3.6 migration to 4.2, Lines & Points, Symbols & Queries, GMAP

[Björn Schaffrath]

TCHaddad schrieb:
> Listers,
>
> We have a strange migration issue that we are struggling to solve. In our recent migration of a GMAP-based application from MS 3.6.0 to 4.2.2, we seem to have lost the ability to query POINT and LINE files.
>
> Below are examples from our MAP file of each layer type. All 3 layers draw as expected in 4.2 with the various specified symbols. The first is a POLYGON file and queries on it and all POLYGON files behave as expected. Next is a LINE and then a POINT layer, neither of which return any query results, although they should, and did under 3.6.
>
> I tried drawing the point layer with huge symbols to make sure that I was definitely hitting the item I was trying to Query, but
> it made no difference. Am somewhat stumped as to where to look next as I can't think why POLYGON queries would work but others would not. The only other variable in the below is the SYMBOL type: the first is VECTOR, the second is ELIPSE and the third is PIXMAP.
>
> Any ideas would be great...
>
> Tanya
>
>
> -----------fwd----------->
>
>
> LAYER
>   NAME  localpark
>   GROUP Landmarks
>   METADATA
>     "DESCRIPTION"   "Local Park"
>     "RESULT_FIELDS" "NAME"
>     END
>   STATUS OFF
>   TYPE  POLYGON
>   LABELITEM "Name"
>   TILEINDEX "data\park"
>   MAXSCALE 700000
> CLASS
>  NAME 'Local Park'
>  MAXSCALE 100000
>  TEMPLATE "ttt_query.html"
>   STYLE
>    COLOR 155 205 155
>    SYMBOL 'trans2'
>   END
>  LABEL
>      ANGLE AUTO
>      COLOR  69 139 116
>      SIZE 8
>      TYPE TRUETYPE
>      FONT ARIAL_NB
>      POSITION CC
>     END
>  END
> END
>
> LAYER
>   NAME  ushighway
>  GROUP Transportation
>   METADATA
>       "DESCRIPTION"   "US highway"
>       "RESULT_FIELDS" "NAME"
>   END
>   STATUS OFF
>   TYPE LINE
>   TILEINDEX "data\us_hi"
>   MAXSCALE 3000000
>   CLASS
>     MAXSCALE 100000
>     NAME "US Highway"
>     TEMPLATE "ttt_query.html"
>      STYLE
>       SYMBOL 'circle1'
>       COLOR 54 54 54
>       SIZE 3
>      END
>     OVERLAYSYMBOL 'circle1'
>     OVERLAYCOLOR 25 25 112
>     OVERLAYSIZE 1
>   END
> END
>
>
> LAYER
>   NAME  sample_sites
>   GROUP Sample_Sites
>   METADATA
>     "DESCRIPTION"   "Sample Site"
>     "RESULT_FIELDS" "NAME ID"
>   END
>   STATUS OFF
>   TYPE POINT
>   DATA "data\locations"
>   CLASS
>      NAME "Sample Site"
>      TEMPLATE "ttt_query.html"
>    STYLE
>       SYMBOL 'red_x'
>       SIZE 1
>    END
>   END
> END
>
>
>
> ________________________________________________________________
>
>

Hi Tanya,

I´ve got the same problem a few weeks ago. you have to set
toleranceunits and tolerancesize in your mapfiles (see the docu).

björn