Skip to content

show the value of each bar on top of it. #556

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 2 commits into from
Closed

show the value of each bar on top of it. #556

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
c14a5a6
modify barchart:show the value of each bar on top of it
Jun 7, 2019
6573d32
modify barchart:show the value of each bar on top of it
Jun 7, 2019
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
13 changes: 13 additions & 0 deletions plotter/barchart.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ package plotter

import (
"errors"
"fmt"
"image/color"
"math"

Expand Down Expand Up @@ -120,6 +121,10 @@ func (b *BarChart) Plot(c draw.Canvas, plt *plot.Plot) {
valMin := trVal(bottom)
valMax := trVal(bottom + ht)

// value point
topx := catMin
topy := valMax

var pts []vg.Point
var poly []vg.Point
if !b.Horizontal {
Expand All @@ -138,6 +143,9 @@ func (b *BarChart) Plot(c draw.Canvas, plt *plot.Plot) {
{valMax, catMin},
}
poly = c.ClipPolygonX(pts)

topx = valMax
topy = catMin
}
c.FillPolygon(b.Color, poly)

Expand All @@ -150,6 +158,11 @@ func (b *BarChart) Plot(c draw.Canvas, plt *plot.Plot) {
outline = c.ClipLinesX(pts)
}
c.StrokeLines(b.LineStyle, outline...)
// show the value of each bar on top of it
strvalue := fmt.Sprintln(ht)
ft, _ := vg.MakeFont(plot.DefaultFont, 10)
c.FillText(draw.TextStyle{Color: color.Black, Font: ft}, vg.Point{X: topx, Y: topy}, strvalue)

}
}

Expand Down