//implement part2, after all improvements
func part2_bars(width int64, barHeight int64) {
x := d3.ScaleLinear().Range([]int64{0, width})
chart := d3.Select(pickChart2).Attr(propWidth, width)
//read sample data from the server
d3.TSV("sample.tsv", filterIntData, func(err js.Object, data js.Object) {
if !err.IsNull() {
console.Error(err)
return
}
x.Domain([]int64{0, d3.Max(data, extractValue)})
chart.Attr(propHeight, barHeight*int64(data.Length()))
bar := chart.SelectAll(pickG).Data(data).Enter().Append(gTag)
bar.AttrFunc2S(propXform, func(d js.Object, i int64) string {
return fmt.Sprintf("translate(0,%d)", i*barHeight)
})
rect := bar.Append(rectTag)
rect.AttrFunc(propWidth, x.Func(extractValue)).Attr(propHeight, barHeight-1)
text := bar.Append(textTag)
text.AttrFunc(propX, func(d js.Object) int64 {
return x.Linear(d, extractValue) - int64(3)
})
text.Attr(propY, barHeight/2).AttrS(propDy, ".35em")
text.Text(func(d js.Object) string {
return fmt.Sprintf("%s:%d", d.Get("name"), extractValue(d))
})
})
}
func part3_bars(overall_width, overall_height, top, right, bottom, left int64) {
width := overall_width - left - right
height := overall_height - top - bottom
x := d3.ScaleOrdinal().RangeBands3([]int64{0, width}, 0.1)
y := d3.ScaleLinear().Range([]int64{height, 0})
xAxis := d3.NewAxis().ScaleO(x).Orient(d3.BOTTOM)
yAxis := d3.NewAxis().Scale(y).Orient(d3.LEFT).Ticks(10, "%")
chart := d3.Select(pickChart3).Attr(propWidth, width+left+right).
Attr(propHeight, height+top+bottom).Append(gTag).
AttrS(propXform, fmt.Sprintf("translate(%d,%d)", left, top))
d3.TSV("letter_freq.tsv", filterFloatData, func(err js.Object, data js.Object) {
if !err.IsNull() {
console.Error(err)
return
}
x.Domain(extractAllLetters(data))
y.DomainF([]float64{0.0, d3.MaxF(data, extractFreq)})
//AXES
chart.Append(gTag).AttrS(propClass, "x axis").AttrS("transform",
fmt.Sprintf("translate(0,%d)", height)).Call(xAxis)
yText := chart.Append(gTag).AttrS(propClass, "y axis").Call(yAxis).Append(textTag)
yText.AttrS(propXform, "rotate(-90)").Attr(propY, 6).
AttrS(propDy, "0.71em").StyleS(propTextAnchor, "end").TextS("Frequency")
//BAR
rect := chart.SelectAll(pickBar).Data(data).Enter().Append(rectTag)
rect.AttrS(propClass, "bar")
rect.AttrFunc(propX, func(d js.Object) int64 {
return x.Ordinal(d, extractLetter)
})
rect.AttrFuncF(propY, func(d js.Object) float64 {
return y.LinearF(d, extractFreq)
})
rect.AttrFuncF(propHeight, func(obj js.Object) float64 {
return float64(height) - y.LinearF(obj, extractFreq)
})
rect.AttrF(propWidth, x.RangeBandF())
})
}