proj4 = '+proj=tmerc +lat_0=4.59904722222222 +lon_0=-74.0809166666667 +k=1 +x_0=1000000 +y_0=1000000 +ellps=intl +towgs84=-806.413,-263.5,-622.671,6.018583e-05,-1.450001e-05,-0.0001892455,-20.81616 +units=m +no_defs +type=crs'
m = Map(256,256,proj4)
lyr = Layer('Name',proj4)