The study and practice of making maps.
13
votes
7answers
2k views
How to create a trade flow map in Arcgis 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 ...
7
votes
1answer
134 views
What does this style of line on Topographic maps indicate
If I was reading the purpose of this stackexchange site right, I could also ask general map questions. Not necessarily regarding software.
Anyways, I was wondering if someone could inform me what ...
16
votes
3answers
537 views
Why do we use the terms “longitude” and “latitude” for a spherical body?
To specify a geographic coordinate we use the terms “longitude” and “latitude”. Far as I know, these terms derive from the Latin latitudo (=
breadth) and longitudo (= length). In German we use the ...
2
votes
1answer
28 views
Creating maps programmatically using ArcObjects. Adding legends, scale bars, north arrows?
I'm looking for some examples related to the publishing of maps programmatically to image format using ArcObjects. More specifically I would like to add standard map elements such as a scale bar, ...
4
votes
1answer
687 views
Auto zoom on multipolygon with leaflet
I have a geojson with a multipolygon and I want to fit this multipolygon to the map. The map center only on one polygon not on the multipolygon.
Here is my script
var map = L.map('map',{ ...
-3
votes
0answers
35 views
How to use The open source tool to make a web map [closed]
If I have several autocad files with layers(it stored map ), but it is of huge content, maybe a country map of china. How to use these original materials to produce a web map just like openstreetmap. ...
2
votes
1answer
29 views
How to symbolize different information that's joined to a single plot in a shapefile
I am a student doing an industrial survey in Windhoek, Namibia. We mapped different businesses and later did spatial analysis. Questionnaires were handed to different businesses and then that ...
1
vote
0answers
45 views
Map Matching? (Finding Nearest Roads…)
I am making Pedestrian Navigation System for my school
I created node and arc and digitized buildings with ArcGIS. Then, exported KML to use Javascript Dijkstra's Algorithm to find route.
So far, so ...
0
votes
0answers
28 views
Adding imagery or world topo map from arcgisonline to map
I have an ESRI Javascript API application that uses a local Map Service with various feature layers. Now I need to add Imagery or top maps from ArcGIS online as base maps.
I am trying the following. ...
-2
votes
0answers
49 views
How to convert shape file to .map format
i have made a .shp file from the srtm data for contour making.I need to get the output as >map format,with elevation details.If i am trying to convert into .bna there is some error happens along with ...
0
votes
0answers
13 views
can anybody explain how to create a wasp contour map in Q GIS? [duplicate]
can anybody explain how to create contour map,I need to export in .map format.
2
votes
0answers
359 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 ...
-4
votes
1answer
75 views
How to digitize a map in QGIS?
I am relatively new to QGIS and using it on windows vista.
Problem:
I have to digitalise an aerial map and then extract the coordinates.
I have absolutely no idea how to start
Thanking you in ...
8
votes
2answers
205 views
how to produce a Peirce quincuncial map?
As far as I know neither PROJ4 nor ESRI tools can apply the Peirce quincuncial projection.
Does anybody know what libraries/softwares can manage it?
2
votes
1answer
49 views
Script to either rotate existing text element or insert graphic element
I have about 300 maps that contain a text element that needs to be rotated. I am pretty new to python but I have heard how great it is. This seemed like the perfect task for python but I have had no ...
3
votes
2answers
273 views
Creating dynamic GIS charts in ArcGIS 10.1
I have generated a table which has road segments which get inundated during different flood events. I want to be able to add a pie chart to the map which shows that during each flood ARI (1y, 2y, 5y, ...
1
vote
2answers
61 views
Plotting a circle on a Web map to view the resulting coverage over a central location
Not exactly a GIS question but I hope no one will mind. Does anyone know of a website (something equivalent to Google Map) where you can indicate a location, give a radius and you can view the ...
1
vote
1answer
40 views
Data Frame Property options have changed
I have Googled and searched ESRI help files and experimented until I am blue, not to mention reloading ArcGIS Desktop10 for Repair and adding the SP5 to it. I no longer have the options of border or ...
124
votes
38answers
19k views
Examples of Beautiful Maps
Often times when we make maps it is based on our subjective interpretation of what is aesthetically pleasing. I would like if people posted examples of beautiful maps, displaying any phenomena in any ...
5
votes
1answer
38 views
How to design class breaks for a time series of choropleth maps?
I'm working with a time series of choropleth maps showing the same indicator for the same administrative boundaries, but spanning period of nine years.
What would be the most appropriate strategy of ...
4
votes
2answers
96 views
How to join number of point features into attribute of nearest line segment
I have point shapefile with lot of attributes, that represent road accidents and line shapefile with highways. What i want is to join attribute into line shapefile with value, that represent number of ...
7
votes
2answers
92 views
What does map scale refer to in map making / field survey metadata?
If I have, say, a printed map at the scale of 1:20000 and the legend says that it was mapped at a scale of 1:10000 does this simply mean, that the surveyors/cartographers made drafts & sketches or ...
1
vote
1answer
22 views
How to combine use gradient symbols for layer properties excluding 0?
I want to visualize my data by using graduated symbols. Now, there are some objects with value "0", they should not be printed on the map (which I solved by using rule-based symbols). But, anyway, "0" ...
4
votes
1answer
164 views
Stamen toner postgis setup
I'm trying to render Stamen's toner map with Landez which uses Mapnik. The style I'm rendering is from Stamen's toner project. I'm using the one which only renders labels (no lines). I imported the ...
2
votes
0answers
50 views
Is there any method to analyze data from fire protection events ?
I want to analyze data from events in fire protection a create some illustration of maps.
In short: my task is to find methods for data visualization. Data are represented by point layer (each event ...
5
votes
1answer
513 views
Printable Esri symbol sets, a.k.a. style references
Does anyone know of good printable documents of the as-shipped Esri symbol sets, also called Style References?
The new with Arcgis 10 ability to search symbol sets is a great boon, but one can still ...
1
vote
0answers
85 views
How can I map data points to OpenStreetMap (OSM) line data?
my goal is to filter measuring points of vehicles by mapping them to streets.
So I could filter out all the false data located in fields and rivers and so on.
I imported my data into a PostGIS ...
2
votes
0answers
63 views
Why do I get different output from gdal2tiles vs. maptiler?
I am trying to generate map tiles using gdal2tiles for an area much larger than MapTiler can handle. However, my tile caches are not showing up on the maps. I checked gdal2tiles by running the same ...
1
vote
0answers
91 views
Map missing in map composer and when I print map
I am new to QGIS and am probably missing something but when I set up a new composer and add a map to the page nothing appears. I have pressed the render button and the up date with no results. When I ...
4
votes
3answers
223 views
Why aren't 3D Globes used as the basis of GIS systems?
Maps have been around for thousands of years and have been widely accepted as the means of representing spatial information. We all know about several map projections,each with their merits and ...
17
votes
3answers
381 views
How much Water on Earth(USGS) : A Wrong Map representation?
I happened to read a USGS article, How much water is there on, in, and above the Earth? showing a representation of all the water(which includes water from Oceans, Seas,Bays,Ice caps, Glaciers, ...
2
votes
1answer
47 views
How to document GIS analysis?
New to QGIS & GIS-meta
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 ...
2
votes
1answer
262 views
Data Driven Pages and exporting PDF using Python
I am able to zoom into map_index shapefile rows for a group of mxd documents in layoutview and export zoomed record as a PDF document at the same time.
I tried to combine below codes to make the ...
0
votes
1answer
63 views
ESRI JS API - don't trigger onClick event when panning Map
I have a custom onClick handler for my map that is meant to add a point wherever the map is clicked. I'm finding that this function is triggered even when I click the map to pan. Is it possible to ...
0
votes
0answers
17 views
Changing the background colour in openlayers map [duplicate]
I have the following question - is it possible to replace that white background colour with blue? Tried for a very long time but no good... Also the code was generated, and i am new to this - so it ...
3
votes
3answers
74 views
How long for surveying quality GPS to get accurate 3D position information
I recently read an Ordnance Survey Blog article that seemed to suggest that it was necessary to leave the GPS device in use for four hours to gather requisite data. I am aware that "domestic" GPS ...
8
votes
4answers
290 views
Where to start learning how to make maps with QGIS?
I have no skills in GIS, "map-making," or any other map program. Been a county planner for 25 yrs, where there was always a "drafting" staff. I'm in another agency now and need to be able to produce ...
7
votes
5answers
467 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 ...
5
votes
2answers
765 views
Can shaded relief be “blended” with DEM colour ramp in ArcGIS to produce a more visually dramatic result?
Not being able to use true transparencies with ArcGIS colour ramps where only solid colours are allowed has me always wondering about how to improve the look of the surface in my maps without ...
2
votes
1answer
81 views
How to style a point based on Actual Attribute Values?
I have published a point layer in Geoserver, which is the data from a GPS Survey.
In addition to the geometry, my layer, also contains an Attribute for Accuracy, which indicates the Accuracy in meters ...
3
votes
1answer
63 views
How to create a small globe locator map in QGIS?
I've tried searching on gis.stackexchange and elsewhere but can't seem to figure this one out though it seems simple enough.
The type of locator I'm thinking of is similar to the one from the map in ...
2
votes
1answer
66 views
Where did the texture fill option go in QGIS 1.9 Master?
In the previous version (1.8) of QGIS you could select to fill a polygon using a PNG or JPG image. This option seems to have gone from QGIS 1.9 Master. I can get it by selecting the "Old Symbology" ...
1
vote
1answer
65 views
Overlapping lines representation
Cartography question.
I do have administrative boundries for counties in polygon FC. What tool do I use to prioritise display of features. In example, when lines overlap- I want to show only 1 dashed ...
8
votes
2answers
899 views
How do I combine high resolution and generalized hillshade rasters to produce enhanced shaded relief?
I often add LiDAR data to a map along with a shaded relief. Most of the time i have to generalize the LiDAR dem depending on the scale of the map. Still, there is often too much detail and mountain ...
1
vote
0answers
36 views
Is there a way to show outlines in a multipatch feature in ArcScene?
When viewed in ArcMap 2D environment, multipatch faces are outlined. When viewed in ArcScene 2.5 D environment, multipatch faces are not outlined, yet the symbol in symbology properties still shows an ...
19
votes
2answers
645 views
Color polygons so each is distinct from its neighbors
I'm using ArcGIS 10, and I have a layers of 2010 Census blocks, block groups, and tracts. There are thousands of polygons in these layers. I want to color them so that each is distinct from its ...
3
votes
3answers
673 views
Looking for good looking maps with nice colors for presentations
I'm currently working on a project where we need some good looking maps with country boundaries displaying the world. We do not need the details of the maps, but the colors are important. It will we ...
21
votes
4answers
345 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 ...
19
votes
9answers
1k views
Discontinuous or Interrupted map projections?
Do any of the current open source GIS softwares support discontinous projection systems? E.g. sinusoidal, dymaxion, butterfly, etc? If not, are there any affordable commercial ones that do (affordable ...
9
votes
3answers
634 views
Intensity/Bubble Map
So I have been tasked to create a visual map of case volume shipped to each region from each of our warehouses. I think the most effective way to visualize this data is to create an intensity (bubble) ...
