How can I set "Texture Format" in Inspector.I wanna use 32bit texture.

Hello.Sorry for my poor english.

http://www.cis.sojo-u.ac.jp/~izumi/Unity_Documentation_jp/Documentation/Images/manual/Textures-0.jpg
According to this image,we can choose Texture Format via Inspector.
But my current environment (4.2.1f4) doesn’t allow me to set up this parameter?
What shall I do? I wanna use 32bit texture!

And instead those ,I can write like below this is not smart.

Are you looking at some old documentation or something?

Choose a texture, click on it, the texture importer inspector will show, then change the dropdown to say advanced and then choose the format you want, then hit Apply.

Thank you sir! I found out the setting of texture importer.
And I have written sour code of asset importer but I don’t understand where to place this.
I wanted to add to MainCamera as cobut I couldn’t do that.

I placed MyAssetImporter under Editor direcotry when onPreprocessTexture() called assetImporter is null and unity did hang-up.
So meanwhile, I pass over to use MyAssetImporter.