The representation of data in a viewable medium or format

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1
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0answers
25 views

How to clearly display a huge shapefile with many point features?

I have two vector shapefiles, each with 54,000 features. When it's zoomed in on a small region, I can clearly see the feature colors: but as I zoom out, this is what I get: Any suggestions on ...
4
votes
2answers
45 views

Visualization of a field in Leaflet

In a Leaflet app I want to overlay raster data (technically speaking, a field) on a web map. The data consists of triples < lat,lon,value >, where value is in range [0,1], for example: ...
0
votes
0answers
18 views

Tools to generate all the possible geometries meeting specific constraints

I have an area = 2d polygon (generally a 4-side shape). I would like to generate all the possible rectangles matching the following constraints: that fall within the surface of the area with a ...
3
votes
1answer
457 views

Visualization libraries for rendering 3D GIS world on iOS/Android

Are there any good 3D libraries/frameworks for rendering 3D worlds in geospatial coordinates on mobile platforms? Use case: I have some known 3D geospatial features (eg. buildings) with their ...
26
votes
11answers
12k views

How would I draw and visualize custom maps based on OSM data?

I would like to be able to use openstreetmap data for a specific region as a source and "draw" from that the map of infrastructure improvements - mostly roads. I want it to be self-hosted (not ...
1
vote
1answer
372 views

Flow mapping visualization using a road layer

I am trying to illustrate travel using a flow map on a road layer. My data is: city of origin destination number of travelers I would like to use a polygon city layer (or point) and a road layer, ...
0
votes
1answer
86 views

Why can't I load more than 12 elevation files into NVIZ?

I have a large set of rasters in a GRASS mapset, which I would like to use as frames in an animation, visualizing the raster data as elevation. NVIZ is an obvious tool for this, but I'm having trouble ...
1
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0answers
44 views

What kind of methods are most commonly used to interpolate a relief?

I have got a topographic plan with height measurements which I converted to point shape file with height value in attributes. I was wondering, what kind of methods are most commonly used to ...
2
votes
0answers
226 views

Developing maps using Tile Mill and Processing(.org)?

I had a small question. I actually would like to build an application which is very similar to this but as a map and not on “Multi touch Table Top”. The functionality I need is Plot different ...
1
vote
0answers
17 views

Tutorial on creating geospatial visualizations with Processing(.org)?

Recently, I've seen examples, (lots of examples ) which use Processing(.org) for creating network visualizations. So far though, I have not been able to find any good tutorials on it. I was wondering ...
12
votes
4answers
2k views

Processing(.org) for geospatial visualization?

Does anyone know if Processing is being used for geospatial visualization? I can't find much out there, but this is impressive: http://benfry.com/zipdecode/ Here's one I just found: ...
0
votes
1answer
38 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 ...
5
votes
3answers
758 views

How to drape a simple jpeg image over dem of some area?

How can we drape a simple jpeg image which doesnot have any geo referencing information over the digital elevation model in order to visualize it in 3D in QGIS?
2
votes
1answer
50 views

How to make a 3d visualisation of different peat layer to show the height of each layer?

I have bore hole point data that has about 5 to 7 types of peat layer and also has several depths. I also have digital elevation data of the area. I need to interpolate these layers separately, then ...
15
votes
6answers
1k views

What are some 3D visualisation tools that successfully work with GIS data?

There are a large number of 3d modelling tools available (both open and closed source). I would like to be able to: Import GIS data into a 3d environment and retain georeferenceing. Retain the ...
0
votes
0answers
9 views

Why did my Visualization tools disappear from the CartoDB Sidebar?

I was working with the "Intensity" visualization tool yesterday. Using the same data, I created a new map, and now I can only access: Simple, Choropleth, Category, and Bubble. Where did Intensity, ...
13
votes
6answers
3k views

Visualizing large datasets with Leaflet

When using Leaflet to visualize a large dataset (GeoJSON with 10,000 point features), not surprisingly the browser crashes or hangs. A sub-sample of 1000 features from the same dataset works ...
1
vote
1answer
99 views

What is the best way to display point data (with standard deviation) using QGIS/SAGA/Manifold? [closed]

I would like to display point data values (indicating biomass at a point) but also to show the standard deviation value for each point. What would be the best method to do this in QGIS (I'm a basic ...
0
votes
1answer
28 views

Link to an individual info window in CartoDB?

I'm a new user, so thanks for your patience and assistance. I just published a very large parcel dataset on CartoDB. Another website would like to link their parcel dataset to ours. Meaning, if you ...
2
votes
1answer
73 views

Las 1.2 format displays extremely long thin line of points

I am having difficulty properly visualizing aerial LIDAR data from the following source: http://csc.noaa.gov/htdata/lidar1_z/geoid12a/data/1124/ Taking any of the laz files, the point cloud displays ...
8
votes
4answers
1k views

How to view LiDAR data from a web browser?

I am looking to host lidar data on my own server and give clients the ability to view that data through a web browser as a 3D point cloud (file would be in .las format or equivalent), possibly with ...
12
votes
6answers
843 views

What is the best way to visualize multiple large LIDAR tiles?

I want to load approximately 10 large LIDAR tiles for analysis. I have tried using ArcScene but it appears there is a limit on how much data ArcScene can handle at one time. Each tile is 65-90MB in ...
20
votes
3answers
5k views

Simple thematic mapping of shapefile using Python?

I wish to visualize geographical data in Python, without using ArcGIS/ArcPy, and make a map. On the internet I found how to make a thematic map using Python: Here is some code that I tried: ...
6
votes
2answers
1k views

Building cartograms using Web GIS?

I would like to build a cartogram map using Web GIS. I have a basemap and a set of raw data in excel. I wondered what are the steps to build up a cartogram map using Web GIS? Note: Originally ...
0
votes
0answers
691 views

Plot poly-lines between few points in D3+Polymaps

I would like to create polyline on the click of the mouse. I have 4 circles 3 with radius 2 (Lets name it as B,C,D) and 1 with radius 8 (Lets name it as A). Now when I click on the circle A, poly line ...
1
vote
1answer
68 views

generic “There is a problem with your connection” error in CartoDB

I changed the cartoCSS for a visualization, but in a pretty straightforward way (fyi: changed some numerical cutoffs to other numbers, did not touch anything else). I am getting a "There is a problem ...
16
votes
4answers
711 views

How to implement ringmaps in ArcGIS?

In a recent article by Stewart and colleagues in IJHG I stumbled upon interesting technique of visualizing data using ringmpas. Some more information referenced in the article about this technique ...
34
votes
16answers
3k views

Is there any experience using Computer Games to display GIS data?

besides being a GIS use I'm a big computer game fan. Games like Civilization, Minecraft, World at War and many others have a very powerfull engine to display huge maps in a beutifull way. I was ...
3
votes
3answers
253 views

Black/white hatching pattern fills in QGis

I am looking to replicate black & white maps in QGis, using hatching patterns and greyscales to indicate different categories of a continuous variable (example below). It is ...
1
vote
0answers
54 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
2answers
2k views

How to visualize grd files in Quantum GIS?

How to visualize grd files in the software Quantum GIS?
1
vote
1answer
50 views

Unable to show tiff “parameters”

Why this raster (tiff) does not have any values? Why I am unable to perform: doubleclick -> onechannel pseudocolor -> clafify Both rasters are downloaded from the same site: ...
0
votes
2answers
161 views

Unable to make infowindow work in CartoDB runtime layer

I'm trying to personalize a layer created with CartoDB. The layer is created at runtime and the problem is that I cannot make work even easy things like custom infowindow or legends or click ...
1
vote
1answer
146 views

Visualise data belonging to an area

I am looking for a way in QGIS (1.8.0) to visualise data, which is related to an area (polygon on a shape file). There are no x-y-coordinates with the data, just the info of the belonging area, means ...
10
votes
4answers
602 views

Looking for a free program for 3D visualization

Looking for a free program or web software for 3D visualization. I'd like to have an ArcScene like abilities. No editing needed, just need to see the data in a 3D format. It'd be really helpful for ...
2
votes
2answers
120 views

Is there any systematic way to pick two colors for a chloropleth showing a candidate's margin of victory

I have a simple 2-color map showing which candidates won in which precinct. Now I want to make one showing margin of victory within a precinct. So if candidate A won by a lot it would be dark green, ...
0
votes
2answers
415 views

How to plot geoJSON using Python?

I have huge geojson file that I am working on: [{ "geometry": { "type": "MultiPolygon", "coordinates": [ [ [ ...
0
votes
0answers
63 views

Resources for mapping and displaying spatial data in R

I'd like this to be a repository for all resources available specifically for mapping and displaying spatial data in R. I've seen (and contributed) to this post, but would like this post to focus ...
0
votes
0answers
16 views

Visualization of poin.shp in QGIS 2.0 with manually selected min max values

I would like to visualize a poin.shp file in QGIS 2.0 with manually selected min max boundaries. The data consists of many different points lined up as a line. The aim is to visualize the different ...
1
vote
1answer
55 views

How to create a value-by-alpha map in Java?

Someone has post similar question as mine before : similar question But my objective is slightly different. I have a shape file (.shp) (a country map) I would like to write a piece of java code to ...
0
votes
1answer
53 views

Does CartoDB support Retina screens?

We are using CartoDB as our production mapping solution. Just wondering does it offers support for Retina screens and if so how hard can be to toggle on?
0
votes
1answer
61 views

Export ArcGis Time Visualization

How come when I try and export my time series in ArcMap it compresses the video to 3 seconds? My time change visualization is at least 10. What can I do to make my exported video longer?
2
votes
2answers
189 views

How to increase resolution of 3D image in GRASS NVIZ

I am trying to make 3D visualization of terrain data and orthophoto using GRASS NVIZ via QGIS. I have been able to import both the DTM and the orthophoto in NVIZ window and successfully draped the ...
0
votes
0answers
38 views

Custom infowindow exception in CartoDB

I'm building a runtime layer and til a couple of days ago my code was working. Since today it started giving me an exception that is causing subsequent code not to work. Uncaught ReferenceError: ...
0
votes
1answer
290 views

How to use cartodb.js with API key for privacy of data

I would like to use cartodb.js in my web page reproduce a visualization that I created at CartoDB. But I want to keep private my visualization and data at CartoDB (and I am going to secure my web ...
0
votes
1answer
143 views

CartoDB create layer at runtime

I'm almost totally new to CartoDB. I've been looking around and read the api reference, but there seems not to be what I'm looking for. What I want to do is to "Create visualizations at runtime". ...
2
votes
1answer
874 views

What is the best way to visualize subsurface drillhole and borehole geology data within ArcGIS?

I've heard some folks in mining are using Target for ArcGIS extension by Geosoft to visualize and analyze subsurface drillhole and borehole geology data within ArcGIS. Does anyone have experience ...
1
vote
0answers
87 views

How to represent the time(weekly/monthly) variationof a polygon map using one image?

I have a base map made up of three hundred polygons, each polygon get lots attribute values(For example, each week/month get a value). But I want to draw only one picture(due to page limitation) to ...
1
vote
2answers
99 views

Interactive Exports from GIS

I'm looking for suggestions of interactive exports from GIS software. The need for this research is that many of our customers either do not have access to GIS or the knowledge to use it. One method ...
17
votes
8answers
759 views

Examples of building-level geovisualization

I have recently stumbled upon a presentation and paper by Duncan Smith exploring geovisualization of 2001 area classification of output areas using building level resolution of urban area (London in ...