Use D3.min To Find Lowest Value That Is Not 0

I'm trying to use D3 to find the lowest value in my dataset. However, I also have values that are 0, but I want D3 to find the lowest value that is not 0. Currently I am using: d3

Solution 1:

You can use the constant Infinity, since Math.min(Infinity, someNumber) always return someNumber (unless someNumber is also infinity). So it'll look like this:

smallest = d3.min(data, function(d) {return d.houseValues || Infinity; })

If needed, you can check smallest == Infinity, which would be true in the case that all house values were 0.

Solution 2:

Try filtering the data to remove zeroes first, e.g.

var noZeroes = data.filter(function(d) { return d.houseValues !== 0; });
d3.min(noZeroes, function(d) {return d.houseValues; })