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I'm really loving Octane. I'm still a newbie though so I hope I ask this question right. Is there a way to select multiple materials so they can all be changed at the same time? For example, everything (or nearly everything) is set to Glossy in the material tab. Other than characters, I often find that I want to change the materials for almost all other items to Diffuse. Last night I had a scene where I needed to change about 100+ material items, one by one, all to Diffuse. Is there a way to choose multiple items and within the materials tab and change them all at the same time? Or is there something really basic I'm missing maybe?

The OctaneDefaulty.py contains lots of things to explore, just like:

"...
# Material conversion defaults
GLOSSY_DIFFUSE_RATIO = 0.2 # If total Specular_Color * Specular_Value * GLOSSY_DIFFUSE_RATIO is greater than total diffuse color * value, then make the node glossy, otherwise diffuse
# Set the above to 0 to force all materials to be glossy (and not diffuse).
# NOTE: If Alternate_Specular is "brighter" than Specular_Color * Specular_Value, it will be used in the above calculation instead.
..."

Same for Specular and lots of other things.
IMO it's worth to have a look at this file and do some personal adjustments, but be careful and have a backup ... just in case

It can be found at: ... Runtime/Python/addons/OctaneRender for Poser

Thanks Erick, I'll give that a try and see what happens.

I'm really loving Octane. I'm still a newbie though so I hope I ask this question right. Is there a way to select multiple materials so they can all be changed at the same time?

You cannot multiselect at the moment, but it's something I plan to investigate in the future.

For example, everything (or nearly everything) is set to Glossy in the material tab. Other than characters, I often find that I want to change the materials for almost all other items to Diffuse. Last night I had a scene where I needed to change about 100+ material items, one by one, all to Diffuse. Is there a way to choose multiple items and within the materials tab and change them all at the same time?

As Erick says, this can be done in the OctaneDefaults.py file. IMO, you are better leaving them as glossy and reduce the specular amount then to convert to diffuse.

GLOSSY_DIFFUSE_RATIO & GLOSSY_SPECULAR will be of interest to you. Restart Poser after changing the OctaneDefaults.py file.

Paul

Thank you Paul, I tried both methods and they worked. I'll use your method as you recommend it. Appreciate the help