Surface Feature Shape Files
Users with release 2532 or later and a Maintenance Subscription expiration date of September 1, 2015 or later can generate and view shape files that show the areas covered by their surface features. There are two ways to do this. For information on how surface features are applied in coverage studies and path analysis in TAP, click here.
The first option is to utilize a new utility on the main TAP window. Under the Utilities drop-down, select “Surface Feature to Shapefile.”
The Surface Feature to Shapefile utility will load with the surface feature and shapefile names blank.
Click on the surface feature browse button and select a surface feature file. By default, TAP will designate the shape file the same folder, with the same name with “_t7” added.
Click Generate. A window will appear that confirms that the shapefile was created. (If this shape file existed prior to this operation, there will be a window asking if you wish to overwrite the shapefile.)
The second option to create shape files for surfaces features generates a single shape file for all of the surface features associated with a coverage study. For users with release 2532 or later and a Maintenance Subscription expiration date of September 1, 2015 or later, when a coverage study is saved with the “Use Surface Features” option selected and a list of surface feature files included, TAP will create a shape file in the WORK folder that includes all of the surface features in the listed files. If the task number is XXX, the shape file will have the naming convention “O0000XXX_t7.”
Viewing Surface Feature Shapefiles in HDMapper
Open HDMapper. Load the shapefiles for your area and then load the surface feature shape file by clicking on the “Add a new Shapefile layer” button. Browse to the surface feature shape file and select it.
Like all shapefiles in TAP, the appearance of the shapefile can be adjusted by double-clicking on the layer in the pane on the left. The shapefile consists of a set of polygons – each a circle corresponding to an individual surface feature. Thus, when the shape file is loaded, each surface feature appears as a circle.
Each circle polygon within the surface feature shapefile has a set of associated properties. To view a particular property for the different surface features (i.e., height), select the surface feature layer in the pane on the left, then click on the “Set mouse tips for active layer” button.
The properties for the individual surface features include description, height, radius, lat/lon, and type. Select one and Continue. Hover the mouse over a surface feature and the selected property for that surface feature will be shown.
Alternatively, to view all of the information for a particular shapefile, click on the “Click to get info about the active layer” button, and click on the surface feature of interest. The Map Information window will show all of the information for that surface feature.