geopsy.org

Hi, There is no GUI way to change this color palette. Nonetheless, it is possible to edit these colors once the plot is exported as a .page file. The export of a signal view to a .page file is not working for all releases. Only the git repository provides this feature bug free. Just for fun, here ar...

Interesting. At first glance, it has not impact on SPAC processing.
It could be distinct orders of stations in the input. Even if the original files are the same, there is maybe a different sorting in both programs. I will check.

Use option '-n' to adjust the number of samples.
100 samples distributed on a log scale are generated between 4 and 50 Hz.

Hi Ilaria,
I've just tried with the latest code and I could not reproduce your bug.
Can you upload the exported parameter file?
Best regards,
Marc

Hi Leandro, figue reads time as a number of seconds since a reference time specified with option '-x-abs-time-ref'. Hence to plot your data the command line should be: cat Test.txt | gptime -i "yyyyMMddhhmmss" -o time_t -c 1 | figue -c -x-abs-time-ref 19700101000000 gptime is a tool provid...

Recent geopsy releases are not supporting Qt 5 any more. Prefer Qt 6 instead.

Hi, The average is computed on a log scale. This is maybe the difference with your results. Do you know that you can do the H/V computation with geopsy-hv ? It is a core application (without a graphical interface) that might be useful for large datasets. It does the same job as in the graphical inte...

Hi Sunxu, Effectively, you have the same issue with test.gpy . At first, I was not able to open test_modified.gpy with the ad hoc method: tar xvfz test_modified.gpy I tried with unzip and gunzip . After renaming the .gpy file, mv test_modified.gpy test_modified.gz gunzip test_modified.gz The obtaine...

Dear Ying-Chi, You can access the colour scale in the properties of the graph (double click or right-click, context menu, Properties). In the properties, under tab "Layers", you will find the colour scale that you can eventually edit. To show the plot with its colour scale for a paper figu...

Dear Farhan, Effectively, a 2D layout is better to capture ambient vibrations. With a line, you are never sure that the measured velocity is not an apparent velocity. Theoretically, for long recordings you can retrieve the true velocity if the wavefield is uniformly distributed. With 2D layouts, reg...

Hi, When running geopsy-hv , the parameters used for processing are listed in the terminal and in the .log file. In the log file there is also a list of the time windows. Check with the graphical interface for a particular case. Are the number of time windows the same with geopsy-hv and within the G...

Hi Laleh,

You can access these versions through the git repository. You have to install the build tools and to compile the whole package. It takes some time the first time. Afterwards, it is less time consuming.

What does f_peak mentioned in item 4 of the Criteria for a clear H/V peak in the SESAME Guide Line mean? Does it represent the peak of each window? Condition 4 means that a peak must be observed also on the deviation curves (A_{H/V} * and / sigma_A). This peak must be the same as f_0 +/= 5%. Also, ...

Hi Chenyu, I know that time has passed since you message. Do you still have the plot of H/V with non-log stderr? Are the errors larger with log stderr? Or the contrary? At first glance, the misfit can be larger if the uncertainties are smaller. I checked the code for importing H/V curves inside dinv...

Hi, I confirm IgnazioC's comments. A H/V station is supposed to have three components and located at the same coordinates (Receiver X and Y must be the same for all components). You can also modify these values with a script in menu Edit/Set header . For instance, in your particular case, you should...