Mike Bostock

Select a one- or two-dimensional region using the mouse or touch.

d3-brush

While brushing I get this error: 

Uncaught TypeError: Cannot read property 'type' of undefined
    at SVGGElement.brushed (observablehq-15:17)

Fixed, thank you! The error was happening on the programmatic brush.move

using this creates the following error in the console:
Uncaught RangeError: Maximum call stack size exceeded
    at l.emit (d3.min.js:2:65954)
    at l.start (d3.min.js:2:65703)
    at SVGGElement.<anonymous> (d3.min.js:2:65443)
    at Pn.each (d3.min.js:2:22650)
    at Go.c.move (d3.min.js:2:65266)
    at Pn.call (d3.min.js:2:22231)
    at SVGGElement.brushed (VM58 observablehq-15:30:21)
    at gt.call (d3.min.js:2:12616)
    at l.emit (d3.min.js:2:65930)
    at l.start (d3.min.js:2:65703)

Veli

since I have you here, do you know if it's feasible to have a brush that would start from the (X,Y) location of the initial mousedown, allow the Y-axis to be selected dynamically while snapping the X-axis to the maximum?