xsizemode

Sets the shapes's sizing mode along the x axis. If set to "scaled", x0, x1 and x coordinates within path refer to data values on the x axis or a fraction of the plot area's width (xref set to "paper"). If set to "pixel", xanchor specifies the x position in terms of data or plot fraction but x0, x1 and x coordinates within path are pixels relative to xanchor. This way, the shape can have a fixed width while maintaining a position relative to data or plot fraction. Default: scaled.