Dear SC,

It is not clear to me what the physical meaning of the quantity is that you are asking for, but in principle ispossible to calculate it using OVITO's scripting capabilities. For example, you could insert the following

user-defined modifier function into the data pipeline to analyze the results of the DXA modifier:

`import numpy as np`

def modify(frame, input, output):

total_b = np.zeros(3)

for segment in input.dislocations.segments:

total_b += segment.spatial_burgers_vector

print(total_b)

This function simply computes the vector sum of the Burgers vectors of all spatial dislocations. Note however that this approach ignores the line sense of the dislocations, which may vary from line to line (as will the sign of the Burgers vector). So the Burgers vector summation doesn't make much sense, unless you know that all lines are pointing in the same direction.

-Alex