Equivalent diameter definition problem!

[Fabien]

Dear all,

is it my limited math skills or the definition of the equivalent diameter is wrong in Avizo Fire 6.3?

From the measures selection, the equivalent spherical diameter is defined as:

(12 * Volume3D / PI() )^(1/3)

whereas in my humble opinion it should be:

(6 * Volume3D / PI() )^(1/3)

it can easily be checked when comparing the Volume3D value and the volume corresponding to the value of the equivalent diameter which differ by a factor of 2!

Is there an easy way to redefine the equivalent diameter???

Thanks for your help,


Fabien.

[mmarsh]

Hi Fabien,

Sorry for not replying sooner.

We recognize this error and will have it corrected for the next Avizo release.

So that you don't have to wait for the next patch or official release, you can add the correct measure manually. Just type paste this into the Avizo console:

create HxVisilog quant
quant exeCommand "cmd=createmeasure param= (6*Volume3d/3.14159)**(1/3) outmsr=EqDiameter2"
remove quant

After entering pasting the above text, you will have a new measurement called EqDiameter2. Use it in place of EqDiameter.

Cheers,
Mike