Recreate plot from image
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How can I recreate the plot in the picture? I just want to understand how to add multiple axes and how to scale every axis to different values.
I have created this:
clear
load carbig.mat
colors = [[0 0 0]; [0 0 0]; [1 0 0]; [0 1 0]; [1 0.5 0]; [1 0 1]; [0 0 0]; [0 0 1]];
data = [MPG Horsepower Weight Acceleration Displacement Cylinders*500];
labels = {'MPG', 'Horsepower', 'Weight', 'Acceleration', 'Displacement', 'Cylinders'};
lineobjects = parallelcoords(data, 'Labels',labels)
for i=1:length(lineobjects)
lineobjects(i).Color = colors((lineobjects(i).YData(6)/500),:)
%lineobjects(i).Color(4) = .15;
end
采纳的回答
Nicole Peltier
2018-9-18
You need to scale each parameter (MPG, Horsepower, etc.) by the maximum value of each parameter. I used repmat in my code so that the scaling could be done in a single line instead of a for-loop.
% Find maximum value for each variable
% Use repmat to allow for vectorization (faster computation)
column_max = repmat(max(data), size(data, 1), 1);
% Scale data so that max value for each variable = 1
data_scaled = data./column_max;
h = figure();
set(h,'DefaultAxesColorOrder',[1 0 0; 0 1 0; 1 1 0; 1 0 1; 0 0 1]);
lineobjects = parallelcoords(data_scaled,'Group',Cylinders,'Labels',labels);
The code above will produce the following figure (not an exact replica of the figure you sent, but you can mess around with annotations and axis labels):
Hope this helps!
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