[Gwyddion-users] extract profile vs grain distributions

[Judy Phan]

Hi,
Which sets of data in the grain distributions tool that are corresponding
to the data when you use the extract profile tool? Obviously, the profile
you get when using the extract profile tool depends on each grain and where
on the grain you draw the line. I guess my question is that is there a way
I can export the maximum, minimum or average of those data (x and y)? Does
the grain distribution tool have a way to scan each grain for all of its
profiles and give you a max/min/average values? I know the distributions
give you many types of heights and widths but which one of those
corresponding to the profile extract tool x and y?
Thanks,

[David Nečas (Yeti)]

Post by Judy Phan
Which sets of data in the grain distributions tool that are corresponding
to the data when you use the extract profile tool?

Generally, none because...

Post by Judy Phan
Obviously, the profile
you get when using the extract profile tool depends on each grain and where
on the grain you draw the line.

...as you wrote, the grain quantities characterise the grain as the
entire two-dimensional object while you can take profiles anywhere.

Post by Judy Phan
I guess my question is that is there a way I can export the maximum,
minimum or average of those data (x and y)? Does the grain
distribution tool have a way to scan each grain for all of its
profiles and give you a max/min/average values? I know the
distributions give you many types of heights and widths but which one
of those corresponding to the profile extract tool x and y?

No, there is certainly no quantity defined as some statistical
characteristics of the set of all possible profiles (putting aside how
such set should be constructed).

Some quantities, such as maximum bounding dimension or mean radius, can
be interpreted as calculated over some *specific* set of profiles.

Regards,

Yeti