[OpenLayers-Users] vector layer reprojection

[Giuseppe Falcone]

Hi,

I have implemented a function that reproject vector layer when I change map
SR. The feature are now redrawed correctly.
But now there is another problem:
1 - light on vector layer
2 - change mapSR (sr1) -> layer is reprojected
3 - light off vector layer
4 - change map SR (sr2 - different from previous)
5 - light on vector layer -> layer not appears onto map (I presume because
layer have feature stored in sr1 system and the map is in sr2 system)

How can I fix this problem? I have to reproject features also on set vector
layer visibility?
Thanks.

Giuseppe




2016-08-24 22:37 GMT+02:00 Robert Sanson <Robert.Sanson at asurequality.com>:

> HI
>
>
> Yes, I believe the approach is to create a new layer and transform the
> features from the old layer and add them one by one into the new layer.
>
>
>
> Regards,
>
>
>
> Robert
>
>
>
> *From:* Users [mailto:openlayers-users-bounces at lists.osgeo.org] *On
> Behalf Of *Giuseppe Falcone
> *Sent:* Thursday, 25 August 2016 12:52 a.m.
> *To:* pra shant <prashu84k at gmail.com>
> *Cc:* openlayers-users at lists.osgeo.org
> *Subject:* Re: [OpenLayers-Users] vector layer reprojection
>
>
>
> Hi,
>
>
>
> thanks for the response.
>
> The situation is a bit different.
>
>
>
> The feature are already loaded into layer and visible onto map. Now I have
> a combo control by which I modified SR onto map.
>
> With this operation raster layers are reprojected correctly.
>
> For raster layers what I have to do? I have to remove and re-add features
> on vector layer?
>
>
>
> Thanks.
>
>
>
> Giuseppe
>
>
>
> 2016-08-24 14:13 GMT+02:00 pra shant <prashu84k at gmail.com>:
>
> Hi,
>
>
>
> Try to transform all features using below code and then add features to
> vector layer.
>
> Initialize and add all layers while map loading and then perform
> transformation operation on every feature.
>
>
>
> geometry.transform(4326,3857);
>
> feature.setGeometry(geometry);
>
>
>
> vectorlayer.add(feature);
>
>
>
> Regards,
>
> Prashant Kirpan
>
>
>
> On Wed, Aug 24, 2016 at 4:19 PM, Giuseppe Falcone <
> falcone.giuseppe at gmail.com> wrote:
>
> Hi all,
>
>
>
> I have a problem with vector layer reprojection.
>
> I have implemented a map viewer where is possible to change reference
> system.
>
>
>
> If I load vector layer after that I have changed SR, this is correctly
> loaded. If i load vector layer and then I change SR, the raster layers are
> reprojected correctly, but the vector layer disappear.
>
> Any idea?
>
>
>
> Thanks a lot.
>
>
>
> Giuseppe
>
>
>
>
>
>
>
>
>
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