[perryp]

I was looking for a hi-res streetmap of london, (to print and put on a wall), but couldn't find anything...

However, there is this which let's you see only a very small part of a zoomed-in map at once,

I thought about copying each image and pasting it together in photoshop... but it would take about a week to do it.

I've worked out that the site generates jpegs on the fly, and they can be displayed with the following url:

http://booth.lse.ac.uk/cgi-bin/mrsid...amp;height=600

The URL above shows the top-left corner of the map (hence the blacked out bit), because x=0 and y=0 in the URL. The width and height maximums appear to be 800 and 600 respectively (you can put in more but it won't make a difference)

Now, what I'd like to do is get an Applescript to automatically step thru all the images and paste them together in Photoshop.

Here's the pseudo-code:
loop while X = 0 to 21600 step 800
--loop while Y = 0 to 14400 step 600
----load URL in Safari with X and Y co-ordinates
----copy the image
----paste image in Photoshop in correct position
--end loop
end loop


Unfortunately, I don't know any Applescript, so any ideas?

[Chuckit]

As far as I know, Safari doesn't allow you to copy images through scripting.

[Diggory Laycock]

The maps are Copyrighted - so technically you are stealing... (+ you are stealing bandwidth from the LSE.)

2 - this script only does the getting - the stitching together in Photoshop is up to you.

Code:
set xindex to 0

repeat until xindex > 21600
set yindex to 0
	repeat until yindex > 14400
		--		log (yindex)
		set urlString to "http://booth.lse.ac.uk/cgi-bin/mrsid2jpeg.pl?image=/images/maps/barth2000.sid&x=" & xindex & "&y=" & yindex & "&level=0&width=800&height=600"
		set localPath to "~/mapImages/" & xindex & "x" & yindex & ".jpg"
		set scriptText to "curl \"" & urlString & "\" -o " & localPath
		do shell script (scriptText)
		-- log (scriptText)
		set yindex to (yindex + 600)
	end repeat
	set xindex to (xindex + 800)
end repeat

for the code to work properly you will need a directory called "mapImages" in your home dir.

oh - p.s. don't blame me when the LSE bans your IP addr !

p.s. the total number of images you will download is 648 at about 100k each - that's about 65 Mb.

[edited to fix looping error and 600 vs 800 typo]