proj4.defs("EPSG:6261","+proj=col_urban +lat_0=2.94241505555556 +lon_0=-75.2964367222222 +x_0=864476.923 +y_0=817199.827 +h_0=430 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");