radialBarAngle a band radius scale to draw one ring per browser, each over a full-turn track drawn by a second bar mark.radialGrid and angleGrid in the polar guides to draw circles and spokes behind the rings instead of a track.polar with a radialText mark to write each browser's name at the start of its ring.radialBarAngle with square ends over a thin radialArc ring, with the total written in the middle.cornerRadius on a single radialBarAngle for a rounded progress arc, with the total and its label centered in the ring.angle1 and angle2 to place each channel's segment end to end along a half ring, with the combined total in the middle.pie with a startAngle and endAngle three quarters of a turn apart to show the share of agreeing responses for the chosen question.radialArc bands with radialRule ticks and a needle, a radialDot hub and radialText to read one county's unemployment rate.