TUTORIAL - Locations and Mapping - ESdat

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Function Tutorial - Locations and MappingSelect the ‘Area’ tab, and the ‘Outline’ Sub-tab.Change the Color to Red and click ‘OK’. The outline of the areas in the layer will beshown in red.Try changing some of the other options here and note the changes.For more information on base maps, seehttp://www.esdat.net/esdathelp/index.html?adding_basemaps.htmBasemap Coordinate SystemsIf the coordinate system of the data in ESdat isn’t specified, then all GIS Layers must be in thesame coordinate system as the ESdat data. However, ESdat has the ability to overlay data andlayers in different coordinate systems.Imagery BasemapsAll imagery basemaps (ie arial photographs or satellite imagery) need to be georeferencedbefore it can be properly viewed in ESdat.Some imagery formats contain the co-ordinate system within the file (ie ecw’s) and othersrequire a world file (ie tiffs). If a co-ordinate system isn’t specified the imagery will need to begeo-referenced using a geo-referencing package, or one of the mainstream GIS applications.Whenever possible ESdat will automatically detect the co-ordinate system, requiring no useraction other than adding the layer.EarthScience Information Systems Pty LtdEmail: Support@ESDAT.com Web: www.esdat.net Page 7
Vector BasemapsFunction Tutorial - Locations and MappingVector basemaps (ie lines such as Autocad dxf files) may need to have their co-ordinate systemspecified in ESdat.Exercise 5: Assigning a coordinate system to a vector basemapTo assign a coordinate system to a vector basemap, do the following:Click on the ‘Map’ panel.On the right side of the map double click on the ‘test’ layer we previously created.Click the ‘Layer’ Tab in the dialogue box that opens, and then on the ‘Select’ button.A ‘Coordinate System’ dialogue box will open (the screenshot below shows the outcomeof these steps, from right to left).Select WGS84 (ie Latitude/Longitude)Click OK to close all forms.Adding Web Mapping Service LayersBecause we have indicated the co-ordinate system of the data in ESdat we can integrate withpublically available basemaps exposed by WMS (Web Mapping Service).EarthScience Information Systems Pty LtdEmail: Support@ESDAT.com Web: www.esdat.net Page 8
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TUTORIAL - Locations and Mapping - ESdat

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