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I have a global ocean pH raster map.The raster has large NoData areas: all land areas and many coastlines have NoData. The land areas should remain as NoData, but the ocean areas (blue) should be filled with pH values. First I made a seperate map with all the ocean areas that need to be filled (black=1, white=NoData): Then I tried to… Show more
from I am using the Optimized Hotspot Analysis tool in ArcGIS Pro to identify clustering of high and low values in my incident point data. After running the tool iteratively for multiple input point datasets, I have noticed that the cell sizes and distance bands used vary per iteration. I can understand that this is because the number of points and… Show more
Hi. I have over 10 000 polylines spread over 430 polygons. I would like to sum the length of all polylines within each polygon. Do anyone know how I can do this in ArcGIS 10? I tried Hawth's Analysis Tools for ArcGIS, but it does not work with ArcGIS 10. Any help would be great Thanks.
Easy done in arc desktop. Use Tabulate Intersection (Analysis Tool Box > Statistics). This will create a table of the sum of the line within the polygon feature. The table will hold the polygon id. Join this table back to the original polgyon layer
I am running a GWR with a dependent variable that ranks from 1-5. I receive error: 110242: There is not enough variation in the dependent variable for at least one logical neighborhood. I have 5 explanatory variables with numerical ranges from 1 to several thousand. I have tried to change the Neighborhood Selection Methods and changed the ranking… Show more
Hello, I'm trying to run Forest CART in ArcPro 2.4, with about 8 explanatory variables trying to predict the 9th variable. The setting up of the tool runs with only warnings, then proceeds to Create Trees. However, Create Trees is stuck at 0% - I left it for over 2 hours, and it remained stuck at 0%. See below tool parameters: Since… Show more
9/10 spatial analysis I do involve mathematical expressions. Users want me to execute recursive math functions,to aid spatial analysis and clustering. I have challenges passing such expressions into arcpy.da and Code Blocks in calculate field. A simple case in point; I have the table below. I need the code to recursively calculate minimum start… Show more
Code ok. Typo ; rows at line 80 and 81 noted and rectified. It was meant to be row. corrected code below: import arcpy from datetime import datetime from datetime import datetime as dt from datetime import timedelta import time from datetime import date #Variables Start arcpy.env.workspace = r'E:\Patch\New File Geodatabase.gdb' fc=…
Hello, I wanted to perform a Grouping Analysis in ArcGIS 10.1. When opening the analysis tool and trying to select a unique ID field the entries where all blanck. I therefore thought, that mayber the unique identifier field wasn't set. Searching the Arc GIS Help Ressources I found this site that tries to explain how to set the Unique Identifier.… Show more
This was asked long ago, but I just ran across the same problem. My fix is very roundabout, but it did work. It only works for point feature classes and assumes that you want to use sequential integers starting at 1, but just in a different order than the ObjectID you have already. Use the Add XY Coordinate tool to add coordinates to your…