Questions tagged [heat-map]
For questions about heat maps, where a heat map is a graphical representation of geographic data, generally in the form of a coloured raster. Heat maps are used to highlight regions of higher than average data density.
400
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How to colour categorise population estimates using GRID3 Settlement Extents in ArcGIS Pro [closed]
I am new to ArcGIS Pro and geospatial data in general. I have downloaded settlement extents data from https://grid3.org/. I had naively thought the data would display the population in a heatmap like ...
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QGIS: Making a heatmap which doesn't look at point density
I have a file of postcodes (x and y co-ords, and a percent value for what I'm measuring).
In some areas there are a lot of postcodes, in others very few.
I can use the heatmap option in properties>...
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Red Amber Green colour system for point cluster map in QGIS
I have a point cluster map of collisions occurred in an area, that shows all the cluster numbers in the same symbol/colour- however i want to create a map with the cluster colour updating according ...
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Tool Heatmap (Kernel Density Estimation) in QGIS stops after a short time without error message
I want to use the tool Heatmap (Kernel Density Estimation) in QGIS. The input layer is a point layer with the coordinate system Shere_Equal_Earth_Greenwich ESRI:53035. As parameter I define only the ...
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Getting gradient thresholds OpenLayers heatmap?
I develop an application that displays results of the measurements of pollutants in snow. Due to large size of the area (lake Baikal), it is difficult to take samples everywhere, so I was asked to ...
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263
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Overlay two maps (layers) with Plotly
I'm using plotly to plot a density heatmap from a point dataframe. What I would like to achieve is the visualization of two different density maps with different colour scales at the same time. The ...
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115
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kernel density estimation in qgis plugin?
I have tried using animove plugin, but it keeps coming up with errors, is there a way to do a kernal density estimation for 50% and 95% in qgis for point data?
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Heatmap changes to single color when zooming out in QGIS
Working with QGIS 3.28, I have a point layer with several million points. Using heatmap renderer, I get the left heatmap with these settings:
scale 1.100.000
radius 200 meters at scale
Maximum value: ...
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Calling multiple leaflets of unique shapefiles and data frames on the same map in R
I am visualizing population heat maps for the commission districts of thirty Florida counties using Leaflet, but I can't figure out how to call them on the same leaflet map with the same population ...
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49
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Creating heat/proximity map from vector line data
I wish to create a population pressure map using vector line data (roads), to assess forest degradation pressure using QGIS. I need a 'line density' raster output, that works in a similar way to the '...
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Mapping Census data on non-Census shapefile polygons using R
Using R, I am trying to create a heat map of population in the five county commission districts in Alachua County, Florida, by merging total population data at the block level from the Census with the ...
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Creating Graduated heatmap
I am completely new to QGIS.
The problem I have is not knowing if the data I have currently can produce the results of image 2, And if not what I need, or point me in the right direction.
Data I have ...
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188
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Create series of heatmaps for each year in QGIS
I'm working with QGIS 3.22.10-Białowieża and I've got a point layer with the attribute year. I need to create a series of heatmaps, one for each year, but I haven't found any filtering option in the ...
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Heatmap creation
I am trying to create heatmaps showing potential savings/costs within a certain area.
however when I go on to the heatmap creation, My advanced parameters do not let me select further options for the ...
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Memory and Value errors when trying to create weighted kernel density estimation raster from geodataframe in python
I am trying to create a simple kernel density estimation raster from a geopandas geodataframe containing polygons in python using the “spatial-kde” package, but am encountering error messages that are ...
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Difference between Heatmap in QGIS and Kernel Density in SAGA
I'm trying to migrate my workflow from QGIS to SAGA so that I can automate it from the command line or a standalone Python script. Part of the workflow is running a KDE (or rather, a series of KDEs). ...
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QGIS: Heatmap of polutant data using contour polygons
1. ASSIGNMENT
I have got an even grid of points (figure 1) with attributes of the values of emissions or pollutants caused by traffic - modelled in a specialised SW for this. I need to use this point ...
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243
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Create heatmap and output to raster or shapefile
I am trying to create heatmap with spatial data to display on GeoServer. Please note that it should be smooth by some kernel density estimations and not a simple count.
Looks like the geoplot.kdeplot ...
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199
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Trajectory density map or line density map
Data: ships AIS trajectory Data with longitude and latitude. (that data is a CSV file with several columns:id,time,lon,lat,etc.)//
I transform the point to line, every line is a ship trajectory. Now I ...
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Mergin plugin options
Can I use the points created from field study via free Input App on Iphone, and Synchronize them into free QGIS, and then use these points in creating a heatmap on QGIS?
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125
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About seasonal fluctuation of NDVI using GEE
Purpose:I would like to use GEE to check where the vegetation index is increasing from winter to summer.
The median value is calculated for December-February in winter and July-September in summer, ...
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Interactive Gridding tool in QGIS?
I'm looking to make a heatmap type raster based on point data in QGIS. I'm used to doing this in Mapinfo using the "Interactive Gridding" function in the Surfaces tab. Is there an equivalent ...
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34
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GeoServer style based on number points returned
I have a point layer with many points. I am filtering these points from the frontend application (OpenLayers+Angular) with multiple filtering options (dropdowns, checkboxes, etc.) using CQL_FILTER ...
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What is unit of Heatmap (Kernel Density Estimation)? [duplicate]
I want to calculate a housing density using a points layer in the “WGS84 / UTM zone 56S” projection, setting the parameters as follows:
RADIUS = 1000
PIXEL_SIZE = 100
KERNEL = “Quartic”
OUTPUT_VALUE =...
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48
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QGIS Handling Heatmap Data Range
I have a grid of hexagons with data (ranging between 0 and 1) and, using the centroids of the hexagons as a base, I would like to visualise the data as a heatmap.
On the technical side, this works ...
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408
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Method of interpolation to create weighted heatmap rasters in R from point data
I want to create a geospatial heatmap that is weighted by a specific variable sourced from georeferenced points.
An example dataset is 'us_states' from the 'spData' package. I want to take this data, ...
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207
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Display a Leaflet Heatmap with a gpx file and Omnivore
I first displayed a Leaflet Heatmap with the plugin : "leaflet-heat.js" and a geojson file with this code found on Gis.Stackexchange
var geoJsonUrl = "link to the geojson file"
...
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97
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<geotools/HeatmapProcess> convert GridCoverage2d to BufferedImage
I got the heatmapprocessTest code from geotools github
However, I can't confirm that the heat map is coming out well.
Ultimately I want to create and save the heatmap as a BufferedImage. (png)
For ...
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203
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Cesium and GeoServer WMS heatmap
I've got problem with a WMS heatmap layer in cesium. I know how to handle it in OpenLayers (single tile) and in Leaflet (non tiled plugin) but I don't know how to handle it on 3D globe.
Here is my ...
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Making weight heatmap on recurring event in points layer using QGIS
I have a heatmap created on a points layer of deer-vehicle collision. Now, I want to weight the heatmap on the recurring of crash in the same area in different years.
I would give weight 0 if a point ...
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98
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Area based Heatmap (QGIS)
I am new to QGIS. I am trying to create a heat map based on area not points. What I want to acheive is similar to this question.
I want to create a binary raster (0 for no point, 1 for point). Then, ...
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Making a heatmap with ArcGIS API for JS while using a Graphics collection as source
I am trying to make a heatmap from congestion data in the distribution network for electricity. I use a collection of Graphics as the source for a FeatureLayer and add the heatmap accordingly. It all ...
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Folium and heatmap is not opening in pycharm
I'm using PyCharm version 3.7.
When I tried to open simple folium map I'm not getting any output.
I tried something like this
import folium
import pandas as pd
import csv
dataframe=pd.read_csv("...
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What do gradient stops' relative positions on colour ramp (%) signify when using QGIS heat map tool?
I'm using QGIS 3.18 heatmap tool to visualise the space use patterns of chimpanzees for my master's dissertation. I import each chimpanzees coordinates as a csv file and then change the layer's ...
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Reproduce QGIS vector heat-maps via kernel density rasters
I would like to reproduce the vector heat-maps generated through the user interface but via the pyqgis heat-map kernel density tool instead. Does anyone know the equivalent parameters? or styling code?...
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202
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Absolute positions for Color Ramp gradient stops in heat map?
I'm using QGIS 3 and trying to create a heat map using GPS data acquired during various trips. I want the resulting heatmap to clearly show each location acquired at least once with some radius (...
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Creating heatmap from vector tiles using OpenLayers
I know that is possible to make a heatmap using ol/layer/Heatmap, but this component accept as source only ol/source/Vector component.
Someone have build a heatmap using VectorTile as source? Can you ...
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Gettting data from georeferenced PNG QGIS
I'm working on a predictive system and was able to locate a PNG from another researcher showing a heat map of Oklahoma. I was able to georeference the PNG and bring it into QGIS 3.22. What I need to ...
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How to generate heat map (kernel map) from polygon geometries in QGIS?
I have a polygon type shapefile with the total number of reptiles in 7 regions of my city, I would like to generate a heat map (kernel map) from this shapefile.
QGIS only generates heatmaps from point-...
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Problems animating heatmap in QGIS temporal controller
(QGIS 3.20) I am having trouble getting my heatmap to animate properly using temporal controller. I am using a point layer with many points in the same location so a heatmap would really help ...
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Which analysis to use? Analysing points' likeness across multiple fields including proximity. (AHP?)
I don't have much of a background in coding.
I have a point layer with 400 points. The attribute table contains 3 fields of interest:
Bearing (values between 0-180);
a Ratio (ratio of ellipse long/...
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258
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Heat Map - Cover non-point areas QGIS
I am doing a heat map of the density of schools within a specific area of a city. Right now, I have this:
I would like to create a more formal map in which the white non-coloured aspects are coloured ...
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101
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Does qgis2web plugin support heatmap symbology for a point layer?
I am trying to create a web page from QGIS using qgis2web plugin. I have a point layer and when I render its symbology as single symbol, it gets successfully exported to a web page when I used leaflet....
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243
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How to make a heat map based on Grid layer in QGIS
The way this image is displayed is very clear, it shows the correlation of two (or more) attributes in space. This picture should be drawn in Arcgis, it should be a combination of grid layer, polygon ...
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231
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Interpolating 0-1 (presence / absence) point data in a vector using QGIS "3.20"
I would like to make a heatmap using presence absence data (imported as a CSV file) for koalas but I can't work out how to do it.
Here is the raw data (presence ) map
This is the kind of map I ...
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1
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111
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Heatmap based on numeric attributes, not on density for line representation using QGIS
I have a number of points on a map, each with a numeric attribute taking values from 1-9. The points with attribute equal 1 should have the highest density representation, and the points with ...
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Making heatmap points full opacity regardless of weight using OpenLayers
As shown in this example, when the blur is set to 0, the opacity of each point correlates to the weight, and the opacity parameter is layered on top of the weight opacity.
Here is an example image of ...
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OpenLayers: Change point colour to indicate number of overlapping points
I would like to have a heatmap that represents the number of overlapping points, basically to achieve the exact same thing as in this post, but in OpenLayers. At the moment I'm using opacity as an ...
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252
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Heatmap with Contour Polygons
I have point data off the coast of Oahu. Someone else used these same data to create two polygons (approximated by me in the figure below with the green and red hand-drawn boundary lines). I believe ...
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148
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Combining GPX tracks in QGIS
I have several GPX tracks on the same road and I would like to average out a heatmap of velocities from these GPX tracks on this road.
I think I figured out a way to do this in QGIS - in theory.
I ...
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