Eléctrica Box Level 19

GIS basics in the planning - Exercise 3

Das Programm ArcGis bietet zahlreiche Abfrage- und Geoanalysemethoden zur Datenbearbeitung und -anpassung. Die dritte Übung sollte den Studenten nun die nötige Einarbeitung und Praxis vermitteln.
Auf Grundlage der Geodaten der Landkreise und der Naturschutzgebiete von Rheinland Pfalz sollten 8 Layer und eine Tabelle mit verschiedenen Inhalten erzeugt werden.
Im Anschluss werden diese Inhalte samt der Vorgehensweise dargestellt.

Layer_1 - Erzeugung eines Layers mit den Grenzen des Landkreises und der Stadt Kaiserslautern mit Hilfe einer Abfrage:
Hierzu wird die Funktion " Select by attributes is applied. As both the district and the city bear the same name, you can search for just those objects have the "name" Kaiserslautern have. It must be like in the example can be seen, first the layer "LK - Limits "will be selected and pasted into the command line the following contents: " NAME "= 'Kaiserslautern'

Then, to generate from such a selection a layer then the command." Create layer from selected Features "are used. This is after right-clicking on the" LK-limits "layer under" Selection "section.

Contents:

all objects from the Layer "LK-limits" with the name of Kaiserslautern, so city and county
the objects have the same information as well as at the LK-limits "Layer

Layer_2 - combining the objects of Layer_1 into a single object by using Geo Analyses Methods: Can connect to
At 2 located on a layer objects with each other are the "Dissolve " are used. This is to be found in the "ArcToolbox" under the "Data Management Tools" at "Generalization". In this case, the "Input Field" Layer_1 be selected and under the "Dissolve Fields" to be that property is to be selected on the basis of which the objects connected, which is in the present work, "name".

Contents:

an object that corresponds to the size of the circle
there are only about the name and type of the object before

Layer_3 - selection of all natural protection areas, with Layer_1 overlap (query ):
query order overlaps the "Select by Location " is used. It will therefore see all objects which are in the nature reserve, which is why this is so selected in the top must, while in the area by the county and the city of Kaiserslautern are localized. To ask this context, the function "intersect" and the concern layer selected in this case "Layer_1" are.

Contents:

all nature reserves located within the county and the city is Kaiserslautern
this represented only the information of the layer over the protected areas, which lost the LK-limits

Layer_4 - Creation of buffer areas with 300m to the nature reserves of Layer_3 (Geo Analyses):
To create a buffer, As the name suggests, the operating under the "Analysis Tools" and "Proximity" located Tool buffer. Here, only the desired layers have been set (ie: Layer_3) and then the size and unity of the desired buffer zone under "Linear Unit given (ie 300 m).

Content:

same content as on Layer_3
there are only the buffer areas added to the protected areas

Layer_5 - production of a layer with the boundaries of the city of Kaiserslautern (query):
The creation of this layer is on the selben Weg wie auch schon beim ersten Layer. Nur sollte hier als Ausgangslayer "Layer_1" gewählt werden. Die Auswahl soll anschließend alle Objekte erfassen die die "Objektart1" "Stadt Kaiserslautern" aufweisen. Dies wird über folgenden Abfrageausdruck erreicht: "Objektart1" = 'Stadt Kaiserslautern'

Inhalte:

enthält ausschließlich das Polygon welches die Stadt Kaiserslautern darstellt
beinhaltet alle auch im "LK- Grenzen" Layer auftauchenden Informationen

Layer_6a - Ausschneiden von Layer_4 mit Hilfe von Layer_5 (Geoanalyse):
Zum Auschneiden wird die sogenannte " Clip "- function used, which, under the" "is related to As." Analysis Tools "and under" Extract input feature here is "Layer_4" and "clip feature is" Layer_5 define "

website. :

all within the area of the city of Kaiserslautern lying nature reserves represents
contains the same information as well as the nature reserve-Layer

Layer_6b - intersection of Layer_4 and Layer_5 (Geo Analyses):
is an intersection with using the tool " Intersect" (under "Analysis Tools" / overlay ") made. This requires both layers of the" Input . Feature insert "

Contents:

all within the area of the city includes Kaiserslautern lying nature reserves represents
both the information of natural protected areas as well as county-Layer

Layer_6c - Association of Layer_4 and Layer_5 (Geo Analyses) and calculation of areas: The Final
Association, which is also listed under "Analysis Tools" and "overlay" is done via the "Union " There have only the two layers in the ". selected input features. In addition, the surfaces of the objects resulting calculated be. For this, the attribute table of Layer_6c be opened and the column "ha" with the right mouse button can be selected. With the where-to-find option "Calculate Geometry" can automatically calculate the areas. It is merely the "property" "area" set and in this case, "determined units", "hectares" are.

Content: Make

are all nature reserves in the county, and also the limits of the city of Kaiserslautern
territories situated within the boundaries of the city, include the information from conservation area and LK boundaries layer, with the remaining at least that of Naturschutzgebietsalayers have

Sum_Layer_6c (Tabelle) - Die Tabelle soll nur einen Datensatz (nur eine Zeile) je Naturschutzgebiet und folgenden Attribute besitzen: Gebietsname, Gebietsnummer, Gebietsfläche:
Um eine solche Tabelle zu erstellen muss zunächst die Attributtabelle des Layers geöffnet werden. Anschließend kann über einen rechten Mausklick auf die Spalte "Gebietsnum" die Funktion " Summarize " gestartet werden. Im oberen Feld muss nun eine der 3 geforderten Objekteigenschaften aktiviert werden, was in diesem Fall die Gebietsnummer ist. Im zweiten Feld müssen dann die beiden verbleibenden Objekteigenschaften gewählt werden. Wobei zu beachten ist, dass beim Gebietsname der Auswahlpunkt is "first" and the sum ("Sum") of the area (hectares) identified.