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n4ce Code Table, Features and Text Macros
Detail shown in the graphics Window is derived from the Feature Code Table, as shown below. Features are made up of a combination of Points, Lines, Symbols, Text, Shapes, Height Annotation, Number Annotation and Code Annotation
Feature coding is described in three parts, namely <Code Prefix><String number>,<Comma Code>.
An example could be KB,C which is a curve fitted kerb line that is made up of points and a line linking these points together. Other codes may require additional attributes like Dimensions. Another example of this would be a 2 point rectangle, where one side is defined by two points and the width by a Dimension W=0.95. Note there are three types of Shape (Rectangle, Circle and Triangle) and different ways in which they can be defined.
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Once you are in graphics you have access to the Query Icon bar as shown above.
Query Point is particularly useful since it can be used as a mini editor changing, Point Number, Code or Coordinates. The Attribute tabs allow access to Dimensions, Comma Codes and Remarks. |
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Comma Codes are used to control point heights and line features. For eample ,X will flag a point not to be modelled whilst ,C will flag a point on a line feature to be curved. ,N negates the need to use string numbers to identify new strings. |
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Dimensions are used where sizes are required. For example the width of a line, spread of a tree symbol or radius of shape. These are identified via a Dimension button in the Code Table and are accessed in the Fields tab, as shown below.
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The definition of a rectangle shape, a width W may be required, but what happens if this Dimension is missing?
n4ce provides for this scenario by introducing a default defined within the Fields tab, shown opposite. There is also a Retain Dimension in the above Attributes, which will keep the last defined value.
Whilst there are a number of fixed Dimensions, a user can introduce their own, as shown below for the definition of a tree. |
In the example of the tree definition, shown opposite the Dimensions of the tree are held as Typ, S, R and Ht. These control the size of the symbol (S) and radius of the shape (R). The text that appears on the screen is controlled by a Text Macro, as shown below:
%Typ%nSpread %.2S%nTrunk %.2R%nHeight %.1Ht%REM |
| Dimensions are VERY powerful and can be used to display all sorts of information, including Remarks. Hard coded Dimensions include PX, PY, PZ, PC, PN and REM, which are coordinates, code, number and remarks of the point. For example if you wish to show the coordinates alongside a coded point or station, the following could be used:
E=%.2PX%nN=%.2PY%nH=%.2PZ%
Alternatively, you can apply Text Macros to perform simple calculations. For example, you may have measured the depth to a manhole and wish to display the cover level and invert level. The following may be applied:
CL=%.3PZ%nIL=%.3(PZ-H)%
The .2 and .3 in the above Text Macros are the number of displayed decimal places. n indicated start a new line and the dimensions are enclosed by %%.
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