Teejet Fieldware Tool Manual do Utilizador descarregar pdf (Página 34)

www.teejet.com

Fieldware

Tools

FIELD TRANSFER TEMPLATES

As was mentioned earlier, a template contains the information required to transfer an Fieldware le object to

an object in a Shapele, or create an Fieldware le object from an object in a Shapele. To better understand

templates, we must rst understand the data which makes up an Fieldware le or Shapele object. An object

(Polygon, Polyline, Point) is just a shape (one or more positions) with an associated set of attributes or elds. The

shape’s elds specify information about the shape such as its name or ID. The shapes stored in a Fieldware le

and Shapele objects are essentially the same. However, the elds associated with the shapes are different. In

order to transfer the contents of an Fieldware le object to or from a Shapele object we must specify how the

Fieldware le object’s elds are mapped or transferred to the Shapele object’s elds. It is the template which

stores these eld transfers. Fieldware les can contain one or more object types where .shp

les can only be a point, a polyline, or a polygon. To convert a .gmf le to .shp where the .gmf le

contains points and polygons, you would run the conversion twice, once to make the point shapele and again to

make the polygon shape le.

Figure 38: Converting To A Shape File

If you experiment with the Convert dialog, you will notice that different templates are displayed for different

combinations of the source le, destination le, and object type. This is because the elds for each Fieldware

object type of Shapele are unique. The Convert dialog only displays templates which make sense for the

selected les and object type. Under some circumstances, no templates are displayed because none of the

existing templates contain appropriate eld transfers. You may have discovered that the a template named < None

> is often included in the Template list (see (Figure 38)). This template is exactly what its name implies, a template

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 47 48

Sem comentários

Teejet Fieldware Tool Manual do Utilizador Página 34