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

Filter by
Sorted by
Tagged with
1
vote
0answers
25 views

How to get my store locations which are withing 30 min drive distance using google map

I have the list of stores in my database. I want to show only those stores to a customer who can reach that store within 30 minutes (configurable) of drive. using google api
3
votes
2answers
543 views

Automating creation of multiple maps with different layers on same location in QGIS?

I was wondering if it is possible in QGIS 3.2 to cycle through different layers. For example, I have a workspace open with 3 raster layers (A, B and C). I would like to create 3 maps: Map A with ...
0
votes
1answer
2k views

Get Polygon boundaries of all cities or municipalities from whole country in GeoJSON

Is there a way to get geojson boudaries of all cities in a country ? The only thing I found is to find the geojson of only one city using this: https://nominatim.openstreetmap.org/search.php?q=Czech+...
2
votes
2answers
69 views

Cataloging small hardcopy map collections

We have a small collection of hardcopy maps, in the low hundreds, to catalogue and file into long term storage and are looking for lightweight guidelines and tools to do this in a way that will ...
0
votes
1answer
46 views

Possible/Feasible to download parcel map and add up to 20 layers

Novice who just downloaded and installed QGIS a few minutes ago. Currently reading about the functionality of QGIS but thought that I may be able to obtain immediate insight in reference to my ...
1
vote
1answer
67 views

Shapefile licence agreement when publishing map made with R's maps package

I am submitting an article that has a map I made using R's data from R's maps package. I know that most shapefiles come with a license user-agreement or copyright information that accompanies the map ...
3
votes
1answer
68 views

Offsetting Atlas Generated Maps

My aim is to generate maps of polling stations to helps electors find their local polling stations for elections in 2019 and onwards. I've plotted and labelled 80 polling stations on a 'Polling ...
0
votes
1answer
260 views

change ggmap to sp.: Create circle where radius represents distance (km)

I am trying to made multiple concentric circles of multiple radii in kms scaled to a map, similar this post was using the post here (ggmap: create circles). map.sp<-readShapeSpatial("C:file.shp") ...
2
votes
0answers
293 views

Weird lines on google maps [closed]

While I was travelling with my GPS "ON" and tracking my route I found this strange lines in pink and green dotted lines when I zoomed out the map I found that the lines where coinciding with the ...
1
vote
1answer
287 views

Printing multiple maps in the same pdf

Im using leaflet, Is there a plugin that allows it to print more than one map in the same pdf like this example .
1
vote
1answer
499 views

Problem deleting elements in map composer

I would like to make a query about the use of the map composer. Sometimes, when I add elements to the map, for example the scale bar, I have realized that I can delete it by pressing only the Delete ...
0
votes
1answer
103 views

Making a map with 8 different rasters of the same place but with only one legend in QGIS [closed]

I have 8 raster images of a farm that are changing with respect to time. I want to create one map as shown in the attached image which will show the 8 raster images with only one legend to represent ...
2
votes
0answers
589 views

Clustering of polygons on map using Leaflet? [closed]

There is a plugin for Leaflet to cluster the markers.The result looks like so. Result: If I like something to do to show clusters of circles and polygons? For example, when you hover over a cluster ...
0
votes
1answer
97 views

QGIS printing acting REALLY strange

I'm printing a 11 x 17 map but the QGIS print properties are acting weird. For instance , i set my composition presets to ANSI B (11x 17 in.) and the page setup to 11 x 17 but it prints off a 11 x 17 ...
1
vote
1answer
336 views

Difficulty drawing map lines across the international date line; Connection Map Visualization in R

I'm creating a visualization from country centroids to a few thousand coordinate pairs, and I'd like them to all be displayed unbroken and smooth on the same map, but I get these horizontal lines when ...
2
votes
0answers
159 views

Serving map files with Nginx

Currently i am serving map tiles with gunicorn and tilestache with nginx reverse proxying gunicorn. This works, although for some reason i am unable to do anything with the appearance of the map as it ...
2
votes
1answer
199 views

QGIS - How do you keep a map fixed to a template?

I am creating templates within print composer for people within my company to use. I would like them to include a map of the county in the top left corner that can then be used as an overview for ...
0
votes
1answer
108 views

No maps visible when downloading something with CartoPackageManager

I am facing such problem: while some package is downloading with Carto PackageManager, I can’t see neither other downloaded offline maps nor online maps of any other place. In other words, if there ...
2
votes
1answer
1k views

How to decide geohash length based on zoom level?

I want to decide geohash length based on zoom level, how can I do that because so far I am unable to find any standard way to do so? For example, current zoom level is 10 and geohash is "...
1
vote
0answers
69 views

My address is not shown in the maps how to update the maps with my new address [closed]

I have moved to my new house and not able to find it on Google maps, how to add my address to the maps.
1
vote
1answer
6k views

How I do rotate a map using Leaflet?

How rotate map using the leaflet? I was trying here, but nothing worked. I followed this tutorial, even though it was from the mapbox, I assumed it was useful: https://www.mapbox.com/mapbox-gl-js/...
1
vote
1answer
1k views

Multiple markers with specific infowindow content

When I'm looping through a list of addresses, I'm able to plot the markers for all the addresses fine. But when I click on any marker, the infowindow content shows data of only the last marker. How do ...
5
votes
1answer
2k views

Displaying polygons with colour gradients that changes at value 0 using QGIS?

I am plotting some model outputs in QGIS and let's say I have got a given number of polygons and for each one a value which can be negative OR positive. I need to assign to each polygon's value a ...
2
votes
1answer
3k views

How accurate is Google Maps when entering lat and long from a survey drawing

How accurate is inputting the latitude and longitude from a survey pin into google maps to look at the site location? The problem I am trying to understand is I am about to purchase a property in ...
2
votes
2answers
616 views

Finding Statistical Area (SA) in which address (Lat\Long) lies via R Point in Polygon?

Australian Bureau of Statistics (ABS) provide census information for all Australia. However, ABS has its own division of a state/suburb/town called Statistical Areas Level 1-4 (SA), which is different ...
1
vote
0answers
139 views

How to calculate if a turn is required from a set of coordinates?

I have some polyline data that represents a navigation route generated using Dijkstra's algorithm. Along this route I would like to calculate anytime a turn is required. Ideally, this would be some ...
1
vote
3answers
3k views

Approximate distance between two points (longitude / latitude) without Haversine

How can I judge from the long/lat coordinates of a point A alone whether it is possibly/certainly not within a short distance of x meters from another coordinate B, using R (without applying geosphere:...
0
votes
1answer
63 views

Visualizing lat/lon pairs on a map, locally

I have a sensitive list of coordinates that I've already managed to geocode locally and now need to visualize on an interactive map. They're all contained within a particular neighborhood of the same ...
2
votes
0answers
253 views

Shapes don't match google maps QGIS 2.18.7

I have some shapes (in EPSG:4326 wgs 84) that match with Openlayers ->google street maps only when I do enough zoom-in. But When I zoom-out seems that my shapes move to the east. What could be ...
1
vote
0answers
55 views

Change the content of Countries.txt

I'm following the steps on this page: "https://github.com/mapsme/omim/blob/master/docs/MAPS.md", "https://github.com/mapsme/omim/blob/master/docs/INSTALL.md" When I run this line "omim / tools / ...
1
vote
0answers
214 views

Routing of OpenStreetMap with Qt and maps.me?

I'm following the steps on this page: "https://github.com/mapsme/omim/blob/master/docs/MAPS.md" and: "https://github.com/mapsme/omim/blob/master/docs/CONTRIBUTING.md" When I run this line "omim/...
1
vote
0answers
46 views

Some labels not being generated on map contours

I'm trying to produce a map using the latest QGIS incarnation: 2.18.11 After importing the UK OS contour data for one 100km grid square, I crop it using two contiguous polygons (1km squares). Two of ...
3
votes
0answers
90 views

Allow user to pan after once 'box' is draw in Openlayer2

I am using this example http://dev.openlayers.org/examples/draw-feature.html to draw a box on a map using 'draw box' checkbox option. Now I want , After drawing box I can be able to pan on map ...
1
vote
0answers
118 views

Unable to pan on map on a specific zoom level . Openlayers2 [closed]

I am fixing bug of a big application, In which after I cant pan over map but after zoom in I can pan. after again zoom out Its impossible. As I mentioned its big application so I cant post all code ...
1
vote
1answer
870 views

Updating OpenStreetMap maps database of own tile server?

I am working with a osm2pgsql database, and I do not know wheter I can use Osmupdate or not because in the StreetMapWiki it says furry-sansa should be used for osm2pgsql databases. The problem is ...
1
vote
1answer
980 views

Check if a Polygon Feature is completely enclosed by another GeoJSON features in OpenLayers 4

I have a map which is implemented using Openlayers 4. It loads a GeoJSON vector which defines the boundaries of a particular country. The user is allowed to draw and edit polygons to define subregions ...
14
votes
1answer
315 views

What is the meaning of this linear scale of angles on this 1951 map of Iceland from the U. S. Army Map Service (AMS C762)?

On the U.S. Army Map Service (AMS C762) 1:50,000 maps made of Iceland 1948–1951, there is a scale marking at the top which shows degrees, I suspect angles. In the image below it shows 25°–29°. It ...
-1
votes
2answers
416 views

Where to download high resolution maps or layers for Greece?

I am trying to create management zones on selected fields in Greece, so I am looking for high-resolution layers (maps) to use as a base (preferably satellite imagery). Could you suggest me the best ...
1
vote
2answers
15k views

Seeking offline map API like Google Maps for web? [closed]

I'm looking for an offline map API for web like Google maps (because I know I can't use this offline). I currently have a program (using js and node.js) that uses the google maps api and google roads ...
1
vote
0answers
249 views

Obtain elevation from a request lat,long with a map .tif

I am trying to get the elevation between two points in a route of Spain using APIs with HTTP request. I am using OpenStreetMap to get the routes, but I don't know how extract elevation with other tool....
1
vote
1answer
129 views

Does cropping and adding an alpha layer to a raster map yield better georeference results?

I have a collection of nine high-resolution map scans illustrating former borders between two nations. The scale is about 1:13,265 for each of the nine images. I want to georeference these maps using ...
2
votes
1answer
476 views

Align Raster with boundary shapefile: selecting right proj4 R

library(maps) library(mapproj) library(mapdata) library(rgeos) library(maptools) library(sp) library(raster) library(rgdal) Drawing inspiration from here https://stackoverflow.com/questions/10763421/...
2
votes
2answers
8k views

Keep customized colors with geom_polygon()

I have plotted a map of France with customized colors with map(): map(database="france", fill=TRUE, col=color) Results: (don't mind the two errors) and then I want to put this map with a ...
3
votes
1answer
507 views

How to make proportional signs on QGIS?

I usually use the proportional circles extension of QGIS but I need to have proportional pork or pigs according to the number of pigs per exploitations (it's a map about agriculture). How do I do ...
1
vote
1answer
226 views

Topographicmap.jpg convert to GPS readable [closed]

I have topographic map 1:25000 and I want that map to be GPS readable. So, is there any program for maps that can import this .jpg extension and to track my position in platform of this my topo map ? ...
4
votes
1answer
4k views

Using one map, multiple layouts, each with different layers in ArcGIS Pro?

I was wondering whether it's possible in ArcGIS Pro to create multiple layouts for one map, which contains different layers (e.g. aerial photo, buildings and soiltype). After prepping the map in 'map ...
1
vote
1answer
822 views

Map all time steps of a NetCDF file in R using a loop

I have a NetCDF containing temperature values over a certain region for 2011, with 1-hour intervals, so that means that I have 8760 maps. What I want to do, is plot all 8760 maps using one color ...
8
votes
4answers
6k views

Create an inset map in R

I need to create a map of my sampling site, and the journal requested to make an inset map showing where in the world this map is, this is my map code. library(maps) library(GISTools) map('state', ...
0
votes
1answer
173 views

LonLat values returning from Openlayers 2

I have developed an app using Openlayers 2 to retrieve the latitude and longitude values based on the clicked position. The map display the area of Great Britain and Northern Ireland. Below the ...
1
vote
1answer
44 views

Forming and Creating Town maps for Public Use [closed]

I have a keen interest in Graphics Design and have always wondered how town maps are created I assume it's a mixture of GIS and Photoshop/Illustrator. Anyone here of any experience producing these ...

1 2 3 4 5 7