>
> I am not going to use SQLserver spaital . I am using normal SQLserver 2005.
> If am not wrong, I am going to store only coardiantes in the
> database(Longitude and lattitudes) and I will fetch the coardinate when
> ever I required and draw it on to the map, It is just an extra layer- If it
> is not possible then  I will try to use spaital.
>

It is more a question of if we can choose something uDig supports (and udig
tends to support spatial things like oracle-spatial, db2 and postgis). Or if
you are going to handle working with the databsae yourself (using jdbc
calls). Sounds like you are using jdbc calls which is fine.

>
> I am not going to create thousands of gates(mostly around 90)
>

Sounds fine.

>
> I will finish the basic things first, I created  a plugin for distance tool
> (examle in tutorial), It does the distance calculation and showing the
> values  in to the bar, But I can not see any line while drawing (Is this
> is the result of this class?).
>

Have a look in the uDig source code at the distance tool included with the
application; it is a bit more complete then the tutorial example (and
includes visual feedback in terms of a line). The class in svn is here:
-
http://svn.refractions.net/udig/udig/trunk/plugins/net.refractions.udig.tool.info/src/net/refractions/udig/tool/info/DistanceTool.java



> Lets come to MapGraphic and Coordinate classes(Main things)
> What does coordinate class does, it has got 3 methods
> mocusepressed,1,2,3,Mouse released.
> MapGraphic class has got the methods like draw1,draw2...
>

You are correct; the different draw methods are slightly improved on each
other:
- draw just draws the dots on the screen (in the position the user clicked)
(so as you pan around the dots stay in the same position on the window)
- draw2 draws the dots as lat/lon DefaultGeoGraphicCRS.WGS84 coordintes (so
as you pan around the dots say on the map).

>
> I tried to make use of this classes that means I just added a plugin using
> this classes
> I am able to place the points on block board, but I couldn't draw the lines
> ( I have to try again)
>

You are making progress :-)

>
> how i can make use of this classes? especially MapGraphic..
>

Implement your own draw method (that draws a shape rather than a line).

>
> Plese let me complete the basic things with your help..
>

Cheers,
Jody
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