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Questions tagged [visualisation]

The representation of data in a viewable medium or format

3
votes
3answers
189 views

Assign a specific color to vector layer based on RGB codes in attribute table

I use QGIS and have a geological map for a large area. I present this after ID codes based on the geology ("Geokartnr" in photo). I want to use international/nation color codes for each rock type, ...
0
votes
0answers
17 views

Visualize variables using both marker size and color

I currently use colorRendererCreator.createContinuousRenderer() (docs) to visualize a variable from a CSV layer. I wonder is it possible to visualize another variable using the symbol's size? I ...
1
vote
0answers
31 views

Reproducing raster color rendering from ArcMap in QGIS? [on hold]

I have a 16-bit satellite geotif. These images can be visualised in a number of ways, depending on which stretch you apply. The default stretch applied by ArcGIS to these images produces a "natural" ...
0
votes
0answers
12 views

Change raster symbology in Google Earth

I have a raster with discrete terrain classes that I want to visualize in Google Earth (Pro). However, when I import the .tif, Google Earth gives it a black-white stretched symbology, as opposed to ...
3
votes
1answer
134 views

Visualizing vertical profiles from LiDAR point clouds in R?

I would like to visualize the vertical profiles of different LiDAR point clouds in different forest types. I have extracted the z-values from the LiDAR files with lidR and put them in a dataframe with ...
0
votes
0answers
76 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, '...
1
vote
1answer
40 views

Displaying pointcloud symbolized with RGB values in ArcMap?

I know that I can display a LAS dataset in ArcScene with RGB Symbology, but is there a way of doing this in the 3D View window in ArcMap? The LAS Dataset toolbar only has symbology for elevation, ...
2
votes
0answers
35 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 ...
4
votes
1answer
160 views

Symbolizing Isochrones in QGIS

I have generated isochrones for London based on my parameters. However, the isochrones by definition are overlapping polygons. I would like to show the different polygons of the isochrones using ...
0
votes
1answer
44 views

How do I visualize NDVI values?

Currently, I have the NDVI values, and I transformed it from [-1, 1] to [0, 255]. Now my question is how do I visualize either of these value? My first thought is to make a color map similar to the ...
2
votes
1answer
30 views

Presenting climate data over time?

I'm trying to map (using ArcMap 10.6.1) some climate change data and I'm not entirely sure how to classify the raster datasets. For this work I am focusing on four different climate change scenarios: ...
1
vote
0answers
45 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 ...
0
votes
0answers
15 views

Vertical 3D Point Cloud visualisation [duplicate]

Not LIDAR data. I have a file with x,y,z,c in a csv I want a 3D representation of the points, with colour defined by c The data is vertical profiles. Any idea?
0
votes
0answers
23 views

Georeferenced Depth Profiles in 3D

I am a Geophysicist. We often create 2D deptth profiles like so https://www.google.com/search?q=ERT+profile&safe=off&client=firefox-b-ab&source=lnms&tbm=isch&sa=X&ved=...
1
vote
0answers
77 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
0answers
156 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 ...
0
votes
0answers
174 views

How to add leaflet with threejs in QGIS plugins

How to add open street layer as background in qgis2threejs plugin. I am able to visualize buildings in 3d view but not able to add open street map or google map as background. It is possible in ...
1
vote
1answer
82 views

Polar projection polygon visualization issue

I am using Natural Earth coastline polygon (NE_10m_land), loaded from a shapefile in QGIS. All displays well (in, e.g., unprojected WGS84, EPSG 4326) - see below: But when visualising in a polar ...
4
votes
1answer
115 views

Mapping parliamentary results (categorical data) by share of polygon in QGIS

I'm trying to recreate the fill effect in this map: Where each polygon is filled based on the percentage of vote each parliamentary party gained. The author wrote "I converted the inner polygons into ...
1
vote
1answer
119 views

Visualizing extra bytes from LAS 1.4 in Potree?

I was wondering if it is possible to visualize the information that can be stored in the extra bytes of the LAS 1.4 file. This could be really helpful for validating features that have been calculate ...
1
vote
0answers
47 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 ...
1
vote
1answer
106 views

Exporting 16bit tiff sattelite imagery with the stretch/colour-balance applied by Arcmap?

Problem: I have 16-bit satellite GeoTIFFs from DigitalGlobe (QuickBird/WV2), which I wish to share with a colleague that does not have access to GIS software. When loaded into ArcMap, these ...
2
votes
1answer
47 views

Google maps slice arctic

I am developing earthquake visualization web-app for arctic zone using Google Maps JavaScript API. During the development I found Google Maps doesn't display map above approximately N85 degree, if you ...
-1
votes
1answer
35 views

Visualize an n-row and n-column matrix [closed]

I have a 275 rows and a 275 columns matrix,the value in the matrix is between 0.99 and 1.Each value is 6 digits after the decimal point,such as 0.993428,0.999657.It can be understood that this is a ...
3
votes
1answer
184 views

Displaying LiDAR data with too many points in ArcMap?

I have imported LiDAR data into ArcMap in the shape of a Las DataSet with twelve .las files (contains over 100 million data points). I believe the file itself is working properly. However, no points ...
3
votes
2answers
123 views

Making raster dots appear bigger when zoomed out on the map, QGIS

I would like to create a visualisation in QGIS that lights up raster points in a different colour. I have the rather points lit up but when I zoom out on the map, they look very small (they are 1km^2 ...
5
votes
0answers
172 views

Point cluster symbology for different categories without overlapping symbols

I'm trying to visualize crimes based on if the crime happened during day or night time. I've tried using the point displacement tool but I'm not satisfied with the results because the readability for ...
3
votes
1answer
176 views

QGIS point layer visualization

I have a point layer in PostGIS containing point locations of vehicles acquired by GPS over a prolonged period of time. The layer contains about 600k points. When loaded into QGIS points of this layer ...
2
votes
0answers
179 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
1answer
95 views

Visualize challenge: show origin of aggregated minimum r.series job

Using r.series with the aggregate minimum option I'm merging multiple viewshed results to visualize how much vertical space a development area has for new buildings. Meaning that a part of the height ...
1
vote
0answers
44 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
1answer
158 views

Difficulty drawing map lines across the international date line; Connection Map Visualization in R

I'm creating a visualization from country centroids to a few thousand coordinate pairs, and I'd like them to all be displayed unbroken and smooth on the same map, but I get these horizontal lines when ...
1
vote
1answer
84 views

Can't view fill of small leaflet layer when zoomed out

I have a leaflet map with lots of little circles to mark particular points. When zoomed in, they look great. I can see both the orange fill and the black outline. When zoomed out, however, I can only ...
2
votes
0answers
76 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 ...
1
vote
1answer
176 views

smooth (Lon, Lat, Value) data over shapefile / smoothed data on shapefile

I am trying to plot a data with (Lat, Lon) and a value in each location. What I need to do is to plot the data over a shapefile, represent each value with a different color, and smooth the values, so ...
1
vote
1answer
88 views

What does “faceting” mean in a geo/map context?

I saw some folks talking about "faceting" in relation to a map data display, what does this mean in general terms? Examples?
0
votes
1answer
875 views

Problems in producing animation GIF files in R

I am trying to produce a GIF file for my maps in R using gganimate but errors show up. devtools::install_github("dgrtwo/gganimate") library(ggplot2) data(sp6, package = 'aqp') p <- ggplot(sp6, ...
3
votes
1answer
79 views

Why are buildings shown with a distortion instead of directly from above?

I am pretty new to QGIS so I already am crossing a problem. I opened an open source map where you can see the buildings. The weird thing is that I see the buildings from an angle instead of directly ...
3
votes
1answer
207 views

How to put an SVG symbol in my rules-based symbology?

I have added a points layer in which I have to put different SVG icons, according to the column level. So far so good, the separation is according to the level using a default symbol, but I want to ...
0
votes
0answers
60 views

Displaying single polygon with different colors at same time in ArcMap?

I have a feature class of polygons (Districts) and a table of program themes (Education, Health, Civil Society etc). A single district can have multiple program themes and a single program themes may ...
1
vote
1answer
170 views

Raster visualisation in equal area projections

This is a rather conceptual question that i haven't been able to address yet. Let's say I have a raster file projected in an equal area projection (say Mollweide), with a cell resolution of 100km x ...
1
vote
0answers
103 views

How to animate daily data in QGIS time manager plugin by changing color of polygon instead of plotting markers [duplicate]

I 'm a beginner in QGIS in general and geo spatial data visualization. Given a vector type map (.tab file) of districts geographically spanning my business area and csv file containing weekly sales ...
15
votes
1answer
912 views

Examples of cartographic 'jokes'

In the July 2017 edition of Swiss Review, a publication for Swiss living abroad, the cover feature was on Swiss Cartography. With my interest in GIS this obviously sent me straight to the article. ...
0
votes
0answers
64 views

Visualize a dynamic raster in web application (preferably via Carto)

I'm wondering about the best way to visualize a dynamic raster in a web application, particularly Carto. This would involve performing map algebra calculations on the fly, and visualizing the ...
2
votes
1answer
68 views

Making several SVG icons using one layer in QGIS?

I need to make several different SVG icons in the same size. I am using a list with numbered SVG from 1 to 262: The obvious way is to make a different layer for each SVG. I have tried to change the ...
1
vote
0answers
143 views

Understanding 3D visualization difference between ArcScene and ArcGIS Pro?

For research on (3D) noise mapping, I calculated the noise levels that reach the facades of buildings. The first picture shows the houses in 3D that I have used to determine the facades for the noise ...
0
votes
1answer
269 views

Making rivers with higher Strahler/stream order wider in QGIS?

I have a river network and the Strahler order of all rivers in it. Now I would like to create a map similar to this one http://www.hydrosheds.org/, i.e. with rivers of a higher Strahler order being ...
1
vote
0answers
117 views

visualisation of asymmetric Directed acyclic graph [closed]

I have got a data set, it represents the time take taken to get between different nodes on a graph, I have a valid X/Y pair for each node location. The cost of getting between each node is asymmetric,...
1
vote
1answer
685 views

LASTools' lasview gives no output in QGIS? [closed]

I've downloaded the latest LASTools into the current folder in QGIS and have tried running lasview on a few .las files I have on hand. As far as I can tell the files are georeferenced but I am not ...
3
votes
1answer
62 views

How can I stack/pile point layers within administrative areas with qgis

How can I stack/pile point layers within administrative areas with QGIS. Close points (categorized) should not overlap in zoomed out map (and lose their position). Please see the visualization of ...