[mapserver-dev] variable substitution for projection

[Zach Aller]

Awesome thanks much that work i even tried that just for some reason didn't
think to add the " in i just had

map.layer[layername]=PROJECTION+init=epsg:4326+END

Thank You guys for all the help

On Wed, Dec 21, 2011 at 10:10 PM, Stephen Woodbridge <
woodbri at swoodbridge.com> wrote:

> On 12/21/2011 9:38 PM, Zach Aller wrote:
>
>> Yup thats exactly what is going on we have images from different source
>> that have different projections and so we have a little program that
>> will get called to figure out the projection of the geotiff then with we
>> need to use mapserver for some processing and there for need to change
>> the projection of the said layer.
>>
>> Also this method did not seem to work
>>
>> map.layer[layername]=**PROJECTION+EPSG:3158+END
>>
>
> this needs to be:
>
>   map.layer[layername]=**PROJECTION+"init=epsg:4326"+**END
>
> And you may nee to encode " and = chars between PROJECTION ... END
>
>  got this error
>>
>> loadProjection(): Unknown identifier. Parsing error near (:):(line 1)
>>
>>
>> On Wed, Dec 21, 2011 at 7:55 PM, Stephen Woodbridge
>> <woodbri at swoodbridge.com <mailto:woodbri at swoodbridge.**com<woodbri at swoodbridge.com>>>
>> wrote:
>>
>>    Zach,
>>
>>    Why would you want to change the projection of a layer?
>>
>>    The projection of a layer should be constant as it defines the
>>    projection of the data that is in that layer.
>>
>>    So unless you are doing something like changing the data source AND
>>    also needing to then change the projection because the new data is
>>    in another projection, then I can not imagine that you are going to
>>    get any useful results doing this.
>>
>>    -Steve W
>>
>>
>>    On 12/21/2011 5:23 PM, Zach Aller wrote:
>>
>>        that seem's to have done the trick sort of now i am just
>>        wondering if i
>>        can set that for a specific layer i tried
>>
>>        map.layer[layername]. projection
>>
>>        but that did not seem to work. Setting the map projection will
>>        probably
>>        be fine for our project at least for now.
>>
>>        On Wed, Dec 21, 2011 at 11:04 AM, Lime, Steve D (DNR)
>>        <Steve.Lime at state.mn.us <mailto:Steve.Lime at state.mn.us**>
>>        <mailto:Steve.Lime at state.mn.us <mailto:Steve.Lime at state.mn.us**>
>>
>>         >> wrote:
>>
>>            Zach: You should be able to change the projection through
>>        the URL
>>            like so:
>>
>>               …&map.projection=EPSG:3158&…
>>
>>            No need to runtime subs…
>>
>>            Steve
>>
>>            *From:*mapserver-dev-bounces@ lists.osgeo.org
>>        <mailto:mapserver-dev-bounces@**lists.osgeo.org<mapserver-dev-bounces at lists.osgeo.org>
>> >
>>        <mailto:mapserver-dev-bounces@ lists.osgeo.org
>>        <mailto:mapserver-dev-bounces@**lists.osgeo.org<mapserver-dev-bounces at lists.osgeo.org>
>> >>
>>            [mailto:mapserver-dev-bounces@ lists.osgeo.org
>>        <mailto:mapserver-dev-bounces@**lists.osgeo.org<mapserver-dev-bounces at lists.osgeo.org>
>> >
>>        <mailto:mapserver-dev-bounces@ lists.osgeo.org
>>
>>        <mailto:mapserver-dev-bounces@**lists.osgeo.org<mapserver-dev-bounces at lists.osgeo.org>>>]
>> *On Behalf Of *Zach
>>            Aller
>>            *Sent:* Tuesday, December 20, 2011 5:28 PM
>>            *To:* mapserver-dev at lists.osgeo.org
>>        <mailto:mapserver-dev at lists.**osgeo.org<mapserver-dev at lists.osgeo.org>
>> >
>>        <mailto:mapserver-dev at lists. osgeo.org
>>
>>        <mailto:mapserver-dev at lists.**osgeo.org<mapserver-dev at lists.osgeo.org>
>> >>
>>            *Subject:* [mapserver-dev] variable substitution for projection
>>
>>
>>            ok i am working with mapserver and a nodejs project and so i am
>>            calling mapserver like so.
>>
>>            mapserv -nh
>>        "/getPreviewImg.map&mode=map& mapext='+req.params.extent+'&
>>        filename='+req.params.imgname+ '&projection=3158"
>>
>>            the issue is that mapserver dose not support projection
>>        based run
>>            time substitution and so i was wondering if that is possible
>>        to add
>>            and how hard it would be (maybe i could to it myself etc if
>>        pointed
>>            in right direction because i have no experience with
>>        mapserver's src)
>>
>>            map file example thats what i want to replace
>>
>>            PROJECTION
>>        "init=epsg:%projection%"
>>            END
>>
>>            or perhaps even this then i could build what ever
>>
>>            PROJECTION
>>                 %projection%
>>            END
>>
>>
>>
>>
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