In ArcGIS, how do I convert a shapefile to a raster using a numeric field in the vector data attribute table?

Raster grids in ArcGIS need to use integer or floating-point values for the 'Value' attribute in the raster attribute table. Thus, you cannot use a text field in a vector attribute table for the cell assignment in converting vector data to raster data. If you have a small set of different text field values, an easy way around this vector-raster conversion limitation is to add a new field to the vector data that is a numeric field with a unique numeric value for each unique text field value. For example, if you have a vector dataset with a test attribute and the only field values are 'banana' and 'mango', you can add a new integer field to this table where each feature/record has a value of 1 for 'banana' and 2 for 'mango'. Raster grids in ArcGIS need to use integer or floating-point values for the 'Value' attribute in the raster attribute table. Thus, you cannot use a text field in a vector attribute table for the cell assignment in converting vector data to raster data. If you have a small set of different text field values, an easy way around this vector-raster conversion limitation is to add a new field to the vector data that is a numeric field with a unique numeric value for each unique text field value. For example, if you have a vector dataset with a test attribute and the only field values are 'banana' and 'mango', you can add a new integer field to this table where each feature/record has a value of 1 for 'banana' and 2 for 'mango'. In the dialog box that opens, you can set the value for the new field for all the records you currently have selected. For example, enter Proceed in this manner until you have recoded the new integer field for all records. If you have only two unique text field values, you can open the Once you have recoded all the records, you can use this new integer text field for the 'Features to Raster' conversion in the Please provide your IU email address. If you currently have a problem receiving email at your IU account, enter an alternate email address. Please provide your IU email address. If you currently have a problem receiving email at your IU account, enter an alternate email address. Source.


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Last Modified: April 18, 2016 @ 12:06 pm