Well, I've done enough maps processing on my own, so it's time to see if somebody else can help. Basically, I want to recalibrate all the 1923 MOT Half Inch maps as there are numerous errors, particularly around the coast which just don't look right - the aim then is to be able to trace vector routes from them as mentioned in this thread
This is mildly
technical - you don't need to be a programmer to do it.
Go to http://www.sabre-roads.org.uk/temp/transfer/mot
and you'll see a bunch of map images, and a file maprect.zip
. Download MapRect, unzip it and run it. Download a map image, click on "Open" and open it.
Now, start at the top left hand corner and click on every grid line intersection, going from left to right, top to bottom. As you click, each pixel gets annotated in the list to the left and marked with a red blob so you can see it. If you make a mistake, click on "Undo" to remove the most recently added marker.
When you've finished, you should end up with something like this.
maprect.PNG [ 1.32 MiB | Viewed 1104 times ]
Now save the file and attach it to this thread.
Each one should probably take half an hour the first time you do it (though I've got it down to about 15 - 20 minutes). I've attached a few I've done already for you to see how it's done.
Any questions, let me know.