Hi Steve!<br>I <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: arial; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px;"><span class="Apple-style-span" style="border-collapse: collapse; font-family: Arial; white-space: pre;">didn't know that </span></span>mapObj <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: arial; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px;"><span class="Apple-style-span" style="border-collapse: collapse; font-family: Arial; white-space: pre;">could call </span></span>queryByPoint as well ... Thanks...<br>
But, How can I get the feature selected after query ?<br><br>Using LayerObj I did that (using layer.getNumResults() )<br><br>if (_layer.queryByPoint(MapaObj, _point, 0, -2) == 0)<br> {<br> for (int i = 0; i < _layer.getNumResults(); i++)<br>
{<br> resultCacheMemberObj _result = _layer.getResult(i);<br><br> return _result.shapeindex.ToString();<br> }<br> }<br><br>How can I do that using MapObj ?<br>
<br>thanks!<br><br><br><div class="gmail_quote">On Wed, May 20, 2009 at 10:51 AM, Steve Lime <span dir="ltr"><<a href="mailto:Steve.Lime@dnr.state.mn.us" target="_blank">Steve.Lime@dnr.state.mn.us</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
If you're doing point queries MapServer/MapScript can do this for you.<br>
You do a<br>
mapObj.queryByPoint with the MS_SINGLE mode and then the function will<br>
identify<br>
the closest feature (considering TOLERANCEs!) in the top-most ACTIVE<br>
layer.<br>
<br>
This site uses this to it's advantage...<br>
<br>
<a href="http://www.dnr.state.mn.us/maps/compass.html" target="_blank">http://www.dnr.state.mn.us/maps/compass.html</a><br>
<br>
A query drops through the layers until a match is hit.<br>
<br>
Even with other geometry types based on what was described you can<br>
probably do<br>
it pretty easily. You'd use one of the other query methods and then once<br>
the query<br>
is done loop through your layer stack backwards (e.g. starting at the<br>
top) and stop<br>
when you find one with results.<br>
<br>
Steve<br>
<br>
>>> Paul james <<a href="mailto:pauljame@gmail.com" target="_blank">pauljame@gmail.com</a>> 05/20/09 7:56 AM >>><br>
<div><div></div><div>Thanks Pano...<br>
But It́s not that simple...<br>
What I need is figure out what LAYER was clicked...<br>
<br>
Paul<br>
<br>
On Wed, May 20, 2009 at 6:43 AM, Pano Voudouris<br>
<<a href="mailto:pvoudouris@gaiocorp.com" target="_blank">pvoudouris@gaiocorp.com</a>>wrote:<br>
<br>
> Probably don’t understand what exactly you are trying to achieve here<br>
but<br>
> it is not as simple as map.getLayer(0) to get the topmost layer? And<br>
once<br>
> you have the layer object use one of the query function to select the<br>
> record? E.g. myLayerObj.queryByPoint ?<br>
><br>
><br>
><br>
> Pano<br>
><br>
><br>
><br>
> *From:* <a href="mailto:mapserver-users-bounces@lists.osgeo.org" target="_blank">mapserver-users-bounces@lists.osgeo.org</a> [mailto:<br>
> <a href="mailto:mapserver-users-bounces@lists.osgeo.org" target="_blank">mapserver-users-bounces@lists.osgeo.org</a>] *On Behalf Of *Paul james<br>
> *Sent:* 19 May 2009 21:46<br>
> *To:* <a href="mailto:mapserver-users@lists.osgeo.org" target="_blank">mapserver-users@lists.osgeo.org</a><br>
> *Subject:* [mapserver-users] Get the nearest layer with mapscript...<br>
><br>
><br>
><br>
> Hello guys...<br>
> I have several layers (lines, points, poly) ...<br>
> Ím developing a measure tool... User can click on map and I have to<br>
> select that layer to calculate de Area with postgis...<br>
><br>
> Ím trying to do that WITHOUT using "LAYER ACTIVE SYSTEM"...<br>
><br>
> Is That possible using mapscript? How Can I find the nearest and<br>
toppest<br>
> layer ?<br>
><br>
> Thanks!<br>
><br>
> Paul<br>
><br>
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><br>
><br>
<br>
</div></div></blockquote></div><br>