https://www.geopsy.org/wiki/index.php?action=history&feed=atom&title=Importance_sampling 2026-04-22T16:20:29Z Revision history for this page on the wiki MediaWiki 1.34.1 https://www.geopsy.org/wiki/index.php?title=Importance_sampling&diff=298&oldid=prev 2009-06-22T17:43:06Z

<p>New page: This is an example based on the surface wave plugin. It can be run with any other inversion plugin. * Generate .report files as usual (command line or graphical user interface) * Run din...</p> <p><b>New page</b></p><div>This is an example based on the surface wave plugin. It can be run with any other inversion plugin.<br /> <br /> <br /> * Generate .report files as usual (command line or graphical user interface)<br /> * Run dinver with importance sampling mode (only command line), list several reports if needed.<br /> <br /> dinver -i DispersionCurve -importance-sampling inversion.report -ns 10000 -o 3_layers.report -param 3_layers.param<br /> <br /> You can use &#039;&#039;-resume to start&#039;&#039; this command several times appendingmodels to the same .report.<br /> <br /> <br /> * Plot the profile densities:<br /> <br /> gpdcreport 3_layers.report | gpprofile -vs -resample -d 4000 -n 40 | grep -v &quot;#&quot; | awk &#039;{print $2,$1}&#039; |<br /> gphistogram -y-min 150 -y-max 3500 -y-sampling log -x-min 0 -x-max 4000 -x-count 41<br /> <br /> If you have some artifacts on the plot (some depths appear with a much stronger density), adjust the &#039;&#039;-x-count&#039;&#039; to one more unit compared to the number of sub-depths (40 and 41 in this case). Vs is plotted down to 4 km with a step of 100 m in this case.</div>

Marc