I have a MATLAB 2022 code that used the poly.intersect function--I can't find in R2024 and need a workaround

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Chuck Dalby 2024-7-2，18:04

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回答： Steven Lord 2024-7-2，18:16

I have a MATLAB 2022 code that used the poly.intersect function--I can't find in R2024 and need a workaround to compute the intersection of polygons. The code is below. In line 12 the polyIntersect function is used:

[OutData(ii).intsecArea(i).Data, S] = polyIntersect(CoRegErrData, inPolyNewsub, inPolyOldsub);

How do I modify the code in lieu of using polyIntersect ?

for ii = 1:length(hucPoly)   
    hucSub      =   polyshape(hucPoly(ii).X, hucPoly(ii).Y);
    hucID       =   hucPoly(ii).Name;
    OutData(ii).hucID   =   hucID;    
    for i = 1:size(inFiles,1)
        inShapeOld  =   shaperead([dataFolder char(inFiles.OldShape(i))]);        
        inPolyOld   =   polyshape([inShapeOld.X],[inShapeOld.Y], 'Simplify', false);        
        inShapeNew  =   shaperead([dataFolder char(inFiles.NewShape(i))]);
        inPolyNew   =   polyshape([inShapeNew.X],[inShapeNew.Y], 'Simplify', false);        
        inPolyNewsub    =   intersect(inPolyNew, hucSub,'KeepCollinearPoints',true);
        inPolyOldsub    =   intersect(inPolyOld, hucSub);
        [OutData(ii).intsecArea(i).Data, S] = polyIntersect(CoRegErrData, inPolyNewsub, inPolyOldsub);
        OutData(ii).intsecArea(i).ID    =   char(inFiles.NewShape(i));
        if ~isnan(S(1).X(1))
            shapewrite(S, [dataFolder 'outShapes_S\' hucID '_outInt_' char(inFiles.NewShape(i))])
        end
        T   =   table(OutData(ii).intsecArea(i).Data, 'VariableNames', {'outInt_acres1' });
        writetable(T, [dataFolder 'outTables_S\' hucID '_outInt_' char(inFiles.NewShape(i)) '.txt'])
    end

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Answer 1

Steven Lord 2024-7-2，18:16

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2133871-i-have-a-matlab-2022-code-that-used-the-poly-intersect-function-i-can-t-find-in-r2024-and-need-a-wo#answer_1480046

Please don't start a new question that duplicates one that already existed. Add comments to the one that already existed.

I don't believe there has ever been a polyIntersect function in any MathWorks product. But if you're looking to intersect two polyshape objects just call intersect with the polyshape objects as inputs.