inline function returning multiple output variables

Question

Pete sherer 2023-8-25

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2013137-inline-function-returning-multiple-output-variables

评论： Pete sherer 2023-8-25

tdata = table(["US";"US";"US";"UK";"UK";"TW";"TW";"TW";"TW"], [1;1;5;1.20000000000000;3;4;5;1;2],'VariableNames',{'name','Loss'});
tecdf = @(x) ecdf( x, 'Function', 'survivor');
tout = varfun( tecdf, tdata, 'GroupingVariables','name','Input','Loss')
tout = 11×3 table
    name    GroupCount    Fun_Loss
    ____    __________    ________

    "TW"        4               1 
    "TW"        4            0.75 
    "TW"        4             0.5 
    "TW"        4            0.25 
    "TW"        4               0 
    "UK"        2               1 
    "UK"        2             0.5 
    "UK"        2               0 
    "US"        3               1 
    "US"        3         0.33333 
    "US"        3               0 

tout only contains the first output from ecdf function. Is there a way to have it returns both output variables?

Thanks,

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Answer 1

Matt J 2023-8-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2013137-inline-function-returning-multiple-output-variables#answer_1293872

编辑：Matt J 2023-8-25

在 MATLAB Online 中打开

A wrapper is needed.

tdata = table(["US";"US";"US";"UK";"UK";"TW";"TW";"TW";"TW"], [1;1;5;1.20000000000000;3;4;5;1;2],'VariableNames',{'name','Loss'});
tecdf = @(x) ecdfWrapper( x, 'Function', 'survivor');
tout = varfun( tecdf, tdata, 'GroupingVariables','name','Input','Loss')
tout = 11×3 table
    name    GroupCount         Fun_Loss     
    ____    __________    __________________

    "TW"        4               1          1
    "TW"        4            0.75          1
    "TW"        4             0.5          2
    "TW"        4            0.25          4
    "TW"        4               0          5
    "UK"        2               1        1.2
    "UK"        2             0.5        1.2
    "UK"        2               0          3
    "US"        3               1          1
    "US"        3         0.33333          1
    "US"        3               0          5
function out=ecdfWrapper(x,varargin)
  [o1,o2]=ecdf( x, varargin{:});
  out=[o1,o2];
end

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Image Analyst 2023-8-25

Rather than have to have an anonymous function use a wrapper function, why not just make the anonymous function into a regular function? Then there's no need for the anonymous function anymore.

Pete sherer 2023-8-25