<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi the pb is solved with this code.<div><br></div><div>variables map.getScale ( ); or getZoom send a good information if it's inside a function ..... </div><div><br></div><div><div><font class="Apple-style-span" color="#3c00ff"><span class="Apple-tab-span" style="white-space:pre"> </span>style = new OpenLayers.Style({</font></div><div><font class="Apple-style-span" color="#3c00ff"> <span class="Apple-tab-span" style="white-space: pre; "> </span>externalGraphic: 'http://pofableau.com/openlayer/calque.png',</font></div><div><font class="Apple-style-span" color="#3c00ff"> <span class="Apple-tab-span" style="white-space: pre; "> </span>graphicHeight: "${H1}",</font></div><div><font class="Apple-style-span" color="#3c00ff"> <span class="Apple-tab-span" style="white-space: pre; "> </span>graphicWidth: "${W1}"</font></div><div><font class="Apple-style-span" color="#3c00ff"> <span class="Apple-tab-span" style="white-space: pre; "> </span>},</font></div><div><font class="Apple-style-span" color="#3c00ff"> <span class="Apple-tab-span" style="white-space: pre; "> </span>{ context: { </font></div><div><font class="Apple-style-span" color="#3c00ff"> <span class="Apple-tab-span" style="white-space: pre; "> </span>H1: function() { return 272/</font><font class="Apple-style-span" color="#f81e1c">map.getScale()</font><font class="Apple-style-span" color="#3c00ff">*2000;},</font></div><div><font class="Apple-style-span" color="#3c00ff"> <span class="Apple-tab-span" style="white-space: pre; "> </span>W1: function() { return 200/</font><font class="Apple-style-span" color="#f81e1c">map.getScale()</font><font class="Apple-style-span" color="#3c00ff">*2000;} <span class="Apple-tab-span" style="white-space: pre; "> </span></font></div><div><font class="Apple-style-span" color="#3c00ff"> <span class="Apple-tab-span" style="white-space: pre; "> </span>} } <span class="Apple-tab-span" style="white-space: pre; "> </span></font></div><div><font class="Apple-style-span" color="#3c00ff"><span class="Apple-tab-span" style="white-space: pre; "> </span>);</font></div><div><font class="Apple-style-span" color="#3c00ff"> </font></div><div><font class="Apple-style-span" color="#3c00ff"> var couche_calque = new OpenLayers.Layer.Vector("Calque", {</font></div><div><font class="Apple-style-span" color="#3c00ff"> styleMap: new OpenLayers.StyleMap(style) }</font></div><div><font class="Apple-style-span" color="#3c00ff"> );</font></div><div><font class="Apple-style-span" color="#3c00ff"> var feature = new OpenLayers.Feature.Vector(</font></div><div><font class="Apple-style-span" color="#3c00ff"> new OpenLayers.Geometry.Point(2.534904,48.387375).transform(</font></div><div><font class="Apple-style-span" color="#3c00ff"> new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984</font></div><div><font class="Apple-style-span" color="#3c00ff"> new OpenLayers.Projection("EPSG:900913") // to Spherical Mercator Projection</font></div><div><font class="Apple-style-span" color="#3c00ff"> <span class="Apple-tab-span" style="white-space: pre; "> </span>),</font></div><div><font class="Apple-style-span" color="#3c00ff"> {some:'data'}</font></div><div><font class="Apple-style-span" color="#3c00ff"> );</font></div><div><font class="Apple-style-span" color="#3c00ff"> couche_calque.addFeatures(feature);</font></div></div><div><font class="Apple-style-span" color="#3c00ff"><br></font></div><div><br></div><div><a href="http://pofableau.com/openlayer/multicouche.html">http://pofableau.com/openlayer/multicouche.html</a></div><div><br></div><div><br></div><div>Many thanks for the help.</div><div><br></div><div>Christian</div><div><font class="Apple-style-span" color="#3c00ff"><br></font></div><div><br></div><div><br><div><div>Le 19 juin 2012 à 16:52, Olivier Terral a écrit :</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Hi Christian,</div><div><br></div><div>You're doing a getZoom() just after created the map and before a zooming function, so the zoom property of the map is logically 0. </div><div><br></div><div>Anyway, I think you use a wrong way of managing scale dependent size. </div><div><br></div><div>Your problem seems similar to this example: <a href="http://dev.openlayers.org/releases/OpenLayers-2.11/examples/label-scale.html">http://dev.openlayers.org/releases/OpenLayers-2.11/examples/label-scale.html</a> .</div><div><br></div><div>Hope this helps.</div><div><br></div><div>Tschuuss</div><div><br></div><div><div>Le 19 juin 2012 à 15:05, christian bleau a écrit :</div><br class="Apple-interchange-newline"><blockquote type="cite">Hi,
i'm just trying to use OL and I meet a problem with map.getZoom
<a href="http://www.pofableau.com/openlayer/multicouche2.html//" target="_top" rel="nofollow" link="external">here's</a> url of my test.
for adapt an size of an OpenLayers.Layer.Vector and an externalGraphic
I call a var zoom with map.getZoom
line: 159 I call var z= map.getZoom(); for change the size of an image
But they don't work "Error: Invalid value for <img> attribute height="Infinity"
If I try to see the z'value Firebug give me "0" .....
<img class="smiley" src="http://n6.nabble.com/images/smiley/smiley_what.gif">
Thank a lot if you have the solution I search it since two days.
<br><hr align="left" width="300">
View this message in context: <a href="http://osgeo-org.1560.n6.nabble.com/pb-with-map-getZoom-tp4982396.html">pb with map.getZoom</a><br>
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-webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Olivier Terral<br></div><br class="Apple-interchange-newline"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span><span><PastedGraphic-1.gif></span></span><span class="Apple-style-span" style="border-collapse: separate; 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