In Hydro GeoAnalyst, you can use the Map Viewer Module to easily map location-based representations of your project data and add external data layers to enrich your map.
To Open the Map Viewer Module:
•Click the Map Viewer  button on the main toolbar
•Select Modules > Map Viewer from the Main Menu
Please Note: some features described in this section, such as adding sample sets as a map layer, data aggregation, and certain callout plot types, are only available in HGA+.
The layout of the Map Viewer is divided into two separate panes and their related controls:
1.The Layer Tree lists map layers that have been added to the map and includes the layer toolbar.
2.The Map Viewport displays visible map layers that are rendered in the (bottom to top) order in the Layer Tree and includes the Map Viewport Toolbar and Status Bar
The Map Viewer also includes the Map toolbar which controls the map view itself.
The Map Toolbar provides controls for managing the map:
Save: saves changes to the current Map View in the Project Tree.
Save as...: saves a copy of the current Map View with a new name in the Project Tree.
Rename map: renames the current Map View.
Refresh layer data: refreshes layers and associated data in the current Map View.
Export Map...: exports the current map to an image or PowerPoint template.
The layer tree organizes map data layers that have been added to the map. A data layer is a specific dataset that contains geographic information in either vector or image/raster format. Layers will be rendered in the map in the order in which they the layer tree. The layer at the bottom of the tree will be rendered first and therefore will be shown as beneath overlapping layers that are higher in the tree. In addition to layer order, the layer tree provides controls on how each map layer will be rendered, including a checkbox that toggles each layers's visibility and a toolbar for additional controls.
Vector datasets represent discrete locations as one or more points, polylines, or polygons. Each point, polyline, or polygon is composed of spatial information (i.e the set of vertices that define the point, polyline, or polygon) and associated attributes (i.e. information about the point, polyline, or polygon). There are two types of supported vector datasets in Hydro GeoAnalyst 12.0:
•Project data-driven datasets are vector datasets that are based on a sample set or station group and are dynamically generated by Hydro GeoAnalyst based on the project database
•Shapefiles are an open source vector-based Geographic Information Systems (GIS) data format developed by ESRI (1998) that includes a set of points, polylines, or polygons. Shapefiles consist of a set of files with the same file name — four of these are required for use in the Map Viewer Module: .shp (spatial data), .shx (spatial index), .dbf (attribute data), and .prj (coordinate reference definition). Shapefiles can be imported from external sources in Hydro GeoAnalyst.
Raster datasets generally represent continuous data over a specified area discretized in a grid of point values. There are two main types of raster datasets supported in the Map Viewer:
•Image formats are a grid based data type covering a defined rectangular area and are commonly used to store/present basemaps and aerial imagery. Hydro GeoAnalyst supports common image types with an associated world file.
•Surfaces are grid-based data type that covers a defined area with each point on the grid representing values of some generally continuous dataset (e.g. elevation, concentration, temperature, etc.). <%APP> supports common raster surface formats:
oSurfer Grid Files (.grd)
oESRI ASCII Grid Files (.asc)
Please Note: the projection of the image or surface must match that of the map. On-the-fly Image reprojection is not currently supported in Hydro GeoAnalyst 12.0.
The Layer Toolbar provides controls for managing and configuring map layers:
Add layer: opens the Add map layer window
Delete layer: removes the layer selected in the Map Tree
New layer: creates a new shapefile layer
Labels: opens the Feature Labeler window
Create Grid File: creates a new surface (grid file) based on an input point layer
Grid Settings: opens the grid settings window for the selected surface
Contour Settings: opens the contour Surfaces settings window for the selected surface
Attributes: opens the Data settings window
Data Layer Settings: opens the Data Layer Settings window (only applies to project data-driven layers)
Callout Settings: opens the Callout settings window for the selected layer (only applies to project data-driven layers)
Export to shapefile: Exports the selected data layer or surface layer to a shapefile
The map viewport is where map layers are displayed and provides controls to interact with the map layers.
The Map Viewport Toolbar provides controls to manipulate the viewport and interact with visible layers:
Pan Tool: allows you to pan around the map view. When this tool is active (framed in a solid blue line), you can:
▪click and drag the mouse pointer on the map to pan around
▪use the mouse wheel up/down to zoom in/out, respectively
Selection Tool: allows you to select one or more features from the active layer. When this tool is active (framed in a solid blue line), you can:
▪click on a feature in the active layer to select it
▪click, drag, and release to select features in the active layer within the resulting rectangle
▪press and hold the <shift> key while performing the above actions to add to the existing selection or
▪press and hold the <control> key while performing the above actions to flip the selection
▪click on the map where no features in the active layer exist to deselect all features in the active layer
Deselect All: deselects all features in the mapview
Zoom in: allows you to zoom in on the map. When this tool is active (framed in a solid blue line), you can:
▪click on the map to zoom in by an approximate factor of 2
▪click, drag, and release to zoom in to the resulting rectangle
Zoom out: allows you to zoom out on the map. When this tool is active (framed in a solid blue line), you can:
▪click on the map to zoom out by an approximate factor of 2
▪click, drag, and release to zoom out based on the scale of the resulting rectangle to the current viewport
Zoom to full extent: zooms the map viewport to the full extent of all layers in the layer tree.
Zoom to selection: zooms the map viewport to the extent of the selected feature(s) in the active layer.
Zoom to Layer: zooms the map viewport to the extent of the active layer.
Move Callout: allows you to move chart and mini-table callout features on the map layer from the active layer. When this tool is active (framed in a solid blue line), you can:
▪click, drag, and release to move features in the active layer (selected items will be highlighted red)
Add Features: allows you to digitize new points, polylines, or polygons for the selected point, polyline, or polygon data layer. (Does not apply to data-driven layers, such as station groups or sample sets.)
▪select the desired layer to be edited before adding features
▪click on the map to digitize features;
▪right-click on map to finalize the shape, the part, or cancel
Delete Features: allows you delete selected features (Does not apply to data-drive layers)
▪select the desired layer to be edited before deleting features
▪hover mouse pointer over a feature to be deleted until they are highlighted red
▪left click to delete selected feature
Draw cross section line: allows you digitize a new cross section
▪select a station group for wells to include in the cross section in the Map Layer tree
▪click along the path of the cross section; the mouse pointer will snap to nearby vertices of visible features
▪right-click on map to finalize the cross section or cancel
Create cross section from line: allows to create a new cross section from the selected line feature in the Map Layer tree
Sync selected samples: toggles whether the map selection is synchronized with sample selections in the rest of Hydro GeoAnalyst (e.g. Sample Picker, Sample List, Plot Collection(s), etc.)
Show scale: toggles the scale bar on the map. If turned on, a scale bar will be shown in the lower right hand corner of the map. The length of the scale bar (in terms of both the map and screen space) will automatically adjust based on the scale of the map on the screen to the nearest single digit value.
The Status bar provides additional controls for the map viewport
Map Scale: displays the current map scale and allows you to set the map scale to one of several common scales
Map Projection: displays the current map projection and allows you to set the map projection.
Coordinates: displays the map coordinates for the location of the mouse pointer on the map if it is located within the viewport