One numeric field in my data involves null values (missing data). When I specify it as quantities in symbology, it turns out that the polygons associated with null values are taken out of the map. How can I represent these values (i.e., their polygons) on map? I read some where to convert null values to 0, but doing so is misleading as these are missing entries, not 0.
I get into this situation after joining shapefile with an attribute table, but I guess it happen with any data that include missing data. Is it so? Or is only unique to joining procedure?
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I get into this situation after joining shapefile with an attribute table, but I guess it happen with any data that include missing data. Is it so? Or is only unique to joining procedure?
أكثر...