Ball-Stick Spatial Model

[jdrunner]

Good afternoon,

I had a question regarding the ball-stick option in Pore Analysis. I noticed the model assessed touching pores, as well as their representative equal diameter. We were curious if spatial distance between non-touching pores was also an option. We are wanting to get a planar spatial analysis of distance between pores to get a quantitative analysis of pore distribution in a 3D sense. If this is possible any information helps. Thank you.

[Anne Blumer]

Hello,

thank you for this question! Yes, the Pore-Network model (ball-stick model) output option in Identify Pores shows indeed the connected pores. Here is some more information from the user guide:

Pores are represented by spheres. The sphere centers are equal to the centers of the fit objects and their diameter equals the Equivalent Diameter (diameter of volume-equivalent sphere). The pore contacts are represented by short cylindrical fibers between the center points of the spheres. The cross-sectional area of the cylinders equals the contact area between the corresponding pores.

It has no option to do a similar model for unconnected pores. Do I understand correctly, that you would like to have a model that looks similar, but measures the distances only between unconnected pores by placing sticks between them? Maybe you can explain in more detail what exactly you want to do?

From my current understanding there are two more possibilities in GeoDict to do a distance analysis.

1. Use GeoDict Metrology (user guide) to directly measure distances in the GUI (only in 2D view mode):

2. Use the "Threshold By Scalar Value" Post-Processing option (user guide):
 

• Use the scalar value Coordination Number (numbers of contacts) and set the Manual Threshold to 0.5

• The pores are classified into two groups, one of them are the unconnected pores.
• You can load the classified pores from the result viewer as explained here
• You can then reassign the connected pores to the background ID and can do further analysis with the unconnected pores.

Maybe this is already helpful for you!
Best regards
Anne

[jdrunner]

Hello,

Yes, we are wanting a spatial analysis using sticks between unconnected pores. We would like to pair this with the volume distribution plot to gain an understanding of the pore size as well as the variation in dispersion of pores throughout the 3D dataset.

The measuring tool would be helpful when determining distance between two known pores, however, doing this for an entire dataset would become tedious. If there is a way to alter the Ball-Stick model to calculate the spatial distance between unconnected pores, that would be great. Thank you.

Respectfully,
Jack Davis