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Questions tagged [mapping]

The act or process of making a map.

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10 views

Exporting data to map? [on hold]

I have converted my data into CSV and tried following instructions on how to translate that onto a map but my points/data wont load. Does anyone have a solution to what could be wrong?
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0answers
29 views

How to connect multiple cities on a static map by using MapQuest route /static API

I am working on any optimal vehicle routing problem. I want to start map routing on the road starting from one city A to city B to City c to city D back to city A Based on lat/lng of these cities ...
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1answer
31 views

OpenLayers, problem with WFS service and “outputFormat”

I have a service and I tried to paint his layer on my map: http://www.ign.es/wfs-inspire/unidades-administrativas?REQUEST=GetFeature&SERVICE=WFS&VERSION=2.0.0&COUNT=1&srsName=EPSG:...
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2answers
48 views

Sorting MXDs with specific attributes and exporting to specific directory?

I'm working on creating a GP tool that simply exports all MXDs in an input folder into an output folder as PDFs. This actually works, but I messed something up with output directories. I coded ...
1
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1answer
22 views

Changing map symbology with arcpy?

I've written a program that maps out a specific point file of interest. The program produces a map (clipped map attached below) but I can't figure out how to change the symbology to different colors. ...
2
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0answers
13 views

Encode MapServer tile pixels with data values

Is it possible to encode values from raster bands into pixel output using a MapServer .map file? More and more I'm finding that a commonly adopted method for moving geographical data for rendering ...
2
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0answers
26 views

Searching styles for indoor maps

I have data that represents Airport floor plans stored in GeoJSON format. Are there any standards, guidance, or good practices for Indoor Maps Styling? Any references or resources would be useful.
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1answer
21 views

Attach the bar's bottom to a location in 3D Cesium

I have the code below on web site cesiumjs. Is there any way that I can fix the bar's bottom at the location (37.786805,-122.45475) on the Earth's surface? The bar here looks like its bottom moves ...
2
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1answer
59 views

Any Open Source Web Mapping App importing ASCII grid?

I'm using QGIS were its easy to import my noise mapping data through a raster layer file in ESRI ASCII (ASCII grid) format. I want to do the same online, without exporting from QGIS, because I want ...
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0answers
27 views

Creating a Predominance Visualization in QGIS

This is what I'd like to replicate. I'd like to show the dominant category for each region. Like the author, I also have 6 categories to show (languages). Here is the article that is explaining his ...
1
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1answer
43 views

QGIS - exporting shapefile to convert to .JSON for use in PowerBI

I'm trying to export a shapefile I've been using in QGIS for use in PowerBI because PowerBI only supports .JSON extensions. So I've been converting them with mapshaper.org. This is my shapefile result ...
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3answers
103 views

QGIS 3.0 - Creating a dot map with multiple categories

I'd like to create something almost identical to this: I'd like to display what languages are most spoken within each neightbourhood. My data has 6 languages. Is this possible for a novice like ...
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0answers
42 views

Visualizing values on map in QGIS [closed]

I have a world map shapefile with the country boundary. I want to represent my data associated with specific countries. The values are to be represented in a colour graded manner along with ...
2
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3answers
528 views

OpenLayers plugin in QGIS 3.6

I can't find OpenLayers Plugin to install in QGIS 3.6. I want to open Google Earth in order to add coordinates and open satellite image to start mapping.
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1answer
38 views

Is it possible to see the selected geometry in the map composer? And change the appearance of them?

I have QGIS 3.4.4 Madeira. I would like the selected geometry to be seen in the map composer, but I can't find the way to do it. Also, I would like to change the appearance of the selected geometry, ...
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1answer
54 views

QGIS color map format

What is the correct color map format (.txt) for a color map I want to load in the Raster Layer Properties/Symbology menu of QGIS (v. 3.6.0)
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0answers
41 views

Whats your favorite map projection for [closed]

What is your a nice projection for the southern Atlantic? S.America & W. Africa? I'm looking to produce nice maps with little distortion on shapes. Leaning toward Lambert.
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1answer
52 views

Creating coordinate points based on polygon

I am trying to create coordinate points based on a polygon that I've created in Google Maps and imported into R as an sf object. Specifically I have sample points of physical samples I've taken, but ...
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0answers
21 views

Carto Maps: Display different points/objects at the same location

I know this question has been asked before, but I could not succeed with the help of the answers that are already out there. Can someone provide me with a detailed description (for dummies that cannot ...
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1answer
39 views

Update info on a div when map on touchend

I want to update a div with information when I touchend the map on my iPad or iPhone. The information div run correctly with a click version but for a touchend I had to use map.on map.on('touchend', ...
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1answer
23 views

Plotting Geographical Grid from Long/Lat Coordinates in R

I have a file of coordinates (Long/Lat) that should enable me to plot a series of 10km grid squares covering the UK. However, for each grid square I have five sets of coordinates by way of plotting ...
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0answers
45 views

Use openrailwaymap offline

I have a one question: it's possibile to create an offline map of openrailwaymap? I would create an offline map using openstreetmap and after add the openrailwaymap layer...
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1answer
25 views

Not found the code for a map R animation

I tried to make an animated map in R with tmap package, like here https://geocompr.robinlovelace.net/adv-map.html#animated-maps I tried to find the code for the animated map presented in section [8.3 ...
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1answer
27 views

Confusion regarding topojson Polygon coordinates

I have a topojson file which represents a hexagon. A hexagon has 6 vertices, so I was expecting the arcs attribute of topojson file would contain 6 points, but it contains 7. I wanted to know why ...
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1answer
52 views

Multiple attribute maps in R?

In pursuit of replicability (as well as requirements of funding agency), I am trying to produce all of the maps for a current project in R. For single attribute maps, so far so good! I am using ...
1
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1answer
95 views

Creating Bivariate choropleth map a.k.a. Relationship map in QGIS [duplicate]

There is one polygon layer with the number of "immigrants" and "emigrants" respectively. I want to visualize those two values together. Diagram with both normalized values is not an option because the ...
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0answers
30 views

Algorithm to optimally split a map comprising many separate areas into panels for printing

I have a map of set of land parcels (polygons) that need to inserted into a document. Some of these polygons are contiguous, but some can be scattered randomly. The area is typically too large for a ...
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0answers
24 views

Bar Chart Legend

I am trying to add legend to a map with bar charts which would be meaningful. The default legend doesn't explain the size of bars on the map. I have tried this one: https://www.esri.com/arcgis-blog/...
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0answers
254 views

How to enable jupyter nbextension for ipyleaflet

I was trying to test out this script https://github.com/tylere/PyDataNYC2017/blob/master/ipynb/satellite_analysis.ipynb but got stuck at the iteractive mapping part. import ipyleaflet map1 = ...
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3answers
553 views

Filtering interactive leaflet-map with dropdown-menu?

I try to set up a filterable "shot chart" like http://graphics.latimes.com/kobe-every-shot-ever/ with leaflet. I've a geojson file thats stores all the shots data, I've them showing up in a layer. ...
1
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0answers
26 views

QGIS Atlas Feature for multiple polygons with same attribute [duplicate]

I have a shapefile of city blocks in a given city. Each polygon represents an individual lot, but the attribute table includes a column called "sector", that denotes the zone of the city that the lots ...
0
votes
1answer
46 views

R and Mapview: How can I chose different colors for different layers?

Here is an example: library(sp) library(mapview) data(meuse) d<-st_as_sf(meuse,coords = c("x","y")) d1<-d[sample(nrow(d),20),] d2<-d[sample(nrow(d),20),] mapview(list(d1,d2)) Both layers,...
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1answer
61 views

QGIS- how to prevent layers from appearing in legend on composer

My laptop (Lenovo x1) usually crashes When I add legend to a map composer in QGIS (QGIS 3.2 BONN). Problem is that all layers in the project will be "auto-updated" to the legend and this will get my ...
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0answers
104 views

How can I generate a series of maps from time series data in QGIS3?

I've got a polygon layer containing some time series data in cells and I'm trying to create a series of maps from it. Data structure: every polygon has a timestamp and a value that I'm displaying on ...
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2answers
436 views

How are satellite images mapped to terrain coordinates so precisely?

Many geoinformation systems have both satellite images and terrain features (houses, roads, etc) with coordinates. So they can show terrain features drawn over the satellite image or they can display ...
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0answers
45 views

Digital Soil Map of the World [duplicate]

I have downloaded a digital soil map of the world from: https://worldmap.harvard.edu/data/geonode:DSMW_RdY It has lots of files in it with different endings (shp, sbx, xls etc.). I am using QGIS 3.4. ...
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1answer
178 views

Downloading map tiles/image from website

There are two Norwegian websites that have satellite imagery I need, https://kart.finn.no/ or https://www.norgeskart.no . Is it possible to save a certain area when zoomed out so the scale is 200m, ...
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1answer
74 views

Has online map-based software for survey been developed? [duplicate]

For my research, I need to ask respondents to indicate on a map where they think crime happens. I think of this as a digital solution to physically dropping pins on a map. Is there an online software ...
1
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1answer
32 views

How to add multiple layers to SAGA map view at the same time?

I need to visually interpret more than 50 grids, so I want to add them all to a SAGA map at the same time. If I right-click on a single layer, I can "Add to Map", but with multiple, this option is not ...
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votes
1answer
124 views

Map Coordinates have negative values

I have created a map in QGIS with 4 vector layers with the CRS of (EPSG:28356, GDA94 / MGA zone 56) The map is of the Robina area on the gold coast Australia. I have added map coordinates and the ...
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0answers
47 views

Animation of Faceting maps with tm_facets

I am unable to get the facets for 3 years of provincial GDP of provinces of China. My data is as follows. structure(list(Pr_mlnyn = structure(c(2L, 27L, 10L, 25L, 19L, 18L, 17L, 11L, 24L, 15L, 31L, ...
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1answer
120 views

Remove rectangles from Leaflet map

I am drawing a Leaflet map. I also want the ability to add the coordinates via a form. How is that done? leaflet map
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1answer
351 views

Extract coordinate data from KML path

I have a route defined by a series of waypoints - how can i extract as many coordinates as possible from that route as possible? I need to extract about 100-150 coordinates that lie along a route ...
2
votes
1answer
57 views

How do you turn coordinates vertical in Map composer?

When using map composer in QGIS, there is the option to `Draw coordinates'. once selected, the coordinates are situated in the horizontal position (as seen below). Does anyone know how to align the ...
3
votes
1answer
29 views

ArcGIS 10.2.2: How to display attribute values using a representative number of symbols?

I am using ArcGIS 10.2.2 Advanced. I want to produce a map where the value of attributes in each polygon is shown by a representative number of symbols in each polygon. I have used Quantities > Dot ...
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0answers
100 views

Highlighting map areas through map legend using Leaflet?

I would like to highlight different areas on a choropleth map when the mouse over the legend using Leaflet, but my code is not working: <head> <meta charset="UTF-8" /> <meta ...
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votes
1answer
193 views

Making new map using QGIS? [closed]

I'm new using QGIS. I have been searching for information, a manual or a workbook that shows me how to make a map like this. I require the same map but with other division and new data. I have been ...
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0answers
32 views

ECW Exception when exporting a map in QGIS

Since monday Qgis has been unstable, everytime I try to export a map (or worse an atlas) it has crashed. I get the folowwing message : --------------------------- ECW Exception ---------------------...
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votes
1answer
131 views

Simplifying a SpatialPointsDataFrame in ggplot world

I've been working on a map showing lines running across Europe. Each line is coming from a GPX file, parsed in like so: spdf <- readOGR("data/file.gpx", layer = "track_points") Now, if I plot the ...
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0answers
23 views

Unable to view previously published AGOL Map Image Layer

It's been a while since I've worked with AGOl and map image layers. I'm in the process of republishing several Map Image Layers to a new server. The issue I've been having involves not being able to ...