As part of a larger project, I end up with convex expressions like ((x_0 + x_1)^2 + x_2^2:
from cvxpy import Variable, sum_squares, sum
target = Variable(3, nonneg=True, name='Target')
sum(target)
sum_squares(target)
combo = [sum([target[0], target[1]]), target[2]]
sum(combo)
sum_squares(combo)
sum(combo) works fine, but sum_squares(combo) throws the following error
ValueError: setting an array element with a sequence.
despite both atoms being scalar functions of with array inputs. Is there a better way to rewrite this?
sum_squares does not take array input. The input needs to be a single CVXPY Expression. Use vstack, hstack, or bmat to combine multiple Expressions into a single vector or matrix Expression.