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Steps - How to start ? - Step 8 |
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CLOSING THE SPRING SYSTEM
Before closing your first SPRING session lets recall the concepts just introduced. These
concepts are the most important ones for using the system efficiently.
Because these concepts were gently introduced we don't expect they were learned with this
first pass. When you go over the manuals and tutorials you will see these material
explained with
more details.
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Database - Repository where information and data related to an specific application is stored.
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Project - Working geographical area
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Category - Repository of information and
data of the same type.
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Data Model - It defines the set of categories,
associated to a Data Base, it is required in order to model an application.
In this way, an application data model associated to an agricultural perspectives can be
different from another one, associated to real state.
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IL -
Data from a particular category, that covers a geographical area,
which can be represented as a map.
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Geographical Fields -
Geographical data displayed in an IL, which represent an attribute value at each
point in the terrain. The geographical fields can represent different types of data. In the
SPRING system this is called a model, which is described below:
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Image, each field value represents
a point reflectance in the ground. For example: satellite images.
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Thematic,
each field value represents themes or classes and it is defined based on the desired
application. For example: the soil usage or its declivity (high or low).
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Numerical,
each field value represents a measure from a point in the ground. For example: height,
or the soil Ph value.
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Geographical Objects-
Geographical data that has an identity, a set of attributes, and a geographical localization.
In order to completely define the geographical objects in the SPRING system we have
first to define two different categories: the first category belongs to the
Object model, and describes an object using its attributes and its identifier;
the second category belongs to the Cadastral or Network model, and defines a map
(IL) where the objects are geographically represented.
Closing the SPRING System:
- In the main menu click in File - Exit in order to
close the SPRING System.
When you start the SPRING System next time, the last used data base and
project will be automatically loaded into the system.
VISUALIZING CADASTRAL DATA
STEPS
Topics
See also:
Proceedings of logical sequences in the SPRING System.
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