The study and practice of making maps.

learn more… | top users | synonyms (1)

4
votes
0answers
146 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 ...
3
votes
0answers
120 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
votes
0answers
212 views

How to do bivariate or multicriteria line symbolization in QGIS?

Bonjour, je cherche à faire sur Qgis un tracé d'un itinéraire avec comme légende une couleur pour le type de route et la largeur du trait pour la fréquentation de cette route. J'ai vu qu'il était ...
3
votes
0answers
1k views

Converting projected coordinates to google maps pixels

I have a single polygon in a local projection system. I would like to convert that polygon into an image that can be used as an overlay on google maps. I understand that it may be better to use ...
3
votes
0answers
203 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
votes
0answers
52 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
votes
0answers
115 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 ...
2
votes
0answers
36 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 ...
2
votes
0answers
102 views

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

why is my map is not in the center when I load my map in OpenLayers?And when I drag my map,it dont move sometimes,It has been tortured me for a long time,any advice would be grateful! var maxExtent = ...
2
votes
0answers
193 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
votes
0answers
47 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
votes
0answers
131 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
votes
0answers
334 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 ...
2
votes
0answers
164 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
votes
0answers
234 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
votes
0answers
3k views

Source for ArcGIS Layout Templates?

I am running v10 of ArcGIS for Desktop. I am aware of the OTB templates provided with ArcGIS. - However, I would like to supplement these layouts with additional layouts. I am also aware of the Map ...
2
votes
0answers
483 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
0answers
14 views

Map of India in R with Different Values of Five Indicators for Every State of India

I want to generate a map of India in R. I have five indicators with different values of every state. I want to plot bubbles with five different colors, and their size should represent their intensity ...
1
vote
0answers
17 views

How do you change the map units returned on ArcGISRuntime 10.2.4 for .NET

I am working on a project that requires the frequent usage of feet as the expected unit of input and output. We're using the .NET SDK with the Esri.ArcGISRuntime.Controls.Mapview in WPF. Basically we ...
1
vote
0answers
30 views

How to create 3D globe images highlighting a specific country or 2D country map with capital?

I am building an Anki flashcard set that should contain country flags, names and (ideally) a 3D globe with the country outlined, as can be seen on Wikipedia. I've already completed the part that ...
1
vote
0answers
38 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
19 views

How does GeoServer render a Super or MegaTile

I'm working on chopping up a big mega map tile into smaller tiles at various zoom level. I'm surrounded with a problem first up in terms of how to get my big mega map tile with all the legends (with ...
1
vote
0answers
51 views

CartoDB: cluster circles aren't proportional

I'm trying to visualize thousands of records on a map on CartoDB using the cluster feature but circles with 100 or 1000+ records have the same dimensions. I'd like to have more discrimination in ...
1
vote
0answers
43 views

How to add vector KML data in an excel table

How do I take a KML (or XML) vector map saved on my desktop showing for example a election ward and then import it into excel as a data input in a field of data. I have information in excel for ...
1
vote
0answers
46 views

create a weight raster for a hydrology analysis

I determine affecting parameters of flood flow ( evaporation,vegetation,soil type, rainfall etc.). Then, I start to analysis using Arc Hydro. How do I relate among of affecting parameters? How can ...
1
vote
0answers
229 views

QGIS 2.4.0-Chugiak: How to threshold NDVI to calculate emissivity for land surface temperature

I am analysing urban heat island using thermal band 6 of landsat TM-5 sensor with respect to Normalized difference vegetation index that derived from the Band 3(Red) and Band 4(NIR). Lansat TM years ...
1
vote
0answers
51 views

Appropriate reference system for small-scale mapping of the Middle East

I want to create a thematic map of the Middle East that displays certain historic places and regions on a small-scale map (between 1:6.000.0000 and 1:12.000.000). The map has to center the boundary ...
1
vote
0answers
81 views

Trying to make a depth map of a lake but can't get the contours to show up right

I am trying to make a depth map of a lake. I am using the contour plugin to generate contour lines. The problem I am having is that when I use the plugin the contours come out right except on the ...
1
vote
0answers
129 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 ...
1
vote
0answers
102 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 ...
1
vote
0answers
111 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
0answers
75 views

How to import a map consisting of pictures

I want to built some sort of Fantasy Map with Quantum GIS. The whole map is built out of 128x128 single pictures, 16384 in total. It should be a flat map. How do I import these pictures and align ...
1
vote
0answers
51 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
0answers
129 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 ...
1
vote
0answers
124 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({ ...
1
vote
0answers
20 views

Is there an easy-to-install website plugin for territory routing?

For an application I'm creating, I want to be able to place dots on a map in locations that my users will be visiting. Each user will have his own locations he has to visit, so I'd like to 'connect ...
1
vote
0answers
11 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 ...
1
vote
0answers
74 views

Which bins should be used for demographic data for a choropleth map?

I'm currently working on a project which produces a choropleth map similar to a map like this: http://dl.dropboxusercontent.com/u/54512470/Telefondaten_VIZ/index.html That map has 2x5 classifications ...
1
vote
0answers
60 views

My fusion table map with search not working

My maps are not working. It shows the search box but not the map: // ]]></script> <script type="text/javascript">// <![CDATA[ var map; var layer_0; function initialize() { map = ...
1
vote
0answers
90 views

Creating Legends for QGIS 2.0 Feature Blend Mode Outputs

I am working on visualizing ~4100 buffered point features. The shading of the buffers is keyed to a field in the data. Because the buffers overlap, I turned on multiply in the new feature blend mode ...
1
vote
0answers
161 views

Ohio State Plane to Lat/Lon

I've looked into a few other posts/libraries as far as converting between State Plane (Easting/Northing) to get a Lat/Lon value, however I've run into some trouble. I saw here ...
1
vote
0answers
85 views

Learning classical geography - recommended literature et.c

I've been working in the field of GIS for a few years now, and there are some disciplines of knowledge where I lack a good degree of education. My educational background is that I've studied computer ...
1
vote
0answers
129 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 ...
1
vote
0answers
184 views

how can I set the StartBounds, units, and tileSize correctly in OpenLayers?

how can I set the StartBounds, units, and tileSize correctly in OpenLaters?I can not make sure this parameters,for I use jsonp,and it will dynamticly read layerinfo from esri rest resources. var ...
1
vote
0answers
118 views

Free cartographic texture resources

I've been trying without success to find free textures to use in TileMill. I'm looking for fairly simple, abstract textures, like a dotted pattern (to indicate national parks). Are there any well ...
1
vote
0answers
201 views

Changing Default Layer Switcher

How can I change layerswitcher properties(radio button) ? So I want to change just like drop down list ?
1
vote
0answers
31 views

Mapserver mapscript map inset

What is the recommended way to produce a map similar to the one in http://www.nexusenergy.com.au/6468050/nexus-energy-oil-gas-exploration-and-productio.htm I would like to dynamically create the ...
1
vote
0answers
93 views

Is it possible to use USGS .shd files in QGIS?

Has anyone successfully used QGIS with US Geological Survey shd files to map geology - specifically to display colors and geological symbols (dip/strike etc) stored in a USGS supplied shd file. ...
1
vote
0answers
117 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 ...
1
vote
0answers
189 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 ...