assign6 - Assignment 6. Reclassification Tables I. What...

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Assignment 6. Reclassification Tables I. What they are, what they do Reclassifying data can make things clearer by simplifying the data. It is particularly helpful with raster data but is useful with vector data, too. ArcToolBox’s Spatial Analyst Reclass function is for nominal data, while its Slice function is for ordinal data (see ArcGIS help, using reclassification tables ). Both kinds of tables can be saved as remap tables for later use. Reclass specializes in changing single values to alternative values. Slice specializes in changing the ranges of values. Another kind of table, lookup , either creates a new raster by looking up values found in another field in the table of the input raster, or recategorizes unique values of vector data into a simplified scheme of categories. See Help>reclassify tool>using reclassification tables. II. Create a lookup table—the hard way To improve skills in editing tables, let’s create a lookup table the hard way. This example uses vector data. Step 1: Make a new table having one row for each unique value of the relevant
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This note was uploaded on 07/11/2011 for the course SYA 6356 taught by Professor Staff during the Spring '08 term at University of Florida.

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assign6 - Assignment 6. Reclassification Tables I. What...

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