Options include Geometric Interval, Equal Interval, Equal Area, and Manual. The classification scheme used to display the resulting density layer. The interpolation will be performed and clipped to the boundaries of the area. A 95 percent confidence interval can be calculated for the interpolated layer by taking the interpolation value and adding two standard errors for the upper limit and subtracting two standard errors from the lower limit.Īn area from a layer or the draw tool can be used to specify an area of interest. The more accurate the predictions, the slower the results take to calculate and vice versa.Ī layer of standard errors can be created by checking the Output prediction errors box. The Interpolate Points tool can be set to optimize speed or accuracy, or a middle ground. It is not appropriate for data such as population or median income that change very abruptly over short distances. Interpolate Points is designed to work with data that changes slowly and smoothly over the landscape, like temperature and pollution levels. The input layer must have a numeric field to serve as the basis of the interpolation. Interpolate Points can be used to create a continuous layer of predicted rainfall amounts across the entire region.Ī point layer is used as the input. Rainfall amount is measured at designated weather stations. To run the Interpolate Points tool, your portal's hosting server must be licensed with an ArcGIS Server Advanced license.
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