMode ); for (int iSample = 0; iSample<*nS...

Hi Marc, just an idea: the header qtbwave.h can be modified the following way, to get compatibility with gcc using pure C calls. Additionally: do you also have a C wrapper for ellipticity calculation? I'm asking only because I don't want to reinvent the wheel ( :D ), otherwise I'll try to add it my ...

Thanks for the reply. Yes, I know this code could appear a little awful... :-) but this was the last of a long series of tests were I changed a lot of stuff, and the interface has been generally defined for testing purposes only (so, it is not optimized at all). Of course the Mex final interface wou...

Hi all, I'm trying to use the qtvwave library to build a simple mex C function to calculate Rayleigh wave ellipticity. As Marc suggested in another post, I started playing with the gpell code and after some copy, paste and modify, now the code is somehow running. However I get a segmentation fault i...

You are right! It seems that MATLAB is overwriting the LD_LIBRARY_PATH variable with its own settings. The output is indeed: >> system('ldd /home/grendel/programs/sesarray-bin-2.0.0-snapshot-20080103/bin/gpell'); linux-gate.so.1 => (0xffffe000) libqtbtools.so.1 => /home/grendel/programs/sesarray-bin...

This is the configuration I use: --------------------------------------------------------------------------------------------- SHELL OUTPUT ~$ qmake -v QMake version 2.01a Using Qt version 4.3.2 in /usr/lib ~$ echo $PATH /home/grendel/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:...

I'm trying to run gpell and gpdc under Matlab (as system call), but I encountered some problem. If I run this command: >> system('gpell --help'); or identically: >> !gpell --help I obtained always this error: gpell: symbol lookup error: /home/grendel/programs/sesarray-bin-2.0.0-snapshot-20080103/lib...