Load and visualize the file data (attached). This is data cloud of 3d points . You will want to examine the first "field" coordinates associated with each "node"(x,y,z). The units are in mm. Load the second field "error". Determine a method to produce and visualise a "center line" down the central axis of figure. Determine a method to calculate the radius/diameter of the figure at a number of points down this center line. Provide an estimate of the overall figure "length" and "volume".
MATLAB: I have 3d points and I should determine a method to produce and visualize a “center line” down the central axis
3dcentral line
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You're passing in a color image and imhist() is not set up for that. If you want 3 histograms, extract each color channel independently,
% Extract the individual red, green, and blue color channels.
redChannel = rgbImage(:, :, 1);greenChannel = rgbImage(:, :, 2);blueChannel = rgbImage(:, :, 3);like in the attached demo, and histogram each color channel one at a time. Or if you don't care which color channel, then just lump them all together with (:)
imhist(rgbImage(:));Try this:
data = readmatrix('data.xlsx')months = {'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'};[rows, columns] = size(data)for k = 1 : 2 : columns plot(data(:, k), data(:, k+1), '.-', 'LineWidth', 2, 'MarkerSize', 20); hold on;endfontSize = 18;xlabel('Day', 'FontSize', fontSize);ylabel('kWh', 'FontSize', fontSize);grid on;legend(months);
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