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1
vote
0answers
20 views

How to Predict demand on a bus route, considering variaton in kms and price?

If there is a route (line) modification, I mean change on distance; and also a change on the price for the user. How can I calculate the demand on the next year, considering seasonnality. What would ...
5
votes
1answer
74 views

Spatial+Temporal database request for 4D intersection

Here is the function I need to implement. My application deals with mobile objects with variable position and range (think of radar range). As I can't test each minute if n mobiles detect each other ...
1
vote
0answers
23 views

Weekly raster data for temperature and precipitation in US

I am looking for weekly raster data for US for temperature and precipitation. All the major datasets PRISM, WorldClim etc. are either on a monthly scale or daily scale. I was wondering if anyone has ...
0
votes
1answer
66 views

How to filter date values using OGR 1.11.0?

With OGR 1.10.1 this works: ogrinfo test2.shp -sql 'SELECT COUNT(*) FROM test2 WHERE DATE < "1970-01-01"' Note that DATE is a column of type date (not string). (Here's test data if you want to ...
0
votes
0answers
70 views

how to compare multiple time series of raster files [on hold]

I am looking for the best way to compare the spatial patterns of multiple time series composed of many raster files, in R. The cell values of each raster is continuous, and I am comparing time series ...
3
votes
2answers
67 views

Prediction Population

I want to build a continuous data set with the population for 1970, 1981, 1991, 2001, 2011. I already have the population values for the same polygon, at sub-sections level (the lowest), for 1991, ...
7
votes
1answer
300 views

online map of 242,888 locations: which service to use? (what if temporal heat map?)

I have a 161.8 MB large CSV file with geocoded locations (with latitude and longitude) for 242,888 lines. I want to have an embeddable online map of all this. I wonder which service could deal with ...
3
votes
1answer
61 views

How to calculate “stop points” from a set of GPS tracklogs?

I have a set of GPS tracks pertaining to a cycling event that happened in the same day. I don't have much geographical information about the event itself, except for the tracklogs I downloaded from a ...
1
vote
1answer
61 views

NetCDF file size calculation

I'm planning to use the NetCDF file format for storing my time-series observation data on a server. I would like to use the "NetCDF-CF" conventions. Before I start writing any scripts for importing ...
2
votes
1answer
242 views

I need some more information on ASTER for time series analysis

See my previous post on ASTER I have a question about that I am not sure about. So, if I wanted to analyze 10 years or so, do I need to download each ASTER file for each year (e.g. 2003 ASTER, 2004 ...
1
vote
0answers
224 views

QGIS Points to Path Plugin Date/time error [closed]

I would like to use the Points to Paths plugin to plot the tracks of collared animals, exactly as specified on this page http://spatialgalaxy.net/2011/12/30/qgis-plugin-of-the-week-points-to-paths/ ...
1
vote
0answers
49 views

Indexing GIS data associated with user with timestamp

I have data for each user in this format user1:(timestamp,lattitude,longitude) user1:(timestamp1,lattitude1,longitude1)..... Here the 1 at the end of timestamp/lat/long is to specify a different ...
1
vote
1answer
307 views

How to Publish a Time Aware Mosaic dataset as an ImageService with Temporal component?

I have a Time Aware Mosaic dataset , which contains 5 rasters. I have entered the dates for the given rasters, by adding a Text Field with the dates. (The dates of the images are from 3/1/2013 to ...
8
votes
1answer
260 views

(How) do the modifiable areal unit problem and modifiable temporal unit problem interact?

I am reconstructing historical time series of land use and other related data from a variety of sources with different spatial and temporal resolutions and would be interested in what possible ...
3
votes
1answer
322 views

Using PostGIS for a large trajectory dataset

I have a spatial trajectory dataset which basically contains about 10E6 (lat,lon,time)-tuples, grouped together by an identifier so they form trajectories. Currently, SQLite is used to store the raw ...
1
vote
0answers
177 views

Time Slider and data driven pages

I have parcel polygon data from 1900 to 2000. Using the Time Slider tool I can animate the parcel map. I would like to parcel attribute information like grantor name as the map is populated over ...
2
votes
1answer
345 views

Temporal coverages dynamically reloaded from data store in GeoServer

I'm pretty new to GeoServer. I would like to serve results of a simulation that concerns geospatial data as a Web Coverage Service (it has to be OGC compliant). The individual steps of the simulation ...
43
votes
3answers
11k views

Openlayers Animation Examples and Algorithms

i wonder for a long time if people in this community uses openlayers for animation needs. we have know this that animating on browser is a little bit exhausting for it but when a map meets with ...
4
votes
2answers
1k views

How to create an animated map?

I am seeking to create an animated map illustrating the simultaneous movement of different objects across a large area over time. The display should be capable of playing automatically, or by ...
4
votes
3answers
744 views

How to create network simulation / temporal models for videos?

I know of ArcGIS Tracking analyst and QGIS Time Manager. I have a transportation network with time based schedule for buses. I will create time aware shapefiles from this data. Is it possible to ...
7
votes
2answers
999 views

How to animate raster time series using open-source GIS?

I have a bunch of rasters taken about 10 minutes apart, and I have a nice QGIS project that produces pretty enough maps of them. I'm wondering if there's a way to animate this raster series, with a ...
1
vote
1answer
239 views

Does a graphic or graphicsLayer support time-awareness?

In the ArcGIS Server JavaScript API 2.6 I'm looking to implement map graphics. I can't see whether they support time-awareness. The help entry for graphicsLayer doesn't mention timeInfo, which is ...
1
vote
1answer
2k views

Time Slider in ArcMap 10 and Time Format Issues

I have an .xls file that contains Lat/Longs as well as a time stamp in this format: hh:mm:ss AM/PM When I create a feature class shapefile out of this .xls file, ArcMap reads it in and displays it ...
6
votes
1answer
210 views

Predict user's future location - location awareness mobile computing

This question is a part of an online course (Mobility Data Management) that I am currently auditing. A part of the project is to implement a system that can predict user's future location. This kind ...
3
votes
2answers
2k views

How to create an animation from raster data?

I have some NDVI and precipitation/temperature images at the monthly time step from Jan, 2005 to Dec, 2008. I need to create animation image to show the temporal change. How can I do this. Is it ...
8
votes
3answers
764 views

Temporal Analysis Tool: Seeking

I am looking for an alternative tool (proprietary or FOSS) that matches the functionality of Temporal Analyst for ArcGIS by DHI Software. The best I could get was the QGIS plugin Time Manager ...
10
votes
2answers
252 views

Which weather on my road? Looking for a spatial weather forecast web service

My friend Bob goes from A to B leaving tomorrow morning at 6:00. There are many direction services that indicates him short, fast and/or cheap routes. Bob does not like to drive under the rain and ...
9
votes
2answers
929 views

How to design a Spatial Database for temporal Data?

I am working on a Weather based GIS App. I have the data from several weather stations, and this data will updated daily (by a web service). The obstacles I am facing are: There are currently 40 ...
16
votes
4answers
599 views

How to handle TIME in GIS?

Is there any way or any idea on how to handle Time attribute in GIS? For example, which are the ways to specify that an object is at a place at a given time interval and them it is in another place ...
47
votes
11answers
3k views

Best practices for visualizing speed

Imagine you're tracking, for example, vehicle or animal movement and receive regular GPS position updates. How would you visualize speed of movement on a static (= printable) map? I've been coloring ...
30
votes
9answers
2k views

What is the best practice for visualisation of a spatio-temporal data set?

I'm investigating visualisation of a spatio-temporal data-set. What examples are available, online or offline, of high-quality spatio-temporal data visualisation?