Clarity when you have multiple plots
3 views (last 30 days)
Show older comments
Hey guys! I have one .csv file containing 8 columns. I want to plot 8th column (Time200) on x axis and remaining 7 columns on y axis. I did that but plots look messy, I mean its hard to interprate the difference among graphs. Is there any way to make these plots clear or interpratable. I will appreciate any kind of help. Thank you.
0 Comments
Accepted Answer
Image Analyst
on 30 Aug 2022
Edited: Image Analyst
on 2 Sep 2022
How about this:
% Initialization Steps.
clc; % Clear the command window.
close all; % Close all figures (except those of imtool.)
clear; % Erase all existing variables. Or clearvars if you want.
workspace; % Make sure the workspace panel is showing.
format long g;
format compact;
fontSize = 18;
data = importdata('Plotdata.csv');
timeData = data.data;
columnHeaders = data.colheaders;
[rows, columns] = size(timeData);
% Sort by column 8 in ascending order
timeData = sortrows(timeData, 8)
t = timeData(:, end); % Times are the last column.
% Make up colors for the plot lines
plotColors = jet(columns - 1);
% Plot columns 1 to columns-1
for col = 1 : columns - 1
y = timeData(:, col);
plot(t, y, '.-', 'Color', plotColors(col, :), 'LineWidth', 2, 'MarkerSize', 30);
hold on;
end
xlabel('Time', 'FontSize',fontSize);
ylabel('y', 'FontSize',fontSize);
grid on;
hold off;
legend(columnHeaders(1:end-1), 'Location', 'southwest')
[EDIT] plot with original data removed at poster's request.
3 Comments
Image Analyst
on 2 Sep 2022
As requested, I've changed my program to not use your data, which looked pretty generic by the way. I wrote a program to create some plots and run it with both unsorted times (like you have) and with the times sorted. The results are shown below:
% Demo by Image Analyst
% Initialization Steps.
clc; % Clear the command window.
close all; % Close all figures (except those of imtool.)
clear; % Erase all existing variables. Or clearvars if you want.
workspace; % Make sure the workspace panel is showing.
format long g;
format compact;
fontSize = 18;
% data = importdata('Plotdata.csv');
% timeData = data.data;
[t, timeData, columnHeaders] = CreateSampleData();
% columnHeaders = data.colheaders;
[rows, columns] = size(timeData);
promptMessage = sprintf('Do you want to sort the times?');
titleBarCaption = 'Sort?';
buttonText = questdlg(promptMessage, titleBarCaption, 'Yes', 'No', 'Quit', 'Yes');
if contains(buttonText, 'Quit', 'IgnoreCase', true)
return; % or break or continue.
elseif contains(buttonText, 'Yes', 'IgnoreCase', true)
% Sort time in ascending order
t = sort(t);
plotTitle = 'Using sorted times';
else
plotTitle = 'Using unsorted times';
end
% Make up colors for the plot lines
plotColors = jet(columns);
% Plot columns
for col = 1 : columns
y = timeData(:, col);
plot(t, y, '.-', 'Color', plotColors(col, :), 'LineWidth', 2, 'MarkerSize', 30);
hold on;
end
title(plotTitle, 'FontSize', fontSize);
xlabel('Time', 'FontSize',fontSize);
ylabel('y', 'FontSize',fontSize);
grid on;
hold off;
legend(columnHeaders(1:end), 'Location', 'southwest')
%=============================================================================================
function [t, timeData, columnHeaders] = CreateSampleData()
rows = 15;
columns = 8;
columnHeaders = cell(columns, 1);
baseCurve = linspace(0.17, 0.10, rows)';
t = 1 : rows;
% Scramble order of the times, like the original poster had.
randomOrder = randperm(length(t));
t = t(randomOrder);
% Add noise and lift
for col = 1 : columns
thisCol = baseCurve + .1 * col + 0.05 * rand(rows, 1);
timeData(:, col) = thisCol;
columnHeaders{col} = sprintf('Time %d', col);
end
end
More Answers (0)
See Also
Categories
Find more on Line Plots in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!