Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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.

0
votes
1answer
41 views

Data without geometrics. How to use the data? [on hold]

I'm currently doing a project for my company. I have to visualize data from the company. The data that's available is without geometrics. The table includes: name of person, day of birth, country they ...
1
vote
1answer
74 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. ...
0
votes
1answer
36 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/...
2
votes
2answers
733 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 ...
0
votes
1answer
73 views

CartoDB - Non-animated heatmap, but won't let me layer under

I have a simple heatmap layer that is not animated. I want to move a choropleth layer above that heatmap layer, but Carto will not let me, as it thinks my Heatmap layer is animated. Is there any way ...
0
votes
0answers
29 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 ...
0
votes
1answer
105 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 ...
3
votes
1answer
263 views

Collecting Thermal Map Data?

I am curious about making a thermal map to display where the hot spots and where the cool spots in a community are. Obviously the roads will be hot and the shaded areas with trees will be cool but ...
1
vote
0answers
19 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? ...
0
votes
1answer
2k views

How to make the value showing on a leaflet heatmap like this one?

I'm attempting to use leaftlet.js, and heatmap.js (github.com/pa7/heatmap.js/) following this example: But I want to show the value on the heat map like this crime page (with two options on: "Crime ...
1
vote
1answer
33 views

How to create heat map animation based on point-shapefile with data attribute in ArcGIS?

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 ...
0
votes
0answers
23 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 ...
30
votes
9answers
15k views

Creating polyline-based “heatmap” from GPS tracks?

This winter I am planning to track my downhill skiing/snowboarding using a GPS. Most of my riding will occur at the same resort. I would like to be able to create a sort of "heatmap" that shows the ...
0
votes
0answers
88 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/...
0
votes
0answers
36 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 ...
0
votes
0answers
117 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 ...
3
votes
2answers
531 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 ...
1
vote
2answers
798 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 ...
2
votes
0answers
60 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 ...
1
vote
1answer
93 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
votes
0answers
51 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 ...
1
vote
1answer
157 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"...
0
votes
1answer
215 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', ...
1
vote
0answers
147 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 ...
65
votes
5answers
43k views

Building effective heat-maps?

Using ArcGIS, QGIS, Grass, and/or GVSIG: What are some of the tools and processes involved in building effective heat maps? What are the plugins involved? What are the major data requirements? What ...
6
votes
1answer
4k views

Creating heatmap (concentration of points) in QGIS?

There was already How to build effective heat-maps? from 2010 where the answer was basically "use QGIS Heatmap plugin". I've also read on QGIS webpage that it is now "implemented as a native C++ ...
2
votes
1answer
229 views

Creating custom legend to map to custom css torque heatmap

I'm hoping someone can help me with html to create a legend that maps to a custom heatmap I made using the style CSS. When I try using the default legend, it neither maps to the right custom colors, ...
1
vote
2answers
411 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 ...
1
vote
1answer
4k views

Adding Basemap on QGIS?

I'm entirely new to QGIS and mapping services in general. I add my data via CSV to create a new map layer (following the QGIS heatmap tutorial), I select Longitude in my X coordinate, and Latitude in ...
1
vote
0answers
114 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 ...
2
votes
1answer
358 views

QGIS heatmap classification and symbology?

I want to create a heatmap that doesn't show raster cells that have the value 0. I have 5 classes of which the 0 values have no colour (transparent). Now values between 0 and the first value (124.66......
0
votes
1answer
55 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?...
3
votes
1answer
2k views

Creating custom SLDs for Heatmaps using GeoServer

im trying to figure out whether it is possible to create a custom SLD to style heatmaps provided by GeoServer depending on dynamic data input. Already checked out the Rest api and some related ...
0
votes
1answer
162 views

How to filter a heatmap layer with QGIS Atlas?

I have a dataset with student route node collections from 20 different schools that I want to drive heatmap atlas pages with. Can the heatmap layer in QGIS have a filter applied, either based on the ...
2
votes
2answers
79 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 (...
1
vote
1answer
503 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 ...
1
vote
1answer
763 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", ...
1
vote
0answers
28 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 ...
0
votes
1answer
52 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 ...
0
votes
1answer
204 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
votes
1answer
169 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
votes
1answer
107 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 ...
0
votes
2answers
419 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
votes
0answers
43 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 ...
0
votes
1answer
454 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
votes
1answer
173 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 ...
1
vote
1answer
27 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-...
6
votes
2answers
461 views

how to aggregate the rates, represented by points, within X radius

the point represents rates like 10%, etc. (this was also pretty clear from 2 years ago) -- been trying to do this for 2 yrs... the points dont represent numbers of events since they are rates (...
0
votes
1answer
644 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 ...
0
votes
0answers
103 views

Heatmap Tool in QGIS v3.0 not working

I am trying to use the Heatmap tool in QGIS v3.0 but keep getting the following error: I have tried installing the plugin - but it doesn't appear in the list. I can't find the option under Processing ...