Questions tagged [cartography]
Using artistic and scientific principles for creating maps and graphically representing geographic areas
5
votes
2answers
157 views
Masking layers by a vector polygon layer in QGIS
I have a vector layer of buildings:
and a polygon layer coloured by some quantity:
and I want to mask one by the other to produce this:
This can be done by setting the blend mode to "Multiply" with ...
1
vote
1answer
80 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 ...
0
votes
0answers
11 views
Define new pattern for linestyles in ArcGIS Online
How can I create new patterns for linestyles in ArcGIS online? Currently, it seems that I can only choose from 5 patterns.
I would like to create line patterns such as
5
votes
2answers
208 views
Adjusting flow map styles in QGIS 2
In one project, I am trying to adopt marvellous styles for flow maps created by @underdark a.k.a. Anita Graser.
At this moment I have the following output
Shapefile was created with the usage of ...
1
vote
1answer
28 views
Choosing method for labeling graduated data that is space efficient? [closed]
Could someone recommend the best standard approach to labeling graduated data ranges?
I was thinking of the following but would like to know if this is industry standard:
Less than 0
>0 - 100
&...
1
vote
2answers
140 views
Issue with QGIS 3.4.4 Atlas legend not showing all map items
I have a layer within my project that has been filtered to show the associated point with the associated Atlas feature:
But when in composer view and there are both point types within an Atlas ...
0
votes
1answer
65 views
Linearized map of rivers - what is this called? [closed]
I am looking for a "linearized overview" map (as in the figure below) of the Brahmaputra river. I don't know the exact name of this type of map. Do you have any suggestion on what I should look for, ...
1
vote
1answer
41 views
Citing data on map layout?
I am working on a thematic site map for a scientific study. In addition to my own data that will be displayed on the map, I have included reference data from U.S. federal agencies (e.g. National ...
1
vote
0answers
27 views
Plot only the borders of the states excluding the national boundary
Is there a way I can just plot the boundaries if the states excluding the national boundary of the US? I have both nation as well as state shape files from the census data. I would preferably like to ...
3
votes
2answers
74 views
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
57 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
vote
2answers
39 views
Name multiple authors on a map [on hold]
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
285 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
68 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
297 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
38 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
619 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
248 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
168 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
23 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
24 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 ...
2
votes
0answers
75 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
19 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
111 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
181 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
72 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
428 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
51 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
40 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
128 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
38 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
148 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
194 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
163 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
397 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 ...
2
votes
0answers
207 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
257 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 ...
1
vote
2answers
322 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
61 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
2answers
245 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
75 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
59 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
68 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
36 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
291 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
575 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
180 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
478 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
161 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 ...
