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Questions tagged [cartography]

Using artistic and scientific principles for creating maps and graphically representing geographic areas

2
votes
1answer
36 views

Tips for mapping coastline geometry with SRTM raster

Working on a map that includes a bathymetry layer, SRTM data for hillshade, and an accurate coastline boundary edge. I noticed though that the pixel resolution of SRTM 90m resolution creates visible ...
2
votes
1answer
45 views

Is it poor form to rotate Albers US state projections if you're only viewing a single state?

We are using the Albers US map in a project with Alaska and Hawaii shown as well. The project allows users to zoom into a state and only see that state for more detail related to the data we have. ...
-1
votes
0answers
22 views

How to show labels only at the straighter parts of a line while using x-followLine option in the style in GeoServer

We are running GeoServer 2.12.1. I am trying to label trails in GeoServer and one of the issues I have is that when I try to align the labels along the trail line, the labels look skewed at the ...
1
vote
2answers
31 views

Name multiple authors on a map

Is it: Authors: John Doe, Jane Doe or Author: John Doe, Jane Doe. It is a small difference, but I wondered how to do it correctly.
3
votes
2answers
101 views

Italic fonts in QGIS 3.4

How can I apply italic fonts for labels and print composer in QGIS 3.4? The option seems to be disabled.
2
votes
2answers
58 views

What do you call a map that shows the closest distance to a set of points?

This is one of those hard problems to Google since I don't know the right words to Google! I have a list of 6,000 retail locations in the US, and I want to know, for any given point, how far away one ...
2
votes
1answer
277 views

Ways to halo map text over a varying background? [closed]

I am ambivalent with using a halo effect. I am currently working on a small scale map of Africa showing the different types of vegetation and there are some crowded areas. In terms of consistency, ...
0
votes
1answer
36 views

How to export a map in lower size (11*17 inch) with all the parameters set up for higher map size but still looking good?

I am working with ESRI ArcMap (10.2) and have set up a map page size for 40*60 inch. I created a pdf and printed, it looks good. Next I printed with lower size 11*17 but the place labels does not ...
0
votes
2answers
225 views

Leaflet - map.fitBounds() / map.getBoundsZoom() BROKEN after resizing map?

https://jsfiddle.net/MaxHeadroom/s6h40xrn/ If you resize the map size, the zoom level should be adapted to always show the orange rectangle at maximum possible size. But fitBounds seems to be broken ...
1
vote
1answer
101 views

Get QgsLayoutItemMap from existing QPT Layout

I created a QPT model with a map inside QGIS. The problem is when I try to select the map under pyQGIS : qpt = QDomDocument() qpt.setContent(content) layout = QgsLayout(QgsProject().instance()) ...
0
votes
1answer
99 views

Creating climate maps in QGIS? [closed]

I have millions of points having temperature and humidity information covering the Middle East and North Africa (MENA). How can I create animated heatmaps/hotspot maps of change over time? The data ...
0
votes
1answer
22 views

CARTO Mobile SDK.UWP (C#) Get always get current map's south-west MapPos and north-east MapPos

How can I always get the current map's south-west MapPos and north-east MapPos when I zoom in/zoom out the map or drag the map? I want to create a dynamic bounding box for Carto Map.
1
vote
0answers
23 views

Create a path in mapping software and export as vector?

Is it possible to map a route in any mapping software (OpenStreetMaps, Google Maps/Earth, QGIS, etc. preferably Open Source or free) and export this route as a vector (PDF, AI, SVG etc.)? I'm only ...
0
votes
0answers
33 views

“Story/Web map” that allows user to select features and get a summary of attributes

Is there a way to create an interactive app/web map/story map that allows the users to select a combination of polygons and get a summary of their attributes, esp. their total area, in a table or pop-...
2
votes
0answers
73 views

Map Projection invented by woman

Is there any map projection of the earth that has been invented by a woman? Context: I am starting a math outreach program and one of the activities I am proposing involves playing with different ...
0
votes
0answers
14 views

How can set “wait time” in CZML?

I have some position & time values describing movement of some vehicle. But in some time intervals vehicle wait in some position. I cant figure out how can i set waiting time.? In the example ...
1
vote
0answers
92 views

MapBox GL JS - Markers or Layers

Ok. I've a server which send me a geojson data, according to the specifications. I'm using mapbox gl js, and not sure what type of method to choose: 1) creating a layer with geojson properties of ...
2
votes
2answers
149 views

Cartographic generalization: Dissolve “neighbour” / bordering polygon objects in QGIS

I have a polygon layer with buildings for the area of the whole city. My question is how to dissolve/aggregate/merge only those buildings, that are "neighbours", in a sense that they share at least ...
4
votes
1answer
61 views

Can QGIS produce a Stage Storage Plan?

I work for an engineering firm, and my question to the forum is: Can QGIS produce a stage storage plan for multiple drainage basins? I am attaching an image of what I am talking about. Currently, we ...
0
votes
1answer
250 views

portrait orientation in layout of qgis.3.2.0(bonn) [duplicate]

How to set a map in portrait orientation in layout of qgis.3.2.0(bonn).there is no option in layout view for changing the orientation of paper.
2
votes
0answers
48 views

Cartographic numbering of points on map

Usually when I create maps with a set of numbered points (e.g. numbered locations on the map which link across to a separate table describing these points) I try to number them in a rough "reading ...
1
vote
0answers
37 views

PostGIS generate lanes for multilinestring map (ST_OffsetCurve)

I currently have a road network for specific area as multilinestrings. It only shows the road as a single line. I would like to generate lanes for that as well, using some kind of offset. The problem ...
4
votes
1answer
106 views

Mapping parliamentary results (categorical data) by share of polygon in QGIS

I'm trying to recreate the fill effect in this map: Where each polygon is filled based on the percentage of vote each parliamentary party gained. The author wrote "I converted the inner polygons into ...
0
votes
0answers
35 views

Is there a way of getting map subsections referenced on main map in qgis? [duplicate]

Is there any way of getting subsections of a map as in, you have a larger map area in which you want to take out 3 smaller areas (A, B and C), you reference them on the "main map" Currently I have ...
5
votes
2answers
99 views

How much of these USGS topographical contour maps are artistic license?

I was looking at the below map and got to wondering how much of all of those minute squiggling contour lines are real detail and how many are just artistic flair: I could imagine that satellite laser/...
1
vote
1answer
156 views

Drawing point not under mouse cursor

I'm trying to draw on a map using this OpenLayer tutorial. initDrawEvent() { var draw; var source = new VectorSource({ wrapX: false }); var vector = new VectorLayer({ source: source }); ...
4
votes
1answer
138 views

Making a transparent globe in ArcGIS Pro

In ArcGIS Pro (2.1), I'm attempting to create a 3D scene in which the underlying basemap is transparent such that I can see through the oceans. I'm trying to get an effect similar to this. Or this: ...
1
vote
1answer
224 views

How to offset lines in QGIS that share the same origin and destination

I have a set of lines in QGIS that represent travel between destinations. Some of these lines of travel overlap - for example, traveling from Rome to Paris, and then back to Rome, and then on to ...
1
vote
0answers
156 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
0answers
209 views

Georeference map with just one known point

I have an old scanned topographic map I have to georeference. Unfortunately there is no coordinate system stated and it has just on reference grid point on it. Besides that it states in the down left ...
0
votes
0answers
56 views

Sweeping across a map: how to calculate lat lon

I am trying to retrieve information which is overlaid on Google Maps. I can get a JSON response with coordinates for the points I'm interested it. The API to get the JSON response expects a NE and SW ...
1
vote
2answers
190 views

Why North direction is shown in red color on aspect maps?

I have been recently exposed to an aspect map that looked like this: I wonder why North-y orientations (N, NE, NW) are shown in red and orange while South-y orientations (S, SE, SW) are shown in ...
0
votes
1answer
47 views

What CRS is used in historical maps on IEG-MAPS

Do anyone know what coordinate reference system is used in set of historical maps of Europe from Leibniz Institute of European History Below sample map from set
0
votes
0answers
175 views

Custom regions plotting in highcharter/leaflet in R

I need to plot the following regions (Western USA, Eastern USA, Africa, APAC (excl. China),Canada,LAC,Europe,Greater China,Middle East) in a map in R (highcharter or leaflet). Currently I don't have a ...
0
votes
2answers
185 views

QGIS and Google map doesn't match/lineup!

I am trying to draw a map but in QGIS the map doesn't correctly show one of my study area (Station-4) correctly; however, the Google Map does. What should I do now to get a correct map (Station-4) ...
1
vote
2answers
68 views

Where do map services get their town name data from? [closed]

Looking at several map services, they all contain the names of basically every place where several humans live. Cities and towns are quite easy to find, but they all contain townships/parishes/...
1
vote
1answer
50 views

What is correct term for map with shaded country outlines?

Many world maps, especially old ones, often have shaded country outlines in a particular color. The saturation becomes weaker towards the inside of the country and is strongest at its borders. Here is ...
0
votes
2answers
52 views

Proper labeling when multiple maps on one sheet of paper [closed]

Suppose I want to display 4 maps on one sheet of paper, all with the same scale and same direction for North. Assume they all have the same projection and datum. Is it customary to place a unique ...
0
votes
1answer
1k views

Add GML Layer in OpenLayers 4

I'm using OpenLayers 4 to build a web map. Now I'm trying to add a GML layer to the map but only one feature of the layer/GML is painted in the map. So I don't know what could be wrong. The way I am ...
1
vote
0answers
34 views

Complete map of Oceania (physical, from satellite,…) to use as background [duplicate]

I need to use a map to show a cartographic output based on raster elaborations. Specifically, I want to use this map as background to overlay over it some cells of my rasters layers. The type of map ...
1
vote
1answer
234 views

R - cartography package - position of legend?

I'm using the cartography package in R to plot a choropleth map. However, I have a problem placing the legend, which can be placed by means of the legend.pos argument, but which always overlaps with ...
4
votes
1answer
343 views

Mapping several maps with the same colorscheme in tmap

How to control the dot colors in tmap? I have the following code: png(filename = "test.png", width = 210, height = 297, units = "mm", pointsize = 1, bg = "white", res = 1200) for (j in 2012:...
2
votes
0answers
105 views

producing smooth iso polygons from raster surface? [closed]

The objective is to turn a raster surface (double value type) into smooth, visually appealing polygons representing iso-levels. I cannot stress enough that these must be visually attractive. Jaggedy ...
5
votes
1answer
316 views

Automatic bus route map without overlaps

I'm working with drawing maps of all bus routes in a defined area (municipality) in QGIS. I have a problem about showing two routes with the geometry (the same road) parallel. I know it's possible to ...
2
votes
1answer
143 views

D3 Projection outputs Map wrong

I made a map with qgis. Unfortunately when I want to render the map with d3 map renderer, it shows weird structures. The map is in "1:116'622'714" scale. Could this be a problem? The website should ...
5
votes
2answers
157 views

Unfolding polygons and other feature classes in Antarctica-like fashion using ArcGIS Desktop?

Is there a way in ArcGIS Desktop 10.4 to 'unfold' (reshape/modify) feature classes, e.g. a polygon of a circular city, to make them look similar to a Mercator or plate carrée projection of Antarctica, ...
2
votes
1answer
40 views

Displaying multiple quantitative variables without clutter? [closed]

I am working with a set of data which represents total persons at different pay levels. There are 4 different pay grades which ideally would all be displayed on the same map. I am new to ArcGIS and ...
1
vote
1answer
160 views

How to find map tiles' parent tiles?

I am wondering how to find the parent map tiles of a particular tile or the tiles contained within a particular map tile. I know tiles usually have the structure of somedir/{z}/{x}/{y}.png/jpg and I ...
1
vote
1answer
76 views

What does “faceting” mean in a geo/map context?

I saw some folks talking about "faceting" in relation to a map data display, what does this mean in general terms? Examples?
0
votes
1answer
40 views

Overview map size related to the main map rule

My question is as simple as it's title implies. I have a map scaled in 1:20.000 and print it in a A0 paper. Also, I want to add an overview map in it. I wanted to ask if there is any rule regarding ...