Questions tagged [visualisation]
The representation of data in a viewable medium or format
451 questions
4
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1
answer
78
views
Showing lines as stacked bars side-by-side in QGIS
In QGIS 3.38 I am working on a project for a nonprofit, and I'm visualizing value data joined to a line feature by segment. There are three lines across the route, with left ditch, road, and right ...
- 41
0
votes
0
answers
15
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Connecting QGIS to Google Cloud DB Project (MobilityDB)
I would like to visualize data from MobilityDB queries which are being performed with GCP, but do not know how to connect the database to QGIS in this case. I tried passing the External IP of a VM ...
1
vote
0
answers
47
views
Blender DEM Visualisation
I am experimenting with new GIS tools, and one of them is Blender. I am trying to visualize a DEM, and everything works fine, except for the strange contour-like stripes appearing in the DEM. I’m not ...
- 11
0
votes
0
answers
22
views
When I modify the layout of a line, in a GDB ArcMap, the modification is not displayed. How can I solve this problem?
I am updating the route layout (lines) of a cartography that is in an ArcMap GDB; I have found that being in the same Feature Class, updating your layout and stopping editing, your new layout is not ...
1
vote
2
answers
69
views
Displaying two elements in the same coordinate in QGIS [duplicate]
In QGIS I have two elements in the same coordinate and I believe the software is recognizing them as only one point. Is there a way for me to visually display in the map the presence of more than one ...
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5
votes
1
answer
181
views
Rendering polygon by two variables in QGIS
I have a set of polygons with two variables "variable 1" which can take values A, B, C, D, and E and "variable 2" which can take values V, W, X, Y and Z.
I would want to render the ...
- 231
1
vote
0
answers
56
views
Fully filling vector layer with polygons without dissolving the current polygons in QGIS [closed]
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 ...
- 25
0
votes
2
answers
86
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 ...
1
vote
0
answers
45
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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 ...
- 390
0
votes
0
answers
34
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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 ...
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1
vote
1
answer
274
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/...
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3
votes
1
answer
95
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 ...
- 645
8
votes
1
answer
328
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 ...
- 1,313
0
votes
0
answers
36
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 ...
- 147
0
votes
1
answer
31
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 ...
- 11
3
votes
1
answer
953
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 ...
- 138
0
votes
0
answers
82
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 ...
1
vote
1
answer
112
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 ...
- 746
2
votes
1
answer
56
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?
- 31
0
votes
1
answer
936
views
Opening raster using rasterio gives RasterioIOError [closed]
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, ...
3
votes
2
answers
546
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 ...
0
votes
1
answer
22
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, ...
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0
votes
0
answers
34
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?
- 101
-2
votes
1
answer
60
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?
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1
vote
2
answers
781
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 ...
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1
vote
1
answer
270
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 (...
- 11
0
votes
0
answers
166
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 ...
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6
votes
3
answers
213
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 ...
- 61
0
votes
2
answers
166
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 ...
- 1
3
votes
1
answer
331
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 ...
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2
votes
1
answer
338
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, ...
- 21
3
votes
3
answers
4k
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 ...
- 533
1
vote
2
answers
222
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 ...
- 55
-1
votes
1
answer
103
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 (...
- 317
6
votes
2
answers
273
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
...
- 63
3
votes
1
answer
284
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).
...
- 1,432
5
votes
1
answer
215
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 ...
- 51
5
votes
3
answers
286
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 ...
- 269
6
votes
2
answers
580
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 "...
- 269
3
votes
1
answer
822
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.
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8
votes
2
answers
670
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 ...
- 486
2
votes
0
answers
282
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(
...
- 2,215
9
votes
1
answer
297
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 ...
- 93
6
votes
1
answer
285
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 ...
2
votes
1
answer
160
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) ...
- 23
1
vote
0
answers
456
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 ...
- 319
1
vote
1
answer
208
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(...
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2
votes
1
answer
528
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 ...
- 161
4
votes
2
answers
158
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 ...
- 161
1
vote
0
answers
423
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 ...
- 167