MapAnalyst

If you're passionate about maps, you might've studied some old ones and noticed that sometimes there might be some accuracy issues due to various reasons, such as distortion or miscalculations.

Luckily for you, you can turn to specialized third-party software solutions such as MapAnalyst that can help you analyze the old maps by taking several parameters into consideration.

As stated above, you can turn to this application if you need to analyze the accuracy of an old map easily. You just have to upload an image of an old map and use the new one on the right as a reference value, although note that sometimes, some images won't be imported, rendering the app useless.

The application's purpose is to compute distortion grids as well as other visualization types that determine the distortion and geometrical accuracy of the old maps you're trying to analyze. The interface is simple enough to be used even by computer novices or users who have no previous experience with similar software.

In order to construct a distortion grid, the application needs that you configure control points on both the old map and the new one alike by simply using the options under the "Points" menu.

Aside from creating the distortion grids by analyzing the pairs of control points, MapAnalyst also generates accuracy circles, displacement vectors as well as isolines of local scale and rotation. More so, the statistical indicators, rotation and map scale of the old map are also taken into consideration during the analysis process.

If you want a quick way to analyze old maps on your computer by comparing them against newer versions of them and control points, you might've found what you were looking for. MapAnalyst comes with a simple interface, doesn't hog your memory or space, but sometimes importing an image within the app might prove impossible.