![]() Note that in most programming environments (including ArcMap), the expression R1 > R2 produces the same output because the value 1 is the numeric representation of TRUE and 0 that of FALSE.If you only need to visualize the raster with 4 classes, you can do that in the raster’s Symbology.Īnother idea is to use the Reclassify tool to assign, say, a value of 1 to values 0-0.25, a value of 2 to values 0.25-0.5, etc. It generates the same output as the one shown in the above figure. Outputs a value of 1 if R1 is greater than R2 and 0 if not. For example, ArcMap’s raster calculator expression Con( R1 > R2, 1, 0) For example, ArcMap has a function called Con(condition, out1, out2) which assigns the value out1 if the condition is met and a value of out2 if it’s not. Some applications make use of special functions to test a condition. In these programming environments, the single equality syntax is usually interpreted as an assignment operator so R1 = R2 would instruct the computer to assign the cell values in R2 to R1 (which is not what we want to do here). When assessing whether two cells are equal, some programming environments such as R and ArcMap’s Raster Calculator require the use of the double equality syntax, =, as in R1 = R2. A value of 1 in the output raster indicates that the condition is true and a value of 0 indicates that the condition is false. Generate the variance and confidence interval mapsįigure 10.10: Output of the operation R1 > R2.Moran’s I as a function of a distance band.Computing the Moran’s I statistic: the easy way.Computing a pseudo p-value from an MC simulation.Computing the Moran’s I statistic: the hard way.Test for a poisson point process model with a covariate effect.Computing a pseudo p-value from the simulation.Modeling intensity as a function of a covariate. ![]()
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