Passing an array to the Vertex shader

Hi, I've been searching the forums but have not found a concise and clear answer yet, but is there a way to pass an array to the vertex shader? I would like to write a custom shader that manipulates the vertices according to an array of vectors - so each vertex is modified differently form each other. From what I gather a sampler2D could be used with a width of 1 - but I'm not sure how to go about creating this via script.

Any help would be much appreciated!