Re: [OpenMap Users] dbf files content to display according to the shape file

Molato badr wrote:

>
>
>--
>Molato Badr
>
>Hi again,
>I was not clear in my last e-mail so i will reformulate my question.
>I would like to label the roads and the streets that I displayed using the
>shape files. To do this I would like to use my dbf files. -It was already
>done using mapObject from ESRI - So the names are all stored in these dbf
>files but I did not find out how to display them in the mapBean component
>(according to the shape files) without assigning each time the coordinates
>of the city to the label.
> Thank you
>
>
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Hi,

This is how I did it:

- I use an EsriPlugin: convenient because the content of the .dbf file
is loaded
- I wrote a class that extends the AbstractLocationHandler in which the
"createData" member computes the lat/lon from the EsriGraphicList:

        // find lat/long coords for the object
        omGraphic = Layer.getEsriGraphicList().getOMGraphicAt(index);
        EsriGraphic eg = (EsriGraphic) omGraphic;
        float ll[] = eg.getExtents();
        float lat = (ll[0]+ll[2])/2; // Works for points and links. For
that latest, label position is at the centre of it...
        float lon = (ll[1]+ll[3])/2;

       // Create label and put it in the QuadTree
       loc = new BasicLocation(lat, lon, label, null);
       loc.setLocationHandler(this);
       qt.put(lat, lon, loc);

Hope this helps

-- 
Prof Dr Bart Jourquin
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Fax. : +32 65 315691
http://message.fucam.ac.be/~jourquin
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