Search found 135 matches

by luigiV
Fri Dec 02, 2022 1:59 pm
Forum: Geopsy usage
Topic: problem with Frequency domain window rejection (Cox et al. (2020, GJI)
Replies: 2
Views: 72

Re: problem with Frequency domain window rejection (Cox et al. (2020, GJI)

Hi victoriafc,
if you are interested in learning more about this utility and its setting go to the post viewtopic.php?t=535 where there is a concise but exhaustive explanation by Brady Cox following my question.
I hope it can be useful to you

Luigi
by luigiV
Fri Dec 02, 2022 10:12 am
Forum: Geopsy usage
Topic: Obtaining h/v ratios using earthquake records
Replies: 1
Views: 28

Re: Obtaining h/v ratios using earthquake records

Try to explore:

Wang, P. (2020). Predictability and repeatability of non-ergodic
site response for diverse geological conditions, PhD Thesis, UCLA, Dept. Civil Engineering, 210 p


where the values of SESAME criteria are updated mainly based on data from earthquakes.

Luigi
by luigiV
Thu Nov 17, 2022 2:38 pm
Forum: Geopsy usage
Topic: FK Tutorial, RTBF and Love dispersion
Replies: 0
Views: 25

FK Tutorial, RTBF and Love dispersion

Hi Marc, prompted by your clarifications in response to my question (https://www.geopsy.org/forum/viewtopic.php?t=553) I revisited the FK Tutorial where the outputs of the lep_ring01_3C.gpy processing with RTBF are reported. In addition to the scripts for Rayleigh, ellipticity and noise outputs, the...
by luigiV
Fri Nov 11, 2022 1:25 pm
Forum: Geopsy usage
Topic: Current status of SPAC functionality
Replies: 5
Views: 128

Re: Current status of SPAC functionality

Hi Marc, sorry for the delay, but I did not notice your reply. I don't know if I understand your request (I see the page file complete with all the plots) and therefore I am attaching the jpg where all the plots are included. I don't understand how this can happen. Maybe the jpg files cannot be save...
by luigiV
Tue Nov 08, 2022 6:22 pm
Forum: Geopsy usage
Topic: Gphistogram and RTBF
Replies: 2
Views: 66

Re: Gphistogram and RTBF

Hi Marc, I am a little confused by your reply. If I understood correctly, from the RTBF process, only a Rayleigh dispersion can be obtained and a Love dispersion can only be the output of a Capon transverse process (always if Love waves are present). This is in stark contrast to the documentation ht...
by luigiV
Fri Nov 04, 2022 11:13 am
Forum: Geopsy usage
Topic: Gphistogram and RTBF
Replies: 2
Views: 66

Gphistogram and RTBF

Hi Marc, why can't gphistogram represent the PDF of the Transverse of a target file obtained with FK RTBF, while gpviewmax can do it? Comparing with gpviewmax some target files I noticed that the transverse vel / freq plots show a dispersive trend very similar to that of the vertical, but aliasing i...
by luigiV
Sat Oct 29, 2022 4:34 pm
Forum: Geopsy usage
Topic: Current status of SPAC functionality
Replies: 5
Views: 128

Re: Current status of SPAC functionality

Hi, first of all thank you for giving me the opportunity to implement the little I know about the Spac 3C. So far I was stuck on the error message that appears when using spac2disp from the Geopsyland link. I tried to process with 3.4.2 a file of the tutorial database (lep_ring01_3C.gpy) with the po...
by luigiV
Fri Oct 28, 2022 2:00 pm
Forum: Geopsy usage
Topic: FK toolbox process type: Active process
Replies: 0
Views: 40

FK toolbox process type: Active process

Hi Marc, scrolling through the .max file of an FK process you will come across a comment zone where there is a list of the types of processes that are much more numerous than those that can be used by choosing from those listed in the FK toolbox. I suppose that these are processes that will be avail...
by luigiV
Thu Sep 29, 2022 2:38 pm
Forum: Geopsy usage
Topic: semi rings on the co-array map
Replies: 3
Views: 231

Re: semi rings on the co-array map

Hi Marc, Sorry if I expressed myself in an unclear way, but the question is much more practical: how to represent only the positive part in the plot of the co-arrays. Working on the Property editor I could not find a way to remove the negative part and in the end to get only semicircles instead of w...
by luigiV
Thu Sep 29, 2022 12:21 pm
Forum: Geopsy usage
Topic: semi rings on the co-array map
Replies: 3
Views: 231

semi rings on the co-array map

Hi Marc,
how do you represent on the co-array map only the positive part of the rings?

Thank you

Luigi
by luigiV
Thu Sep 22, 2022 11:58 am
Forum: Geopsy usage
Topic: save HV peak
Replies: 1
Views: 136

save HV peak

Hi Marc,
I found, wanting to save a f1 HV with the "save" function in peak editor, that an empty file is saved.
Is this a bug or is there another procedure to save the peaks f>0?
Thanks
Luigi
by luigiV
Wed Sep 14, 2022 12:24 pm
Forum: Geopsy usage
Topic: save HV curves
Replies: 0
Views: 142

save HV curves

Hi Marc,
is there a command that allows you to save the HV curves of all time windows? Yes or not?
Please, answer

Thanks
Luigi
by luigiV
Thu Sep 01, 2022 9:38 am
Forum: Geopsy usage
Topic: PSD spectrum
Replies: 1
Views: 224

PSD spectrum

Hi Marc,
is there the way to obtein the PSD spectrum as the time function with Geopsy?

Thanks
Luigi
by luigiV
Sat Aug 13, 2022 8:36 am
Forum: General usage
Topic: more on Frequency rejection utility (FWA)
Replies: 0
Views: 72

more on Frequency rejection utility (FWA)

Hi Marc, I wrote to Brady Cox who very kindly and quickly replied to me. This is the gist of his words: As you may recall from my 2020 paper, n is the number of standard deviations. So, when using n = 2 we are incorporating approximately 95% of the f0 values ​​obtained from the various time windows....
by luigiV
Tue Aug 09, 2022 8:05 pm
Forum: General usage
Topic: Frequency rejection
Replies: 2
Views: 513

Re: Frequency rejection

I wrote a few days ago (before to post here my question) to J.Ventassel, author of the hvsrpy code, but I haven't had an answer yet.


Geopsy use a log-normal distribution of MHVSR curves to determine statistics?