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旧 2019-12-10, 16:49   #1
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帖子 如何将python元组解压缩转换为Matlab?

我正在将一些python代码转换为Matlab,并想找出将python元组解压缩到Matlab的最佳方法是什么。

就本示例而言, Body是一个类,其构造函数将两个函数作为输入。

我有以下python代码:

X1 = lambda t: cos(t) Y1 = lambda t: sin(t) X2 = lambda t: cos(t) + 1 Y2 = lambda t: sin(t) + 1 coords = ((X1,Y1), (X2,Y2)) bodies = [Body(X,Y) for X,Y in coords] 转换为以下Matlab代码

X1 = @(t) cos(t) Y1 = @(t) sin(t) X2 = @(t) cos(t) + 1 Y2 = @(t) sin(t) + 1 coords = {{X1,Y1}, {X2,Y2}} bodies = {} for coord = coords, [X,Y] = deal(coord{1}{:}); bodies{end+1} = Body(X,Y); end 身体在哪里

classdef Body < handle properties X,Y end methods function self = Body(X,Y) self.X = X; self.Y = Y; end end end 有没有更好,更优雅的方法来表达Matlab中python代码的最后一行?


回答:
不知道Body是什么,这是我的解决方案:

bodies = cellfun(@(tuple)Body(tuple{1},tuple{2}), coords); 或者,如果输出必须封装在单元格数组中:

bodies = cellfun(@(tuple)Body(tuple{1},tuple{2}), coords, 'UniformOutput',false); 仅出于测试目的,我尝试了以下方法:

X1 = @(t) cos(t); Y1 = @(t) sin(t); X2 = @(t) cos(t) + 1; Y2 = @(t) sin(t) + 1; coords = {{X1,Y1}, {X2,Y2}}; %# function that returns a struct (like a constructor) Body = @(X,Y) struct('x',X, 'y',Y); %# tuples unpacking bodies = cellfun(@(tuple)Body(tuple{1},tuple{2}), coords); %# bodies is an array of structs bodies(1) bodies(2)

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