Where is the polyIntersect.m function in R2024 and how do I load it ?

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Chuck Dalby 2024-7-2

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评论： Chuck Dalby 2024-7-6

采纳的回答： Star Strider

I have updated my R2022 license and can't locate the polyIintersect.m function and load it ? I need the function

for an old program

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Star Strider 2024-7-2

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I can’t find it in the online documentation. There are several Mapping Toolbox functions, specifically polyxpoly, as well as other intersection functions.

To the best of my knowledge, thater are none in core MATLAB, although there are several in the File Exchange.

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Walter Roberson 2024-7-2

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polyintersect appears to be part of MRST (MATLAB Resevoir Simulation Toolbox), https://www.sintef.no/contentassets/2551f5f85547478590ceca14bc13ad51/nwm.html

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Chuck Dalby 2024-7-4

在 MATLAB Online 中打开

I copied polyintersect.m into the current directory and the program ran but with these error messages:

Warning: Polyshape has duplicate vertices, intersections, or other inconsistencies that may produce inaccurate or unexpected results. Input data has been modified to create a well-defined polyshape.

> In polyshape/checkAndSimplify (line 526)

In polyshape (line 175)

In SDP_Sprinkler_1 (line 23)

I have had no problem with the simplify process below, but get the error message below--I have attached the full code for context

Error using vertcat

The following error occurred converting from struct to polyshape:

x- and y-coordinate vectors must both be numeric or both be cell arrays.

Error in polyintersect (line 8)

min_x = min([X1(:); X2(:)]);

Error in SDP_Sprinkler_1 (line 36)

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

%% Load Data
inFiles     =   readtable('C:\MT_Conversion_Flood_to_Sprinkler\SDP\SDP_Project\inFiles\Overlays_S.xlsx');
dataFolder  =   'C:\MT_Conversion_Flood_to_Sprinkler\SDP\SDP_Project\data_folder\';
load('C:\MT_Conversion_Flood_to_Sprinkler\SDP\SDP_Project\CoRegErrData.mat')
%% set subset
hucPoly     =   shaperead('C:\MT_Conversion_Flood_to_Sprinkler\SDP\SDP_Project\HUC4_Montana.shp');
    %'C:\Users\kintla\Documents\SDP_Files\HUC4_Montana.shp']);
%% Run analysis
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
end

Chuck Dalby 2024-7-5

The CoRegErrData file is large (7GB) and I am not sure how to create the polyshape objects ?

Chuck Dalby 2024-7-6

Hmmmm. If one looks at the code above it contains conversion of the data to polyshape objects ?

inPolyOld = polyshape([inShapeOld.X],[inShapeOld.Y], 'Simplify', false);

inShapeNew = shaperead([dataFolder char(inFiles.NewShape(i))]);

inPolyNew = polyshape([inShapeNew.X],[inShapeNew.Y], 'Simplify', false);

So I don't understand the need to do so again ?

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Where is the polyIntersect.m function in R2024 and how do I load it ?

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