How to:
  Display layer information
  Display list of layers
  Add more data from the drop down list
  Update layer visibility
  Classify/Change symbology of a layer
  Identify map features
  Select map features by line/polygon
  Use the query builder
  Generate a print page
  Zoom to a predefined extent or map scale
  Zoom to a user-defined point

Display layer information
You can display general information about map layers. In the table of contents, click on the ? located on the right of the layer name you want to get information for. In the frame at the right of the map display, the following data will be listed:

1. Layer name
2. Layer type (vector or raster)
3. Layer's Extent and Scale range
4. Metadata download site
5. Data download site
6. List of field name, type, and size (if vector layer)

Display list of layers
To see the list of layers available in each map, click the Layer List in the table of contents. As result, a new window will open, listing names, data source and map scale at which the layer will be visible. Some data layers are scale-dependent, which means that they will only display in a specified range of map scale.

Add more data from the drop down list
To add more datasets, select from the drop down list of add more data under the table of contents.

1. The data is divided into USGS sample locations, administartive, benthic, hydrology, seagrass, habitat, landuse, images, potentiometric maps, and water quality modeling.
2. Each catagory is further divided based on the year or other criteria. Select the dataset to add to the table of contents' list of layers.
3. Some catagories like images, seagrass, landuse, and habitat show up only at certain scale range. Also, some data layers are scale-dependent, which means that they will only show in the select drop-down list in a specified range of map scale. So zoom to the layer's scale range, to be able to add to the table of contents. The layer's scale range can be known by displaying its layer information.
4. To show it on the map, update the visibility of the layer.

Update layer visibility
To change the visibility of one or more layers, you need to

1. click on the check box(es) in the table of contents.
   
2. click on the Update Map button.

Classify/Change symbology of a layer
To change the symbology or classify layers, you need to

1. Make the layer active.
2. Click on the tool in the tool bar.
   
3. To change the symbology, select symbol type OneSymbol and the remaining attributes like color, width etc.
4. To classify by layer's field values, select Graduated Symbol and the field to classify based on the range of size and the range of colors.
5. Hit the button Apply to show the changes.
6. Hit the button Default to go back to the original symbology of the layer.

Identify map features
With vector layers, you can get information about map features stored in the table of attributes.

1. Click the Identify button on the tool bar.
   
2. Move the pointer over the map feature you want to identify and click it.

The features in the active layer under the pointer will be identified.
Before identifying a map feature, remember to set the active layer, which is the layer you want to retrieve feature information from. You can set the active layer using the boxes in the table of contents. An active layer is also required for tasks like querying map attributes or selecting map features by lines or polygons.

Select map features by line or polygon
If you want to discover spatial relationships which answer questions such as "What intersects?" click on the Sel Line button. A form will open in the project links frame. This form contains all controls you need to select map features that intersect a line or a polygon. After you click on the selection button, you will:

1. define the active layer, which allows the system to know the layer from which to select features from;
   
2. apply the cursor on the map display to define the first point;
   
3. reapply the cursor on the map display to define the second point, and so on.
   
   Note that you need to wait between one point and the other until you see a red line drawn between them.
   
   The form in the project links frame allows you to
   
   

   1. start a new line or polygon if you want to;
   2. remove the last point from the drawing line or polygon;
   3. define the last point and execute the selection.
   
   

   After you close a line, the selected features will highlight, and the attributes will be listed in an external window.
   
   
4. Click on the Clear button in the IMS tool bar to remove the selection.
   
   

Use the query builder
Often, just looking at a map is not enough; you must also query it according to feature locations and attributes to solve problems. The Tampa Bay Interactive Map allows you to query a layer's attribute table by using a query string. Follow the next steps:

1. Make active the layer to query by clicking on the box in the table of contents.
2. Click on the Query button in the IMS tool bar. The query builder will be displayed in the project links frame (right section of the map display). Type the query string in the expression box, or build it by
   
   1. selecting one name in the field list;
   2. clicking an operator to add it to the expression;
   3. selecting a value from the list of field values after the get values option is selected.
   
   Note that no more than 500 records can be analyzed to get unique field values. This limit is necessary to avoid long waits for the result. Also note that the field value is case sensitive; therefore, there must be perfect match between string value in the expression and field value in the table.
   
   
3. Finally, execute the query.

You may have to wait a bit for the result upon the number of retrieved features. If features have been found, the list of selected records will be displayed in a new window. If you click on the record ID column (underlined blue number), you will zoom the map to that specific feature.

Generate a print page
The Tampa Bay IMS allows you to create a print page based on a predefined template. It contains a title, map, overview map, legend, and logos.

1. Click on the Print button in the IMS tool bar and you will open the print form in the project links frame. This form allows you to select a predefined title or type a custom title in the text box.

Note that ArcIMS prints from the map file rather than by capturing your screen. The extent that prints may not exactly match what your screen displays.

Zoom to a predefined extent or map scale
During an IMS session, it is very likely that you want to quickly zoom the map to the full extent, to one of the study areas, or to a predefined map scale. The Tampa Bay IMS's advanced zoom options allows you to perform those tasks.

1. Click on the advanced zoom options link. A new form will open in the project links frame.
   It allows you to
   
   

   1. zoom to a map extent;
   2. zoom the center map to a defined map scale;
   3. zoom the map to a defined point.
   
   

2. Click on the links to zoom the map to a predefined map extent, such as Tampa Bay, Gandy Bridge, Alafia River, or Terra Ceia Aquatic Preserve
   
   
3. Click on the links to zoom the center map to predefined scales.

Zoom to a user-defined point
If you want to zoom the map to a specific point, open the advanced zoom options form.

a) Point from map:

1. click on the Get Coords from Map link;
   
2. apply the pointer on the map to get a point;
   
3. select or type in the text box the scale you want to zoom to;
   
4. click on the GO! button to execute the selections.
   
   

b) Point from numeric coordinates:

1. Select or type in the text box the scale you want to zoom to;
   
2. select the map unit among the three options:
   

   a) Meters (UTM);
   b) decimal degrees (Geographic DD);
   c) degrees, minutes, seconds (Geographic DMS).

3. type the X and Y, or or longitude and latitude in the text boxes;
   
4. click on the GO! button to execute the selections.