[OpendTect_Users] fault density along 2d line

[McInally, Alan]

Almost - you should do it recursively.  For each pass convert 011 to 001 and 110 to 100, if I am thinking straight then after a few passes 0111110 should convert to 0001000.

0111110
0011100
0001000


Hope that helps.

Regards,

Alan



-----Original Message-----
From: users-bounces at opendtect.org [mailto:users-bounces at opendtect.org] On Behalf Of mick
Sent: 20 March 2012 6:07
To: Laurent.Langhi at csiro.au; Users at opendtect.org
Subject: Re: [OpendTect_Users] fault density along 2d line


how about search for the pattern 11 and replace with 01 then add up the "1"s I'm sure someone can figure out how to program that.
How this works in 2D may be tricky if the fault runs parallel to a line.

Mick

---- Laurent.Langhi at csiro.au wrote:
Hi OD users,
here is a little problem I want to share with you.
I have to capture the fault density along a specific horizon, I am working with 2d seismic. So I have created a similarity attribute capturing the fault along the 2d line, I turned the similarity attribute into an attribute where for each trace "1" is the fault and "0 " is the non-fault.
So, along a specific horizon, this is an example of what I get: 3 faults, a narrow one, a average one and a wide one (from left to right) (there are 44 traces)
00000100000000001110000000000111111111100000

Initially to get a density of the fault along the horizon I thought to just count, along my horizon, the number of "1" that are with a certain range from a sample point (using Volume Statistics and output Sum). But you can see the issue here: if I use an increment of 5 traces on each side of the sample, for the wide fault (far right) I ll count ten "1" and for the narrow fault (far left) I ll count one "1". However the density of the fault is not higher on the right than on the left.
Therefore my idea is to turn each group of "1" between two "0" (ie a fault) into one "1" between two "0" like this:
The initial data <00000100000000001110000000000111111111100000> becomes <00000100000000000010000000000000000000100000>
Then every "1" is a fault and therefore if I count the "1" along my horizon, within a defined trace increment range, I should have a fault density.

Any idea how to turn that <00000100000000001110000000000111111111100000> into that <00000100000000000010000000000000000000100000> ?
Alternatively if you have another way to get the fault density along a 2d line I ll be interested.
Cheers
Laurent



Dr Laurent Langhi| Structural Geology - Exploration Geophysics | Petroleum and Geothermal Research  | CSIRO Earth Science and Resource Engineering | P +61 8 6436 8741 | F +61 8 6436 8555 | 26 Dick Perry Av, Kensington, WA 6151, AUSTRALIA | www.csiro.au/org/CESRE.html<http://www.csiro.au/org/CESRE.html>




_______________________________________________
Users mailing list
Users at opendtect.org
http://lists.opendtect.org/mailman/listinfo/users

You receive this mail because you are listed on users at opendtect.org To unsubscribe please go to http://lists.opendtect.org/mailman/options/users . If you encounter any problems, please contact support at opendtect.org .

This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to which they are addressed. If you have received this e-mail in error please notify the system manager at hotline at maerskoil.com.