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Questions tagged [visualisation]

The representation of data in a viewable medium or format

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2 votes
0 answers
41 views

Fully filling vector layer with polygons without dissolving the current polygons in QGIS

I have a vector containing flow paths for a specific area, with values ranging from 2-4. I want to fill in the rest of the area (to the red line boundary) with another/more polygons with a value of 1 ...
ashlaff's user avatar
  • 21
0 votes
1 answer
18 views

I can't get this GEE app to work when I publish it

I am very new to GEE. After the app is published, I access it through the link and get a flat map centered in the USA without any of the options programmed in the script. It's basically a study on 12 ...
Martín Francia's user avatar
1 vote
0 answers
41 views

Calculate the frequency of transitions between geographical points

Background: I have a data set of individuals moving between different fixed locations and I want to visualise the movement between them. I know how to draw lines between the points that an individual ...
Smerla's user avatar
  • 390
0 votes
0 answers
21 views

3D interpolation visualization with ArcGIS Pro

I would like to use the result of a global polynomial interpolation as a base for visualizing a 3D model in the local scene view in ArcGIS Pro, but I always get back a flat layer in the local scene ...
and2103's user avatar
1 vote
1 answer
105 views

Cannot plot geometry on a CSV file (Python)

I'm trying to plot a data about Istanbul's metro lines. The actual data is in CSV format and all of the data is in string. The data is from Istanbul Metropolitan Municipality (https://data.ibb.gov.tr/...
Hilmi Emre's user avatar
3 votes
1 answer
82 views

Displaying two attributes of line vector layer with same color ramp in QGIS

I have a QGIS line vector layer that contains two attributes: "attr1", "attr2". I want to display it as shown below. The same line geometry two times with an offset in both ...
588chm's user avatar
  • 615
8 votes
1 answer
254 views

Applying pattern only into strip inside polygon border in QGIS

I need to reproduce the style of a raster layer on a polygon layer like this: where you see in red the hatching inside the red contour of the polygon. I tried hatched line in the symbology, but I ...
dmjf08's user avatar
  • 1,273
0 votes
0 answers
33 views

How to show point data as a colored map?

Im doing one, I would say, simple analysis, but Im rookie when it comes to GIS, so I need help. So, I have data of CPT (cone penetration test) which our firm conducted over the years and within that ...
Marko Boričević's user avatar
0 votes
1 answer
29 views

Visualize reprojected layer

I have a composite image (medianComposite) which is reprojected to CRS:'EPSG 32643'. The layer before projection can be visualized on the map. The projection has changed after reprojecting, but the ...
rekha's user avatar
  • 11
3 votes
1 answer
445 views

Control Layer Order/Z-Index of Custom DivIcon() Marker in Folium Map

I'm working on a project where I'm using Folium to create an interactive map in Python. I want to use a marker that can visualize directional data; however, Folium doesn't seem to offer any and I had ...
Austin's user avatar
  • 128
0 votes
0 answers
52 views

How to visualize affine transformed data in Python

I have Mavic 2 pro drone image, and try to apply georeferencing this JPG data. With the help of VerticalPhotoPlacer code, I first generate JGW file, then convert JPG data to GeoTIFF data.The code is ...
JOEY's user avatar
  • 13
0 votes
0 answers
39 views

Visualization Issue when Overlapping Change Detection Map and Shapefile in Python using Rasterio and Matplotlib

I'm encountering a visualization problem while attempting to overlap a change detection map with a shapefile using Python, Rasterio, and Matplotlib. The change detection map is generated from a matrix ...
JCV's user avatar
  • 139
0 votes
0 answers
53 views

Cross section automation & overlay

I'm trying to automate and visualise the frequency and different type of road corridors along an existing route. The route spans multiple kms and I'm trying to show the predominant types of corridor ...
Joseph Monk's user avatar
1 vote
1 answer
84 views

Barplot with a basemap as a background

I have some data as a pandas DataFrame with values associated with longitude. I have plotted it as stacked bars like this: A subset of the data as an example via df.to_dict(): {'Commodity driven ...
Jan Pisl's user avatar
  • 726
2 votes
1 answer
50 views

Different visualisation in attribute table

The visualisation in the attribute table is different for fields with the same data type (some are greyed out and the values have different positions) Any suggestions?
Nabil's user avatar
  • 31
0 votes
1 answer
538 views

I am unable to open raster using rasterio

I am trying to open a raster file that I have downloaded using rasterio. It is a satellite image raster file of part of UBC in my data folder which I downloaded from Abacus Data Network. the However, ...
Williams Adaji-Agbane's user avatar
3 votes
2 answers
343 views

Creating topographic "layer cake" map a.k.a. Tanaka contour in QGIS

I'm wondering if there is any way to create a map similar to the image below. Basically, it would be the contours extruded, add a singleband pseudocolor ramp as the color on top, and be able to ...
Jon Altschuld's user avatar
0 votes
1 answer
12 views

Visualization of path-oriented images

I have path-oriented satellite images, the georeferenced points are written to a header (geotif). When I open them in QGIS each pixel is rotated to the top (North), they are not path-oriented anymore, ...
Irin Bush's user avatar
0 votes
0 answers
33 views

QGIS view point data

In kepler.gl I can hover over a point and get the corresponding data from the CSV file it was loaded from. Like this. Is something like this possible in QGIS?
gjin's user avatar
  • 101
-2 votes
1 answer
50 views

Google Earth Engine [closed]

I tried to visualize the imagery but it told me there were no bands to visualize, what might be the problem?
Levice's user avatar
  • 1
1 vote
2 answers
526 views

Elongation problem with Seaborn's Kdeplot

I am currently working on creating a Kernel density estimation (Seaborn's Kdeplot) visualization of point cloud data between two countries. However, I have encountered a problem for which I need some ...
Micki's user avatar
  • 11
1 vote
1 answer
190 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
0 votes
0 answers
112 views

earthengine: correct max value to plot RGB of Sentinell 2?

I would like to display the RGB true colors of a Sentinel Image in Earth Engine. I understand that I should adjust the parameter max in Map.addLayer(..., {bands: ['B4', 'B3', 'B2'], max: 7000}); given ...
Matifou's user avatar
  • 2,021
6 votes
3 answers
194 views

Visualizing point attribute (int) with multiple dots / SVGs in QGIS

I am looking for a possibility to visualize an attribute in a point layer in QGIS, by displaying multiple dots or SVG graphics. To be precise, I have a point layer about a disaster incident containing ...
jsp269's user avatar
  • 61
0 votes
2 answers
103 views

Rasterizing point data

I downloaded point-source data of the bumblebee distribution in Europe (Suppl. material 5 from https://doi.org/10.3897/oneeco.3.e28143). I'm only looking at the composite probability and want to ...
kar-g's user avatar
  • 1
3 votes
1 answer
213 views

Marker at the end of arrow line in QGIS 3 with offset

I have a line layer for arrows in QGIS 3, and I'd like to display a marker at the end of each arrow. I tried to add a marker line on top of my arrow with a marker placed only on the last vertex, but ...
Jeremy's user avatar
  • 33
2 votes
1 answer
225 views

QGIS: Combine stripes of different colors on polygons

I want to create a map that shows in which country which companies (offering the same product) are active. The style of the map should be similar to this one (source): So, if company A is red, ...
MariusK's user avatar
  • 21
2 votes
3 answers
2k views

What is the right EPSG CRS code for the United States?

This is my first experience with US cartography. I downloaded the US states from here https://www.census.gov/geographies/mapping-files/time-series/geo/carto-boundary-file.html (the layer is ...
Geo_it's user avatar
  • 523
1 vote
2 answers
169 views

Visualize the number of images per years from an ImageCollection of only Landsat images in GEE

I am trying to create a chart showing the number of images per year from an ImageCollection of Landsat images but I can't seems to find a solution for it (my ImageCollection consists of Landsat images ...
Toboggan's user avatar
-1 votes
1 answer
81 views

Polyline FLAT Buffer: How to create coverage beyond ends of line? (VISUAL REQUEST)

To clarify, if we consider the output of a buffer when choosing FLAT or ROUND. I'm wondering if there is a way to extend the area coverage of the FLAT type beyond the ends of the line with a similar (...
Chris Medyna's user avatar
6 votes
2 answers
243 views

Representing five categories of data in one symbol using QGIS

I have been given the big task of representing a lot of data in one symbol. The plan is to represent 5 categories of data in one symbol. I hope to do this by changing factors such as: Fill colour ...
Murray Horn's user avatar
3 votes
1 answer
188 views

Display points on identical location from multiple layers with an offset

I have several layers containging points holding information. Some of them are at the exact same locationg (as they originated from the same file, describing varous categories at the same location). ...
Vincé's user avatar
  • 1,414
5 votes
1 answer
193 views

Using multiple XY fields for geometry definition in point layer in QGIS

In QGIS 3.26.3 Buenos Ares I have a set of drill hole point data with XY fields for the planned drill hole location and a second set of fields for the surveyed XY location after drilling. I want to ...
MBorgC's user avatar
  • 51
5 votes
3 answers
261 views

Filtering which points to display using expressions in QGIS

I have a load of points loaded in as a CSV file. I want to show only certain points based on their name, e.g. only value1, value4 and value8, the field name is "Drilled ID". I have gone to ...
Antyant's user avatar
  • 269
6 votes
2 answers
449 views

Displaying label if field contains 'X' or 'Y' value in QGIS

Trying to create an expression to display labels from a field called "Drilled ID", but only if the field named "Status" contains 'Week' or 'Active' but to no avail. If the "...
Antyant's user avatar
  • 269
2 votes
1 answer
588 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
8 votes
2 answers
593 views

Rule-based parent child symbol layer view in QGIS

I have QGIS 3.22.15 and I have a point layer with three fields: "FID", "UNIT", "PARENT". Each "UNIT" is associated with the "PARENT" field, thus ...
Rii Pii's user avatar
  • 464
2 votes
0 answers
221 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
  • 2,149
9 votes
1 answer
247 views

Setting constant labels positions in QGIS

I've been trying to figure out how to stop the labels from moving when dragging the map with the cursor. Is it possible to prevent this from happening? I am new to QGIS and don't really know what to ...
Maria's user avatar
  • 93
6 votes
1 answer
237 views

Performing basic labelling with PyQGIS

I'm trying to display labels using PyQGIS. In this case, I create the layers manually, so I guess you need to add a "Label" attribute to the feature as well. Therefore, I've written a little ...
Christian Land's user avatar
2 votes
1 answer
100 views

How can I create a 3-dimensional cube legend (R)?

Has anyone ever plotted a 3-D (cube) legend as shown below? Essentially trivariate mapping. I would like to recreate the below using the same variables of population, built (% area that is built up) ...
Beth C's user avatar
  • 23
1 vote
0 answers
376 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
163 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
  • 57
2 votes
1 answer
379 views

How to add circle around points?

For a point, how do you create circles that shows a certain distance from a point. For instance, I have the following point: What I want to have is this: For instance, while the black circle ...
madetolast's user avatar
4 votes
2 answers
140 views

Visualizations disappear when reopenning

Data is reloaded when I reopen the QGIS, however all of the visualizations disappear when I reopen the QGIS. I add the dataset as follows: Visualization looks as follows: When I reopen the QGIS, it ...
madetolast's user avatar
1 vote
0 answers
344 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
1 answer
444 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)...
luidwig's user avatar
  • 61
2 votes
1 answer
193 views

Showing full list of names of features within polygon when hovering over it in QGIS

In QGIS I've successfully joined three tables of data: 'Addresses', 'Persons', and 'Polygons'. The polygons represent the address on the map, and each address "contains" the names of all ...
Raspen's user avatar
  • 29
0 votes
0 answers
84 views

Is a viewshed reversible?

I want to understand what is visible by a human observer standing in a particular location. Therefore, I have conducted a visibility analysis in ArcGIS with a DEM, using an observer offset of 1.75m to ...
Neil's user avatar
  • 19
1 vote
2 answers
1k views

How to show points on LineString in QGIS?

I created a shape file with the following schema in python: schema = { "geometry": "LineString", "properties": {"id": "int"}, }...
jlcv's user avatar
  • 345

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