[OpenLayers-Users] OpenLayers do not detect Proj4js

[Juanma M. R.]

Hi,

Thank you Robert. I already included a file with the CRS like that:

<script TYPE="text/javascript" src="proj4js-2.1.0/lib/proj4.js"></script>
<script TYPE="text/javascript"
src="proj4js-2.1.0/lib/spider_srs.js"></script>
<script TYPE="text/javascript" src="OpenLayers-2.10/OpenLayers.js"></script>

with one line for each CRS like the ones from spatialreference.org:

Proj4js.defs["EPSG:900913"] = "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0
+lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext
 +no_defs";
Proj4js.defs["EPSG:4230"] = "+proj=longlat +ellps=intl +no_defs";
...

and it thorughs the error:

"ReferenceError: Proj4js is not defined"

The object Proj4js is not defined but the proj4.js file gives no error. Am
I using a wrong object name for including the defs strings?

Cheers,

Juan Manuel Moreno Rivera.

Sección de Teledetección y SIG / Remote Sensing & GIS group

Instituto de Desarrollo Regional / Institute for Regional Development

Universidad de Castilla-La Mancha / University of Castilla-La Mancha

Tlf: +34 967599200 (Ext: 2623)
http://www.teledeteccionysig.es/


2014-02-07 1:35 GMT+01:00 Robert Sanson <Robert.Sanson at asurequality.com>:

> Hi Juan
>
> You are missing the .js file name in the first <script></script> block.
>
> Here is some code that works for me:
>
> <script src="lib/proj4js-compressed.js"></script>
> <script src="lib/EPSG2193.js"></script>
> <script src="lib/EPSG4326.js"></script>
> <script src="OpenLayers.js"></script>
> <script type="text/javascript">
> var xys = map.getLonLatFromViewPortPx(e.xy);
>       easting = xys.lon;
>       northing = xys.lat;
>        var tempgeom = new OpenLayers.Geometry.Point(easting,northing);
>       //now re-projection to WGS84
>       var src = new OpenLayers.Projection('EPSG:2193');
>       var dest = new OpenLayers.Projection('EPSG:4326');
>       OpenLayers.Projection.transform(tempgeom, src, dest);
>
> regards,
>
> Robert
>
> >>> "Juanma M. R." <juanma.mr at gmail.com> 7/02/2014 3:23 a.m. >>>
> Dear list,
>
> I am trying to reproject in client side using OpenLAyers but I have
> problems to find how to make OpenLayers detecting Proj4js. The proj
>
> The source code for including OpenLayers and Proj4js is:
>
> <script TYPE="text/javascript" src="proj4js-2.1.0/dist/"></script>
> > <script TYPE="text/javascript"
> > src="OpenLayers-2.10/OpenLayers.js"></script>
>
>
> The source code for reprojecting is:
>
> olb = new OpenLayers.Bounds(b.minx,b.miny,b.maxx,b.maxy);
>
> var srcprj = new OpenLayers.Projection("EPSG:23030");
> >
> var destprj = new OpenLayers.Projection("EPSG:900913"); //A definition of
> >
>
> newOlb = olb.transform(srcprj, destprj);
>
>
> The OpenLayers.Projection method creates a Projection object but the proj
> instance, the property of Projection type, is null in both cases. So I
> imagine it is not capable of creating it. I have the documentation but
> maybe I am missing something so obvious ... the final result is that the
> coordinates of the new bounds are a copy of the original ones.
>
> The other question is how to declare the "EPSG:900913". I have included a
> file with the Proj4js.defs for each EPSG code to be included but when I add
> the line to include this .js content it teels me that Proj4js is not an
> object.
>
> So, I am doing something wrong integrating the proj4js and OpenLayers.
> Could anyone help me? Just pointing to the right docummentation to
> configure OpenLayers with Proj4js (I have already tried copying proj4js in
> the same folder as OpenLayers.js but t didn't work).
>
> Cheers,
> Juan Manuel Moreno Rivera.
>
>
>
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