AA Timeline

<timeline> ImageSize = width:160 height:550 PlotArea = width:50 height:530 left:50 bottom:10

DateFormat = yyyy Period = from:1919 till:1991 TimeAxis = orientation:vertical ScaleMajor = unit:year increment:5 start:1920

1. there is no automatic collision detection,
2. so shift texts up or down manually to avoid overlap

Define $dx = 25 # shift text to right side of bar

PlotData=

 bar:Leaders color:red width:25 mark:(line,white) align:left fontsize:S

 from:start till:1922 shift:($dx,15)   text:Vladimir~Ilyich~Lenin
 from:1922  till:1953 shift:($dx,5)    text:Josef Stalin
 from:1953  till:1964 shift:($dx,5)    text:Nikita~Khrushchev
 from:1964  till:1982 shift:($dx,5)    text:Leonid~Brezhnev
 from:1982  till:1984 shift:($dx,-12)  text:Yuri~Andropov
 from:1984  till:1985 shift:($dx,4)    text:Konstantin~Chernenko fontsize:XS
 from:1985  till:end  shift:($dx,10)   text:Mikhail~Gorbachev

</timeline>

<timeline> ImageSize = width:800 height:100 PlotArea = width:720 height:75 left:65 bottom:20 AlignBars = justify

Colors =

 id:epoch  value:rgb(0.7,0.7,1) # light yellow
 id:period value:rgb(1,0.7,0.7) # light red
 id:age    value:rgb(0.7,1,0.7) # light green
 id:era    value:rgb(1,1,0.7)   # light blue
 id:eon    value:rgb(1,0.7,1)   # light purple
 id:black  value:black

Period = from:-4500 till:0 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:500 start:-4500 ScaleMinor = unit:year increment:100 start:-4500

Define $markred = text:"*" textcolor:red shift:(0,3) fontsize:10

PlotData=

 align:center textcolor:black fontsize:8 mark:(line,black) width:25 shift:(0,-5)

 bar:eon color:eon

 at:      0   align:right  $markred
 at:   -545   align:left   $markred
 from: -545   till:    0   text:Phanerozoic
 from:-4500   till:    0   text:Precambrian

 bar:era color:era

 from:  -64.3 till:    0   text:C~z shift:(0,1.5)
 from: -251.1 till:  -64.3 text:Meso~zoic shift:(0,1.5)
 from: -545   till: -251.1 text:Paleo~zoic shift:(0,1.5)
 from:-4500   till: -545   text:Proterozoic

 bar:period color:period

 fontsize:6
 from:   -1.6 till:    0
 from:  -64.3 till:   -1.6
 from: -146   till:  -64.3
 from: -208   till: -146
 from: -251.1 till: -208
 from: -286   till: -251.1
 from: -360   till: -286
 from: -408.5 till: -360
 from: -443.5 till: -408.5
 from: -490   till: -443.5
 from: -545   till: -490

 fontsize:8
 from: -900   till:  -545  text:Neoprote-~rozoic shift:(0,1.8)
 from:-1600   till:  -900  text:Mesoproterozoic
 from:-2500   till: -1600  text:Paleoproterozoic
 from:-3800   till: -2500  text:Archaean
 from: start  till: -3800  text:Hadean

</timeline>

<timeline> ImageSize = width:800 height:120 PlotArea = width:720 height:95 left:65 bottom:20 AlignBars = justify

Colors =

   id:epoch  value:rgb(0.7,0.7,1) # light yellow
   id:period value:rgb(1,0.7,0.7) # light red
   id:age    value:rgb(0.7,1,0.7) # light green
   id:era    value:rgb(1,1,0.7)   # light blue
   id:eon    value:rgb(1,0.7,1)   # light purple
   id:filler value:gray(0.8)      # background bar
   id:black  value:black

Period = from:-545 till:0 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:100 start:-500 ScaleMinor = unit:year increment:10 start:-540

Define $markred = text:"*" textcolor:red shift:(0,3) fontsize:10 Define $markgreen = text:"*" textcolor:green shift:(0,3) fontsize:10

PlotData=

 align:center textcolor:black fontsize:8 mark:(line,black) width:25 shift:(0,-5)

 bar:eon color:eon
 at:      0   align:right  $markred
 at:   -545   align:left   $markred
 from: -545   till:    0   text:Phanerozoic
 bar:era color:era
 at:      0   align:right  $markgreen
 at:    -64.3 align:left   $markgreen
 from:  -64.3 till:    0   text:Cenozoic
 from: -251.1 till:  -64.3 text:Mesozoic
 from: -545   till: -251.1 text:Paleozoic

 bar:period color:period fontsize:8
 from:   -1.6 till:    0
 from:  -64.3 till:   -1.6 text:Tertiary
 from: -146   till:  -64.3 text:Cretaceous
 from: -208   till: -146   text:Jurassic
 from: -251.1 till: -208   text:Triassic
 from: -286   till: -251.1 text:Permian
 from: -360   till: -286   text:Carboniferous
 from: -408.5 till: -360   text:Devonian
 from: -443.5 till: -408.5 text:Silurian
 from: -490   till: -443.5 text:Ordovician
 from: -545   till: -490   text:Cambrian

 bar:age color:age fontsize:6
 from: start  till:  end
 from: -23    till:  -1.6  text:Neo-~gene             shift:(0,0.5)
 from: -64.3  till: -23    text:Paleo~gene          shift:(0,0.5)
 from: -286   till: -251.1 # mark end of Paleozoic
 from: -325   till:  -286  text:Pennsyl-~vanian shift:(0,0.5)
 from: -360   till:  -325  text:Missis-~sippian shift:(0,0.5)

</timeline>

<timeline> ImageSize = width:800 height:120 PlotArea = width:720 height:95 left:65 bottom:20 AlignBars = justify

Colors =

 id:epoch  value:rgb(0.7,0.7,1) # light yellow
 id:period value:rgb(1,0.7,0.7) # light red
 id:age    value:rgb(0.7,1,0.7) # light green
 id:era    value:rgb(1,1,0.7)   # light blue
 id:black  value:black

Period = from:-65.5 till:0 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:10 start:-60 ScaleMinor = unit:year increment:1 start:-65

Define $markgreen = text:"*" textcolor:green shift:(0,3) fontsize:10

PlotData=

 align:center textcolor:black fontsize:8 mark:(line,black) width:25 shift:(0,-5)

 bar:era color:era
 at:     0  align:right $markgreen
 at: start  align:left  $markgreen
 from:start  till:  0    text:Cenozoic

 bar:period color:period
 from: -1.6  till:  0    text:Qua~ter~nary fontsize:6 align:left shift:(-7,5)
 from:start  till: -1.6  text:Tertiary

 bar:age color:age
 from: -1.6  till:  0
 from: -23   till:  -1.6 text:Neogene
 from:start  till: -23   text:Paleogene

 bar:epoch color:epoch
 from: -0.1  till:  0
 from: -1.6  till: -0.1  text:P
 from: -5    till: -1.6  text:Plio~cene shift:(0,1) fontsize:6
 from:-23    till: -5    text:Miocene
 from:-38    till:-23    text:Oligocene
 from:-55    till:-38    text:Eocene
 from:start  till:-55    text:Paleocene

</timeline>