Geographic Information Systems

Questions tagged [visualisation]

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The representation of data in a viewable medium or format

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31 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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1answer
40 views

Big polyline with Leaflet

I'm using Leaflet for a project where I track the path of an entity along the map in realtime. I made a buffer with the last 1000 points but it is visible only through a big zooming cause the points ...
4
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2answers
151 views

Displaying of flight altitude in QGIS 3.4

I have seen Google Earth screen grabs of GPS bird trackers that show the altitude as a "curtain" extending down to ground level from the track. Is this possible in QGIS?
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20 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 ...
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1answer
53 views

Visualizing lines in QGIS

I have installed QGIS and I would like to upload a .xls-file (or Access database) with 2 GPS points (starting point and ending point), a road name and some distances from the starting point, for ...
0
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2answers
117 views

QGIS visualisation of the flat earth

For a project, I try to visualize an image of the world map in QGIs print layout. However, in QGIS, the round earth is flattened in a 2-D flat map. How can I include the curving of the earth, so that ...
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1answer
20 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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2answers
35 views

Visualizing raster coverage of PostGIS in OpenJUMP?

I am new to OpenJUMP and I am trying to use this software for visualizing PostGIS rasters. I was able to display vector layers of PostGIS in OpenJUMP but I cannot display raster tables. Do you know ...
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0answers
23 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 ...
2
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0answers
44 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....
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2answers
45 views

Clipping raster exactly to outline of shapefile using QGIS?

I have clipped the shape I want but it looks messy with ragged edges. I want to remove these and have clean edges. I have tried doing this on QGIS but have come to the conclusion that it is not ...
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0answers
28 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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1answer
136 views

Google Earth Engine: Any way to have variable min and max in one visualization parameter?

What I mean is: I'm using the "3 standard deviations" value to visualize my data, but this changes seasonally so I need to update what the values actually are for each image. Can I create a "3 ...
2
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1answer
116 views

Visualisation: probabilistic rainfall forecast from CSV

Note: I have a basic idea of how shapefiles work & how to save maps as images. I'm a super noob on QGIS. I have this CSV which provides me details such as State Average rainfall (mm) Probability ...
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0answers
27 views

Isoscope, but for distance

An isoscope shows me how far I can get within a specific amount of time. Is there a similar visualization that shows me everything within X distance by roads of location? If so what would be the ...
0
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1answer
57 views

Can ArcGIS Online Wep Maps support symbols with leader lines for overlapping features?

I'm creating a web map with ArcGIS Online and have some points with the same address. I've seen some web maps where the overlapping points will separate with leader lines when you zoom closely to them ...
3
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1answer
96 views

How to track progress on a route?

I want to track and visualize the progress of a bus, as follows: I have the coordinates of each station as well as the coordinates of the bus, updated every 10 seconds The information is stored in ...
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0answers
62 views

Seeking open source tools to visualize map projection distortion? [closed]

A reference article on Map Projections contains the following figure: I think the images are created using Geocart, listed in Additional Resources section. I'm interested in trying to create ...
3
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1answer
81 views

Nested rules in QGIS 2.18

I work with QGIS 2.18. I have a polygon shapefile with two atrributes: id (unique for each polygon) and type. I visualize the shapefile using the "type" attribute, but I would like to add a nested ...
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0answers
25 views

Mapping a LinearFit to colors

Refering to EE>Examples>LinearFit (https://code.earthengine.google.com/598af3369de7a4845f0325030a66e0e1) I would like to check my understanding. On line 20 comment says: // Display trend in red/blue,...
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3answers
695 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, ...
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0answers
21 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 ...
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0answers
42 views

Reproducing raster color rendering from ArcMap in QGIS? [closed]

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" ...
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0answers
47 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
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1answer
381 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 ...
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0answers
258 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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1answer
55 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, ...
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0answers
53 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
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1answer
214 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 ...
1
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1answer
196 views

Visualizing 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
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1answer
35 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: ...
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0answers
66 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 ...
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0answers
16 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?
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0answers
98 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 ...
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0answers
258 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 ...
1
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1answer
152 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
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1answer
173 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 ...
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1answer
198 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 ...
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0answers
64 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
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1answer
220 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
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1answer
56 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 ...
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1answer
61 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
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1answer
358 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 ...
2
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2answers
204 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 ...
7
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0answers
292 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
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1answer
265 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 ...
3
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0answers
273 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
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1answer
110 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 ...
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0answers
47 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
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1answer
312 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 ...

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