Plot time series data colored by color coded by ID

Hi,

I'm trying to plot a set of data (example: aircraft data) from a .csv file from three columns:

Aircraft ID, Time, and Altitude

I would like to plot altitude over time and then be able to color code each line by the aircraft ID. I know I need a for loop and I also need to specify colors in the loop but I'm not sure how to get started. Thank you!

Answer 1

[Walter Roberson]

t = readtable('YourFile.csv');
[G, ID] = findgroups(t{:,1});
hold on
h = splitapply(@plot, t{:,2}, t{:,3}, G);
xlim auto; ylim auto

if isnumeric(ID)
    legend(string(ID));
else
    legend(ID);
end

h will now be a vector of chart line objects. Different color and line style combinations will have automatically been chosen for the lines, but at this point you can also set the line() properties as desired. For example,

color_cell = num2cell( parula(size(ID,1)), 2);
set(h, {'Color'}, color_cell);       %important that you use cell array for property name

[Jennifer]

Wow, that was quick! I'll give it a try. Thank you!