Questions tagged [visualisation]

The representation of data in a viewable medium or format

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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, '...
Michael's user avatar
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4 votes
0 answers
491 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 ...
fastRunner's user avatar
4 votes
0 answers
8k 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 ...
Kyle Peterson's user avatar
4 votes
0 answers
185 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 ...
chriserik's user avatar
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3 votes
1 answer
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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 ...
tunar's user avatar
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3 votes
0 answers
299 views

Making bivariate symbol map in QGIS

I am making a bivariate symbol map in QGIS in which, the size of the symbol depends on one variable whereas the color on other. For example, I have taken India data from https://simplemaps.com/data/in-...
rgt's user avatar
  • 107
3 votes
0 answers
231 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 ...
MarceloBaliu's user avatar
3 votes
0 answers
256 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 ...
William Damon's user avatar
2 votes
0 answers
489 views

Visualize uber h3 hexagon in Power BI

I have two columns. One is h3 index and other is quantifying column. I have converted each hexagon into WKT. I am not sure how I can display hexagons over a map in Power BI.
ester2025's user avatar
2 votes
0 answers
181 views

QGIS visualization of Pleiades image is gray and fixed only when copying style

I have airbus Pleiades images which has 4 bands - B , G , R and NIR. The image was reprojected (4326) and resampled (50cm) using GEE as following: task = ee.batch.Export.image.toCloudStorage( ...
ReutKeller's user avatar
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2 votes
1 answer
315 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 ...
user2727167's user avatar
2 votes
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2k 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 ...
Vedant Modi's user avatar
2 votes
1 answer
3k 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:...
Bob's user avatar
  • 21
2 votes
0 answers
65 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 ...
Eumenes's user avatar
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2 votes
1 answer
471 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 ...
Cris's user avatar
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2 votes
0 answers
137 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....
carto-beginner's user avatar
2 votes
0 answers
143 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 ...
SilverTear's user avatar
2 votes
0 answers
98 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 ...
user126540's user avatar
2 votes
0 answers
584 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 ...
arpanmangal's user avatar
2 votes
0 answers
145 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 ...
Mohamad Reza Salehi Sadaghiani's user avatar
2 votes
0 answers
403 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 ...
Xiaoyu Lu's user avatar
  • 121
2 votes
0 answers
352 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 ...
Sam's user avatar
  • 1,591
2 votes
0 answers
287 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 ...
Felix's user avatar
  • 21
2 votes
0 answers
842 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 ...
Prabu's user avatar
  • 248
2 votes
0 answers
112 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 ...
LyK's user avatar
  • 121
2 votes
0 answers
313 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 ...
user1089553's user avatar
1 vote
1 answer
134 views

Visualizing features from properties of a feature collection

I would like to know how to visualize features (points) situated in the properties of feature collection that was obtained after applying 'spatial joins' on primary collection ( protected areas (...
genny's user avatar
  • 11
1 vote
0 answers
323 views

Making map with marginal graphics like rasterVis::levelplot(margin=T)

I love rasterVis::levelplot(margin=T) because its marginal graphics show the column (x) and row (y) summaries of the Raster object. I think it is very helpful to visualize the raster. Package ...
jackywang's user avatar
  • 309
1 vote
1 answer
143 views

Assigning colors to classes using conditional statements using GEE

I am trying to assign colors to each of the class by checking the conditions (condition on - pixel values). But it doesn't check the else statements, it only checks the if: if (image.gte(0.1).And(...
user14's user avatar
  • 59
1 vote
0 answers
307 views

Integrate pydeck layers in Folium map

The pydeck library is a set of Python bindings for making spatial visualizations with deck.gl, optimized for a Jupyter environment. folium builds on the data wrangling strengths of the Python ...
Ceraunophile's user avatar
1 vote
0 answers
152 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. ...
Jessie's user avatar
  • 31
1 vote
0 answers
96 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 ...
Maxime's user avatar
  • 111
1 vote
0 answers
153 views

QGIS Handling Heatmap Data Range

I have a grid of hexagons with data (ranging between 0 and 1) and, using the centroids of the hexagons as a base, I would like to visualise the data as a heatmap. On the technical side, this works ...
ZHTank's user avatar
  • 93
1 vote
0 answers
137 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 ...
Aida mehrpajouh's user avatar
1 vote
0 answers
569 views

Dashboard QGIS displaying specific information from attribute table

I'm using QGIS 3.22. Biatowieza. For a better visualization, I would like to create a little dashboard, where I only display 2-3 colums from the attribut table. Similar to the "identify Objects&...
rtaani's user avatar
  • 557
1 vote
0 answers
45 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 ...
starkin's user avatar
  • 29
1 vote
0 answers
438 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 ...
Nicola's user avatar
  • 83
1 vote
0 answers
148 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:
user83420's user avatar
  • 163
1 vote
0 answers
138 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 ...
Bytor's user avatar
  • 236
1 vote
0 answers
48 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 ...
nora's user avatar
  • 131
1 vote
0 answers
151 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 ...
Mohamed Gafar's user avatar
1 vote
0 answers
142 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 ...
user890's user avatar
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1 vote
0 answers
241 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 ...
DarkSideOfTheMoon83's user avatar
1 vote
1 answer
140 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 ...
Nayak's user avatar
  • 21
1 vote
0 answers
55 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 ...
Philip Srnck's user avatar
1 vote
0 answers
54 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 ...
cdcerv's user avatar
  • 65
1 vote
0 answers
272 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 ...
Ahsan Mukhtar's user avatar
1 vote
0 answers
183 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 ...
MoekToe's user avatar
  • 143
1 vote
0 answers
64 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 ...
inż. Doman'ski's user avatar
1 vote
0 answers
474 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. ...
Sitz Blogz's user avatar