Questions tagged [mapping]
The act or process of making a map.
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How to make a heatmap to show the distribution of attribute values more accurately?
I want to be able to create a heatmap that shows the distribution of the attributed "carbon" value within a merged layer.
I have a merged vector point layer that represents the combination ...
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Georeferencing HiRISE images (Martian North) in QGIS 3.36 for geometric calculations
I want to run various geometric measurements on Martian structures in QGIS. Therefore I downloaded a JP2 Black and white map-projected HiRISE image (https://www.uahirise.org/PSP_007372_2475). As I am ...
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Making population density map in QGIS
I have a CSV file of Red Squirrel trail cam sightings. The file has multiple sightings for each trail cam location and includes date, time and location.
Using the Heatmap symbology gives me a good ...
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How to generate values and create a heatmap from 3 different point vector layers in QGIS
I am new to QGIS and would like to turn what I have into a heatmap.
I have 3 different sets of points that go across the map of a UK (see the image attached) that represent coastal marine habitats. ...
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Bad map display in QGIS
I created a custom projection in QGIS, but there is a problem with its display, especially at the poles of the planet (photos in the link), from what I noticed it is only a visual problem (video in ...
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Can I set QGIS to summarize icons above a certain scale and display only the number of icons in an area?
I would like to know if it is possible to set up a function in QGIS to automatically summarize icons on the map above a certain scale so that only one icon is displayed, representing the number of ...
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API for determining distance to closest sea/ocean for a given (lat, long)
Essentially I want know for a given (lat, long), what is the distance to the closest sea / ocean. Is there any open / paid API for that? Bonus if there is an API / library in python.
I've heard that ...
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Using GeoJSON timestamped Folium plugin for data in milliseconds
I have data from different points that a car pass by, and a need to put them in a map, but one by one using their UTC time. The data goes from one millisecond to another, and I need to reflect that.
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Error when using tmap: Error in if (hover != "" && !hover %in% smeta$vars) rlang::arg_match0(hover, : missing value where TRUE/FALSE needed
I am trying to make a map using the tmap package in R, because I have a continous raster for which I think using Jenks Nature Breaks would be usful for visualisation. Thus far this is what I have:
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Coloring a QGIS Map with an RGB Column, and Creating a Legend that follows the same color
I'm working on a project in QGIS where I need to color a map using RGB values from a specific column in my dataset (RGB). However, I also need to create a legend that shows the units with their actual ...
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How to merge OSM and Microsoft/Google building footprint data
How can I successfully combine Open Street Map vector data with the latest building footprint data from Google/Microsoft or Overture Maps, and convert the result to a PMTiles file successfully?
The ...
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Obtaining list of all EPSG code for a single location on map
There are APIs like https://epsg.org/info-api.html, maptiler which takes text input like "San francisco" and returns EPSG codes, but the problem, is I am not able to find a library or a tool ...
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How to stitch screenshots of maps together to make one big map
I want to have an interactive city map, where I can scroll around, can make notes on and can zoom in such that I can see individual houses (think of a Thomas Guide).
What I've tried
My idea was to ...
Cguys
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Symbology style from SIGEOM database to QGIS with correct legend
I am having an issue with having the correct colors for my map and these colors being in accordance with my legend.
I imported a shp from SIGEOM database in QGIS. When I click on categorized in the ...
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Matching satellite, DEM and OSM images
I have a set of satellite GeoTIFF images (from https://xview2.org/) that I want to pair with DEM images from OpenTopography (https://portal.opentopography.org/raster?opentopoID=OTNED.012021.4269.3) ...
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