Randomness in micrstrucutre

[jackson911007]

Hello,

I have a quick question regarding to the generated mesh structure. I used the bellow code to generate a 2D structure and it works. However, the data (microstructure) I generate for each time is always the same. Is there a way to generate same distribution but different microstructure each time (That means including randomness)?

Thanks,

Dung-Yi

[Code]

# Create Materials
material = {
    'name': 'Matrix',
    'material_type': 'matrix',
    'fraction': 1,
    'shape': 'Circle',
    'size': 
    scipy.stats.lognorm(s=shape, loc=loc, scale=scale)
}


# Create Domain
domain = msp.geometry.Square(side_length=length_of_side, corner=(0, 0))

# Create List of Un-Positioned Seeds
seed_area = domain.area
rng_seeds = {'size': 0}
seeds = msp.seeding.SeedList.from_info(material,
                                       seed_area,
                                       rng_seeds)

[kip-hart]

Hi @jackson911007 do you vary the integer in rng_seeds['size'] and it still outputs the same microstructure?

[jackson911007]

Hi Kip-hart. I think I got it by changing the rng_seeds. Thanks for your help Best

…

On Tue, Dec 12, 2023 at 1:59 PM Kip Hart ***@***.***> wrote: Hi @jackson911007 <https://github.com/jackson911007> do you vary the integer in rng_seeds['size'] and it still outputs the same microstructure? — Reply to this email directly, view it on GitHub <#94 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AOBJR73RA3SWA3WMYLL6XO3YJCSRPAVCNFSM6AAAAABAM26W26VHI2DSMVQWIX3LMV43SRDJONRXK43TNFXW4Q3PNVWWK3TUHM3TQMZUGM3DS> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[kip-hart]

Another thing to try is adding an rng seed to the position method. https://docs.microstructpy.org/en/latest/api/seeding/seedlist.html#microstructpy.seeding.SeedList.position

[jackson911007]

Thanks for the tip!

…

On Tue, Dec 12, 2023 at 2:37 PM Kip Hart ***@***.***> wrote: Another thing to try is adding an rng seed to the position method. https://docs.microstructpy.org/en/latest/api/seeding/seedlist.html#microstructpy.seeding.SeedList.position — Reply to this email directly, view it on GitHub <#94 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AOBJR74FW6QSBIXWPMDY543YJCW7HAVCNFSM6AAAAABAM26W26VHI2DSMVQWIX3LMV43SRDJONRXK43TNFXW4Q3PNVWWK3TUHM3TQMZUGY4DQ> . You are receiving this because you were mentioned.Message ID: ***@***.***>