18.08.2010, 13:03
I first do an extensive search on line to find a good geographical map of the area as close the historic date I'm mapping.National Geaographic can helpful as they have excellent maps and can be located by specific year. University libraries can be a good sources also. Google earth can be misleading because of the dramatic human intervention with river courses caused dams and irrigation projects created since the war years.
I then scan and trace or down load and trace the map feature I need like rivers, cities, even contour of high groun. Trace these as seperate layers and super impose the on map H for rivers. The ed_map can be created the same way by layering each feature and then transfering the layer to the T map for terraine features after scaling to correct size. I do the ed_map first and use it. In all cases be sure to make back up copies of your work before and after making addition incase something goes wrong. It is possible to create the entire map by the layering technique. The trouble with the micro is that it is base on the ground as it today and can include many features that just weren't there in the past.
I then scan and trace or down load and trace the map feature I need like rivers, cities, even contour of high groun. Trace these as seperate layers and super impose the on map H for rivers. The ed_map can be created the same way by layering each feature and then transfering the layer to the T map for terraine features after scaling to correct size. I do the ed_map first and use it. In all cases be sure to make back up copies of your work before and after making addition incase something goes wrong. It is possible to create the entire map by the layering technique. The trouble with the micro is that it is base on the ground as it today and can include many features that just weren't there in the past.