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| Instructions |
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A data source must be selected from the Datasource dropdown list. All
the queries will be executed on the selected data source.
If the Datasource dropdown list is empty, then go here and add a new data source. Up to three SQL queries, one for each text area, can be entered. Note that each query must select only one column or expression that is of SDO_GEOMETRY type. Do NOT end your SQL query with ';' Each query's results are rendered using the stroking and/or filling color you picked. The results of the first query will be drawn first, followed by those of query 2 and 3. Once a map has been displayed, you can click on the map image to zoom in, out or recenter. Note that each click will result in all of the queries being executed again. Use the Submit button to refresh or reset the map after modifying any of the following:
The result geometries can also be labeled. To do this, the name of a column or expression supplying the label strings must be entered in the corresponding Label Column field, as well as the query's SELECT list.
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To change the size of the result map, simply enter new values (in pixel)
in the map width and height fields. If you want the result map to be
rendered in antialised mode (often results in smoother maps),
check the AA checkbox.
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| Disclaimer: This is a demo intended for quicking viewing of your spatial data. No attempts were made in the code to take advantage of MapViewer's full capabilities and optimize the performance or enhance the look & feel of the generated maps. |
This demos uses Color Picker Script from Flooble.com
