skip over anchor less axes:
skip over anchor less axes:

- in case some dummy axes were included in user layout.
  (e.g. someone layout = {xaxis: {}, scene: {xaxis: {}}} in
  a 3d-only graph.

aburato/plotly.js,plotly/plotly.js,iongroup/plotly.js,asolagmbh/plotly.js,plotly/plotly.js,etpinard/plotly.js,asolagmbh/plotly.js,iongroup/plotly.js,asolagmbh/plotly.js,plotly/plotly.js,iongroup/plotly.js,aburato/plotly.js,etpinard/plotly.js,etpinard/plotly.js,plotly/plotly.js