When adding a numeric field to a file or personal geodatabase attribute table, 'precision' refers to the number of significant digits that can be stored in a field, and 'scale' represents the number of decimal places. The following workflow describes how to define the precision and scale for fields in ArcMap.
In some cases, customizing the precision and scale is necessary when inputting numeric data that requires a certain range of values or formats, such as coordinate values.
I'd like to change this field to have a precision of 6. What's the best way to do this? The fact that this attribute is non nullable seems to complicate things. If I try to add a new attribute to the table with precision of 6 and non nullable, I find that the table must be empty in order to do this. The table will never be empty.
Specifying the precision and scale allows you to restrict the range of values and number formats a field can accept, giving you greater control. For example, if you specify a float with a precision of 4 and a scale of 2, the field accepts 12.34 (or 12.3 or 12).
For some reason I cant seem to find where to set or change Field Properties (...I recall how to in ArcMap). I'm in Field Design and thinking this has got to be real easy, but I'm just overlooking it.
To change the alias, default value, or length of a field, double-click the value in the Field Properties list and type a new value. To change the null value or associated domain for a field, choose a new value from the drop-down list.
When you draw maps within a data frame, you can display the map at any desired map scale. You can also set up a series of desired map scales that allow you to select a map scale from a list. You can specify the scale of your map by either typing in a value or choosing one from a list.
Hi, I have a raster layer that has values between 0.5 to 2.0. I want to change (narrow) the range of its values to be between [0.95 1.05]. Every cell value of the layer of course changes accordingly. Any tool or way in ArcGIS to do that? Thanks in advance Solved! Go to Solution.
What is scale vs precision GIS? Precision describes the number of digits that can be stored in the field, while scale describes the number of decimal places.
By stretching the values (shown in histogram B) across the entire range, you can alter and visually enhance the appearance of the image (image B). Different stretches will produce different results in the raster display.
