plotting time discrete data

[leprechaun]

I will present some results of my work. Not nearly satisfactional....

I decided to make a polyline(M) function that accepts a 1-dimensional vector as argument. It should use LINE_P() for plotting a polyline. That sounds nice, but I have the Feeling that i am stuck.
For my general understanding: LINE_P accepts a Vector of Points, i.e. vectors with 2 entries for the 2-dimensional Problems and a Vector of indices into the above buffer that define line segments. Similar to a vbo I think?

Help or an example on LINE_P with Point lists would be great!

second problem: when trying to convert my 1-dim vector into a points array I fail.

Code:


EXPORT polyline(data)
BEGIN

LOCAL v_data := MAKEMAT(I,length(data),2);
v_data(2):=TRN(data); //How to assign? What should the Points Array look like?

//LOCAL l_data:={{1,2},{2,3},{3,4},{4,5},{5,6}}; //How can I build such a vector in Dependance of length(data)? And row/column? Which format

//Will deal with that later.......
//RECT();
//LINE_P(v_data,l_data);
//FREEZE;

RETURN v_data; //Output for debugging
END;

How can assign a column in v_data? I realize that I am totally confused with row- and column vectos AND I do not know the best way to manipulate either with my prime.

Thanks a lot for your help. It will lead to a working function, hopefully!