Hello,

I know what happens when I play with the filter setting.
But do I really know what it exactly does.. no.

So I took the manual and tried to find out.. No luck in understanding, exactly..

So my question here, is there someone that can explain me what the values does in the filter settings? 
Could be a long or short discussion, but I hope someone has the patience, maybe some examples, to help me out!

Would be great! Thanks,

Javil

Load a sample filter and then change the points in it to see how they filter values in an image or procedural map.

For the filter to make more sense, you need a color map with a rainbow of colors in it.

A filter is also a curve when using smooth joints (bezier curves or splines), if you're familiar with the way curves work in Photoshop. If not, I'll try to explain:

When you use a function, a linear filter is applied to it.  Like the function, the filter goes from -1 to 1. At each point of the evaluated function, the corresponding filter point returs the exact same value, for example if  your function at 0.5 in X axis and 0.5 on Y axis returns, say 0.5 (this value is arbitrary, it doesn't mean anything without a context), with a linear filter, the value will remain 0.5, but if you add a filter point at this position and move it vertically from 0.5 to 1, the corresponding value of the function will be modified with the same magnitude, so the 0.5 value becomes 1, due to the filter.

As a filter is also a curve when using smooth joints, it can be used to smooth out an animation keyframe, and for example smooth out a jerky camera movement.

Hope this makes sense....!

This may help also : 

http://www.youtube.com/watch?v=xVTYU9E8Ug4

http://www.youtube.com/watch?v=Txljk71ve14

http://www.youtube.com/watch?v=EHa-IYn7o6M

Ah, ok. Thanks! 

That makes it a lot clearer to me! Thank you.

Also thanks for the videos!

Javil