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r.jaroszuk@o2.pl in Analysis1 week ago (Show more Show less)

visibility from the observer to the target

How to create the visibility from the observer to the target (for example UAV) which the z-location is derived as a height above sea level. It is important when I want to calculate visibility to the UAV (airplane) flying at a fixed altitude, but calculated from sea level not above ground level.

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Shared by jpoyittesriaustralia-com-au-esridist

from ArcGIS Pro2 weeks ago (Show more Show less)

Are you more likely to use ArcGIS Pro or ArcMap for your day-to-day work?

I've been working with various clients to migrate from Map to Pro, and am trying to get an idea of the consensus in the GIS community regarding which one is used more often. arcpro arcgispro arcgis arcmap arcmap

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KKramer-esristaff mentioned Analysis 2 weeks ago Show mention context Hide mention context

Are you more likely to use ArcGIS Pro or ArcMap for your day-to-day work?

KKramer-esristaff mentioned Analysis 2 weeks ago

That is true. There are many other places where the poll would be relevant. Like Analysis Network Analyst ModelBuilder Spatial Statistics etc. Many users who participate in those parts of the GeoNet Community may use either ArcMap, or ArcGIS Pro, or both, and it would be insightful to hear about their experiences.Preview Hide preview

adamfm in Analysis1 month ago (Show more Show less)

In need of help with Arcade expressions

I have two features in my map. A polygon feature and a point feature. I would like to join the polygon feature to the point feature using a common field. All the points are contained within the polygons. I have about 2000 points and 100's of polygons. I have tried using the Arcade expression below to calculate the join field in my point features… (Show more Show less)

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xander_bakker (to adamfm) 2 weeks ago (Show more Show less)

Hi Adam Majzoub , There are a couple of things wrong with the expression. First of all you cannot provide a FeatureSet to the Within function. It requires geometries. If you only want to have a single address, you don't need to loop through the results. See the example below: var intersectLayer = Intersects($feature,…

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_Lies_ in Analysis3 weeks ago (Show more Show less)

How to compare a TPI raster map (continuous variable) with a land-use raster map (wetlands - categorical variable)?

I want to compare two maps (covering the same area): a raster map of the Topographic Position Index (TPI) with values ranging from 0 to 100. This is a continuous variable. I added a picture in attachment. a raster map with wetlands (permanent wetland, temporal wetland, no wetlands present), so this is a categorical variable. I added a picture in… (Show more Show less)

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rmcfarlandcp in Analysis3 weeks ago (Show more Show less)

Hi all, I am currently working on analyzing topographic data collected over a span of 3 years on the same stream reach. The analyses require I develop a cross-sectional profile at the same exact location for each year to compare the geomorphic change of the stream channel. I am using the 3D Analyst extension and the "Interpolate Line" function… (Show more Show less)

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kadishauli in Analysis3 weeks ago (Show more Show less)

Hi all, I would like to find two profile sections or two areas that have similar topographic properties (i.e. dimensions, slope, height difference etc.). Is there a tool/script that finds it? thanks a lot s

similar topographic areas or profiles

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raihallta_VCU in Analysis3 weeks ago (Show more Show less)

VBscript to group discrete integer polygon gridcodes into natural breaks using the Field Calculator

The goal was to use the weighted overlay tool to create a wetland suitability index using 3 indices: soil conditions, NDVI, and NDWI. Originally the NDVI and NDWI were integer rasters but due to the soil map being a vector file i choose to convert the rasters to vector and go about weighting them using the Field Calculator. I would have used… (Show more Show less)

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kenbuja

(to raihallta_VCU) 3 weeks ago (Show more Show less)

First, click the "Show Codeblock" option. Use this in the "Pre-Logic Script Code" area dim temp If [gridcode]<-78 Then temp = 1 elseif [gridcode] < 153 Then temp = 2 elseif [gridcode] < 397 Then temp = 3 elseif [gridcode] < 613 Then temp = 4 elseif [gridcode] < 756 Then temp = 5 elseif [gridcode] < 999 Then temp = 6 end if and put…

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pbanerjee in Analysis4 weeks ago (Show more Show less)

Creating raster from machine learning results

Suppose I train a machine learning algorithm with instances and labels from a set of attribute rasters and known points (say 1600 points): label: forest fire location with lat-long attributes: rainfall, temperature, slope..... etc. with lat-long after training and testing the ML algorithm, I get a satisfactory result. Now, how am I… (Show more Show less)

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WhitneyNewcomb in Analysis2 years ago (Show more Show less)

How to determine the changes between two polygon shapefiles of similar data

The city I work for gets its parcel data from the county once a month so we have several years of almost the same data. I want to be able to determine where changes occur between every new month. So what are the changes between September to October, October to November, etc. And by changes I mean any change in geometry (like parcel splits or… (Show more Show less)

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bharold-esristaff

(to WhitneyNewcomb) 4 weeks ago (Show more Show less)

Hello, please see this blog - which has a link to an updated sample for change detection See What Changed and Where It Changed Requires ArcGIS Data Interoperability extension.

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