Builds the subplot CSS prefix from trace axis references.
Plotly renders each subplot inside <g class="subplot xy">. Axis names follow the pattern: x → x, x2 → x2, etc.
<g class="subplot xy">
x
x2
Optional
Builds the subplot CSS prefix from trace axis references.
Plotly renders each subplot inside
<g class="subplot xy">. Axis names follow the pattern:x→x,x2→x2, etc.