Questions tagged [cartography]

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

96 questions with no upvoted or accepted answers
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164 views

How to visualize fuzzy/approximate locations

I need to visualize a mixture of accurate and fuzzy/approximate locations on a web map. The user should be able to instantly recognize approximate locations from the marker used. Are there any best ...
3
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0answers
172 views

How to effectively highlight small polygon areas in small scale maps

I've recently been working on a thematic map which shows a large area at small scale, containing a number of different polygon layers showing different feature classes (unfortunately I can't share the ...
3
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0answers
76 views

Rotation of Text in a layout to be dependent on arbitrary Map

I have a Print composer with two map windows (MainMap and InsertMap). I also have a bit of text which I want to rotate on the Composer and it to be dependent upon the rotation of MainMap what ever ...
3
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0answers
988 views

Is there any way to create a legend from label classes or annotations in ArcGIS 10.2.2?

I have a single "geonames" layer with 56 label classes and another few layers with around 10 label classes. Each class has a different font and colour or graphic. I would like to add most of these ...
3
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0answers
224 views

Realtime vector engine

Hey guys, I am looking for a real-time GIS vector engine that is to be used on a device using Embedded Linux/Qt (commercial or opensource). Any suggestions? Thanks. The usecase is a non-certified ...
2
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2answers
87 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
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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 ...
2
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0answers
55 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 ...
2
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0answers
202 views

Uniform distribution of dots on world map depending on latitude

I would like to plot a map looking something like this: I'd like to then connect each dot with the corresponding country and use it to display statistics. Therefore I need a set of coordinates, ...
2
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0answers
419 views

How can I rotate a map layer in QGIS so that center of map always have north upwards?

I'm working in the polar regions and make maps in different scales. The convention is to show e.g. the Antarctic continent with the prime meridian upwards on the map and polar stereographic projection....
2
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0answers
183 views

point in multiple polygons

I have a point (lat/lng) and a collection of geofences (polygons / circles / rectangles) Simply put, I want to know if the point is inside ANY of the geofences, it's not important which one. I know ...
2
votes
1answer
158 views

Customising QGIS Map Composer default output directory and file name suffix?

I am using QGIS for map making , I am adding multiple vector and raster layers and then finally for map making I am moving to the map composer. When I am exporting the map from Map composer , I want ...
2
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0answers
281 views

Suitable font size for road network for A0 -A1 print size QGIS

I need to print big paper maps, Im using QGIS to design my maps. But I would like to get advice on suitable front size for road names. With the map as big as A0 I can basically fit all text labels for ...
2
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0answers
227 views

Loading USGS 1:24,000 quads into Garmin GPS-receiver — how to convert to a kmz Garmin understands?

I have downloaded USGS 1:24,000 topos (the classic one, not the useless US Topo) from the USGS Map Locator & Downloader. How can I load those into my Garmin GPSmap? Following advice at this ...
2
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0answers
151 views

Random color ramp issue

I have one set of polygons and one set of points sharing a common attribute (value 0-503). When applying style with new random color ramp (Categorized) the first set of polygons is displayed ...
2
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0answers
216 views

How to filter the legend according to the current Atlas page?

I filter the legend by map in the map composer. Some symbols must be used for two legend entries, as you can see below. When I start the atlas tool, the legend displays - if the symbol contained by ...
2
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0answers
131 views

QGIS 2.12 map composer issue with vectors

I am making a map that includes all kinds of vector layers; the map looks perfect in QGIS 2.12 Lyon as well as in map composer. None of the layers have scale-dependent visibility. I have the ...
2
votes
0answers
281 views

How to create isometric 3D map with postgis

I am looking for a way to create isometric 3D maps based on data stored in a PostGIS database. My idea is to create a PostGIS function that will return a SVG image like the one below. It is easy to ...
2
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0answers
104 views

ArcGIS Server Map Service - Best Way To Visualize Coincident (Identical) Point Features

I have an ESRI Map Service serving out several point layers with 10k+ point features. Because of these high feature counts, I use a dynamic map service where a symbolized image is generated on the ...
2
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0answers
36 views

Are there any NTS index maps showing the most recent update?

For the Canadian National Topographic System, are there any index maps available that do not only show map numbers throughout the country, but also the most recently available update for each map? As ...
2
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0answers
715 views

updating the extent automatically in the print composer

Just started using QGIS (after trying what I need to in GRASS). Using the Print Composer, I've put down a map which is based on the map in my map canvas, which is what I'll want to print. Then put ...
2
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0answers
188 views

Why is my map not in the center when I load my map in OpenLayers?

Why is my map not in the center when I load my map in OpenLayers? And when I drag my map, it doesn't move sometimes. var maxExtent = new OpenLayers.Bounds(103.30029292030527, 24.39151279999997, 109....
2
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0answers
1k views

Splitting a bounding box into n amount of bounding boxes

Firstly, I've never worked in the GIS area before nor do I have much knowledge of the mathematics behind some of the stuff I am trying to implement. Perhaps i'm getting in over my head. My Situation ...
2
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0answers
193 views

Road Symbology Issues

I have preparing road symbology using Arcmap 10.1 version. When I was prepared attribute based symbology as a layer shown on symbols were overlapped. I have attached an example image to show the ...
2
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0answers
58 views

How to connect door nodes using a polyline

I am working on an indoor positioning project which need to transform CAD drawings to GIS shape files. I have transformed the file from CAD to ArcMap 10.1 already. My current problem is that how ...
2
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0answers
177 views

Grid perspective tool

I'm not a cartographer, but want to use a map for my project from world atlas book. I scanned the map, but no matter how carefully it is scanned, it's perspective is slightly distorted and it's ...
2
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0answers
590 views

How to create polygon “stamps” and extend lines by fixed distance? in QGIS

This is related to Does QGIS have these CAD editing functions? Cadtools have solved a lot of the issues I had but I need the ability to see how long a line is while I am drawing an orthoganal polygon?...
2
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0answers
218 views

Symbol Level in ArcGIS 9: 'Broken' look of symbols, how to resolve

I am using symbol levels in ArcMap to style roads so that I have a banded feel. My problem is that at intersections and sharp turns, the cartography gives a broken effect in the road. How can this be ...
2
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0answers
257 views

How can I modify the tiles size in Openscales or other ways to boost the application performance

I am developing an application in Flex that uses Openscales and GeoServer in order to provide a map in the background. It works but the perfs aren't really good; even if everything is on the same ...
2
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0answers
539 views

Why can't an “AI export” from ArcGIS 10 be opened in CorelDRAW X5?

It doesn't matter whether the .ai file is 1.5GB or 5MB, whether it's complex or simple; I always get the "The file cannot be opened." critical error. I use CorelDRAW X5 not Adobe Illustrator but ...
1
vote
1answer
14 views

Horizontal Raster Stretch Legend

Using this page I have displayed my legend of a raster legend horizontally. However I have not been able to format the labels to align directly beneath the tick marks as shown below. The second label ...
1
vote
2answers
204 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 ...
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 ...
1
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0answers
28 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 ...
1
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0answers
143 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 ...
1
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0answers
47 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 ...
1
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0answers
289 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
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0answers
95 views

What is the style of mapping used by Google Traffic?

I'm doing a piece of work that involves mapping traffic flow, and will be displaying it in a way that Google Traffic does. I know how to make the maps using QGIS, but is there a specific name for this ...
1
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0answers
114 views

What causes the striations in this slope map?

I have created this slope map using a 10m DEM from alabamaview.org and I just noticed it has small striations (zoom to see): What could cause this, and is it a big deal, or am I over-analyzing the ...
1
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0answers
47 views

CSS and border transparency around web map markers

The issue is that the image that I have in a web map visualizes map markers and place icons with white space around them. I checked this in the FireFox browser developer console and it seems to be an ...
1
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0answers
179 views

Marker click listener jsf2leaf

I am using jsf2leaf library to add a map to a web application using primefaces. The map and the markers(popup message when clicked) are displayed correctly, however I want to display a primefaces ...
1
vote
0answers
227 views

a localised 2D coordinate system from GPS coordinates

I spend a few days reading about coordinate systems, map projections, datums, etc. Since I am new to gis, I am not confident I am doing this right. Problem at hand: I have a GPS device that gives ...
1
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0answers
153 views

What would be appropriate output pixel size while converting contours into DEM/DTM?

I have contours having 10 meter (32.8 feet approximately) interval. Now, I am using these contours to Interpolate a hydrologically correct raster surface in a bid to calculate slope and other ...
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0answers
121 views

Keep the same space between lines in OL3 despite scale

I have 2 lines (in 1 layer - ol.layer.Vector) for 1 road (each line represents different direction). The problem is that when you zoom out then you see only 1 line because they "merge" together as ...
1
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0answers
202 views

Pixel sizes, cartographic scales and maps

In spite of being a widely discussed topic, I have not been able to find the complete answer to my concerns regarding scale's use in maps preparation. I am interested in finding in the relationship(s) ...
1
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0answers
163 views

from/to ellipsode to/from cartesian conversion

i am trying to convert from/to ellipsoidal coordinates (lat,lng,alt) to/from cartesian(x,y,z) i wrote the below code to do the conversion, but given the initial values of the gpsLat and gpsLng i ...
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0answers
95 views

Custom labels - aligned to rectangular objects, in a specific position and with multiple attributes using Mapinfo?

Can the following be done in Mapinfo? It should be formula based without manual formatting as performed by my predecessor to get the following output. So Grave_No on right parallel to the y axis of ...
1
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0answers
78 views

Custom labeling with same angle as rectangular object and specific position using QGIS?

Can the following be done in QGIS? It should be formula based without manual formatting as performed by my predecessor to get the following output. So Grave_No on right parallel to the y axis of ...
1
vote
0answers
81 views

Determining printed map projection?

A friend of mine is working on a small project to map receding North Pole summer sea ice minimums by decadal averages on a wall-paper map. Unfortunately, it seems as though the map projection for ...
1
vote
0answers
107 views

Resolve Building Conflicts - the open source way?

In ArcGIS there is a tool called Resolve Building Conflicts and I'd like to achieve the same using only open source tools (QGIS, GDAL etc), preferably on Mac OS instead. In the long run I'm trying to ...