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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3
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1answer
107 views

Mapping/visualising data with Long Tail?

I work with a dataset that gathers stats from all across a city. Each datapoint is of interest and worth visualising to our users, but there are a few parts of the city that significantly deviate from ...
-1
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0answers
23 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 ...
0
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0answers
21 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 ...
0
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0answers
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/...
1
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0answers
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 ...
0
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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 ...
8
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3answers
14k views

R : How to build heatmap with the leaflet package

I read a post about interactive maps with R using the leaflet package. In this article, the author createD a heat map like this: X=cbind(lng,lat) kde2d <- bkde2D(X, bandwidth=c(bw.ucv(X[,1]),bw....
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0answers
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 ...
1
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1answer
49 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 ...
3
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2answers
720 views

QGIS using the heatmapplugin from the console

I have to make a lot of heatmaps from csv's. Therefore I'm making a python script to run in the console. So far I can load csv's and save them as shapefiles. To get to the heatmapplugin I'm using the ...
1
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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
41 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 ...
1
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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. ...
1
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2answers
4k views

Using polygons to create heatmaps in QGIS?

I've been fiddling around with heatmaps on QGIS for a few days, but came across a small obstacle on my way. I have a dataset comprised of point data, corresponding to objects inside a 1 sq meter grid. ...
1
vote
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 ...
1
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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 ...
0
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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/...
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 ...
0
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1answer
75 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
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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 ...
0
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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 ...
3
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1answer
265 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 ...
2
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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? ...
0
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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 ...
30
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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
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0answers
136 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
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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 ...
0
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0answers
172 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
610 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
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2answers
938 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
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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 ...
0
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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 ...
1
vote
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"...
0
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1answer
295 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
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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 ...
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
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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
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1answer
243 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
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 ...
1
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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
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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 ...
2
votes
1answer
383 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
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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?...
3
votes
1answer
3k 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
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1answer
183 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
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 (...
1
vote
1answer
712 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 ...
2
votes
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", ...
1
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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 ...