03708a90ef
* api cleaup * updates * wtf * updates * snapshot. * tweaks * snapshot * api tweaks. * updates * updates * updates * changes. * updates * updates * sequence => seq * dont need to use curl, just using wget * fixing examples
47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
package main
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import (
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"net/http"
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"github.com/wcharczuk/go-chart"
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"github.com/wcharczuk/go-chart/seq"
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"github.com/wcharczuk/go-chart/util"
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)
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func drawChart(res http.ResponseWriter, req *http.Request) {
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start := util.Date.Date(2016, 7, 01, util.Date.Eastern())
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end := util.Date.Date(2016, 07, 21, util.Date.Eastern())
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xv := seq.Time.MarketHours(start, end, util.NYSEOpen(), util.NYSEClose(), util.Date.IsNYSEHoliday)
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yv := seq.New(seq.NewRandom().WithLen(len(xv)).WithAverage(200).WithScale(10)).Array()
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graph := chart.Chart{
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XAxis: chart.XAxis{
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Style: chart.StyleShow(),
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TickPosition: chart.TickPositionBetweenTicks,
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ValueFormatter: chart.TimeHourValueFormatter,
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Range: &chart.MarketHoursRange{
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MarketOpen: util.NYSEOpen(),
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MarketClose: util.NYSEClose(),
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HolidayProvider: util.Date.IsNYSEHoliday,
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},
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},
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YAxis: chart.YAxis{
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Style: chart.StyleShow(),
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},
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Series: []chart.Series{
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chart.TimeSeries{
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XValues: xv,
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YValues: yv,
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},
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},
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}
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res.Header().Set("Content-Type", "image/png")
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graph.Render(chart.PNG, res)
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}
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func main() {
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http.HandleFunc("/", drawChart)
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http.ListenAndServe(":8080", nil)
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}
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