Questions tagged [visualisation]

The representation of data in a viewable medium or format

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4 votes
0 answers
423 views

Visualize 3D polygon and TIN stored in postgis

How can we visualize 3D polygon and TIN data stored in POSTGIS? My input is 3D mesh data generated by AR application. I have created polygon by adding all the vertices of an object. I can visualize my ...
4 votes
0 answers
6k views

HDF5 files in QGIS

I am working with GPM GMI precipitation data that is stored in the hdf5 data format. All I am trying to do is import and visualize the data in the QGIS environment. I can import the precipitation file ...
4 votes
0 answers
172 views

How to visualize fuzzy/approximate locations

I need to visualize a mixture of accurate and fuzzy/approximate locations on a web map. The user should be able to instantly recognize approximate locations from the marker used. Are there any best ...
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3 votes
0 answers
172 views

Creating building's shadow over buildings in QGIS

I want to create a map with the shadows projected from the building. There are a few methods to create this, but all of them are not so accurate. The Translate Method has the problem that is not ...
3 votes
0 answers
993 views

QGIS displaying polygon that is crossing the 180 meridian

I have the following table create table schema.table ( id bigint, geography geography ); with the following geography INSERT INTO schema.table (id, geography) VALUES (1, '...
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3 votes
0 answers
252 views

Visualizing variability in the size and shape of polygons

I am working with a data set of area restrictions imposed by criminal courts. These restrictions ban a person from entering a demarcated area. These restrictions vary in their size, shape, and ...
2 votes
1 answer
166 views

View vector GeoServer line layer in Leaflet

I have simple line layer created based on shapefiles. It can be viewed in GeoServer with OpenLayers preview: I also can be imported and correctly viewed in QGIS. I tried to visualize this layer over ...
2 votes
1 answer
268 views

Rendering three-composition raster map with ternary colormap using R

Say there are three raster maps, representing percentages of sand, silt and clay respectively. The three values for each cell are hence summed up to 1. I want to use one raster map to characterize the ...
2 votes
1 answer
2k views

Folium and timestamped GeoJSON issue , not reading the data correctly

I am having issues with Folium and using TimestampedGeoJson. I have the following dataframe structure below. I am trying to display this data with Folium and a time slider to be used on the date field:...
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2 votes
0 answers
48 views

How to deal with extreme values messing up Graduated colours? (ArcMap)

Is there an easy way to deal with extreme values messing up the Graduated colours of a map and skew the intervals in such a way that the colour ramp still makes visible sense? I have a map displaying ...
  • 41
2 votes
1 answer
224 views

Visualizing year of forest loss in Hansen/UMD/Google Global Forest Change with QGIS?

I am trying to visualize the loss of forest cover for the year 2000-2012 with the Hansen database (http://earthenginepartners.appspot.com/science-2013-global-forest/download_v1.7.html). However, after ...
  • 21
2 votes
0 answers
2k views

Plotting GoeDataFrame on a raster

I have a bunch of polygons which I loaded from a shapefile into a fields GeoDataFrame: geometry raster_val 0 POLYGON ((8.56799 47.80800, 8.56799 47.77200,...
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2 votes
0 answers
110 views

Plotting Geopandas Gallery example fails?

I have been having trouble getting the figures from the example provided in Geopandas Gallery examples. When I ran these scripts in Jupyter console: import geopandas import geoplot import matplotlib....
2 votes
0 answers
102 views

Visualizing custom geo data on WFS featurecollection

I have some data that I want to visualize over on an interactive map. Basically I want to highlight certain buildings based on the data that I have. My data consists of coordinates and I need to match ...
2 votes
0 answers
97 views

Show layer results in canvas for QGIS 3.0.2?

For both vector and raster layers, previously in QGIS 2 there was an option asking whether you want layers to be shown in the canvas ("show result in canvas"). Now in QGIS 3.0.2 "Girona" this option ...
2 votes
0 answers
468 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 ...
2 votes
0 answers
120 views

Visualizing Strahler-Order bigger than a specific value

I try to visualize the Strahler-Order bigger than 8 using raster calculator. I changed the style of the raster by changing the render type to singleband pseudocolor and, in the colors selector, I ...
2 votes
0 answers
300 views

Visualize rasters as stacked layers

I have several raster files that are basically different indices produced with the same DEM. I want to visualize the raster layers in a way that the audience can see that they are stacked. I am ...
  • 121
2 votes
0 answers
317 views

How to visualise change matrices over time

i've hit a bit of a tricky visualisation issue; I am quantifying some land use and land use change (LULUC) over a number of years. Typically, for data going from year to the next, a land change ...
  • 1,581
2 votes
0 answers
283 views

How to create a legend for quantitative visualization with increasing icon size?

I am trying to find a way to do a map and legend like this: I am using QGIS 2.6 Brighton. The only way was to do a pie chart but I think it's not possible to create classes. I can create circles with ...
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2 votes
0 answers
831 views

Why aren't my CartoDB map layers loading?

We have built our own instance of CartoDB on our servers, setup production environtment successfully. We can upload shape files, table and map view works great. When we trying to create ...
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2 votes
0 answers
110 views

Visualize given temperatures on image/map/plane

I am looking for a way to visualize some data of the form : latitude longitude temperature as image(s). Have many of these 3-tuple lines uniformly distributed on a region. Ultimately, I am looking ...
  • 121
2 votes
0 answers
310 views

Developing maps using Tile Mill and Processing(.org)?

I had a small question. I actually would like to build an application which is very similar to this but as a map and not on “Multi touch Table Top”. The functionality I need is Plot different ...
1 vote
0 answers
13 views

Visualizing German ALKIS LoD2/cityGML data in 3D map view QGIS 3.22

I have a dataset containing all relevant information to build a 3D building (https://ldbv.bayern.de/produkte/3dprodukte/3d.html) with one layer containing roof information (incl. orientation and slope)...
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1 vote
0 answers
37 views

Automate layout design on ArcGIS Pro

I have 100 different layouts, each zoomed to different polygons on the map. I would like to add two accompanying images, that are unique to each layout and positioned as shown in the screenshot below. ...
  • 21
1 vote
0 answers
42 views

Find min and max values of a field (column) in a feature layer

I am using ArcGIS API for Javascript in a Nuxt application and I would like to find the max and min values of a field in a feature layer hosted on ArcGIS. How to do that? Here is the code. The values ...
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1 vote
0 answers
66 views

3D visualization for irregular boundaries shows an infinite height

I am new to GIS. I am trying to visualize a DEM with irregular boundaries. When I am trying to show it in 3d via 3D map or Qgis2threejs, the boundaries get an infinite height that I can no longer see ...
1 vote
0 answers
36 views

Symbology on joined variables not showing up on map in QGIS

I am trying to add a certain styling to points I have on the map. I have set a Rule-based styling with a range added based on a different variable. Both variables were added to the point DB from a ...
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1 vote
0 answers
554 views

Remove default OpenStreetMap tile layer in Leaflet - Folium?

I have multiple maps in my Folium map (map1 and map2) however, I see OpenStreetMap as the default option. I want to remove the OSM option altogether and keep just my two custom layers. If I set tiles ...
1 vote
0 answers
220 views

3D visualization of geological data in QGIS

I'm checking the possiblities of 3D visualization in QGIS for geological data. At the moment I am trying to visualize the surface raster and the sub-surface rasters together in a 3D View. It should ...
  • 63
1 vote
0 answers
263 views

Using rasterio and matplotlib to visualize Sentinel-1 data

I'm trying to work with satellite data for the first time and running into problems. I find the documentation about using Sentinel-1 data in Python lacking, but maybe I'm searching for the wrong ...
1 vote
0 answers
91 views

QGIS Legend for multi-band Raster

Is there a simple way to generate labels for a multiband Raster in QGIS like it is implemented as Default in ArcGIS? I want to write a Variable Name of each Band in the legend ArcGIS example:
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1 vote
0 answers
77 views

Filter symbols in QGIS similar to labels for anti-collision?

I am using the GeoNames data in a PostGIS 2.5 table to populate cities on a map in QGIS, but with millions of entries it is very crowded with overapping making it useless without some sort of ...
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1 vote
0 answers
33 views

Visualizing overlay of 6 point data sets using ArcMap

I have a visualization question. Using ArcMap 10.6, I would like to overlay six point datasets in a way that synergies and differences can be quickly seen by people who have no idea about GIS ...
  • 131
1 vote
0 answers
106 views

Creating isochrones in a travel-time map

I'm working on building a travel-time map using time-expanded model and Java. I calculated the reachable points with Dijkstra's algorithm from a start point and within a specific travel time and I ...
1 vote
0 answers
92 views

Cesium | Any Alternatives to 3dtilesets to visualize point cloud data?

I'm in the early stages of developing a web-based visualization for multiple GIS data sources (imagery, vector data sets, terrain, point cloud...etc). I am using the Cesium javascript library for ...
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1 vote
0 answers
186 views

Merging overlapping GeoJSON LineStrings (Tippecanoe) and add visualization

I would like to merge overlapping GeoJSON LineStrings and visually style merged LineString. I have a database of GeoJSON LineStrings which represent routes people drove. I would like to visualize ...
1 vote
1 answer
129 views

Unable to activate analytic asset in satellite Imagery

I was trying to import the map of Melbourne. I was able to fetch the details from API coordinates but when i am trying to check the analytic asset status, it is returning inactive. # extract image ...
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1 vote
0 answers
35 views

Visualizing Subplot Overlap

I have a bit of trouble visualizing my data. I have a dataset with 60 minutes of seismic signals and i determined the signal source areas. My goal now is to find out how the results change using ...
1 vote
0 answers
47 views

Earth Engine Image Collection Reduction Glitch

I am having a visual glitch when adding an image as a band to the map. The glitch consists of a vertical line which is not rendered at all. The more I zoom out of the map, the more this line increases ...
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1 vote
0 answers
218 views

Create New Custom Symbology with QGIS

I am using QGIS for GIS maps, and data visualization. There are very few symbols available for marker, line and polygons. I want to create my own symbols, that i can later import into QGIS and then ...
1 vote
0 answers
134 views

How do I visualize a many-to-many relationship?

Preferred software use: ArcGIS Pro and ArcGIS Online For a client I have to visualize a building plan that has a 'many-to-many'-link with attribute data. As with many-to-many relationships; sometimes ...
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1 vote
0 answers
59 views

How to visualize values distributed on the line on its parallel (curves problem)

I assign some value for each of points distributed equally on origin line, then I want to move this values to its paralllel line, by splitting those parallel line into equal pieces (which amount will ...
1 vote
0 answers
458 views

GIS data visualization

I have a huge data set with geolocation information. I am trying to visualize the data but the tools cannot handle such a big graph. Size of the file is about 5GB and has more than 3 million rows. ...
1 vote
0 answers
150 views

Matching paths based on both GPS pathways and the respective time recorded

I have two database tables containing individual lat-long records of vessels moving around in waters for a given time period: Database A contains a set of records of a particular type of vessel that ...
1 vote
0 answers
425 views

Convert a data frame in R to a polygon for viewing in Google Earth

I have a dataframe in R which contains numerous columns of lat long coordinates. Each row of the data frame contains 9 x lat/long coor points. I wish to plot each of these rows in Google Earth using ...
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1 vote
0 answers
242 views

Georeferencing postcodes into bubble map with Cartodb

I have recently discovered Cartodb and I am trying to create a bubble/thematic map of postcodes. I have a csv document with one column of postcodes from around the UK. I have uploaded the dataset and ...
  • 111
1 vote
0 answers
50 views

Display polygon colours as percent reflectance of sunlight

I have a set of polygons which I would like to display in different colours. The only information I can give on the colours is the percent reflectance of sunlight in different channels, e.g.: B: 0....
1 vote
0 answers
531 views

How to handle Point Data with date ranges

I am running into an issue with the time sliders in Leaflet. It appears that most all of the sliders developed for Leaflet operate on the assumption that each record in your data layer has a specific ...
1 vote
0 answers
129 views

How to clearly display a huge shapefile with many point features?

I have two vector shapefiles, each with 54,000 features. When it's zoomed in on a small region, I can clearly see the feature colors: but as I zoom out, this is what I get: Any suggestions on how to ...