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.

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26 views

Heat map with possibility of shading any country or province in the world?

My boss is collecting data which measures where visitors to our website are located. He wants me to make a choropleth map (I believe that's what it's called) in which countries and provinces are ...
3
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1answer
42 views

How to add a time component in a heatmap?

I have a point file extracted from an AIS network. 1 year is about 900 million points. Each point has a timestamp. I want to make a heatmap for a longer period of time, but I want the heatmap to take ...
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24 views

Heat Maps in Google Earth Engine

I have a set of points(lat, lon and other attributes) stored as an Asset in Google Earth Engine. I import this asset as a Feature Collection and visualize the points over Satellite Imagery in Google ...
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27 views

QGIS 3.8 heatmap error

I had assumed it was an error due to lack of space but no matter where we try to save it we get the folllowing error: Traceback (most recent call last): File "C:/PROGRA~1/QGIS3~1.8/apps/qgis/./python/...
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11 views

Kernel Density Estimate on point data in degrees (scikit-learn)

I am estimating point density, where I am having point coordinates in degrees, I need a raster(over the extent of these points) which provides a density estimation on each cell. I have tried on R but ...
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30 views

Created heatmaps are not displayed

I created a few heatmaps based on 2 different shapefiles( point layers). Then I joined the data from the 2 shp files, the joined file looks perfectly fine. I created a view heatmaps based on the new ...
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0answers
16 views

Heat Map- how to add colour division and legend [closed]

I would like to ask if anyone knows how to colour the certain counties of England + legend about the colour's meaning. Here is my code which will give me the chosen counties of England on a map. But I ...
1
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1answer
42 views

Getting AttributeError when exporting Heatmap using qgis2web? [closed]

I want to make a heatmap layer on my webgis. using these options but when i'm trying to export it using qgis2web i always get this error. 2019-06-21T10:15:53 WARNING Traceback (most recent ...
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0answers
13 views

Creating heatmap for spatial overlap of features (or buffers of features) across different layers using ArcGIS Desktop? [duplicate]

I have several layers of features. For example: Layer1 -> set of polygon features Layer2 -> set of point features (with buffer around each feature) Layer3 -> set of polyline features (with ...
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1answer
40 views

Creating\rendering a heatmap not showing up

I am having a problem rendering a heatmap. I am sure the heatmap is created but it doesnt display when I replace or add a renderer. var TF = new FeatureLayer({ url:"https://services3.arcgis.com/...
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1answer
99 views

Reclassifying Raster (Heatmap) from Value to Percent using QGIS?

I have a point layer with several points "belonging" to different years by attribute. For all points of each year I created a heatmap. Now I would like to define the core area of each heatmap. ...
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0answers
47 views

Calculating point density of distinct points using QGIS?

I want to calculate the density of a point layer with QGIS, but these points are dependent on one attribute. (I have different kind of points) I do not only want the normal heatmap; I need the ...
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0answers
35 views

Surface Temperature + Air Temperature in Landsat image comparisons

Quick question about relating Landsat Surface Temperature to locally recorded Air Temperature on a given day: Are differences in local air temperature captured by the Landsat ARD ST imaging process? ...
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0answers
32 views

QGIS Heat Map output not correct

Fairly new to QGIS here. I'm having trouble creating a heat map in QGIS3 from a set of points. I've followed what others have done online (e.g.: https://www.youtube.com/watch?v=o9Gqrr5cYrY) but in my ...
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0answers
137 views

Creating Leaflet Heatmap using LinsString GeoJSON

I need to create heatmap based on length property from a LineString GeoJSON file. I have tried to use Leaflet.heat plug-in, but this tool accepts points not lines. here is my code: $.getJSON("data/...
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0answers
52 views

Toggling off/on heatlayer using geojson file

I created a heatlayer using a geojson file. However, I am having trouble with toggling it on and off with a checkbox. Since the toggleHeatlayer function is within another function, it becomes ...
1
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1answer
50 views

Creating heat map animation based on point-shapefile with data attribute in ArcGIS [closed]

I want to create an animation of forest fires, using the NASA' MODIS data for the last 11 years. Their shapefile has acquisition data attribute — and it goes day by day all those years. I've already ...
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0answers
174 views

R : How to build heat-map based on ratios with leaflet package

I'm just starting to try out some things in the GIS arena and perhaps this question is a concept mistake. I've read the post R : How to build heatmap with the leaflet package and the fantastic answer ...
2
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0answers
68 views

QGIS 3.44 heatmap to contour file

I am trying to convert a point file, currently displayed into a contour file. The methods that I have tried, all expect a raster file as an input, but my source file is a vector file points, i.e. I ...
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1answer
126 views

How to Create Gradient map from GRID file in QGIS-3 Above?

I have a very important Question. I have a GRD file which can be opened in SURFER or QGIS or GIS. The problem is that how can I customize and make my grid file perfect? Here I have two photos which ...
0
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1answer
296 views

Dynamic CQL filter in leaflet.js

Tell me, please, how I can apply cql_filter, based on currently map location in leaflet.js. I have following code: var myLayer = L.tileLayer.wms("url-to-geoserver", { layers: 'heatmap:layer', ...
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0answers
53 views

Preparing data to show mostly high values area on heat map using ArcGIS Server?

My client maintain a database of building information, one of them are age of building. They would like to visualized the areas with more old buildings, here is a mock up of such data (we convert the ...
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0answers
219 views

OpenLayers. Slow map after render heatmap even when I clear the layer source

I'm working in a map with about 10 layers and it works fine, when I create a heatmap it becomes slower, that's something I was expecting, because the source has about 2000 points. When I want to make ...
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0answers
132 views

Basic Python plotting [closed]

Sorry if I sound like I don't understand, but I've been reading around trying to figure out how to do geospatial plotting in Python. I keep running into errors despite the examples I've seen appearing ...
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1answer
67 views

What do the heatmap layer settings numbers in mapbox stands for?

I have layer settings of mapbox heatmap as follows from this official site: What do these numbers stand for (the first, the second, the third, the fourth number) and what are their limitations please?...
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1answer
129 views

QGIS does not export heatmap SLD-files

At the moment I am creating a webmap with PostGIS and GeoServer. I want to style the data using SLD-files, because my data keeps updating. I have made SLD-files for Points and Polygons and that ...
2
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2answers
107 views

Heatmap-no data vs Zero

I am new to QGIS. I am working on creating heat map of bird diversity(data downloaded from ebird.org). The issue I face is that how to differentiate between: There areas where data is not available (...
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1answer
715 views

Understanding the Heatmap tool values in QGIS

Context I have been having a play around with the Heatmap (Kernel Density Estimation) tool in QGIS 3.4 and I realised that I do not really understand the output. My understanding was that you ...
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0answers
34 views

Normalized HeatMap Across Shapefiles

I will try to explain what I want to achieve. Consider that we have 2 shapefiles: A.shp and B.shp A.shp contains 100 points and in the circle at point (0,0) with radius 5 there are 10 points B.shp ...
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1answer
62 views

Heatmap of events, I can't get the right resolution

With QGIS 3.2.3., I'm trying to create a heatmap of a set of events (ie: bikes passing on a road). This is the original vector. What I'm trying to get is a heatmap with darker colour where a lot of ...
2
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1answer
2k views

Superposing two plots with Geopandas, with non fill colours in one of them

I would like to plot a map of the edges of the French departments, and the heat maps at the lower scale of the French IRIS. I read both shapefiles using GeoPandas. And now dep.plot(color="white", ...
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1answer
300 views

QGIS heatmap issue

I'm trying to create a heatmap on QGIS 3 from a layer based on a 20,000-entry CSV file with longitude and latitude values, using EPSG:4326 as the CRS. The layer itself looks fine, the markers are ...
0
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1answer
194 views

Create a heatmap for VISN level data in R

I am trying to create a heatmap for Veterans Integrated Service Networks (VISN) level averages. I have found these datasets containing shapefiles. I have the averages I want to plot based on the VISN,...
0
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1answer
168 views

Point averaging alternative to GeoServer WPS heat map transformation

I have a point dataset in which each point has a value for a "rating" field. Points distributions don't follow any pattern and can overlap at identical locations. My requirement is to generate ...
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0answers
48 views

Create new heatmap from another raster heatmap

I have an old heatmap raster image and I would like to produce a new heatmap layer. Could this be done, taking as an input the old heatmap image instead of point values? For example, suppose we have ...
1
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2answers
939 views

Heatmap Processing Exception in QGIS 3.2

I am working through training exercises with the Alaska training data using QGIS 3.2 on Windows 8. To create a Heatmap, I load the airports shapefile. I cannot find the Heatmap plugin using the ...
0
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2answers
462 views

CSVLayer doesn't show HeatMap in Angular 6

I am using ArcGIS JavaScript 4.8 API and I have integrated the CSVLayer to an Angular 6 application but it is not showing up any heat map. The legend shows that it is getting renderer data and heatmap ...
0
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1answer
502 views

Displaying animated data over time with the Google Maps API and JS

I'm building an app using Google Maps API and AngularJS. I've managed to display data both as pointers, clusters and heat maps and to reload the maps in real time when the data changes. Now I was ...
2
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1answer
190 views

Heatmap not working on FeatureLayer (ArcGIS JS API 4.8)

I tried my best but didn't get success to show heatmap on FeatureLayer with latest ArcGIS JavaScript API 4.8. My Code is located here. I used HeatMapRenderer to render the point on the map as the heat ...
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1answer
29 views

Old Geoserver install (“2.1.?”) will not validate Transformation element in Heatmap SLD XML

I'm stuck with an old, weird version of Geoserver in our production environment (circa 2011, installed in an opengeo-suite directory). It seems the WPS extension is installed. On my http://www.our-...
0
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1answer
864 views

How to implement a temperature map using leaflet/openlayers?

I am new on Leaflet/OpenLayers. I have been searching the internet for a way to create a temperature map like the one below, but I didn't succeed...the only thing I made was a classical heatmap, but ...
2
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0answers
234 views

Creating heat map with fixed max color value in QGIS?

I am trying to create a heat map using raster data in QGIS 3.0. I have made them previously in ArcGIS pretty easily, but I am having difficulties in QGIS. The difficulty I am having is setting a fixed ...
3
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0answers
147 views

Creating Heatmap in QGIS?

I'm having a problem with heat map in QGIS. I have two shapefiles with accidents (with and without victims). Every time I try to create a heatmap with them, it gets pixilated as you can see in the ...
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2answers
467 views

Error Heatmap plugin QGIS 3.2.0

My questions is about heatmap plugin in QGIS 3.2.0 I have my data in CRTM05 projection, it´s a metric projection to Costa Rica based in WGS84 Datum. When I try to run the Heatmap plugin, the running ...
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0answers
218 views

Visualising road segments as heatmap

I have some data on frequency of different road segments, and need to visualise it as a heatmap. Is there some utility/plugin for Mapbox or Leaflet which does this kind of visualisation. I am only ...
3
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2answers
611 views

Create line heatmap with QGIS

I have loaded my bike tours as .gpx files into QGIS. It already looks quite nice but I was wondering if it might be possible to create something similar to the strava heatmap with tools of QGIS. I ...
3
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0answers
196 views

QGIS 3 heatmap, on screen color ramp with data scale

When making heatmaps in qgis 3.0.1 i would like to place the color ramp with percentage and actual numbers for the bin borders on the map. Each marker under the color ramp represent a percentage of ...
1
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1answer
169 views

MapServer Kerneldensity empty map

I'm trying generate a heatmap from my PostGIS table, but my map is empty... Here is my config file: LAYER NAME feature_heatmap TYPE raster CONNECTIONTYPE kerneldensity CONNECTION "point_data"...
2
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2answers
1k views

Could not create destination layer

I am using QGIS 3.0.3 to make a heatmap using processing toolbox, kernel density estimation. The input I am using: I have generated centroids from polygons using Vector --> geometry --> centroids ...
2
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0answers
174 views

Limiting OpenLayers heatmap to vector feature boundaries

I'm looking to create a heatmap using OpenLayers, which is possible using the ol.layer.Heatmap class. However, I want to limit the visualisation of the heatmap effect to span just the underlying ...