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I have 3d points and I should determine a method to produce and vis...

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 poin

dynamicsoar 2018/10/11

matlab
PCA

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Plane fit (z=ax+by+c) to 3D point data - MATLAB Answers - MATLAB Central

I have step plot (attached) and I want to fit a plane on the lower terrace of it. Excel file of point cloud is attached as well. Data represent in file is N-by-3 numeric data and each column corresponds to x, y and z. Could anyone please help me out how to fit the plane to the lower terrace?

dynamicsoar 2018/10/01

簡潔…！しかし [yourData(:,1:2), ones(N,1)] にすれば a=B(1), b=B(2), c=B(3) になってこっちの方が直感的なような（どっちでもいいが）

matlab

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xlwrite: Generate XLS(X) files without Excel on Mac/Linux/Win

dynamicsoar 2016/10/09

xlswrite は Windows OS での MS Excel でしか動かないという仕様、らしい (cf. https://jp.mathworks.com/matlabcentral/answers/20058-help-with-xlswrite ) こいつを使えばxls, xlsxを出力できる

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xlwrite : Export Data to Excel from Matlab on Mac/Win

dynamicsoar 2016/10/09

どうやらこれにインスパイアされたらしいこっち→ https://jp.mathworks.com/matlabcentral/fileexchange/38591-xlwrite--generate-xls-x--files-without-excel-on-mac-linux-win の方が新しそう

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How do I change the Java Virtual Machine (JVM) that MATLAB is using...

Since R2023b, native Apple silicon MATLAB requires a Java runtime be installed on your Mac. Amazon makes a suitable Java 8 JRE available free of charge as part of Amazon Corretto 8. For more information, see MATLAB on Apple Silicon Macs. MATLAB is only fully supported for these specified versions of the JVM software. Some components might not work properly under a different version of the JVM soft