Hope somebody can help me out because I can't find any reference about this error.

I was working on this piece of code:

var xMin = d3.min(data, function(d) { return d.value; });

var xMax = d3.max(data, function(d) { return d.value; });



if (0 > xMin & 0 > xMax) {

  xMax = 0;

}



if (0 < xMin & 0 < xMax) { 

  xMin = 0;

}



x.domain(xMin, xMax).nice();

y.domain(data.map(function(d) { return d.label; }));

but I must have made some mistake cause now the loading blocks with the error message below in the web console:

TypeError: t.map is not a function @ http://d3js.org/d3.v3.min.js:2