Search found 528 matches

by admin
Mon Jan 18, 2021 11:04 am
Forum: Dinver usage
Topic: why different answers from same data using different Geopsy Dinver releases?
Replies: 11
Views: 304

Re: why different answers from same data using different Geopsy Dinver releases?

3.3.6 is available for Windows (and for source distribution of course - Linux and Mac).
by admin
Mon Jan 18, 2021 9:26 am
Forum: Dinver usage
Topic: why different answers from same data using different Geopsy Dinver releases?
Replies: 11
Views: 304

Re: why different answers from same data using different Geopsy Dinver releases?

Hi Luigi, I'm getting a minimum misfit of 0.39 after 30000 models with 3.4.0 and 3.3.6. I just add a new run to your .dinver and run it, without changing anything. From the dinver file alone I do not have access to the misfits you obtained. With 0.39 both dispersion and ellipticity are nicely adjust...
by admin
Mon Jan 18, 2021 8:29 am
Forum: Dinver usage
Topic: Changing the maximum (20) and minimum (0.2) frequency in the Dinver program
Replies: 2
Views: 21

Re: Changing the maximum (20) and minimum (0.2) frequency in the Dinver program

Hi, The frequency range in dinver is controlled only by the target curve you provide. If the target curve is from 0.5 to 50 Hz, dinver will compute the theoretical dispersion curve on the same range and will provide a misfit. You can resample or cut your curve inside dinver (see details ). Did I und...
by admin
Tue Jan 12, 2021 11:27 pm
Forum: Dinver usage
Topic: Negative rates during inversion
Replies: 3
Views: 83

Re: Negative rates during inversion

I fixed a bug on branch 3.4 today that made dinver running indefinitely without producing new models. That was a rather stupid mistake and the correction is now available on the git repository. You have a lot of models flagged as quarantined (or atomic for the latest release). These cells are not pr...
by admin
Tue Jan 12, 2021 10:50 pm
Forum: Dinver usage
Topic: why different answers from same data using different Geopsy Dinver releases?
Replies: 11
Views: 304

Re: why different answers from same data using different Geopsy Dinver releases?

Hi Luigi, It takes a little while but my answer won't be so short. Old release 2.5.0 First, I try with 2.5.0, an old one, even older than yours. Effectively the minimum misfit that I reach is around 0.8, lower than what you got with 3.3.4. But... if you look at the fit of the dispersion curve it is ...
by admin
Tue Jan 12, 2021 12:53 pm
Forum: Dinver usage
Topic: Negative rates during inversion
Replies: 3
Views: 83

Re: Negative rates during inversion

Hi Sebastian, Ns0=100000 is a huge number. With a minimum of 1 model the NA can start. Usually I start with 50 random models. From this initial population only the Nr (50 in your case) best models will be kept for the NA stage. With only 3 layers, you should have 7 parameters (plus or minus dependin...
by admin
Tue Jan 12, 2021 12:10 pm
Forum: Geopsy usage
Topic: Export Microtremor Results in Frequency domain
Replies: 6
Views: 182

Re: Export Microtremor Results in Frequency domain

If you want to change the units, you have to make sure that the input signal is effectively in m/s. Usually digitizers output only counts and the manufacturer provides the conversion factors to volts and m/s (for the sensor). If you enter these factors in CountPerVolt and VoltPerUnit fields of a tab...
by admin
Mon Jan 11, 2021 9:01 am
Forum: Geopsy usage
Topic: Export Microtremor Results in Frequency domain
Replies: 6
Views: 182

Re: Export Microtremor Results in Frequency domain

I just wanted to clarify- for the 'frequency (amplitude)' plot (under view) I assume this displays the 'real' component (i.e. the second column in the .txt file), whilst the 'frequency (phase)' plot displays the 'imaginary' component (i.e. the third column in the .txt file)? Frequency (amplitude) i...
by admin
Fri Jan 08, 2021 9:06 pm
Forum: Geopsy usage
Topic: Export Microtremor Results in Frequency domain
Replies: 6
Views: 182

Re: Export Microtremor Results in Frequency domain

Hi Luke,

If you go to "File/Export" menu, you can export as a multi-column text file. If the current state is frequency domain, you will get the raw FFT spectrum (real and imaginary part for each frequency), not the smoothed and processed like in HV tool.

Best regards,

Marc
by admin
Wed Jan 06, 2021 9:16 pm
Forum: Dinver usage
Topic: why different answers from same data using different Geopsy Dinver releases?
Replies: 11
Views: 304

Re: why different answers from same data using different Geopsy Dinver releases?

You can export the target or the parameterization separately into a .target or a .param file. In menu file, if you choose "save", it saves the complete environment (targets, parameters and the list of runs). It does not contain all the models generated in individual .report files. If you do not save...
by admin
Wed Jan 06, 2021 9:09 pm
Forum: Geopsy usage
Topic: gphistogram for plotting azimuth vs freq or slowness data from max file
Replies: 7
Views: 242

Re: gphistogram for plotting azimuth vs freq or slowness data from max file

Read version 3.3.5 instead branch 3.5. I'm developing branch 3.4 but branch 3.5 is not yet created. If you use -x-column and -y-column, effectively you have to adapt the index to the format. If you are using standard plotting ways (no argument, -azimuth,...), gphistogram recognizes the type of max f...
by admin
Tue Jan 05, 2021 3:17 pm
Forum: Geopsy usage
Topic: gphistogram for plotting azimuth vs freq or slowness data from max file
Replies: 7
Views: 242

Re: gphistogram for plotting azimuth vs freq or slowness data from max file

Hi Luigi,

I checked it successfully for the next 3.3.5 (and 3.4.0). There are probably minor modifications compared with 3.3.4 that are critical in this case. 3.3.5 will be probably available during next week. Waiting for you eventual return.

Marc
by admin
Mon Jan 04, 2021 4:41 pm
Forum: Geopsy usage
Topic: small numbers in SAF files
Replies: 1
Views: 3391

Re: small numbers in SAF files

Hi,

I've just checked with 3.3.4 and 3.4.0. The problem looks like fixed.

Best regards,

Marc
by admin
Mon Jan 04, 2021 3:09 pm
Forum: Dinver usage
Topic: why different answers from same data using different Geopsy Dinver releases?
Replies: 11
Views: 304

Re: why different answers from same data using different Geopsy Dinver releases?

Hi Luigi,

Can you post your .dinver file for inspection? It does not weight too much. I do not need the attached .report files.

Best regards,

Marc
by admin
Mon Jan 04, 2021 3:06 pm
Forum: Geopsy usage
Topic: gphistogram for plotting azimuth vs freq or slowness data from max file
Replies: 7
Views: 242

Re: gphistogram for plotting azimuth vs freq or slowness data from max file

Hi Luigi, If it were possible it would be very useful to update the documentation relating to these practical aspects for the user in Windows environment. There is a lot of things to do but time is missing. We should organize a sort of workshop like in 2010 to update the documentation. Azimuth can b...