How to filter out raster values and average overlapping buffer values

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11-09-2020 03:52 PM
ZiyueXian
New Contributor

Hello,

I am currently dealing with a raster data with negative values but I want to remove them (aka I only want to keep values >=0). After that I need to map a csv file including thousands of poitns with longtitude/latitude information onto the raster data, and then I need to do a buffer of each point (buffer distance 2.5km). The buffer areas of each point will be overlapping since those points are really close to each other. The final result I want is to have a average buffer value corresponding to each data point, and then export them into a datafile (csv, etc.).

Any help is appreciated regarding removing negative values in raster data & averaging overlapping buffer values and exporting the data.

Thanks ahead!

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1 Reply
DavidPike
MVP Frequent Contributor

Relassify the raster:

Understanding reclassification—ArcGIS Pro | Documentation 

Add xy data (turn the csv to feature points)

Add x,y coordinate data as a layer—ArcGIS Pro | Documentation 

Buffer the points by 2.5km:

Buffer (Analysis)—ArcGIS Pro | Documentation 

Zonal stats (get stats from underlying raster where intersects each buffer 'zone'):

Zonal Statistics (Spatial Analyst)—ArcGIS Pro | Documentation 

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