Page Comparison

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Name	type	cardinality	description
label	String	0..1	Label to display in tab
location	String	1..1	Which region to add the view to
projection	String	1..n	The definitions and labels of the projections to display
server	Boolean	0..1	If the transformation should be undertaken on the server, which is the case if the transform will require a grid shift

Example

Code Block

	xml
	xml
linenumbers	true


<view id='com.cohga.html.client.main.projView'>
        <label>Projections</label>
        <location>west</location>
        <projection id="EPSG:3111">28354" label="GDA94/MGA Zone 54"/>
        <projection id="EPSG:28355" label="GDA94/MGA Zone 55"/>
        <projection id="EPSG:28356" label="GDA94/MGA Zone 56"/>
        <projection id="EPSG:20254" label="AGD66/AMG Zone 54"/>
        <projection id="EPSG:20255" label="AGD66/AMG Zone 55"/>
        <projection id="EPSG:20256" label="AGD66/AMG Zone 56"/>
<!--
The following three entries show examples of how a custom transform can be specified.
This does NOT have to be done if you want to use any of these three projections, it's just done here to show you how you could do it.
-->
        <projection id="EPSG:4283" label="GDA94">
                <def>+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs</def>
        <label>VicGrid94</label></projection>
        <projection id="EPSG:3111" label="VicGrid94">
                <def>+proj=lcc +lat_1=-36 +lat_2=-38 +lat_0=-37 +lon_0=145 +x_0=2500000 +y_0=2500000 ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs</def>
        </projection>
        <projection id="EPSG:283543112"> label="GDA94/Geoscience Australia Lamberts"/>
             <label>GDA94 / MGA Zone 54</label>
                <def>+proj=utm +zone=54 +south<def>+proj=lcc +lat_1=-18 +lat_2=-36 +lat_0=0 +lon_0=134 +x_0=0 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs</def>
        </projection>
</view>

Coordinate transformations using the server

Code Block

language	xml
linenumbers	true

<!-- This example shows a client defined in GDA2020 and reporting coordinates in GDA94 <projection-->
<view id="EPSG:28355"'com.cohga.html.client.main.projView'>
        <label>Projections</label>
       <label>GDA94 <location>west</location>
        <!-- The following definitions will do the transformation on the server using the NTV2 transformation from GDA2020 to GDA94 -->
		<projection id="EPSG:28354" label="GDA94/MGA Zone 55</label>
   54" server="true"/>
        <projection id="EPSG:28355" label="GDA94/MGA Zone 55" server="true"/>
        <projection id="EPSG:28356" label="GDA94/MGA Zone 56" <def>+proj=utm +zone=55 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs</def>
        </projection>
</view>
server="true"/>
		<projection id="EPSG:3111" label="GDA94/VicGrid94" server="true"/>
		<projection id="EPSG:4283" label="GDA94" server="true"/>
		
		<!-- The following two definitions will do the transformation in the browser as the map datum is already in GDA2020 -->
		<projection id="EPSG:7844" label="GDA2020"/>
		<projection id="EPSG:7855" label="GDA2020/MGA Zone 55"/>
</view>

Versions Compared

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Key

Example