[maplab-users] Re: Map doesn't appear in the map-extent

[kgrootendorst at baird.com]

Bimal,
I don't know if I can fix your problem but I suggest the following:

1. check your .map file for the following section:
WEB
    IMAGEPATH "C:/web/ms_tmp/"
    IMAGEURL "/ms_tmp/"
END
Make sure that the images are being stored in a proper location and that 
your project is accessing these folders.

2.  In order for a layer to be 'query-able', it needs some code in the 
layer definition in the .map file.
Example:
LAYER 
    NAME "Watersheds"
    STATUS Off
    DATA "./GL_watersheds"
    TYPE POLYGON
    CLASS
      TEMPLATE "ttt"
      STYLE
        SYMBOL 8
          COLOR 0 212 255
        OUTLINECOLOR 0 145 190
      END
    END
  END
In the layer definition above, I've indicated Template "ttt" in the class 
object.  By including this, mapserver recognizes the layer as query-able, 
and will display an attribute table when queried.
The "ttt" is not an actual file.  MapServer will refer to the 
'query.phtml' to see how the attribute table should be displayed, etc.

Hope this helps. 

Kevin
______________________________



Bimal Achary <bimal.achary at gmail.com> 
06/09/2005 02:46 AM
Please respond to
Bimal Achary <bimal.achary at gmail.com>


To
kgrootendorst at baird.com
cc
maplab-users at lists.maptools.org
Subject
Re: Map doesn't appear in the map-extent






Dear Kevin,

             Thanks a ton for the suggestion.In fact the map is now
inside the view extent. I can view it but couldn't able to do any
opeartions.

Like if i'm zooming-in then the map goes out of the extent and
completely disppearing.So is for zoom out and query opeartions.

I can't do any query.

My map shape file Orissa has 30 ploygons as 30districts.This contains
all demographic details of Orissa and opens the database correctly in
ArcView.How can i view the attributes of my shape file as i see in
Arcview.

I hope i'm clear in explaining my query.

Thanks and regards,
Bimal


On 6/9/05, kgrootendorst at baird.com <kgrootendorst at baird.com> wrote:
> Bimal,
> It's critical that you change your extents to match the data you want to 

> show.
> For example, I've built an application that shows all the Great Lakes 
> (Canada-USA) in a 'lat-long' coordinate system.
> In my map file, I've defined the extents as:
> 
> EXTENT -93 38 -74 51  #xmin ymin xmax ymax  NAD 83
> 
> If my shapefile is not in this extent (like a shapefile of India), I 
will 
> not see it.
> 
> Also, you don't have to define a projection in your map file, as long as 

> all your input datasets have the same spatial reference.
> If you plan to reproject on the fly, then you will have to define this 
> parameter.
> 
> Kevin
> ______________________________
> 
> 
> 
> Bimal Achary <bimal.achary at gmail.com> 
> Sent by: maplab-users-bounces at lists.maptools.org
> 06/08/2005 06:58 AM
> Please respond to
> Bimal Achary <bimal.achary at gmail.com>
> 
> 
> To
> maplab-users at lists.maptools.org
> cc
> 
> Subject
> [maplab-users] Map doesn't appear in the map-extent
> 
> 
> 
> 
> 
> 
> Hi All,
> 
>         I'm a new user of MapLab-2.2.I belongs to India.
> 
> I have created a map file named "test.map". where i want to add india
> as a layer.I'm getting every thing correct(Like legend bar,scale
> bar,tools etc) but not getting any view on the map extent.
> 
> My shape file is not in any projection system .This is simply 
> geo-referenced.
> 
> Also i'm not providing any projection system for this.have i to define 
> it??
> 
> I have taken the Map extents as it was in the tutorial map file .Have
> i to change this as per the geo-graphic location(though i don't think
> so).
> 
> Any-thing wrong am i doing??Kindly tell me the procedure to correct it.
> 
> Thanks to all in advance for the supports.
> 
> Regards,
> Bimal Pr.Achary.
> GIS Software Engineer
> UNDP,Orissa
> India
> 
> _______________________________________________
> Maplab-users mailing list
> Maplab-users at lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/maplab-users
> 
> 
>

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