After 15 year in high performance computing and computational biology, I joined OCTO Technology, a blasting consulting firm in Lausanne (www.octo.ch).
timetableSample = loadTimetable(
'https://raw.githubusercontent.com/alexmasselot/swiss-transport-data/master/data/dt-timetable-sample.tsv'
)
chartSample = svgSample.node()
{
let x = scales(timetableSample).time2x
let y = scales(timetableSample).distance2y
svgSample.selectAll('circle.stop')
.data(timetableSample)
.enter()
.append('circle')
.classed('stop',true)
.attr('cx', (tt) => x(tt.next_h_arrival_time))
.attr('cy', (tt) => y(tt.next_trip_distance))
.attr('r', 5)
}
addAxes = (svg, scales) => {
svg.selectAll('g.axis').remove()
// x axis for time
svg.append("g")
.classed('axis', true)
.attr("transform", 'translate(0, ' + (dimensions.overall.height - dimensions.margins.bottom) + ')')
.call(d3.axisBottom(scales.time2x)
.tickFormat((v) => {
// format tim ein minutes into a readable form (8h, 8:05, 8:40)
let m = v%60;
let h = Math.floor(v/60);
if(m === 0){
return h+'h';
}else{
return h+':'+d3.format('02')(m);
}
})
);
//y axis (distance), where labels actually are the city names
svg.append("g")
.classed('axis', true)
.attr("transform", 'translate(' + dimensions.margins.left + ', 0)')
.call(d3.axisLeft(scales.distance2y)
.tickValues(_.map(uniqueStations, 'tripDistance'))
.tickFormat((undefined, i) => uniqueStations[i].stationName)
)
return 'Adding axis ticks and labels'
}
{
//jsut define x & y as shortcut to the scaling function, in order to have shorter syntax below
let x = scales(timetableSample).time2x
let y = scales(timetableSample).distance2y
svgSample.selectAll('path.segment').remove()
svgSample.selectAll('path.segment')
.data(timetableSample)
.enter()
.append('path')
.classed('segment',true)
.attr('d', (tt) =>
'M' + x(tt.h_departure_time) + ', ' + y(tt.trip_distance) +
' L' + x(tt.next_h_arrival_time) + ', ' + y(tt.next_trip_distance)
)
.style('stroke', 'blue')
return 'Adding segments between stations'
}
timetableFiltered = _.chain(timetable)
.filter((r) => r.h_departure_time > 6*60 && r.next_h_arrival_time < 11*60)
.filter((r) => r.trip_description === selectedDirection)
.filter((r) => r.day_type === selectedDayType)
.sortBy('frequency')
.value()
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