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qshirklu in Spatial Statistics5 days ago (Show more Show less)

What test or method would allow us to measure spatial clustering of one phenomena around another?

We are looking to determine if there are statistically significant clusters of a particular business type around schools.

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Dan_Patterson

(to qshirklu) 5 days ago (Show more Show less)

start with descriptive distance-based statistics using something like the Near tool (Euclidean distance as a first run, Network distance if you have the network analyst. Have you read any of the literature to support the hypothesis? There is some (fast food and proximity to schools)

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nikos.tz in Spatial Statistics3 weeks ago (Show more Show less)

Calculate the mean of multiple rasters and save the result into a new raster.

Hi, I have a set to 502 rasters (time series) of MO11A2 products (MODIS LST 8-day product), MOD11A2.A2008001.tif, MOD11A2.A2008009.tif etc. They have the same extent and CRS. I want these 8-day products to be averaged into monthly composites. Could "Cell Statistics" do this job? I am using ArcMap 10.3. I have found a similar question, but I… (Show more Show less)

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Dan_Patterson

(to nikos.tz) 3 weeks ago (Show more Show less)

Then give it a try, the cell statistics with mean/average is what you would want. Check the nodata setting carefully to get the desired result. If there are too many rasters you may run into memory errors and will have to go with sub-chunks using the 'sum' option, then average those (ie 3 chunks of 10 with sum, to get 3 results which you average)…

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drycreekeng in Spatial Statistics1 month ago (Show more Show less)

Error loading Exploratory Regression tool

I would like to run the Exploratory Regression tool using ArcCatalog, and when I open the tool I have an immediate error in the Input Features field, shown below: Has anyone run into this problem? I don't see that I need to enable any extension (however I do have Spatial Analyst extension selected). Does it have something to do with my python… (Show more Show less)

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

I was able to get the Exploratory Regression tool to work seamlessly in ArcPro, so it must have something to do with Pandas and other python-based numerical programming tools being installed as part of ArcPro.

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noamdsystematics-co-il-esridist

in Spatial Statistics3 months ago (Show more Show less)

What is the algorithm to generate interpolation surfaces of the independent variables using GWR?

When using GWR, based on point data, to conduct spatial analysis, interpolation surfaces are also generated for the explanatory, independent, variables. In the "how GWR works" page (How GWR works—Help | ArcGIS Desktop ), it is stated that "Parameter estimates and predicted values for GWR are computed using the following spatial weighting… (Show more Show less)

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noamdsystematics-co-il-esridist mentioned Spatial Statistics 3 months ago Show mention context Hide mention context

What is the algorithm to generate interpolation surfaces of the independent variables using GWR?

noamdsystematics-co-il-esridist mentioned Spatial Statistics 3 months ago

David.Rauch@raleighnc.gov_ral in Spatial Statistics3 months ago (Show more Show less)

Regression/OLS for point data?

I have been looking around online and whenever I see reference to OLS or GWR, few to no one using point (x,y) data in their tutorials. Why is this and is there a way to do a "what is the relationship between these variables" analysis without attaching the x,y point data to polygons. I am comfortable making grids or associating individual points… (Show more Show less)

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MervynLotter (to David.Rauch@raleighnc.gov_ral) 3 months ago (Show more Show less)

Hi David Are you using ArcGIS Pro or ArcMap? Do your point records have any abundance data associated with them. The data points need to contain numeric values that vary in abundance and across space for the ArcGIS regression methods. If you are using ArcGIS Pro, do take a look at Forest-based Classification and Regression—ArcGIS Pro |…

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unlv_hsang in Spatial Statistics5 months ago (Show more Show less)

Average Nearest Neighbor

I have a question regarding the Average Nearest Neighbor analysis. Is there a scale that describes the levels of the Nearest Neighbor ratio? Are there benchmarks in the literature associated with various Average Nearest Neighbor ratio/scores? For example, can a certain ratio be described as "tightly clustered" versus a different level ratio… (Show more Show less)

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Dan_Patterson

(to unlv_hsang) 4 months ago (Show more Show less)

There are papers eg ScienceDirect You can generate your own point distributions drawn from statistical distributions (ie bivariate normal, uniform etc) Aren't the statistics enough from those provided by the tool to assist you?

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zli784 in Spatial Statistics4 months ago (Show more Show less)

How to delete 0 data in ArcMap?

Recently I'm working on a project that needs me to calculate the LST of an image. I clipped the raster image by mask and there are many data with an invalid value (pixels outside the mask region) after calculating LST in ENVI software. How can I eliminate those data from the calculation process? Because I need to calculate the max and min as well… (Show more Show less)

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dkwiens

(to zli784) 4 months ago (Show more Show less)

See examples here (your expression would be like "Value > 0", or InRas1 > 0): OutRas = Con(InRas1, 40, 30, "Value >= 2") Con—Help | ArcGIS for Desktop

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geok_2018 in Spatial Statistics4 months ago (Show more Show less)

Choosing conceptualization of spatial relationships - hot spot analysis

Hello, I am new to this forum so apologies if this topic has been raised already. I couldn't find any previous post which actually fully helped with my case. I have circa 270 polygons of different size and shapes for some countries in Asia. A few polygons are dispersed in space, but still have neighbours. My aim is to run Hot spot analysis… (Show more Show less)

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geok_2018 (to RRuthart-esristaff) 4 months ago (Show more Show less)

Thank you! I will look into this. Best

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stephanieduce86 in Spatial Statistics4 months ago (Show more Show less)

Unnamed error with Optimized Hot Spot Analysis, v 10.5.1

Hi, I am trying to run an Optimized Hot Spot Analysis in ArcMap version 10.5.1. This tool worked for me a couple of weeks ago but now there is an error icon next to the Input Features (screen shot attached) and no matter what input layer I select (projected/unprojected/shapefile/feature class etc.) the error does not go away. It doesn't provide… (Show more Show less)

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Dan_Patterson

(to stephanieduce86) 4 months ago (Show more Show less)

If it has worked in the past with the same or similar data, perhaps something has gone bad with your install. From Windows Install/Remove programs, try a 'Repair' of the installation to see if that fixes it. If not, you may need to 'reset your application profile' last step would be an upgrade

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