Search found 807 matches

by admin
Fri Oct 18, 2024 2:17 pm
Forum: Installation
Topic: installing geopsy from source on Mac (15.0 Sequoia)
Replies: 1
Views: 6474

Re: installing geopsy from source on Mac (15.0 Sequoia)

Did you try to start the application through a terminal? It might output useful information.
by admin
Fri Sep 13, 2024 2:52 pm
Forum: Geopsy usage
Topic: Few questions for FK analysis
Replies: 6
Views: 6315

Re: Few questions for FK analysis

min and max velocities are used to define the grid search (translated into max and min wavenumbers). N maxima are effectively picked using the grid search. Upon saving the results, the min and max velocity are again checked. I'm unsure whether this second check is really useful. Close to the wavenum...
by admin
Fri Sep 13, 2024 2:33 pm
Forum: Geopsy usage
Topic: Geopsy damping
Replies: 1
Views: 3253

Re: Geopsy damping

Hi Leandro,

It looks like that the width of the cosine filter is too small. The damping effect always disappears if the width tends to 0 because the signal reduces to a sine or a cosine function. Try to enlarge a bit the bandwidth and check if the damping is increased.
by admin
Fri Sep 13, 2024 2:29 pm
Forum: Dinver usage
Topic: HVTFA - ellipticity inversions
Replies: 4
Views: 6959

Re: HVTFA - ellipticity inversions

If the number are coming from max2curve , you have to change the column headers. Values are not in degrees. You have to select 'Ellipticity (H/V)' for the mean values. For the error, I'm not so sure. It should be 'H/V stddev (approx)' or 'H/V*stddev (approx)'. Try both and compare with the plot of m...
by admin
Fri Aug 30, 2024 9:45 am
Forum: Geopsy usage
Topic: Few questions for FK analysis
Replies: 6
Views: 6315

Re: Few questions for FK analysis

Is it possible to obtain the value of F-K spectra (the beampower value in time window browser)?
No apparently there is no entry in the context menu to export the values. The code should be slightly modified
Now, all grid plots have an export value option in the context menu.
by admin
Fri Aug 30, 2024 9:39 am
Forum: General usage
Topic: Accessing directly grid values
Replies: 1
Views: 24338

Re: Accessing directly grid values

Now all grid plots have their 'Export values' menu (context menu).
by admin
Fri Aug 30, 2024 9:35 am
Forum: Installation
Topic: Installation of 3.5.0 on MacOS
Replies: 3
Views: 26609

Re: Installation of 3.5.0 on MacOS

With branch 3.6, the presence of these third party libraries are tested during the configuration. If not found, the code using these libraries is skipped during the compilation.
by admin
Fri Aug 30, 2024 9:24 am
Forum: Geopsy usage
Topic: Few questions for FK analysis
Replies: 6
Views: 6315

Re: Few questions for FK analysis

Hi Uki, I think that the strange movement from one peak to the other is linked to a bug in the display that I fixed at the beginning of July (unsure, vacations since then). If you are running under Linux, I would be curious to see the difference if you install the latest development through git repo...
by admin
Thu Aug 29, 2024 8:43 pm
Forum: Dinver usage
Topic: Doubts in parameterization
Replies: 1
Views: 3246

Re: Doubts in parameterization

Hi, When you link a layer from a profile to a layer of another profile, the bottom depth of the layer of the first profile is forced to be the same as the bottom depth of the second profile. No parameter for depth or thickness is added for the first profile. Usually layers from Vp and density are li...
by admin
Thu Aug 29, 2024 3:01 pm
Forum: Geopsy usage
Topic: split signal per hour
Replies: 2
Views: 3996

Re: split signal per hour

The documentation was not up-to-date. In fact, there are some functions available for justifying numbers. print(rightJustified(2. 4, "0")) results with '0002' I modified the documentation to list all function provided by geopsy on top of usual Javascript functions. In particular, several f...
by admin
Thu Aug 29, 2024 1:07 pm
Forum: Geopsy usage
Topic: Few questions for FK analysis
Replies: 6
Views: 6315

Re: Few questions for FK analysis

HI Uki, 1. Is it possible to obtain the value of F-K spectra (the beampower value in time window browser)? No apparently there is no entry in the context menu to export the values. The code should be slightly modified 2. What is the 'valid' inside the output max file stands for? It is a flag set to ...
by admin
Thu Aug 29, 2024 12:48 pm
Forum: Geopsy usage
Topic: [gphistogram] Exporting curve data in terms of phase velocity
Replies: 1
Views: 25272

Re: [gphistogram] Exporting curve data in terms of phase velocity

Slowness or velocity on a log scale are equivalent (it just reverts the axis). You can compute the statistics in slowness and convert them to velocity without loosing anything. For historical reasons, everything is done in slowness internally. Hence, I can see no reason to modify the input .max file...
by admin
Thu Aug 29, 2024 12:33 pm
Forum: Ambient vibration techniques
Topic: software criteria SESAME HVSR
Replies: 1
Views: 27287

Re: software criteria SESAME HVSR

I've heard of some applications or matlab scripts but I have no name in mind.
I think that Grilla software was proposing such criteria.
by admin
Thu Aug 29, 2024 12:31 pm
Forum: Dinver usage
Topic: max2curve in 3.5.2
Replies: 5
Views: 26498

Re: max2curve in 3.5.2

With gphistogram, any two column stream can be read. You just have to select the right columns with the command line options. gpviewmax is more "rigid", I guess it is not possible.
by admin
Thu Aug 29, 2024 12:26 pm
Forum: Dinver usage
Topic: HVTFA - ellipticity inversions
Replies: 4
Views: 6959

Re: HVTFA - ellipticity inversions

Hi Leandro, Numbers correspond to your numbered points. 1. The results of HVTFA depends upon the criteria used to selected events (max2curve -h TFA for a list of filters). One of the simplest filter is '-tfaNppm' (maximum number of peaks on the vertical component per minute and frequency). If you in...