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Making a reclassification table

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Presentation on theme: "Making a reclassification table"— Presentation transcript:

1 Making a reclassification table
Module 4 01/12/2018 Making a reclassification table Auteur: John Stuiver

2 Module 4: Preprocessing
01/12/2018 Determine Extents Study Area Xmin Ymin Xmax Ymax

3 Module 4: Preprocessing
01/12/2018 Determine Extents Study Area Clipbox Xmin Ymin Xmax Ymax

4 Module 4: Making a reclassification table
01/12/2018 Reclassification Key Attributes Objective of a reclassification table is to assign a new attribute class value to the unique (combinations of) values of other attributes that define the class of interest. Unique values of TDN_CODE and OMSCHRIJVI are assigned new suitability weight factors in a new attribute.

5 Module 4: Making a reclassification table
01/12/2018 Create a table with unique key attribute(s) values In ArcGIS this is done using the Frequency tool

6 Module 4: Input Table

7 Module 4

8 Module 4: Start Reclassification Table

9 Module 4: Making a reclassification table
01/12/2018 Making the correct reclassification object definition Tdn_code Typelandgebruik Old object/entity definition Tdn_code Typelandgebruik LR_WGT New object/entity definition

10 Module 4: Making a reclassification table
01/12/2018 Making the correct reclassification object definition Tdn_code Typelandgebruik LR_WGT Add Field/Attribute to make New object definition

11 Module 4: Making a reclassification table
What must the user determine to make a new field/attribute when adding a field to existing table? Name Data storage type Nullable

12 Module 4: Making a reclassification table
What data storage types do you have? Double, Float Long and Short Integer Text strings Date Blobs

13 Module 4: Making a reclassification table
01/12/2018 Making the correct reclassification object definition

14 Module 4: Making a reclassification table
01/12/2018 Making the correct reclassification object definition

15 Module 4: Making a reclassification table
01/12/2018 Give a default value to new fields/attributes; Do not allow <Null> as a field/attribute value!! Note!! Alias Field Names Not Used in Field name selection Tools

16 Module 4: Making a reclassification table
01/12/2018 Give a default value to new fields/attributes; Do not allow <Null> as a field/attribute value!!

17 Module 4: Making a reclassification table
01/12/2018 Topographic layers of information: Landuse, Infrastructure, Houses, Water, etc LR_WGT Typelandgebruik Tdn_code Reclassification Table Changing the suitability weight factor is only done in one table instead of all the feature attribute tables!

18 Questions? 01/12/2018 © Wageningen UR


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