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Questions tagged [maps]

A visual representation of an area-a symbolic depiction highlighting relationships between elements of that space such as objects, regions, and themes

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Water Layer - Lake - QuickOSM - missing

Use : Qgis - newest release OpenStreetMaps QuickOSM - newest release In the past when I was making maps I could find a layer called "(Key) Water" called "(Value) Lake", but I can't ...
stonefox's user avatar
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9 views

Separate legends and colorbars for subplots don't scale properly using the JRC Dataset

I've written some code to create subplots with maps based on the JRC Global Surface Water dataset. My code creates the maps just fine, but when I want to add a legend to explain the colors, they look ...
greasyfries's user avatar
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47 views

Plotting spatial data in Python

I am very new to mapping in Python and I'm trying to plot data through Jupyter Notebook - import pandas as pd import numpy as np import xarray as xr import sys import os import matplotlib.pyplot as ...
proy's user avatar
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51 views

Create a map of different bat locations across two towns using OpenStreetMap [closed]

I'm very early on in the project and haven't used QGIS before. To begin with I want to have my project focus on two towns that I can easily jump between without any lag, I'm just wondering if this is ...
louis roberts's user avatar
0 votes
1 answer
50 views

Polyline from coordinates array in OL v9.2.2

I'm trying to implement something like this example in Angular 17. I can't replicate this part: const polyline = result.routes[0].geometry; const route = new Polyline({ factor: 1e6, }).readGeometry(...
Tatoh's user avatar
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Taking screenshot of area selected on Google Maps and saving it to upload file in Flask [duplicate]

I want to take a screenshot from selected area and save static/uploads folder under the python/flask project using Google Maps APİ. How can I do it? my html code: <!DOCTYPE html> <html lang=&...
Okty Ycl's user avatar
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49 views

Taking screenshot of area selected on Google Maps and saving it to upload file in Flask

I want to take a screenshot from selected area and save static/uploads folder under the python/flask project using Google Maps APİ. How can I do it? my html code: <!DOCTYPE html> <html lang=&...
Okty Ycl's user avatar
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43 views

Adding Map Layers using GGPLOT - Colorizing Adds Errors

I am doing a mapping project, that I thought would be rather simple in R. Using the Freedom House scores for freedom, I created a map that colorized each country by it's freedom score. Seemed simple ...
GatorAdmiral03's user avatar
1 vote
1 answer
72 views

TomTom traffic vector layer integration in ArcGIS SDK JS API

I'm facing issues displaying results from the TomTom API in my ArcGIS JavaScript application. Despite configuring a Vector Tile Layer with TomTom traffic data, the results are not showing up on the ...
ahmed mahfoz's user avatar
1 vote
0 answers
135 views

Legend Spacing in tmap

My problem is that I am using tmap to create cartographic maps, and similar to ggplot I need legend spacing between the legend keys but I can not figure out how to implement the legend spacing in tmap....
user234615's user avatar
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270 views

How to use folium marker on click event to draw other markers on the map

I'm trying to build an app with Python to generate markers when ever I click on an initial marker. I tried using folium but it's not working for me. I tried editing in the generated HTML file but it ...
Abdulrahman Adel's user avatar
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120 views

Plot borders larger than set extent (Terra in R)

I am trying to plot what I think is a very simple map. I have three inputs, map of Canada, map of USA, and a shapefile with rivers. I have set my extent, and when plotting the map I can see a cutoff ...
MHolb's user avatar
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59 views

How to create a map like the attached one?

I have come across some maps (visualizations) similar to the one attached and I would like to learn how to make them. I work with ArcGIS Pro and QGIS extensively, however, I think this is more a ...
user1919's user avatar
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Validating raster soil map through independent point set of soil attributes

If I have a raster map of pH, and a point (vector) dataset of map independent pH measurements, then how can I validate the accuracy of the existing raster with these extra measurements? I don't have ...
Dimitris K's user avatar
1 vote
0 answers
134 views

Save Google image as map with a point location dropped on it using a coordinate

I have saved a Google map image (PNG) using coordinates in Python. Now, I want to mark a location(as a coloured dot) of that coordinate on the map and save the same image. Are there any options ...
qeg's user avatar
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1 answer
1k views

Issue with terra::mask

I try to mask the mapenter image description here in the rectangles with the borders of Switzerland. str(swissmask) S4 class 'SpatVector' [package "terra"] > swissmask class : ...
Beat's user avatar
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75 views

GADM shapefile former countries

I am looking for country shapefiles of former countries (i.e. USSR, Sudan, Yugoslavia, Ethiopia, Czechoslovakia, Netherlands Antilles) - ideally WGS84. Does anyone know if GADM or any other website ...
gcoder's user avatar
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1 vote
0 answers
70 views

How could I replace fixed conditions to get clustering EPS for some calculation?

I use a function of DBSCAN for clustering, that takes the EPS value as a parameter (radius that defines which points will be grouped together). To set the EPS I use the following switch case: let ...
Tchiteu Abloh's user avatar
1 vote
1 answer
103 views

Markers are not showing on min resolution

Working with Openlayer 6, my map is working fine for the 40 layers on initial load. Against search functionality, I am trying to add a new layer on the map using the following code. const ...
Mudassir Afzal's user avatar
2 votes
1 answer
99 views

Internationalizing a map in QGIS

I am working on a map of a city in Cambodia. Unfortunately, the characters and names of nearly all places are all displayed in Khmer, which, despite being able to speak, I am not able to read. I ...
TropicalByron2's user avatar
2 votes
0 answers
1k views

How to remove a marker from a Leaflet map?

I'm currently making a website where I'm using Leaflet 1.7.1 and Nominatim API and VueJS 3 and I'm trying to delete the marker after I search an address. When I search the address the first time ...
Aria AMAN's user avatar
2 votes
1 answer
106 views

Build a project that reports if a point is inside a restricted area

I want to build a project that can accuse if a point is inside a restricted area or not. For this I have to use an map with restricted areas already delimited by layers and the entry point is a ...
Victor Soares's user avatar
1 vote
1 answer
3k views

How to produce a gridded map in R where each grid cell represents the sum of points occurring in the grid?

I want to produce a gridded map where each grid cell represents the sum of points falling within the grid using R. I have seen similar questions for R here, here, and here for Phyton. But could not ...
Jhonny's user avatar
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How do I make a small box similar to the one in the attached picture with a full view of an area?

So I have one area that's been split into 7 layouts, how do I make a similar full layout view as show in the attached picture?
Martynas's user avatar
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241 views

I need a formula to calculate gml:pos to standard GPS coordinates

I downloaded "address points" data from geoportal and the coordinates are not readable for me. <wfs:member> <ms:prg-adresy> <gml:boundedBy> <gml:Envelope ...
Valkyria's user avatar
0 votes
1 answer
41 views

Trouble overlaying plots in R

I've produced a raster using IDW to make predictions across California, and now I'm trying to overlay the raster image with the border/shapefile of California. I've ensured the CRS projections are the ...
Dougie G's user avatar
8 votes
0 answers
1k views

Projection: Mollweide to Equirectangular

I am trying to reproduce in Python a coordinate transformation of a map from Mollweide coordinates (see Figure A) to Equirectangular coordinates (see Figure B) that I saw done in Mathematica in the ...
Loïc Poncin's user avatar
6 votes
1 answer
831 views

Saving a map from a new print layout pane in QGIS

I have created a map with different layers, labels, scale bars, a north arrow, a legend, an overview pane, and other modifications. It took a long time to produce this map within the 'New Print Layout'...
Alice Hobbs's user avatar
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0 answers
31 views

can lat long of a place could have different precision from google maps [duplicate]

When I select for lat long in google maps I could see the precision after decimal places are same for both, for an instance a place could have [12.941963598406998 {15} , 77.60827701942743 {15 ]( both ...
lazarus's user avatar
  • 101
2 votes
0 answers
1k views

Color osmnx map by place (using graph_from_place() method)

Let's say we want to graph the two below villages, which are in the UK. We also want to colour the streets by length. We can do: # Get data import osmnx as ox place = ["Broughton Hackett", &...
johnjohn's user avatar
  • 121
1 vote
1 answer
205 views

Improving resolution of map using QGIS

I am using QGIS. I have a shapefile of Africa. In that shapefile I divide Africa in cells. After, I graduate all the cells according to one variable (see first picture). I would like to see the entire ...
OgeiD's user avatar
  • 618
1 vote
0 answers
292 views

Calculate growing degree days using NetCDF file in R [closed]

I have a NetCDF file containing temperature values over a certain region from 1984 - 1985, with 1-hour intervals, so that means that I have 17544 maps. I need to do two things and I got a bit stuck ...
María's user avatar
  • 11
1 vote
1 answer
2k views

Setting Dark Mode for WMS in QGIS

I want to implement a OSM into QGIS via an WMS service. We see that this is easy, right? I thought so too. In my case I want to implement a night mode map, like you would find in Google Maps when you ...
Hans Swent's user avatar
1 vote
0 answers
951 views

Setting map view with 50 miles of radius of marker with mapbox

I have a mapbox map with a marker and I want to add a radius around it, say 10 miles. Now I can add a circle to the map, even though I do not want to, but I cannot get it to fit the screen. I have ...
JulesUK's user avatar
  • 113
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0 answers
222 views

OS Maps API – WMTS map (EPSG:27700), Point and Route layers fail to draw

Can anyone help a Nube? I'm learning OpenLayers using OS Maps. I am using WMTS(EPSG:27700) projection. The OS map displays, however, point and route layers do not, although I have successfully got ...
Langdale Pikes's user avatar
1 vote
0 answers
283 views

Choosing map projection type for flight plan [closed]

There are two projection of maps that I saw online. UK CAA is a transverse projection map, while ICAO maps are conical. It seems that transverse map is easier for flight planing as straight lines are ...
Meir Tolpin's user avatar
2 votes
0 answers
257 views

Extract shapefile from scanned PDF map using Open Street Map?

I am new to QGIS. I have a scanned PDF document containing maps of the Italian highway network development year by year from the 1920s to the 1990s (i.e. showing the pre-existent network in a given ...
Marco's user avatar
  • 21
0 votes
1 answer
323 views

ArcGIS Pro: where does arcpy reference map order?

Problem: In an ArcGIS Pro 2.8 Notebook, how is python reading the map order? I have to know this because when I use a list the items in that list are based off the order of the maps. When that order ...
Pfalbaum's user avatar
  • 911
0 votes
0 answers
207 views

Matching polygons with many points using QGIS

I'm building distribution maps for several species in QGIS but I've been struggling to match the country borders with the lines of the distribution maps. As you can see in the next picture, both ...
Daniel Santos's user avatar
1 vote
1 answer
332 views

How in QGIS to place the signature of the latitude and longitude of the map corner in the layout?

It must be done as in the example.
GisMan91's user avatar
1 vote
1 answer
423 views

Standard deviation map shows pixels as null in GEE

I need some help in understanding image reducing with kernels. I have a code that generates a band of NDVI stdDev 3X3 kernel. When I map the layer the outcome is an image with empty pixels with a ...
user166621's user avatar
1 vote
2 answers
82 views

Digitizing photographs of a map

Is it possible to digitize the photographs of very old maps, having no co-ordinates. The photographs are exactly like this. If possible, could somebody tell me how to proceed? I have access to ArcGIS ...
Scholar7's user avatar
0 votes
0 answers
397 views

Customizing Layer Display in Map based on Nested Criteria selection with dropdown field outside the Map

I have about 5 different polygon map layers on a map. Each map layer data is stored as separate JSON file (Eg: continent1.json, continent2.json, ...... continent5.json). Every layer have its own ...
Mahesh A R's user avatar
2 votes
1 answer
176 views

How do I find the geographic mean of a multipoint feature in QGIS?

I'm trying to find the geographic mean of the multipoint feature in the above image. It seems like a really simple command, but I cannot find any way to do it.
Ismail's user avatar
  • 139
2 votes
0 answers
111 views

Can I add 3d models on maps in QGIS?

I need to overlay 3D models of buildings I have designed in a separate CAD software. I want to add .stl or .obj files with proper scaling on the 2D map on qgis so that I can make a 3D map with 2D base ...
pulkit's user avatar
  • 29
1 vote
1 answer
987 views

What is the way to calculate center possitions from WKT format POLYGON?

I have a polygon, for exapmle `POLYGON(( 4977994.67879995 5126870.48124117, 4977998.08163505 5126894.51511692, 4978000.17683601 5126902.67634682, 4978001.98260158 5126910.54986973, ...
Alexander Gharibashvili's user avatar
5 votes
0 answers
188 views

Earth Engine coordinates in a map

I am beginner and I'm having troubles to do what I want in Earth Engine. I want to put the coordinates under the map, like this: I already made the layer, but I don't know how to put the coordinates ...
Mailon Figueiredo's user avatar
4 votes
2 answers
2k views

How to know if a point is on linestring or near one (<0.01units) using GeoPandas

I want to know if a point intersects/touches/on the line/linestring or if the point is less than 0.01 mts (units) from linestring. import geopandas as gpd import matplotlib.pyplot as plt lines_gdf = ...
user181176's user avatar
1 vote
0 answers
984 views

Select area in Maps and get List of all Addresses

I am looking for a way to select a residential subdivision online maps and get a list of all addresses in that selection. What do you think? I think this thread might lead in the direction of what I ...
Jay84's user avatar
  • 11
0 votes
0 answers
26 views

Place marker on map - GeoTools 25-SNAPSHOT - Java 11 [duplicate]

I am using GeoTools 25-SNAPSHOT in my application. I have displayed a map in my application (raster). Now I want to place a marker (image or simple colored dot) on a map at a specific latitude, ...
code_poetry's user avatar

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