Questions tagged [visualisation]
The representation of data in a viewable medium or format
312
questions
0
votes
0answers
9 views
Proper basemap/projection for displaying Alaska state boundary without distortion in ArcGIS Pro
This is a simple question - when working with basemaps in ArcGIS Pro, the default projection centers around the lower 48 states of the US. I am trying to do a basic visualization of a watershed within ...
0
votes
0answers
25 views
QGIS: How to visualise according to amount of answers in one polygon?
I am working with QGIS. I managed to join a CSV file to a layer containing zip codes. I would now like to visualise the zip code areas according to how many survey answers I have from that one zip ...
1
vote
1answer
32 views
How to display image from SQLite database at each point? (QGIS)
How do I display images at specific points, through the raster image marker symbology, from a standalone BLOB attribute table (SQLite) loaded into QGIS?
To briefly summarise: I have loaded a SQLite ...
2
votes
1answer
58 views
Linking points with lines for display in QGIS
I have 2 point shapefiles which contain lat and longs and I need to connect these with a line for display, not analysis. I am using QGIS 3.4.
To explain further, for one individual species/animal (i.e....
2
votes
1answer
22 views
Adding classes to raster visualization using QGIS
This is my first time working with rasters in QGIS. I'm working with a single band gray raster.
It has 5 classes. When I open it in QGIS, I can see the gray scale for the 5 classes. However, in the ...
2
votes
0answers
14 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 ...
2
votes
1answer
44 views
Point size based on one and color based on another attribute value in QGIS
I am pretty new to QGIS and have a question concerning the visual styling of points based on attribute values.
I've got point data with a few attributes. Now I want to style the displayed points ...
2
votes
1answer
38 views
Utilize standard visualuzation parameters for ImageCollection in Earth Engine
I've noticed that for many image collections in EE there's a set of properties describing default vizulatization parameters. For example, for Landsat LANDSAT/LO08/C01/T1_RT it is:
...
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1
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0answers
37 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 ...
0
votes
1answer
23 views
Simplifying Polygons and MultiPolygons for Visualization
I completed a computation with Canadian Census data and discovered, when trying to visualize the results with Bokeh 2.0.2, that the Polygon and Multipolygon paths were very high resolution with a ...
0
votes
0answers
19 views
Show data labels in Oracle Analytics Maps
Can anyone assist me in adding data labels in OAC (oracle analytics desktop ) Maps.
The image below shows state names ,I have a similar requirement to add names to the city.
I tried below json text ...
2
votes
0answers
44 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 ...
0
votes
1answer
37 views
Google Earth Engine - Dynamic Visualization Parameters
I made a script that calculates the maximum NDVI values of the last 100 days of an area. Therefore, depending on WHEN you run it, the resulting image.
Is there any straight straightforward method to ...
1
vote
1answer
34 views
How can I dynamically update raster visualization in python?
I want to visualize a very large raster image with python in an efficient way.
I have looked into datashader and found out that it is possible to dynamically update plots with millions of data ...
1
vote
1answer
31 views
Creating a layer from another layer's extent
Using QGIS, I have to map the general area of my project. However, this area depends on another layer representing sub-areas.
I know that I can use the dissolve tool on the second layer to get the ...
-1
votes
1answer
37 views
Plotting Bar Charts on top of Maps in R
I am trying to place bar charts on top of a map of the United States. For whatever reason, I receive this error:
> mapbars(x=x1, xllc=-110, yllc=40, barwidth=.5, maxheight=5)
Error in mapbars(x = ...
0
votes
0answers
27 views
Power BI Show Location Data and Custom Shape Maps
Is it possible to display location data (lat/long) with custom shape map and a street view background layer on a single map visual in Power BI?
After watching this source it seems that none of the ...
-1
votes
1answer
25 views
COPERNICUS_S2 ImageCollection Visualization parameters
I want to show you the ImageCollection from sentinel-2 that contains 12 images. However, I am not sure how to determine the Visualization parameters of ImageCollection.
Can someone can give me ...
0
votes
0answers
24 views
How to process large size satellite images without loading the entire image into the memory?
I am working with large size satellite images having size around 25 GB. My system is having 8 GB of RAM and gets entirely freezed after reading the image. What is the efficient way to process images ...
1
vote
0answers
37 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 ...
0
votes
1answer
53 views
How do I visualize a raster based on its properties using Google Earth Engine?
I am trying to visualize the USDA soil map based on the taxonomy great groups.
On the info page of the dataset, it seems as if this could be found in the properties. More specifically in grtgroup ...
2
votes
1answer
111 views
How to mosaic 3 different layers that do not overlap and make them into 1 layer
I have 3 different independent layers which I want to merge into one layer:
For creating those layers, I have calculted NDVI, calculted the mean and then I have created one layer that is lower than ...
2
votes
0answers
278 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,...
1
vote
1answer
369 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 ...
5
votes
2answers
294 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?
1
vote
0answers
41 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
1answer
57 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
votes
2answers
225 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 ...
1
vote
1answer
32 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 ...
1
vote
2answers
51 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 ...
1
vote
0answers
26 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
votes
0answers
67 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....
1
vote
2answers
55 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 ...
1
vote
0answers
33 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 ...
2
votes
1answer
324 views
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
votes
1answer
151 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 ...
0
votes
0answers
31 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
votes
1answer
85 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 ...
4
votes
1answer
144 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 ...
1
vote
0answers
81 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 ...
5
votes
1answer
123 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 ...
5
votes
3answers
1k 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, ...
1
vote
0answers
47 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" ...
3
votes
1answer
580 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 ...
1
vote
0answers
417 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
72 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
65 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
234 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
vote
1answer
306 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
votes
1answer
36 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:
...
