System: ArcGIS 9.3 Dataset: 1. polygons of 3000 grid cells, each containing the average annual temperature of the grid cell 2. tree distribution map for 5 species (polygons) (species 1 to 5)
Purpose I want to know the average annual temperature of the ranges of species 1 to 5. Also, I want to compare if there is any difference in average annual temperature between the species distribution.
Procedure: Step 1: Clip the grid cell polygons using the distribution maps of the five tree species respectively.
Step 2: calculate the average of the annual temperature of the clipped polygons from species 1 to 5
Problem: Please kindly advise which method in ArcGIS 9.3 can perform step 2 for polygons.
Thank you in advance.
(Once zonal statistics was suggested. However, it was based on raster. I tried it but found this was time and space-consuming to transfer polygons to raster based on fine-scale.)
Can you simply open the attribute table for each type, right click on the temp column, and choose statistics? This will return count, min, max, sum, mean, std deviation.
