Linked Questions

1
vote
1answer
411 views

Randomly selecting points within polygons in ArcGIS Desktop? [duplicate]

I have 131 polygons (point buffers) and need to randomly select a point within each buffer. Seems like it should be easy but can't find any solutions online. Running 10.5
1
vote
1answer
252 views

Random selection of polygons in ArcMap? [duplicate]

I have thousands of buildings blocks in ArcGIS. I want to select a half of this blocks randomly. How can I do it?
2
votes
3answers
2k views

Differences between Python window and IDLE for Scripting with ArcGIS Desktop?

I'm making a power point presentation about the differences between Python window and IDLE for my coworkers. I only use the python window to get feedback from my custom toolbars. I tried using it once ...
2
votes
2answers
794 views

Saving python script as a tool in arcGIS

I am trying to use the script from Randomly subsetting X% of selected points using ArcPy? to randomly select and export points in ArcGIS. Specifically, I am using this: def SelectRandomByCount (...
1
vote
0answers
587 views

Random Selection using Select By Attributes tool in ArcMap? [closed]

How I can make a SQL syntax to generate "RANDOM SELECTION" in Select by attributes tool in ArcMap?. E.g. We have two kind of sample: Quantitative an Qualitative data. Quantitative (seven cases): 1,...
0
votes
1answer
184 views

selecting a random sample of parcels

I am faced with the following issue. I got a raster map showing the position and extent of land parcels within a 35 sq Km area. The number of parcels is about 200. In anticipation of the following ...
0
votes
1answer
141 views

Getting working Python script to run from toolbox?

I'm creating a model, using ArcGIS ModelBuilder, and want to use SelectRandombyPercent from Randomly subsetting X% of selected features using ArcPy? to randomly select points from a feature class. ...
5
votes
1answer
99 views

Preparing data for semiovariogram analysis in ArcGIS with large sample sizes?

I am working on a statewide project to create surface water quality grids from point samples. In some instances, we have large sample sizes (n>50,000) which is problematic when creating ...
1
vote
1answer
90 views

Selecting points using random field values in ArcGIS Desktop?

I have point layer, counties border area layer and I want to pick different number of points within different areas (counties) but from existing point layer - e.g. county A -> 10, county B -> 6, etc. ...
1
vote
1answer
76 views

Randomly subsetting % of polygons by class/attributes using ArcPy

Referring to this topic How to randomly subset X% of selected points?. I tried in ArcPy and I can't figure out how to change this code to randomly select 50% of the polygons based on the attribute (...