The study and practice of making maps.

learn more… | top users | synonyms (2)

1
vote
1answer
36 views

Finding and loading global population density raster data into R?

I am using the Bioclim dataset for a maxent project right now, but I want to add demographic predictors along with climatic ones. I have the 19 layer raster data from Bioclim and I'm hoping to use the ...
18
votes
4answers
2k views

Making map where overlapping symbols increase Opacity?

I was looking at some maps like: Map from Ship Logs or the Facebook worldwide friendships Mapped (via the Flowing Data blog) These Maps look good because single lines are almost transparent, and ...
3
votes
2answers
4k views

How to make a raster layer transparent via MapServer

I loaded a PostGIS raster Data through OpenLayer and Mapserver. The code inside the OpenLayer is as following : localWMS = new OpenLayers.Layer.WMS( "Local WMS layers", ...
28
votes
9answers
4k views

Good websites for map-lovers?

Do you know some good websites for map-lovers? I often visit strange-maps, cool-maps, makingmaps and hipkiss.org. Do you know others?
18
votes
4answers
5k views

What is a good resource for learning to hand draw a map?

I've been wanting to go old school & draw some maps by hand... Something like you might see on the first page of an adventure novel. I've found next to nothing on the web and am hoping that one of ...
0
votes
1answer
44 views

Are there any crowdsourced hand-drawn cartography projects?

I just came across this lovely hand-drawn, yet OpenLayers-enabled, map of Reykjavik: http://www.reykjavikcentermap.com/ It's obviously a labour of love for some talented artist, but it got me ...
4
votes
1answer
71 views

How to match symbology between two layers

I have two point layers: one shows the number of people in a county, the other shows the number of people who receive a particular service in that county. I am symbolizing them both as "proportional ...
1
vote
1answer
326 views

Using OpenLayers 3 Feature onclick event?

I looked for a way to fire onclick event and I found Adding event handler to feature in OpenLayers 3? at Stack Overflow. I undestand from this question is that there is no event onclick to features. ...
4
votes
5answers
146 views

How to visualize point accuracy with buffers in QGIS?

I have a CSV file that contains 3 columns - Lat, Long, and Accuracy. The Lat and Long fields contain point data in decimal format. The Accuracy fields contain a numeric values that indicate the ...
4
votes
2answers
70 views

Arcpy mapping text element reset

I am writing a script to create thousands of maps and I am trying to create a table that updates for every map. Basically an updating table of the information specific to each map. I have been trying ...
55
votes
11answers
5k views

Visualizing speed of movement on static (= printable) map?

Imagine you're tracking, for example, vehicle or animal movement and receive regular GPS position updates. How would you visualize speed of movement on a static (= printable) map? I've been coloring ...
2
votes
1answer
54 views

Leaflet marker is not displaying

I am currently having slight problem on displaying marker in the leaflet. I have used the following codes on displaying marker and map, however the map is displaying flawlessly but the marker is ...
2
votes
1answer
263 views

QGIS Map Composer goes blank, outputs corrupt PDF

I am using 64bit 2.10.1-Pisa on Windows 10. When I set up my composer to print, everything looks fine until I try to print or export. The composer goes completely blank and outputs a corrupted PDF ...
14
votes
3answers
664 views

How to improve cartographic visualization of overlapping polygons?

I need some advice about how to improve the visualization of cartographic information. User can select different species and the webmapping app shows its geographical distribution (polygonal degree ...
16
votes
5answers
2k views

Rendering overlapping lines

I am making a map containing information about public transportation: busses, trams, etc. The map will have a layer containing for example the tram lines. Each line has its own colour, and is ...
16
votes
1answer
5k views

How to represent overlapping lines in ArcGIS for Desktop? [duplicate]

I have lots of lines (in one feature class) which share the same location but I want to represent them as lines that are next to each other because they have different properties (different OWNERS). ...
13
votes
8answers
4k views

How to obtain overlapping semi-transparent circles effect in ArcGIS for Desktop?

I have been trying to obtain the following markers effect. How can I do the same in ArcGIS? This image is from a book.
7
votes
1answer
182 views

Group and align icons in QGIS atlas

I am making an atlas of protected areas using QGIS. I am using version 2.12, but this question will probably also apply to version 2.14 as well. Several points of interest (poi) objects are presented ...
1
vote
0answers
15 views

How to control layer visibility in the Map Composer Overview map? [duplicate]

I wonder if it is possible to choose which layers would be visible in the Overview Map loaded in the Map Composer. Note that this is already possible for the Overview Panel in the QGIS Desktop: for ...
0
votes
1answer
288 views

Why do Web ADF Map and MapResourceManager maintain their state in session this way?

I'm using ArcGIS Server Local datasource. ArcGIS Web ADF MapResourceManager control maintains resources added once until session is abandoned. Why does it do so? Why not just use viewstate? Map ...
1
vote
0answers
34 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 ...
30
votes
3answers
6k views

How to hide “internal” polygon boundaries?

Our task is to draw a lake with a solid outer perimeter line and no lines between internal wetlands, shoals and shallows? 'Tis a relatively straightforward process with Arcinfo coverages and Regions, ...
1
vote
2answers
61 views

ESRI ArcMap Legend Formatting

Is there a way in ArcMap Legend Properties to make the legend above look like the picture below?
4
votes
2answers
37 views

How to make a fixed block of text in cartodb instead of infowindows?

I started to use CartoDB today for a school project, it is here : https://elenab.cartodb.com/viz/3c08e76a-ec4a-11e5-8d14-0ecfd53eb7d3/public_map But what I would like to do is to have a block of text ...
1
vote
2answers
125 views

Reordering Category Layers in QGIS

I was wondering if there is a way to reorganize the layers when applying a style based on a categorizing value? I have many values, but I would like to rearrange them alphabetically. In ArcMap there ...
1
vote
0answers
9 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 ...
1
vote
0answers
28 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 ...
0
votes
0answers
22 views

D3.js geojson rendering problem

Step 1 I have install mapshaper in my machine and browse all those required file along .shp, .shx and .dbf file . Step 2 : I am able to see required shape of this particular district in mapshaper ...
0
votes
1answer
53 views

Setting up Hot Key to zoom to Map Scale?

I'm wondering if I can set up a hot key to zoom to 1:4500 whenever I use it. Also if I can set up a hot key to zoom in to 1:1250. I have these two extents set up in the custom extent area and when ...
-3
votes
2answers
8k views

How to create a map legend in ArcMap? [closed]

Finished all my analysis and would like to make a legend to display the data in the map I have.
3
votes
4answers
668 views

Examples of Creative Cartography

I am looking for some examples of creative cartographic output. I am planning for something like a mixture of cartography, graphic design and spatial information. The output will be initially in ...
7
votes
7answers
8k views

Manually classifying graduated data outside of range in ArcGIS for Desktop?

I have two shapefiles representing grids with values that are symbolized with graduated colors, shown below: You can see that the two shapefiles encompass similar ranges of data, but assign ...
30
votes
4answers
4k views

How to use directional shading on boundaries for cartographic effect?

The attached screenshot of a National Geographic map shows some beautiful directional shading of boundaries. I'm trying to reproduce this sort of shading for a burn perimeter map, as I want to ...
29
votes
2answers
12k views

Styling road maps with QGIS?

I am trying to design a beautiful map using QGIS. As I'm a software developer not a designer, I was hoping that this will be easy, but it isn't! There is a similar question here Where to find QGIS ...
0
votes
0answers
33 views

Inserting scale bar in ENVI without resolution loss

I am currently using ENVI version 5.3.1 and am trying to insert a scale bar to the image, in addition to the north arrow already provided by default. I have tried searching on how to do this with most ...
2
votes
2answers
316 views

How to gradient buffer background layer?

I have a map that was created by a contractor working for my employer before I began. I am not sure what GIS software the map was created in but it has an effect I would like to be able to reproduce ...
13
votes
2answers
11k views

R : convert a spatial polygon objet to spatial polygon data frame

My goal is to modify an existing shapefile by merging certain polygons. After importing the shapefile and using the UnionSpatialPolygons command, I get the polygon outline that I want. However, this ...
0
votes
0answers
13 views

Looking for a Map View App like Sky View that will give me POV of landmarks

I am trying to find an app that will allow me to mark locations on a map, then switch to a camera view mode and show those landmarks. For example, if you notated several mountaintops on the map, ...
1
vote
5answers
852 views

How to change dimension annotation style in ArcMap 10.1?

For some reason, the option to add a "New" or "Import" style is grayed out. I tried creating a different dimension annotation feature class with the style I want, and then copy and pasting the ...
0
votes
0answers
29 views

How to Add modify feature into my webmap script?

I am using OpenLayers. I have a web portal with all the option. How can I add the modify feature into it?
1
vote
0answers
45 views

Formula for Nicolosi Globular Projection

What is the formula for the Nicolosi Globular projection? In other words, what is the function that maps the coordinate (φ, λ) on the sphere to the coordinate (x, y) on the plane? You can assume ...
1
vote
2answers
54 views

Is there an equivalent to Map unit in ArcMap?

I need to have points, lines and texts in ArcMap in map units like in QGIS so I can zoom to the feature and see it like it's a raster. Is there anything I can do to manage that? I use ArcMap 10.2.2 ...
1
vote
0answers
319 views

Wrong Scale Bar in Map Composer

I am attempting to add a scale bar into QGIS Map Composer for a single layer showing a map of Jervis Bay, NSW Australia. I have changed both the project and layer CRS to 'MGA56 (EPSG:28356)' and have ...
1
vote
0answers
53 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 ...
184
votes
50answers
64k views

What Makes a Map Beautiful? [closed]

Oftentimes when we make maps it is based on our subjective interpretation of what is aesthetically pleasing. I would like it if people posted examples of beautiful maps, displaying any phenomena in ...
-1
votes
1answer
26 views

using qq map tiles with the leaflet.js :Uncaught Error: No value provided for variable {x16}

I tried to use qq map tiles with the leaflet.js but it has an error "Uncaught Error: No value provided for variable {x16}" and cannot show map. My code var map = L.map('map'); ...
7
votes
2answers
140 views

How to use real GIS tools to make skewed area maps for infographics

I'm a junior GIS tech, trying to make a map as part of an infographic. I wanted to do one where the size of polygons varied with a particular numeric attribute. Something like this one, where each ...
4
votes
1answer
184 views

Map projection classification - Tissot's indicatrices are perfect circles, but the projection is not conformal

Recently, led by the perfectly circular shape of the Tissot's indicatrices all over the projection plane, I have concluded that a particular projection is conformal. However, after calculating angular ...
1
vote
2answers
77 views

How to extract values from a raster using R?

I'm a beginner at using R software, and I'm attempting to perform a percent linear stretch on the following raster data: > KBnew #class: RasterLayer #dimensions : 27018, 26389, 712978002 ...
5
votes
1answer
93 views

ArcGIS - Way to make interior of selected polygons partially transparent?

Is there a way to make the interior of selected polygons partially transparent as there is with polygons of a layer?