Thanks for the responses to my previous question. I have a couple of queries regarding vectors and matrices.
1) Suppose I want a vector representing the pairwise product of two similar vectors. Is there a faster/more elegant way to return this product other than explicitly multiplying each element? That is, something better than this:
a=[1,2,3];b=[4,5,6];c=vector(#a,i,a[i]*b[i])
I need the solution to also work if the elements of one vector are also vectors:
a=[[1,2],[3,4]];b=[4,5];c=vector(#a,i,a[i]*b[i])
2) Suppose I have two vectors of inconsistent length. I want a third vector representing their sum, as if the shorter vector had been padded with zeros like so:
f(a,b)=my(k=#a-#b);c=vector(abs(k));if(k>0,b=concat([b,c]),a=concat([a,c]));return(a+b)
Is there a better/more elegant way to do this?
Thanks,
Joe Slater