[Mapserver-users] Re: perl / mapscript

Puneet Kishor pkishor at geoanalytics.com
Mon Mar 17 10:16:27 EST 2003 

> -----Original Message-----
> From: Paul Dymecki [mailto:millardymecki at sympatico.ca] 
> Sent: Monday, March 17, 2003 9:13 AM
> To: pkishor_98; MapServer List (E-mail); Lowell Filak
> Subject: Re: [Mapserver-users] Re: perl / mapscript
> 
> 
> Hi,
>     I think the prob i'm haveing now(in php) is that i'm 
> trying to simulate
> a point click, ie no map is even drawn i'm just querying 
> based on lat/lon
> that is provided.  Does anyone have any idea if this is doable?

sure... all that a point click on a map does is send back an x,y pair. This
is a property of the form and image tags in html. Click on an image inside a
form, and the x,y of the click will be sent back.

Once you have the x,y, you can convert them from pixel-space to geog. space,
and bingo, you have a point to now query for.

You don't have to have a map and a point click. If you know the point
already, heck, just send it. Since you know it in geog. space, you don't
even have to transform it. You are good to go.


> thx,
> Paul
> ----- Original Message -----
> From: "Lowell Filak" <lfilak at medinaco.org>
> To: "Paul Dymecki" <millardymecki at sympatico.ca>; "pkishor_98"
> <pkishor at geoanalytics.com>; "MapServer List (E-mail)"
> <mapserver-users at lists.gis.umn.edu>
> Sent: Monday, March 17, 2003 9:30 AM
> Subject: Re: [Mapserver-users] Re: perl / mapscript
> 
> 
> > Sorry for coming into this late.
> > Obviously, whichever solution works better for you & the
> application/people supplying the data is the one to use.
> > The PerlMapscript example containing the queryByPoint is:
> http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?PerlMapScriptExam
> ples35ex7
> > You will/would need to modify it to parse out the long/lat 
> that is passed
> to it and you can remove all the code that is used to 
> translate the pixel
> coordinates to real-world coordinates.
> > HTH
> > Lowell F.
> >
> > The following message was sent by "Paul Dymecki"
> <millardymecki at sympatico.ca> on Sun, 16 Mar 2003 23:55:38 -0500.
> >
> > > Well the scenario is this:  There are points(lat/lon) entered by
> individuals
> > > as to siteings of a particular plant species.  A quality assurance
> > > program(perl script) is periodically run to determine if 
> there are any
> > > points located outside of their known regions(vegetation 
> polygons).
> Write
> > > now i'm takeing the simplistic approach and creating a 
> command line php
> > > script that takes in a  lat/lon spits out a polygon name. 
>  I'm just
> haveing
> > > issues with command line / mapscript.
> > > Paul
> > > ----- Original Message -----
> > > From: "pkishor_98" <pkishor at geoanalytics.com>
> > > To: <mapserver-users at lists.gis.umn.edu>
> > > Sent: Sunday, March 16, 2003 11:18 PM
> > > Subject: [Mapserver-users] Re: perl / mapscript
> > >
> > >
> > > > --- In mapserver-users at yahoogroups.com, "Paul Dymecki"
> > > > <millardymecki at s...> wrote:
> > > > > Well actually i may be makeing this more complicated 
> then it needs.
> I've
> > > > > built a phpmapscript application containing vegetaion
> > > > zones(polygons) around
> > > > > the country.  There is a larger perl application(not 
> under my care)
> that
> > > > > will pass me a lat/lon.
> > > >
> > > > this larger perl app... is this a mapserver app? if 
> yes, then it is
> > > > running on unix, because perl/mapscript is possible only on unix
> > > > (afaik). If not, then how do you query it? Is it a pure perl app
> > > > accessing a database? In which case you could simply access the
> > > > database directly from PHP.
> > > >
> > > > See, the problem is not that you can run perl/mapscript and
> > > > php/mapscript simultaneously. The problem is whether 
> you can run them
> > > > in the same script. On the server, the script has to be 
> interpreted by
> > > > either the PHP interpreter, or by the Perl 
> interpreter... can't do
> > > > both. One or the other. What you can do is have the Perl script
> > > > construct a PHP script that you then run from the web. 
> In which case
> > > > you would build a script with the lat/lon values filled 
> in. But, yes,
> > > > this could be complicated.
> > > >
> > > > Care to give more details?
> > > >
> > > >
> > > >
> > > > >I then have to query and return which vegetation
> > > > > zone this point resides in.  So the script would be a 
> backend one
> > > > with no
> > > > > user/map interaction at all.  Would  that be possible.
> > > > > Paul
> > > > > ----- Original Message -----
> > > > > From: "pkishor_98" <pkishor at g...>
> > > > > To: <mapserver-users at l...>
> > > > > Sent: Sunday, March 16, 2003 9:43 PM
> > > > > Subject: [Mapserver-users] Re: perl / mapscript
> > > > >
> > > > >
> > > > > > --- In mapserver-users at yahoogroups.com, "Paul Dymecki"
> > > > > > <millardymecki at s...> wrote:
> > > > > > > HI Steve,
> > > > > > >     Do you know if Perl/mapscript is available on 
> windowsXP?
> > > > > >
> > > > > > afaik, perl/mapscript only compiles on unix (I 
> believe these a
> > > > > > swig-related problems). To date I have not met 
> anyone who has it
> > > > > > running on Windows.
> > > > > >
> > > > > >
> > > > > > That said, I read your original question. What Steve says is
> true...
> > > > > > you can run both perl and php mapscripts, but the 
> question asks
> > > > > > itself... why? I don't know of anything you can do 
> in one you
> can't in
> > > > > > the other. If it is all under your control, stick 
> with one...
> > > > > > php/mapscript is well supported under Windows. The 
> good folks at
> DM
> > > > > > Solutions have made wonderful examples available, many other
> people
> > > > > > (myself included) have created successful apps... 
> php/mapscript
> seems
> > > > > > to be a viable, perhaps the only, solution on windows.
> > > > > >
> > > > > > You want to share more as to why you want to mix 
> perl and php on
> > > > windows?
> > > > > >
> > > > > >
> > > > > > The only
> > > > > > > installation docs i could find were for unix.
> > > > > > > thx
> > > > > > > Paul
> > > > > > > ----- Original Message -----
> > > > > > > From: <woodbri at s...>
> > > > > > > To: "MapServer List EE-mail"" 
> <mapserver-users at l...>; "Paul
> > > > > > > Dymecki" <millardymecki at s...>
> > > > > > > Sent: Saturday, March 15, 2003 9:55 AM
> > > > > > > Subject: Re: [Mapserver-users] perl / mapscript
> > > > > > >
> > > > > > >
> > > > > > > > Yes you can have both running. Remember that 
> mapscript is just
> a
> > > > > > > > wrapper to give you programmatic access to Mapserver.
> > > > > > > >
> > > > > > > > There are examples of Perl/Mapscript on wiki 
> and I'm pretty
> > > > sure one
> > > > > > > > of them calls querybypoint (although I haven't 
> verified that).
> > > > > > > >
> > > > > > > > -Steve W.
> > > > > > > >
> > > > > > > > On 15 Mar 2003 at 9:24, Paul Dymecki wrote:
> > > > > > > >
> > > > > > > > > Hi,
> > > > > > > > >     Conveniently enough i need some help with a perl
> question
> > > > > > > > >     regarding php. I was wondering what the 
> best way of
> > > > calling a
> > > > > > > > >     mapscript querybypoint function from 
> perl?  My current
> > > > app is in
> > > > > > > > >     php but need to communicate with another perl
> application.
> > > > > > Is it
> > > > > > > > >     possible to have both perl-mapscript and 
> php-mapscript
> > > > > > running on
> > > > > > > > >     the same server?
> > > > > > > > > thx for any help,
> > > > > > > > > Paul
> > > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > >
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