Possible to hide zero-height bars in a bar chart?

Question

For values of 0, Flot likes to draw a flat line where the bar would be. Is it possible to configure it to draw nothing?

Answer 1

In my application I solved this issue by setting yaxis min to a value greater than 0 and less than the resolution I was working with. Borders visible, flat line hidden.

var options = {
series: {
    stack: 0,
    lines: { show: false, fill: true, steps: false },       
            bars: { show: true, barWidth: 0.6 } 
        },
    xaxis: {
        mode: "time",
        timeformat: "%H:%M"
    },
    yaxis: { 
        min: 0.5 
    },
    selection: { mode: "x" },
    grid: { hoverable: true }
};

Answer 2

You can set the value to null when it's zero and that will prevent it from showing and allow you to keep borders around other bars.