Setting nodes

One has to define the nodes $\ensuremath{\boldsymbol{x}}_j \in \ensuremath{\mathbb{T}}^d$ for the transformation in the member variable my_plan.x. The $t$ -th coordinate of the $j$ -th node $\ensuremath{\boldsymbol{x}}_j$ is assigned by

my_plan.x[d*j+t]= /* your choice in [-0.5,0.5] */;