Adjusting precise zoom levels with d3.js?

I have a bar graph in d3, and we need to incorporate specific zoom increments, inspired by Google maps. I am looking for the mouse wheel zoom feature to smoothly transition to the next zoom level when scrolling in or out.

My current setup for the zoom functionality mirrors that of others:

        self.plot.call(d3.behavior.zoom().x(self.x).y(self.y).on("zoom", self.redraw()));

However, I lack sufficient knowledge about d3 (and time is running short) to figure out how to configure this. Any advice or assistance would be greatly appreciated?

javascriptmapsd3.jszoominggraphing

Answer №1

If you want to customize your zoom event listener and adjust the scale according to your preferences (such as rounding to the nearest whole number), there is a helpful blog post that provides more information here.

Although it requires more effort than simply applying the zoom behavior to an axis, d3 does not have built-in features to limit the zoom levels by default.

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