A nonspatial continuum in which events occur in apparently irreversible succession from the past through the present to the future

learn more… | top users | synonyms

1
vote
3answers
738 views

Why does ArcGIS 10 Convert Time Field geoprocessing tool return <null> when using custom format?

I have dates in my attribute table that are stored as strings - they look like 02/22/2012 (mm/dd/yyyy) - and I would like to convert them to Date type. When I try to input a custom date format in the ...
1
vote
1answer
220 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 ...
5
votes
1answer
931 views

How to use QGIS Time Manager sample data?

I've downloaded the Time Manager plugin for QGIS for Windows, version 1.7.1. I'm not sure whether I should really be asking a question on here, but since there doesn't seem to be an issue tracker on ...
1
vote
1answer
403 views

How can I add the frequency (count) of a point shape file on an animated map?

The problem is this: I have a crime (point) data on a map which is animated via time slider using a 1-week-period. I see all the points I added without a problem, I also added a dynamic text ...
3
votes
1answer
663 views

How to handle time-based raster data in the ArcGIS Server JS API

The TimeSlider functionality in the ArcGIS Server JS API is great for working with time-based vector features - you can scroll forwards and backwards through time to see the vector features which ...
9
votes
2answers
1k views

Speeding up my Python calculated field

I am new to Python and have started to create scripts for ArcGIS workflows. I am wondering how I can speed up my code to generate an "Hours" double numeric field from a timestamp field. I start with ...
6
votes
1answer
483 views

Drive time analysis using Network Analyst with ArcInfo 9.1

What is the most common SETTING for the Layer Properties when creating time-travel polygons? I am in the process of creating 4, 5, 6 minute polygons using Network Analyst. Every time I generate ...
3
votes
2answers
101 views

Obtaining OS MasterMap time series data

I am trying to do a research project on changes in Land Cover in a London borough over time. I have access to OS MasterMap data through Digimap (the service that provides this data to universities in ...
5
votes
2answers
411 views

Visualizing and organizing traffic flow data for an intersection

I'm looking for advice on how to organize data that describes traffic flows through several unconnected intersections over several years. I'd like to learn about the most basic representation of this ...
3
votes
1answer
655 views

Help with joining a large dbf file to shape file

My overall objective is to create a timeline animation depicting when a person is working in a particular region. The .dbf table consists of over 6000 record entries of shift data, including date ...
3
votes
2answers
520 views

Enabling time aware layers using arcpy

Is it possible to enable time aware on a layer programmatically? I can add a time-enabled layer to a non-time aware data frame as shown here: ...
16
votes
4answers
554 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 ...
10
votes
2answers
1k views

Interpolation for timeseries in ArcGIS

I'm trying to calculate average rainfall value from a number of points using Inverse Weighted Distance tool in ArcGIS 9.3. My problem is that: each point has it own time series, therefore the ...
10
votes
5answers
3k views

Which tools and methods can be used to create isochrones?

I'd like to get an idea for what's involved in creating isochrones for a series of sites, with a reasonable degree of accuracy to the estimates. A general outline would be great, though my scenario ...
29
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?