+ if (axis == "y1") { axis = "y"; } // Standardize on 'y'. Is this bad? I think so.
+ if (axis == "y") {
+ axisIdx = 0;
+ } else if (axis == "y2") {
+ axisIdx = 1;
+ } else if (axis == "x") {
+ axisIdx = -1; // simply a placeholder for below.
+ } else {
+ throw "Unknown axis " + axis;
+ }
+ axisString = axis;