Questions tagged [hot-spot]
The hot-spot tag has no usage guidance.
-1
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0answers
26 views
Weather Heat Map/ Hot Spot [duplicate]
I have a shapefile of tornado warning polygons. I would like to find and map the areas that have been in the most amount of warnings in that period of time. For example, I would be able to see that x ...
0
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0answers
51 views
Put together Shapefiles with data for individual years into Multiple Year Space-Time Cube
I have 16 shapefiles (listed above). Each shapefile contains county-level data on mortality rates for years 1999 to 2015, respectively. I organized the mortality rate data in Excel. I joined the ...
1
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0answers
53 views
Comparing hotspots to points using ArcGIS Desktop?
I've done a simple hotspot analysis of car accidents to show where they are concentrated. I did this in ArcGIS, first using the Getis-Ord hotspot tool with an accident point shapefile. I then used ...
2
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1answer
40 views
Sub Segment data for Hot Spot Analysis
I have some crime data in a point file for the whole united states. I would like to run a hot spot analysis on the data in arcgis 10.4 using the Hot Spot Analysis tool. Instead of running it for the ...
4
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0answers
354 views
Emerging hotspot analysis (space-time patterns) in QGIS
I worked with crime data a while ago and was really impressed by the possibility in ArcGIS to detect significant hotspots and their development over time (Emerging hotspot analysis).
Does anybody ...
0
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1answer
81 views
Hotspot Analysis Output Color Disappears When I Reload the File in Another Project
I am using ArcGIS desktop 10.x. I used hot spot analysis on a couple of points feature classes, and saved the output to a gdb in shapefile format.
I then reload the shapefiles in a newly created ...
1
vote
1answer
56 views
Multi Value Hot Spot Analyis in ArcGIS Desktop?
Is there a geoprocessing tool that will find areas that are hot or cold spots in multiple fields in the table?
I have a polygon layer with two fields. One field is the average organic soil depth for ...
2
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0answers
457 views
QGIS Hotspot Analysis Tool Polygon data [closed]
I am having some issues with the QGIS Hotspot Analysis plugin - after reading the user manual and instructions for correctly downloading it. I have tested it with the test data provided - the point ...
1
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0answers
124 views
Use of Hot Spot Analysis (Getis-Ord Gi*) [duplicate]
I'm working with a polylines shape. I'm searching for a tool that could help me to define neighbourhoods using the values of the polylines.
I have good results with Hot Spot Analysis (Getis-Ord Gi*), ...
2
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0answers
198 views
JPEG2000 Image Mosaic with GeoServer
Using GeoServer 2.8.4, I have been successful at creating JPEG2000 image mosaics with OpenJDK 1.7.0. I use the gdal plugin and jp2k plugin and JPEG2000 images are loaded with Kakadu. I explicitly set ...
2
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0answers
98 views
Understanding why hotspots from Getis-Ord Gi* are perfect circles? [closed]
I've been using optimized hotspot analysis and the hotspot maps I am getting back frequently have rings of perfectly circular hotspots.
Is this because of the way Getis-Ord Gi* tests calculates ...
1
vote
1answer
77 views
What is a “feature” in Getis-Ord G* hot spot analysis?
From the official site, it says "The Hot Spot Analysis tool calculates the Getis-Ord Gi* statistic (pronounced G-i-star) for each feature in a dataset" and "xj is the attribute value for feature j".
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0answers
2k views
how to calculate getis ord using R
I'm trying to use getis ord on the new york taxi dataset to identify the hotspots based on the number of pickups.
I want to model the data into cells such that that score of each cell is calculated ...
0
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0answers
73 views
Importance of CRS in Getis-Ord Gi* hotspot analysis
I have a question about the importance of the chosen CRS in a Getis-Ord Gi* hotspot analysis - I am running a hotspot analysis (using Zone of Indifference spatial relationship) on a quite restricted ...
3
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0answers
267 views
Hot Spot Map in ArcMap and MATLAB [closed]
I've tried out the Hot Spot Map tutorial for ArcMap, which is working just fine, and I'm now starting to make some modifications so that it fits my data sets.
Instead of aggregating the points as in ...
1
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0answers
65 views
Is Hot Spot analysis appropriate if you see hot spots in areas that you would expect to see them in?
I am working with vessel position data on ArcGIS 10.0. My customer has requested density analysis maps. I was curious if hot spot analysis would be a more appropriate analysis? The study area is along ...
3
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0answers
773 views
How to Construct Spatio Temporal Clusters of Time Series Data in R
I have count data of one disease for various districts of a state of India on monthly basis. Is it possible to draw spatio temporal clusters in R? I have checked some R- packages for example ...
3
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1answer
150 views
Analyzing hot spots using point attributes?
I'm interested in looking at where hot and cold spots of certain social indicators (such as poverty, housing characteristics, urban sprawl, etc...) are in coastal communities along the East Coast. I ...
5
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1answer
983 views
How to create accurate heat maps and hot spot maps in QGIS? [closed]
I am mapping 5 heritage sites using DGPS point data. Each site has 100s, and in two cases 1000s, of points representing various attributes. I want to show the density of attributes and then ...
7
votes
2answers
605 views
Hot Spot Analysis using ArcGIS for Desktop?
I have a point shape containing locations of cars and a line shape containing roads.
Now I want to identify hotspots/clusters.
I want to find hot spots where for example the speed of the cars is ...
0
votes
1answer
502 views
Hot Spot Analysis
I'm using ArcMap 10.2- I've got a series of coordinate points, each with an associated value (level of income) that I would like to turn into a heatmap.
I've projected the points onto a map, run the ...
2
votes
1answer
230 views
Hot spot analysis indicated the areas with 0 value as hot spot?
I tried to look at whether there is cluster of psychiatric patients in a county. I have census tract data with a column showing how many psychiatric patients are there in a census tract. There are ...
4
votes
2answers
972 views
Methods for hot spot or cluster analysis for multiple measurements at the same geographic unit?
I would like to find geographic clusters of zip codes where each zip code has a measurement of a person's age (integer), sex (categorical/binary), and if they recovered from a certain medical ...
13
votes
2answers
5k views
Difference between Heat Map and Hot Spot Analysis?
What is the difference between "Heat Map Analysis" and "Hot Spot Analysis"?
Are we perhaps using hot spot analysis to get the required relations between features, and then using the results as an ...
6
votes
1answer
2k views
Trouble with Hot Spot Analysis (Getis-Ord Gi*) tool in ArcGIS
I am trying to locate areas with a high rate of accidents involving bicyclists or pedestrians per car accident of any kind. I have a point file of accidents and a point file of all those with bike/...
2
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1answer
2k views
Why are Low Values showing as hot spots?
Im running hotspot analysis on point data, attempting to examine pollution emissions. I ran spatial autocorrelation first in order to determine the default distance threshold to use in the fixed ...
7
votes
4answers
6k views
How can I reproduce Getis-Ord GI* hot-spot analysis tool in QGIS?
I'm trying to find a hot-spot analysis plug-in for QGIS that would perform similarly to the Getis-Ord (Gi*) hot-spot analysis tool used in Arc, but have not been successful. Does anyone have a ...
