RE: [Maptitude] taking elements out of an array

[Chandler Coleman]

Thanks.  This work exactly how I needed it to do.  Question, in your example you use: {a, } = GetMapLayers(, "Point") {b, } = GetMapLayers(, "Active") Setting a & b in {} with a coma after it… What does this do?  How is this different then the following a = GetMapLayers(, "Point") b = GetMapLayers(, "Active")   Thanks for the help.     Chandler Coleman Research & Market Analysis Albertsons, Inc. (208) 395-4650   From: Maptitude@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Kjartan Stefansson Sent: Thursday, June 01, 2006 6:58 AM To: Maptitude@yahoogroups.com Subject: Re: [Maptitude] taking elements out of an array   Chandler,   You can loop over one array and remove from it any elements that don't occur in the other one.   {a, } = GetMapLayers(, "Point") {b, } = GetMapLayers(, "Active") for i = a.length to 1 step -1 do     if ArrayPosition(b, {a[i]}, ) = 0 then         // a[i] is not in b so remove it         a = ExcludeArrayElements(a, i, 1) end ShowArray(a) -Kjartan   From: Chandler Coleman [mailto:[EMAIL PROTECTED]] To: Maptitude@yahoogroups.com Sent: Wed, 31 May 2006 18:48:26 -0400 Subject: [Maptitude] taking elements out of an array I have used two functions: GetMapLayers(, "Point") GetMapLayers(, "Active") I now have an array with 43 elements and another with 6. I want to now compare the two and include only the layers that are in both. However, I have tried the ExcludeArrayElements() and the InsertArrayElements() with zero success. What functions do I use to get a new array with what both these arrays have in common? Thanks Chandler ------------------------ Yahoo! Groups Sponsor --------------------~--> Everything you need is one click away.  Make Yahoo! your home page now. http://us.click.yahoo.com/AHchtC/4FxNAA/yQLSAA/C5grlB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Maptitude/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/       SPONSORED LINKS Geographic information systems Geography game Geography YAHOO! GROUPS LINKS  Visit your group "Maptitude" on the web.    To unsubscribe from this group, send an email to:  [EMAIL PROTECTED]    Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.