Map Alignment

I'm trying to align a map from the 1840's with a a modern day map from
Google Maps. I have both maps in different layers and have tried
everything with the free transform tool and the opacity set around 50%
but it seems there are lots of subtle alignment differences. If I
align points A and B, C is no longer aligned, etc etc. Is there a way
to stretch and rotate a map by points? (Probably in a non uniform
manner) Or any other ideas how to go about this?

Eventually I'll be overlaying the map into Google Maps to create a
historical view of the area, but before then the maps need to line up.

Thanks,
Brian M

On 3 May 2007 08:33:48 -0700, "bmichalski@gmail.com"
<bmichalski@gmail.com> scribbled:

>I'm trying to align a map from the 1840's with a a modern day map from
>Google Maps. I have both maps in different layers and have tried
>everything with the free transform tool and the opacity set around 50%
>but it seems there are lots of subtle alignment differences. If I
>align points A and B, C is no longer aligned, etc etc. Is there a way
>to stretch and rotate a map by points? (Probably in a non uniform
>manner) Or any other ideas how to go about this?
>
>Eventually I'll be overlaying the map into Google Maps to create a
>historical view of the area, but before then the maps need to line up.

Experiment with skew and perspective in the free transform mode.

<bmichalski@gmail.com> wrote in message
news:1178206428.325725.194120@e65g2000hsc.googlegr oups.com...
> I'm trying to align a map from the 1840's with a a modern day map from
> Google Maps. I have both maps in different layers and have tried
> everything with the free transform tool and the opacity set around 50%
> but it seems there are lots of subtle alignment differences. If I
> align points A and B, C is no longer aligned, etc etc. Is there a way
> to stretch and rotate a map by points? (Probably in a non uniform
> manner) Or any other ideas how to go about this?
>
> Eventually I'll be overlaying the map into Google Maps to create a
> historical view of the area, but before then the maps need to line up.
>
> Thanks,
> Brian M


if you press control and hover the mouse cursor near the corner, the point
will skew instead of stretch