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Plotting with Gadfly.jl

Imports





In [1]:



    


using Gadfly
using DataFrames, RDatasets



    


















    






WARNING: Method definition describe(AbstractArray) in module StatsBase at /Users/mrestrep/.julia/v0.5/StatsBase/src/scalarstats.jl:573 overwritten in module DataFrames at /Users/mrestrep/.julia/v0.5/DataFrames/src/abstractdataframe/abstractdataframe.jl:407.

Basics

Simple line scatter

  • Pass data keyword arguments inputs




In [2]:



    


function linescatter()
    x = [1, 2, 3, 4]
    y = [10, 15, 13, 17]
    plot(x=x,y=y, Geom.line)
end
linescatter()



    


















    
Out[2]:









  
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    y

Customize and add multiple traces to one plot

  • Each trace is a layer with its own aesthetics

Challenge: How to plot dashes?





In [3]:



    


function multiple_scatter_traces()
    x=1:4
    l1 = layer(x = x, y = [10, 15, 13, 17],  Geom.point)
    l2 = layer(x = x, y = [16, 5, 11, 9], Geom.line)
    l3 = layer(x = x, y = [12, 9, 15, 12], Geom.point, Geom.line)
    l4 = layer(x = x, y = [5, 10, 8, 12], Geom.line)
    plot(l1, l2, l3, l4)
end
multiple_scatter_traces()



    


















    
Out[3]:









  
    x
  
  
    -5
    -4
    -3
    -2
    -1
    0
    1
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    y

Data labels and Figure Layout

  • Add the array of labels as an attribute to each trace
  • Layout modifies the "Figure Pane Attributes"




In [4]:



    


function data_labels()
    x = 1:5
    y1 = [1, 6, 3, 6, 1]
    y2 = [4, 1, 7, 1, 4]
    y1_labels = ["A-1", "A-2", "A-3", "A-4", "A-5"]
    y2_labels = ["B-a", "B-b", "B-c", "B-d", "B-e"]

    l1 = layer(x = x, y = y1, label=y1_labels, Geom.label, Geom.point)
    l2 = layer(x = x, y = y2, label=y2_labels, Geom.label, Geom.point) 
    plot(l1,l2)
end
data_labels()



    


















    
Out[4]:









  
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        B-a
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        B-d
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        A-1
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    y

Area





In [5]:



    


function area1()
end
area1()

Other visual interpretations of Matrix Data and Subplots





In [6]:



    


function matrix_subplots()

end

matrix_subplots()

Advanced Layouts





In [7]:



    


function advanced_layouts()

end
advanced_layouts()

Stats Plots





In [8]:



    


function grouped_bar_example()

end

grouped_bar_example()



    











In [9]:



    


function stacked_bar_example()
    
end
stacked_bar_example()



    











In [10]:



    


function two_hists()

end

two_hists()

Box (Whisker) Plots





In [11]:



    


function box_plot()
   
end
box_plot()

Using DataFrames





In [12]:



    


function data_frame_scatter()
    iris = dataset("datasets", "iris");
    display(head(iris))
end

data_frame_scatter()



    


















    







SepalLengthSepalWidthPetalLengthPetalWidthSpecies
15.13.51.40.2setosa
24.93.01.40.2setosa
34.73.21.30.2setosa
44.63.11.50.2setosa
55.03.61.40.2setosa
65.43.91.70.4setosa

Content source: bcbi/julia_tutorials

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