A visual representation of an area-a symbolic depiction highlighting relationships between elements of that space such as objects, regions, and themes

learn more… | top users | synonyms

4
votes
1answer
94 views

Digitizing contour lines from paper maps using QGIS?

Is it possible to give digitized altitude lines (from paper map) heights using QGIS?
2
votes
2answers
43 views

Is there a county-level maps dataset that includes independent cities in virginia?

and thank you in advance for your help. The following code shows the dataset I am working with: library(maps) CountyMapData <- map_data("county") head(CountyMapData) long lat group ...
1
vote
1answer
37 views

Cant get infoWindow to show in CartoDB dynamic layer

Heres my very simple code. <title>Leaflet multilayer example | CartoDB.js</title> <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> <meta ...
2
votes
1answer
51 views

OpenLayers3 Navigation control

I want to navigate the map using mouse drag. we did it in openlayers2 using navigator control. Does Openlayers 3 have navigation control? should I add it to map like Openlayers 2?
1
vote
2answers
84 views

How to build a map that highlights only one state?

I'm a journalist working on maps of several Alaska databases. I'm learning as I go and have a question that's probably very basic, but very important for my projects: Using CartoDB, how can I create ...
0
votes
0answers
7 views

Customized use cases of ushahidi

I have always heard of ushahidi as a platform for crowdsourcing incidents, monitoring an event.. All of use cases are related to events or similar. For those who tried it, I would like to know if it ...
1
vote
1answer
16 views

Creating an online form with intergrated google maps

Not sure if anyone can help, but i am looking at creating an online form that includes a map (google or something similar) where the user can draw a poly and when the user hits submit, i get all the ...
5
votes
3answers
465 views

How to know if a point is inside a rectangle on the map?

I have four points that represent a rectangle (a,b,c,d). I got these points from mobile GPS. In my database I have this table of business locations: bussId | longitude | latitude ...
1
vote
1answer
37 views

Cost of usage for various providers [closed]

I want to use maping services in my website and I am confused about the options that are provided. I try to do a comparision between features, accuracy and most important cost. I am total newbie and ...
1
vote
1answer
35 views

Google Maps, here maps data in one database

I want to create a database from here and Google Maps to combine with my data. Then I create an application that can use this database. Basically I want to host the server with Google and here map ...
3
votes
2answers
269 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 ...
1
vote
0answers
31 views

OpenLayers Multiple Maps Problem (maps leave blank)

I try a round with OpenLayers and was very impressed how mighty it is. But I have a problem (maybe a easy one, because I am not so trained in js). After adding additional maps all maps leave blank, ...
0
votes
0answers
67 views

Placing Pins and following transformation on zoom map d3

So I am using this http:// bl.ocks. org/mbostock/4699541 framework on D3.js and I just figured out how to append circles to the map. However when you click on a state the circle moves out of place ...
0
votes
0answers
57 views

No Load kml in Openlayers MVC ASP.NET

I have a problem to load a kml map using OpenLayers. I used this in this example: http://www.openlayers.org/dev/examples/sundials.html I put the following script to load the kml var wms = new ...
0
votes
1answer
102 views

Draw arc in Geo map WGS84 coordinate system

im trying to draw an arc in OpenLayers, in non Geo map it works well and here is my code: function calculateArcPointsNonGeo(center, radius,startAngle,endAngle,segments) { var pointList = ...
1
vote
0answers
65 views

Python error message after download (QGIS 1.8.0/ Windows 7)

Hello to all members of the forum, I downloaded from the OSM website a small area in the neighborhood of Strasbourg, France: X (longitude): 7.6808 7.8216 Y (latitude): 48.5075 48.52 I got the two ...
0
votes
0answers
18 views

QGIS Google satellite layer moving each time it's turned on [duplicate]

I have imported location data in a text layer, CRS = WGS84 and have put in Google Satellite and Google Street (WGS84/pseudo mercator) in but each time I switch on a Google layer it moves relative to ...
2
votes
1answer
128 views

plotting a map of north greenland in R

My knowledge in GIS and R is again tested when I want to map a small part of northern Greenland (called Washington Land) in R (and plot analysis data on top later). I've managed to plot it with ...
1
vote
2answers
114 views

render geotiff tiles as a map layer

i have the following problem: i have downloaded tiff files with gMapMaker and transformed them to GeoTiff using the associated .map files in QGIS. now i want to render these GeoTiff files to use them ...
0
votes
0answers
113 views

Plotting a Route on Google Maps using a string passed to a function as a parameter

I'm trying to plot a route, using Google Maps. I need to be able to pass a string to the function, to build the Polyline. I can do the following and it works fine: var flightPlanCoordinates = [ ...
2
votes
0answers
171 views

Convert Google Street View urls from OLD to NEW

My website accepts google street view links as submissions. Google has updated the url format some months ago. Does anybody know how the old format is converted into the new format (and vice versa)? ...
0
votes
0answers
14 views

Plotting two shapefiles using R? [duplicate]

I'm not familiar with using R for GIS. I was wondering if you can help me figure out how to plot different shapefiles at the same time. I'm using the "map" function to generate a map in order to get ...
0
votes
0answers
13 views

Is there any catalogue of Canadas MCR map series?

Browsing through the University of Toronto Map Library, I discovered a number of officially produced maps that I was not aware of, such as: A national Canadian series in six huge sheets at ...
0
votes
0answers
30 views

OpenLayer Maps not zooming

Initially the map zoom is set to 8, and that's the only place in the code i can change the zoom, any other location doesn't work. I have a function that draws a marker and a route on the map (works ...
0
votes
0answers
33 views

feature position on non-Geo-referenced Image

I use OpenLayers to show Map , when im creating the map, i want to show map image with an ImageLayer and VectorLayers, the image is non Geo-referenced. The use case: i receiving a map image url from ...
2
votes
2answers
75 views

What USGS maps exist in the 7.5' × 15' metric 1:25,000 series?

While browsing through the library, I discovered that USGS has, in fact, produced some metric maps at 1:25,000. One example is Thendara (NY), 43075-F1-TM-025. As far as I can tell, those maps are ...
3
votes
1answer
62 views

Coloring of features in ArcMap 10.1 changes randomly while zooming

I am using the sovereign states shapefile (ne_110m_admin_0_countries.zip) from http://www.naturalearthdata.com/ and joined the attributes with a spreadsheet file that codes many (but not all) country ...
7
votes
2answers
69 views

Resources for Learning 508 Compliance/Accessibility Requirements for GIS Figures

Does anyone know of any quality resources (books, papers, presentations, websites) for learning about 508 Compliance/Accessibility requirements in relation to cartography (GIS figures and templates)? ...
-5
votes
2answers
66 views

Where can i get Shape Files for AE - U.S. Armed Forces – Europe AP - U.S. Armed Forces – Pacific PR - Puerto Rico? [closed]

I need shape files for these : AE - U.S. Armed Forces – Europe AP - U.S. Armed Forces – Pacific PR - Puerto Rico Where can i find them ?
0
votes
1answer
47 views

linked maps not working in R

I am trying use the micromap package in R, but something is not working. This is the code: library(micromap) library(rgdal) library(ggplot2) setwd ('C:/Users/Jesus/Dropbox/linked maps/Chapter4') ...
1
vote
1answer
25 views

The red box that refers to other dataframes will only show part of the box (only show over land but not water, see image)

the red box refers to other dataframes but it's only showing over land and not over the ocea, ie, the box is an incomplete square
1
vote
2answers
2k views

Openlayer maps issue with ssl

I am using openlayers map by using the hosted js : <script src="http://openlayers.org/api/2.13.1/OpenLayers.js"></script> But my client has ssl installed and when i try to run my map ...
4
votes
1answer
199 views

Adding Multiple Maps in QGIS Composer?

I am working with QGIS Composer 2.0 and I would like to add a second map. What I would like to do is to have a main map that takes up the majority of the print area. This map, Main Map, will have ...
1
vote
0answers
55 views

Whats wrong with my code? Any reference missing?

I have been trying to add the navigation tool that will simply zoom in and zoom out. Push left and right using the click of the mouse. I'm using in the Silverlight, Visual Studio 2010. The XAML ...
1
vote
0answers
123 views

Mapping Kansas City based on X and Y Coordinates in R

I have a csv file in R that has coordinates of Kansas City, however, the values at these points aren't in any traditional longitude/latitude formatting that I am aware of. My data looks like this: ...
1
vote
0answers
513 views

Postcode Boundaries : India

I was wondering if there are shape-files for postcode regions in India. I did find some shape-files that give the outline of the administrative units in the country but not with postcodes. Right now ...
1
vote
0answers
299 views

How to make two raster correlation coefficient map?

The pictures showed correlation analysis of NDVI and precipitation or temperature. How can I made these pictures in ArcGIS?Or use other ways?The different colors represent different correlation ...
1
vote
1answer
71 views

Creating new highway mapping data? Help!

I'm hoping somebody may be able to help or at least point me in the right direction, with a GIS/Mapping query that is a little unusual. I have been tasked at work with looking at how we create a ...
3
votes
0answers
271 views

R with ggplot2/ggmap - How to load a png image as a map

I am trying to find a workaround for ggmap's missing support of world maps (i.e. you can't create any maps that show latitudes > 80°, due to idiosyncrasies in the mapproj package). To a limited extend ...
9
votes
1answer
111 views

Is there a name for a situation when the place is clearly or unclearly named?

This is not specific to any system. Suppose there's a large red rock on a terrain which can be easily found and clearly seen and there's an artificial object such as a mall near that large red rock. ...
2
votes
1answer
297 views

Android Application with offline maps

I need a library/framework that i can use to store a custom map(as tiles) locally on android and show it as a map . I would like to get a real-time position of an object(Point data - it's within a ...
1
vote
0answers
55 views

Finding list of bus stops and what is next

First of all apilogies if this is already discussed. I am a low vision person and there is only so much time I can spend searching for information as it is stressful on the eyes. I spent considerable ...
1
vote
0answers
67 views

Looking for maps with high complexity

For an presentation I need an example of a map which contains very much information. The map should : respect basic cartographic principles. contain as much quantitive and/or qualitive information ...
5
votes
6answers
23k views

How to change default zoom in the Google embedded map?

I am having difficulties to change the default zoom level when I open the iframe below in my site. Can anyone please help me to set zoom level when following iframe is opened? <iframe ...
0
votes
2answers
3k views

Download Google Map tiles, images [closed]

I would like to use the google maps downloader to save satellite images from google maps (http://www.allallsoft.com/gmd/index.html), but is it legal to use? In the terms of service you can read that: ...
4
votes
2answers
577 views

LeafletJS: Load Tile Layer based on bounding box

I have a LeafletJS map application with lots of layers. I have a few layers that only have imagery for certain regions across the world. Because everything goes on a world base map. All tile caches ...
1
vote
1answer
363 views

google maps tiling scheme index grid

I have a need to cut tiles from a raster with bounds that result in no partially filled tiles at a particular zoom level (no transparency or black/white areas). First thought was to overlay an index ...
1
vote
1answer
269 views

GIS - Coordinates / Projections, Google Maps

I'm currently working with OS data and have just tried to import a table of google maps coordinates/point data into ARC. The data frame (& layer) coordinate system is as follows: ...
1
vote
0answers
38 views

Can I use the PyQgis QgisPluginLayer to create heatmaps?

I am working in an application to generate maps from a bunch of MIF/MID files, I already created almost all the maps that I need, but, now I want to create heatmaps. I can't find any way of creating ...
1
vote
1answer
880 views

Texture overlay in d3 map

D3 map can be drawn and colored as shown in this example : http://techslides.com/demos/d3/d3-world-map-zoom-points.html. I need to overlay a texture or image within the boundary of a given country. Is ...