On Feb 15, 2011, at 8:41 AM, John Dixon wrote:
Could some please point me in the right direction...
I
would like to use the browser object in a stack to display a google
map… that I can do. I would like to be able to choose a postcode or
the
name of a town or village from a list in a field in the stack to place
the two markers, showing the start and finish location, get the
direction drawn on the google map and the total distance put into
another field in the stack...
If someone could point me in the
the right direction (no pun intended !) of how to go about doing this
from within LiveCode… it would be appreciated as I don't know really
where to start..
Here is a function I have used to fetch the total distance between two
addresses from Google maps. The function returns the distance without
displaying any map, but you could play with the script to also display
the map.
--------
function getMileage
put "http://maps.googleapis.com/maps/api/directions/xml?"; & \
"origin=<tOrig>&destination=<tDest>&sensor=false" into tURL
put fld "from" into tStart
put fld "to" into tEnd
replace "<tOrig>" with urlEncode(tStart) in tURL
replace "<tDest>" with urlEncode(tEnd) in tURL
put URL tURL into t
put lineoffsets("<distance>",t) into startSect
put item -1 of startSect into startSect
put lineoffsets("</distance>",t) into endSect
put item -1 of endSect into endSect
if startSect = 0 or endSect = 0 then
beep
exit to top
end if
put line startSect+1 to endSect-1 of t into tSect
put lineoffset("<text>",tSect) into dLine
if dLine = 0 then
beep
exit to top
end if
put sr(line startSect + dLine of t) into tMiles
-- <text>3.6 mi</text>
replace "<text>" with empty in tMiles
delete word -1 of tMiles
return tMiles
end getMileage
-- Peter
Peter M. Brigham
pmb...@gmail.com
http://home.comcast.net/~pmbrig
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