Search found 807 matches
- 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.
- 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...
- 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.
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.
- 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...
- 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
Now, all grid plots have an export value option in the context menu.No apparently there is no entry in the context menu to export the values. The code should be slightly modifiedIs it possible to obtain the value of F-K spectra (the beampower value in time window browser)?
- 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).
- 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.
- 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...
- 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...
- 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...
- 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 ...
- 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...
- 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.
I think that Grilla software was proposing such criteria.
- 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.
- 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...