scatter99The plot function will be faster for scatterplots where markers don't vary in size or color.. Any or all of x, y, s, and c may be masked arrays, in which case all masks will be combined and onlyScatter better. With Effect Layers. Effect Layers allow a new way of scattering. Like building up layers in Photoshop, you can now layer, mix and blend effects for Masking (Heht, Texture,