turf.centerOfMass for multiple polygons in Feature Collection

[tj26x]

I am having trouble with getting the data for turf.centerOfMass() correct.

I have a featureCollection which can have multiple polygons added to it.

var polygonlines = [];
//add lines to polygons etc..
    if (polygonlines.length >= 4) {
                    var feature =
                    {
                        "type": "Feature", "properties": {}, "geometry": { "type": "Polygon", "coordinates": [polygonlines] }
                    }
    
                    features.push(feature);
                }
            }
        });
    }
    var featCollection = {
        type: 'FeatureCollection',
        features: features
    }

I want to calculate the centroid, center and the centerOfMass.

var centroid = turf.centroid(featCollection); //WORKS CORRECTLY
var centre = turf.center(featCollection); //WORKS CORRECTLY

var centreofMass = turf.centerOfMass(featCollection);  //FAILS

The centerOfMass calculation fails and give me the error: "Uncaught TypeError TypeError: Qt is not a constructor"

The only way i can get centerOfMass to not fail is to list an individual polygon from the featcollection... but this is not what i want, i want the centerOfMass for multiple polygons. The turf documentation says centre and centerOfMass can take any Feature or a FeatureCollection, centre and centroid do and they work fine...

How do I get it to get the centerOfMass for multiple polygons?

Thank you very much
Version 5.6.0

[smallsaucepan]

Hi @tj26x . Can you please attach an example geojson file that causes this error?

Version 5.6.0

Also, to double check, are you using version 5.6.0 - or 6.5.0?

[tj26x]

Sorry version 6.5.0
centerOfMass-featCollection.txt

I can repeat the problem with lots of different polygons, the problem is not unique to just this one.

Thank you.

Error message (if it helps):
Uncaught TypeError TypeError: Qt is not a constructor
at ne (C:\Dev\xx\trunk\xx\wwwroot\js\turf.min.js:39:20359)
at ve (C:\Dev\xx\trunk\x\wwwroot\js\turf.min.js:39:24423)
at t (C:\Dev\xx\trunk\xx\wwwroot\js\turf.min.js:155:394937)
at calculateGroupCentreAndRadius (localhost?5001/?dataset=a8e60383-c8b1-4668-b00f-b6354076863a?490:9:234668:24)
at (localhost?5001/?dataset=a8e60383-c8b1-4668-b00f-b6354076863a?490:9:232642:9)
at dispatch (C:\Dev\xx\trunk\xx\wwwroot\lib\jquery\dist\jquery.min.js:2:43331)
at y.handle (C:\Dev\xx\trunk\xx\wwwroot\lib\jquery\dist\jquery.min.js:2:41315)
at trigger (C:\Dev\xx\trunk\xx\wwwroot\lib\jquery\dist\jquery.min.js:2:71937)
at triggerHandler (C:\Dev\xx\trunk\xx\wwwroot\lib\jquery\dist\jquery.min.js:2:72616)
at checkboxChange (C:\Dev\xx\trunk\xx\wwwroot\js\gijgo.min.js:1:109130)
at change (C:\Dev\xx\trunk\xx\wwwroot\js\gijgo.min.js:1:106987)
at dispatch (C:\Dev\xx\trunk\xx\wwwroot\lib\jquery\dist\jquery.min.js:2:43331)
at y.handle (C:\Dev\xx\trunk\xx\wwwroot\lib\jquery\dist\jquery.min.js:2:41315)