The study and practice of making maps.

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3
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1answer
76 views

How to plot a full hemispheric orthographic projection in R

I want to make a plot like that using R: All I want is the country borders as seen from outer space, no fancy colors needed. It seems I need to use the spTransform function, but it gives me a "non ...
0
votes
2answers
98 views

Curved Arrows showing trade ARCGIS 10.2 [duplicate]

I have 10 points that represent the centres of countries. I want to show with arrows the flow (some kind of trade) from one country to another. The way that my table of attributes is constructed is ...
0
votes
1answer
306 views

Creating distributive flow line map showing movement of passengers from bus terminal to several destinations?

I'm writing my final year B.Sc thesis on transportation (pattern of passenger flow from a bus terminal to several destinations). I intend to use a distributive flow line method of spatial movement ...
0
votes
1answer
309 views

Flow Mapping Lines by Magnitude

I am attempting to map the flow of remittances into Japan using the FlowMapper plugin in QGIS. When I use the Style--> Advanced--> Size Scale field--> magnitude command, the lines become so thick ...
10
votes
1answer
2k views

How to create desire lines in QGIS?

How can I show the flow coming from an Origin-Destination matrix as desire lines? I need a result like the one in the picture below. I need to scale them proportionally to its value (coming from a ...
17
votes
7answers
4k views

Creating trade flow maps in ArcGIS for Desktop (or any free software)?

I am trying to represent trade flows on a world map where the size and direction of arrows indicate the exports/imports of a given country. This type of map is commonly found in magazines and ...
6
votes
2answers
114 views

Why has an orthographic projection been used in this NatGeo map?

I'm wondering why this maps uses an orthographic projection, resulting in 3 maps to view the whole world. What were the requirements or the reasons to choose this projection (why not Mercator ) ? ...
1
vote
0answers
90 views

Help embedding Openlayers map in Eclipse BIRT report

i have this code, it displays the zoom buttons only but it doesnt display my map. what could be the problem? <html> <head> <script ...
5
votes
6answers
6k views

How to represent several points with same coordinates on map? [duplicate]

I'm working on Arcgis 10. I have a point shapefile representing events with several points having coinciding coordinates (They have the same coordinates). For representing them in a dynamic way, I ...
16
votes
1answer
3k 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). ...
3
votes
1answer
95 views

How to document GIS analysis?

While I know I can annotate within a map, what is being used for documenting your work:sources of data, choices of color/per layer with each map made ( thinking along the lines of templateing, so as ...
69
votes
14answers
16k views

What Makes a Map be classed as Badly Designed?

A poorly designed map can not only look visually unappealing, but can convey the wrong message, which could lead to bad decisions being made. I would like to ask people to post examples (that are in ...
2
votes
2answers
126 views

Multiple font markers in shapefiles in QGIS?

I'm making a UK phase 1 vegetation survey map and require to show the dominant plant species in a given polygon. In phase 1 these are shown as 2- or 3-letter codes e g Ri, Cys. These codes need to ...
1
vote
2answers
2k views

Exporting maps at high resolution for a specified area

I am using ArcGIS 10.1 and am very new to it. I have Bing Maps aerial imagery of a particular road intersection and I want to export the map as a TIFF at a 1:1000 scale. When I zoom in and then use ...
1
vote
0answers
29 views

Creating Interactive Map Using Something Other Than Google? [duplicate]

I have a Roleplay Forum, and I would like to add a map of my Roleplay World to the website. I would like my map to be clickable, and have each location take you to a place on the forum. I don't know ...
6
votes
2answers
2k views

Retain ESRI symbology in Mapinfo TAB

Is there anyway to retain/easily transfer symbology from ESRI to Mapinfo? The only process I found was posted in 2010 - https://groups.google.com/group/mapinfo-l/browse_thread/thread/883223ff4ae56809 ...
1
vote
0answers
86 views

ArcGIS SDK for .Net (used in WPF): update map's zoom parameters after changing base layer

I'm having the following issue: Suppose I have a Map object and 2 base layers (a world map and a street map). A world map doesn't let us view the map too closely. The street map allows us to view as ...
1
vote
1answer
49 views

Has anybody successfully added NFHL (National Flood Hazard Layer) to ArcGIS for flex?

I keep getting the following error when I add the map service to my application: apServer layer failed to load: Fault code: Channel.Security.Error Fault info: Security error accessing url Fault ...
0
votes
1answer
58 views

how to display movements of a moving object in cartodb

I have few GPS tracks with lat long and timestamp. I want to present them on a map and to show how the movement took place using the time series location values (X,Y,T). I searched a lot but could not ...
11
votes
5answers
6k views

Libraries to render vector-based maps in the browser

Is there a open source JavaScript library like leaflet or openlayer which can be used in a web or mobile application and loads vector-based maps instead of images? I only need the road information and ...
3
votes
0answers
30 views

How do I map points on a 2D map to a 3D illustration of the same area? [duplicate]

I'm looking for advice on how to build an algorithm that maps any point on a map to a point on another map, interpolating where needed. Let me better clarify with an example of what I concretely ...
0
votes
0answers
17 views

Map services error in Firefox bug but don't understand

I am currently harvesting many web map services on an online map view. The services are configured in Oracle (Toad). Most of the maps seem to be working apart from 10 or so. I can see them in the ToC ...
3
votes
2answers
299 views

Examples of ASCII-art maps

According to Wikipedia, ASCII-art is one of the earliest techniques used for digital graphical design. An ASCII-art technique can be traced back to 1939 and computer-art pioneers have used it since ...
2
votes
0answers
39 views

Generating a map from a shapefile using ms4w mapserver [duplicate]

I am trying to generate a map from a shapefie. Through some initial searching, I wrote the code below but I am getting just a white page. Below is my code: MAP # To enter comments into a mapfile ...
3
votes
1answer
53 views

Comparing data from two different time periods

I am trying to compare DWI frequency over the period of 3 years. I want to create 3 maps, with each one showing where DWI's occurred during 2011, 2012, and 2013. I have the point data for this, but I ...
2
votes
0answers
87 views

Using R to subtract the polygon area of one shp file from another

I'm looking to produce a map from two separate maps in R. My Maps files are as follows: ftp://ftp.cpc.ncep.noaa.gov/GIS/us_tempprcpfcst/610prcp_20140822.zip #Map1 ...
1
vote
1answer
65 views

Equal Area Projection for Central Ethiopia (37N)

Can anybody please tell me what is the best equal area projection for central highlands of Ethiopia. I am assuming Albers Equal Area Projection. Any suggestions?
2
votes
1answer
66 views

What is the correct cartographic projection to calculate a Voronoi tesselation?

I have a set of points with known geographic coordinates. I would like to compute a Voronoi tesselation from these points in order to obtain areas of influence. The geometrical area of each Voronoi ...
2
votes
2answers
47 views

Are CartoDB Map views by month or by year?

We have 10000 map views with the free version of CartoDB. Are they reset every month or is it the maximum views for the all utilisation ?
4
votes
3answers
504 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 ...
1
vote
1answer
44 views

Tilemill: Re-Export failed tiles after export

My Tilemill exports (MBTiles) tend to fail quite often lately... (Resume Tilemill MBTiles export after crash a bounty is waiting for anybody who helps me there btw ;-) ). We kind of solved the problem ...
1
vote
1answer
61 views

Finding coordinates of the image corner

I have a .bmp image with a map. For creating image i used a Ingeo 4.4 and function MakeImage() What i know: Height an Width of bmp image dpi Map Scale Image Center's coordinates in meters. What i ...
4
votes
3answers
2k views

Why does export to AI rasterize all my vector layers?

I have no raster layers in my map document and no transparencies. Yet the map is rasterized when exported to AI. (Map frame and coordinate grid are vector graphics but everything in the map itself is ...
7
votes
6answers
976 views

Making a map that can be easily resized or scaled

I've recently been dealing with a map requestor who wants maps resized at the very last minute -- from 8.5x11 to 22x34, or from large poster-sized to "something that can fit in a report" (those vague ...
3
votes
2answers
105 views

Step by step contour creation algorithm

I do seismic processing, and recently have been moving into doing contours. I have a question on the exact way this is done. I have watered down my problem so that I can understand from 'first ...
1
vote
0answers
49 views

Show large information in a map (millions of points)

I have millions of points (census data) about 1.5Gb in a text file. But I only want to show an area based on this points like a heat map, so maybe I have to build polygons based on these points. What ...
1
vote
1answer
86 views

MapXtreme Java Edition

I'm learning GIS in Java with MapXtreme Java Edition but I can't find MapXtreme Java Edition file setup for Window (trial). Can you share link download or software for me?
3
votes
1answer
157 views

How can units be defined in QGIS for the Rasterize tool?

I am using QGIS 2.4 (Chugiak) via the kyngchaos build for OS-X. My question is--when using the Rasterize tool to convert a point vector layer to a raster and using the "Raster resolution in map units ...
2
votes
1answer
32 views

Smart quotes in ArcGIS (titles, legends)

Is there a way to ask ArcMap to use "smart quotes" in map titles, legends, etc.? This is what I've currently got on my map: I'd like the quotation marks and apostrophe to be curved instead. Pretty ...
1
vote
3answers
70 views

Geographical media coverage map - USA

I'd like to know if there are some maps giving the geographical coverage of the media publication, for example, a map giving the counties or even the cities where local newspapers are sold, and a map ...
2
votes
0answers
34 views

QGIS strongly offsetted symbols for categorized layers not visible on layer list (layer panel)

I am constructing a symbology for telecom analysis, which so far is mainly point and line features. So far it is working very well except that I have to offset the symbols to be able to avoid ...
1
vote
0answers
102 views

How to understand google map overlay type from object (polygon or polyLine)

var Line = new google.maps.Polyline({ path:predectionArray, editable: false, strokeColor: '#FF0000', strokeOpacity: 1.0, strokeWeight: 2 }); var Rect=new google.maps.Polygon({ ...
4
votes
0answers
112 views

Mask Bridge with Road

Is there a tool to create mask between bridge line/point on road? The requirement to have gaps 0.2mm between road and bridge and the offset fill with white color. For now, I add a white line attach to ...
1
vote
0answers
105 views

Displaying graph with value scale on Y axis using ArcGIS for Desktop?

I have to symbolize my vector layer with Bar Graph in ArcGIS for Desktop. Along with the graph i have to display value scale on y Axis. Is this possible? I am using ArcGIS 10.2 for Desktop but ...
3
votes
1answer
61 views

How to display bidirectional flows?

I'm working on a map showing oil shipping. Basically, I have a a series of nodes/line segments that make up the shipping network. I've joined the sums of oil that traveled along each node, so can ...
1
vote
1answer
22 views

dermacation label

i have 3 different features which are country.shp, division.shp district.shp what should i do if i want to make the label is arrange like figure 1 because when i label all the features using ...
1
vote
1answer
124 views

Is there a gallery of QGIS maps anywhere?

Specifically, I want to see the gorgeous map of Chugach State Park that you see when starting QGIS 2.4 "Chugiak". Is there a website out there where people share maps? I would like to share and see ...
5
votes
2answers
130 views

Library to produce pretty print maps including rasters

I've come across a variety of libraries for easily producing maps for printing, in a fully reproducible way using some sort of code or configuration file. For example, Kartograph looks lovely, Vincent ...
0
votes
4answers
348 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
1answer
41 views

Are there any simple map data sources like world.dat

I recently came across this blog post www.gnuplotting.org/plotting-the-world/ that used a file that holds a basic map of the world. Is there a name for this kind of data. Also is there a repository of ...