A heat map is a graphical representation of data where the individual values contained in a matrix are represented as colors

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12 views

Animated Heatmap on cartodb doesn´t work

I´ve been experienced a few problems with a animated heatmap I´m trying to create. The table I created has data on microcefalia in Brazil. The data shows the number of cases according to the week/days ...
2
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0answers
13 views

How to use weighted heatmap in CartoDB?

I would like to make the CartoDB heatmap use weighted values from a column in the dataset. I tried to find the option in the wizards and the docs but I couldn't find anything. Is there a way to do ...
0
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0answers
9 views

Urban heat island effect on rainfall [on hold]

Anyone have any information regarding urban heat island identification and to find out the relationship or the effect that UHI having on precipitation using remote sensing and GIS.
2
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1answer
26 views

Getting exact maximum daily temperature using remote sensing?

I have a problem I want to find the land surface temperature of Bangkok using landsat8. I have everything to get it but the problem is landsat images are obtained during morning time but the maximum ...
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15 views

About land surface temperature?

I have a problem I want to find the land surface temperature of Bangkok using landsat8. I have everything to get it but the problem is landsat images are obtained during morning time but the maximum ...
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0answers
26 views

Heatmap legend is possible?

I was wondering if it was possible to create the legend of heatmap layer in mapserver and openlayers 3? I am using both of them and will pick up one of them. regards
3
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1answer
79 views

Generating a heatmap with the twitter search term using cartodb api

I have a search box in my UI and a div for displaying maps.if i enter any term in the search box, say for example (chennai rain) does cartodb has any api or sample codes to generate a heatmap for that ...
0
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0answers
70 views

Plotting points with ArcGIS API for JavaScript

I have set some latitude & longitude values that I would like to show on my heated map using "Esri/geometry/Multipoint". I have specified some json data in a variable called mpJson that I would ...
1
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1answer
31 views

cartodb torque heat wizard disappeared

I checked yesterday and today (2nd of December 2015). The cartodb 'torque heat' disappeared from the wizard. Is it something known or temporary? Here is the information of what is (or should be) ...
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1answer
64 views

Creating Heatmap from attribute value of point features in ArcGIS for Desktop?

I've run through tutorial from ArcGIS on how to create a heat map using Spatial Analysis. Based on the example, point features are scattered around the map and we need do the following to generate ...
0
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0answers
9 views

Heatmap renderer geoprocess result?

I have a geoprocess that returns a featureset of points. from this i create a feature collection and from the collection i create a feature layer. when i try to attach a heatmap renderer to the layer ...
0
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0answers
20 views

How can I use a spatial analysis tool (vector to raster) and keep date/time data?

I have a large point file of 18,000 points. These include amount of contaminants found in water samples from each point on different sample dates. For example the columns of pertinent data might ...
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0answers
256 views

R : How to build heatmap with the leaflet package

I read a post about interactive maps with R using the leaflet package. Very interesting by the way. In this article, the author create a heatmap like this: X=cbind(lng,lat) kde2d <- bkde2D(X, ...
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2answers
103 views

Devide heatmap into meaningful clusters

I created a heatmap containing population density data. Now I want to figure out the hotspots of this heat map. In other words: Where are the biggest population densities in my map? My first thought: ...
0
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1answer
85 views

Creating thematic map where individual points are basically grid in MapInfo?

I want to plot a heat map which shows the different usage in different areas. But the thing is, in my original dataset, the data got truncated, which means that each point represents a small area ...
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0answers
28 views

Temporal Heat Map using Leaflet and ESRI

I am trying to create a temporal heat map using this template: https://esri.github.io/esri-leaflet/examples/visualizing-time-with-feature-layer.html I would like to show the symbology based on a ...
1
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1answer
68 views

Workarounds for heatmap plugin in QGIS?

In QGIS 2.8, the heatmap plugin got CRS broken. I updated to 2.10, now in the plugin the dialog is broken: it does not let you choose the format. I render layers for atlases with heatmap style. But I ...
2
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0answers
29 views

Dynamic heat map rendering in ArcMap

I have a large point dataset that I am publishing as a service. When zoomed out I would like to show the data as a heat map, only showing the actual points when zoomed right in. I know there are a ...
3
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0answers
165 views

Folium heatmap not displaying

I have an output file data.json [{"5403": 2, "9734": 1, "2565": 5, "5087": 2, "9061": 1, "1761": 4, "4811": 7 "1111": 5, "3891": 3, "1962": 3}] and a shapefile converted to geojson ...
1
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1answer
40 views

Setting draw order of labels in QGIS

We're having an issue trying to display labels UNDER a heatmap-styled layer, and can't figure out why they are always defaulting to the topmost position on the map. We're using the 'heat map' style ...
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1answer
48 views

Geoserver returns null

We have a geoserver 2.7.1 running as a war on tomcat7 in a Ubuntu 14.04 box. When asking for a WMS we get a java.lang.NullPointerException, but only when the map window is above certain size and only ...
0
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0answers
257 views

Add a heatmap as a layer to a map based on OpenStreetMap from C# WPF Visual Studio 2013

I need to show a map with some points (with lat/lon) of a heatmap on a map based on OpenStreetMap (OSM) . I have created a heatmap as a bitmap image by GHEAT.NET control lib ...
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0answers
25 views

Is there a lower bound on the std deviation for v.kernel in GRASS?

I'm using the v.kernel function in GRASS to create heat maps. I am able to generate an acceptable heat map using a std deviation of .2 and a several thousand rows and columns. After the map is ...
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0answers
58 views

QGIS crashes when trying to make heatmap

I'm a new user of QGIS. I need to make a heatmap for my thesis and I'm fairly certain I downloaded and set up the program correctly via online instructions. I imported the GDX points and used a Google ...
1
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1answer
124 views

leaflet - any way to add another layergroup on top of a heatmap layer?

Layering with z-index works when using layergroups - but is there any working way to have another layer with circles or other elements ontop of a layer with a heat-map? The heat-map seems to be ...
2
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2answers
90 views

Adding elevation data from contour lines to point layer using QGIS?

I want to calculate the number of vacant lots within 300m from a given building. My source file contains point layers of buildings and vacant lots. Here's a short description of my workflow. I've ...
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0answers
80 views

Output formats not showing in heatmap plugin (QGis 2.10.1 in ubuntu 14.04)

I just upgraded to QGIS 2.10 (using the debian repos) and the heatmap plugin doesn't show any formats in the dropdown menu. I'm able to open every raster format I have at hand and, of course, the ...
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0answers
21 views

QGIS Heatmap Plug: Filling a radius with one color

I'm using the heat map plug in and I want to fill in my circles with just one color that corresponds with a specific color along a gradient. My tinkering has not been fruitful and every tutorial I've ...
0
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3answers
88 views

Making heat map based on values assigned to polygon using ArcGIS Pro?

I am very new to ArcGIS Pro and I have loaded a SHP file with polygons and associated 'scores'. I would like to create a heat map based on these values e.g. a value of 1 would colour the polygon red, ...
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0answers
15 views

Problem with uMap heatmap

Does anyone know, how to get a heat map based on numerical attribute data points using uMap, not just the density of the points? Thankful for any response. Link to example map with identical cluster ...
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0answers
37 views

Proportional (graduated) symbols map using uMap

Good day. How can I make a web-map with proportional (graduated) symbols or the correct heatmap on the base of numeric data from attribute table using uMap? I have some points with data in columns ...
0
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0answers
40 views

Displaying heatmap with large number of dense points of interest in QGIS?

I am currently trying to make heatmaps of bird observations in an area. I have had a lot of success making the actual heatmaps for most birds, except the ones that are extremely abundant. I use the ...
4
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3answers
278 views

Heatmaps: right terms (isopleth vs choropleth, etc) and how to implement a value-based one that looks good?

NOTE: My original question was about interpolation methods, but I've found that I was actually asking the wrong question. Interpolation methods with Heatmaps and IDW are the least of my problems right ...
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0answers
60 views

How to create an percentage based SLD heatmap?

I am trying to create a generic heatmap sld based on percentages of the maximum value. Right now the legend is something like 0-456, 456-892,892-1109, etc. But I want this SLD to be generic so it is ...
1
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3answers
99 views

What's the parameters of heatmap formula on QGIS?

I want to calculate the values by hand to know which parameters effect the result in the image, but i couldn't able to do that because i didn't understand it. I tried with 500 mt and 1000 mt radius ...
0
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1answer
63 views

Merge shapefiles heatmap

I have to merge few shapefiles into one and create a heat map out of it in qgis. I'm a first user of the QGIS, I tried to do it there: vector-management tools-merge files into one, but it kept to make ...
2
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1answer
36 views

QGIS Heatmap values change when imported into ArcMap?

I am creating a heatmap layer from QGIS and importing the TIFF into ArcMap. When I import the file into ArcMap I notice that values are different. For example the max value in QGIS is 8.92454, but ...
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0answers
74 views

How to convert poly-line contour feature class into heat map displaying heights [closed]

I'm looking for a way to be able to convert contour data (as lines) into a heat map that would display the data warmest at the highest points and coolest at the lowest. I have access to QGIS, ArcMap ...
2
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0answers
74 views

Heatmap on globe - distortion problems

I want to display a heatmap (png) on a globe in an android app. The heatmap is generated programmatically. The heatmap consists of colored circles. I upload the png to geosserver and display it as ...
1
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0answers
64 views

How do I fix my SLD tile heat map when it comes up as dots?

I am currently working on an SLD heat map on GeoServer that uses tiles.There is a point in each tile with the data. From far away, the heat map looks normal. But up close it just becomes little ...
0
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0answers
116 views

How to customize heatmap color on pre decided constraint values?

I am working on heatmap and situation is i have to change the color of heat map marker on the basis of some constraints and the color should change according to those basic constraints values. My ...
0
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0answers
37 views

stop leaflet.heat from redrawing on zoom

I'm working with leaflet.heat, which redraws the heat map based on the zoom level. Best I can tell, it resamples the points within the extent of the map and redraws based on the intensity of the ...
2
votes
2answers
312 views

Heatmap using Kernel density estimation

I have been trying to generate heatmap using kernel density estimation from python console in QGIS. This is command i'm using: processing.runandload("saga:kerneldensityestimation", ...
1
vote
1answer
197 views

Heatmap failing in QGIS (2.8.2-Wien)

I am super new to QGIS so I may be doing something really dumb, but it doesn't seem to work to create a heatmap in QGIS Desktop 2.8.2 (just downloaded this yesterday so I think it is the most current ...
1
vote
1answer
330 views

Python heatmap from data

Is it possible to make something like this using python ? How should i best structure my data in order to make this map and what should i use to draw it. Code is not necessarily required. I just need ...
2
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0answers
66 views

Interpreting results of QGIS intepolation and Heat map from point shapefile

I have taken a step interpolation and heat map of the data point shapefile (building Centroid) with QGIS ver-2.8.1, as shown below. My question are: What is the difference of the two methods? How ...
2
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0answers
75 views

Server-side map generation from postGIS database

I have loaded some OSM data into a postGIS database, using imposm. Now using this data base, I computed a value associated to every point of the map (could be anything, real-estate average price or ...
1
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0answers
112 views

Torque heatmap on CartoDB with time control

I am interested in create a Torque Heatmap in which you can see the events occured every year in one step, for twelve years in total. Every event has a aggregation or ponderation value (they are the ...
7
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86 views
+50

Output formats for QGIS Heatmap plugin not appearing in drop-drown in Ubuntu

I've been trying to use the heatmap plugin on QGIS (2.8.2) on Ubuntu(14.04) but the drop down for the output formats doesn't get populated. Selecting the drop-down allows me to press OK on the plugin ...
0
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1answer
122 views

Error loading heatmap layer using cartodb.js

I'm trying to load a heatmap layer using cartodb.js, but it is failing whether I use createVis or the manual way. Using createVis: cartodb.createVis('mapDIV', 'https://PATH/viz.json'); Building a ...