Gloryholeon Long Island

elective GIS - Exercise III

task
Based on the available materials using appropriate queries and analysis, the following layers and tables are created. Pay special attention to the right function selection and rename your results according to the task.

first Layer_1:
production of a layer with the boundaries of the district and the city of Kaiserslautern (attribute-based query)

the function "Selection by Attributes" are the layer "LK-limits" all selected objects in the attribute table under Name be conducted "with" Kaiserslautern ". By right-clicking on it, "LK-limits" can the "Data" -> "Export Data" a new layer with the county and the city of Kaiserslautern are created.


second Layer_2:
combining the objects of Layer_1 into a single object (Geo Analyses)

The Dissolve function (ArcToolbox -> Data Management Tools ") can be joined together, the two parties. The Dissolve tool is chosen first from the previously created layer. As "Dissolve Fields" should be the "name" are chosen because of this See by the two surfaces contains the same content. As the results was generated Layer 2,


third Layer_3:
selection all protected areas which overlap with Layer_1 (location-related query, 'that: intersect')

The "Select by Location" allows you to select plots that fall within a certain range. For this, the protected areas layer in the upper part of the window is selected. The desired function ("that: intersect) and the Layer_1 can be selected in the bottom half of the window.
using the "Export Data" function can be created below the Layer_3.


4th Layer_4:
creating buffer areas with 300m to the nature reserves of Layer_3 (Geo Analyses)

The ArcToolbox offers the possibility to the nature reserves of Layer 3, a buffer zone to calculate. As "Input Feature" he is elected Layer 3, which contains all the nature reserves enriches in Kaiserslautern. Under "Qutput feature class" can be selected the name under which the new layer is to be saved. Under "Distance", the desired distance of 300m be set.


5th Layer_5:
production of a layer with the boundaries of the city of Kaiserslautern (search)

_5 layer can similarly be created as Layer_1. Around the city elects to choose one from Kaiserslautern Layer_1 on "Selection by attribute" function Objects with "Objektart1" = "circle-free city". The selection can wiedr as new layers are stored.


6th Layer_6a:
cutting out Layer_4 using Layer_5 (Geo Analyses)

The nature reserves in the city of Kaiserslautern area are to be stored in a new layer. For this, the "Clip" function of "ArcToolbox" is used. As "Input Features" of Layer_4 is selected with the reserves. As a "clip" feature of the previously generated Layer_5 is chosen. The name of the generating layer can be in the "output feature class' concerns (Layer_6a).


7th Layer_6b:
overlap of Layer_4 and Layer_5 (Geo Analyses)

The "Intersect" is set just like the "Clip" function. The name of the generated layer should be chosen in this case as "Layer_6b.


8th Layer_6c:
Association of Layer_4 and Layer_5 (Geo Analyses)

With the "Union" and the settings of step 6 and 7 can be generated Layer_6c.


9th Calculating area for the layer 6c
field HECTARE use 'and choose units accordingly.

Theoretical Approach: opening attribute table -> right click on "ha" -> "Calculate Geometry" -> Select the "Area and Units [hectares]" -> "Ok"

Practical procedure: a bug in the program means that the surfaces are calculated incorrectly in the above-described procedure. To obtain the correct values must be in another column, the area in square meters will be charged (see the above-described procedure can be used). The number of hectares can now be created on the "Field Calculator". For this purpose, the calculated square footage is divided by 10,000 and in the "ha" now is the correct number of hectares.


10th Creating the table Sum_Layer_6c.dbf 'on are field names, field numbers, field surface
In the attribute table can right-click on a column of the "Summarize" started: Based on Layer_6c

The table is only one record (one line) for each protected area and the following attributes. The drop-down menu is the "Gebietsnum" is selected. In the 2nd Window you select the fields you want (in this case "Gebietsnam" and "ha") from. The 3rd window allows you to specify the location and name.

Insight Layer 6a & 6b
differences

• In layer 6a, only the information of the protected areas layer exists
• in layer 6b, the information of the protected areas layer and the counties layer exists

similarities:

• The nature reserves in the city of Kaiserslautern in two layers present

comparison,

: Layer 6b & 6c

• differences Layer 6b shows all protected areas that are in the area of the city of Kaiserslautern
• In Layer 6c are the nature reserves and the bounds of the city of Kaiserslautern.

similarities:

• The layers contain information from the districts of layers and layers of protected areas

files for practice download here.