I get: Uncaught TypeError: Cannot read property 'x' of undefined at proj4js-combined.js:2720

While executing this code (transforming polygon from one system to another):

Proj4js.defs['EPSG:3765'] = '+proj=tmerc +lat_0=0 +lon_0=16.5 +k=0.9999 +x_0=500000 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs';

var source = new Proj4js.Proj('EPSG:3765');
var wgs84 = new Proj4js.Proj('EPSG:4326');

var polygon = Proj4js.transform(source, wgs84, features[0].geometry.Polygon);       


1 Answer 1


You shouldn't be referencing Polygon after geometry.

The code should be

var polygon = Proj4js.transform(source, wgs84, features[0].geometry); 

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