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

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2
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2answers
391 views

Calculate Slope Between Pixels Through Time: A Time Series Trend Analysis

I have a 9 year weekly time series (~500 raster grids of equal cell size and extent). I'm interested in obtaining the regression line slope between pixels (Imagine stacking all 500 grids on top of ...
2
votes
1answer
39 views

How can I get temperature data for each Countries?

I need maximum and minimum temperature data of each countries. I searched a lot but could not find the values. Could you give links if it is possible?
2
votes
1answer
89 views

Determining date or time Feature Class was created in File Geodatabase?

I had a script running at the office over the last 5 days and tried to remote on unsuccessfully since the 3rd day. I got here and it appears there was a power outage. Is there a way to find out the ...
2
votes
1answer
99 views

Populate field with current time

I am trying to populate a field with the current time. Here is what I tried that did not work: Start editing Open Attribute Table Add Field -> Name: time Type: Date Right Click on Field Name ...
2
votes
1answer
415 views

NDVI time series in R — how do I create a time series object from a data frame?

I am doing a time series analysis of NDVI using the bfast package in R. Bfast requires a time series (TS) object. I have successfully created a data frame with the NDVI at various point locations ...
2
votes
2answers
1k views

How to use DateDiff() Function across day transition in ArcGIS Field Calculator?

I am trying to calculate the time difference between two fields using the DateDiff() function in minutes. I have successfully calculated the times that fall within the same day but I am having trouble ...
2
votes
1answer
41 views

Question on how many ASTER per year ? per month?

How many scenes are there for ASTER per year ? From what I understand is that the temporal is every 16 days. So, some month it will have 2 and some months it will have one. Thanks.
2
votes
1answer
123 views

Relevant data for cost attribute to calculate route time

I have imported OSM data into PgRouting database. I would like to use driving_distance() function to calculate route time. How to add relevant time cost into database ? Thanks
2
votes
1answer
15 views

Looking for API providing accurate timezone data

I'm looking for an API providing accurate timezone data. Thus far managed to find earthtools api but daylight saving time info isn't very accurate. I need to lookup by latitude/longitude or as an ...
2
votes
1answer
602 views

Adding time dimension to layer in GeoServer

I have a GeoServer installation that is used as a proxy in front of a THREDDS Data Server to be able to add additional metadata to WMS layers (which I haven't found any support for in THREDDS). I ...
2
votes
0answers
27 views

I am working on layering GIS over time axile to visualize vehicle's movement in time [closed]

I am trying to combine time and latitude/longitude dimensions by layering calendar over map and essentially creating time-space map showing how vehicle moves in time and over the roads. Anybody have ...
2
votes
0answers
71 views

Modelbuilder - make service area layer

I made a model in the model builder (ArcGis) to make a service area layer (see figure). Now I want to run this tool for the same locations but for different hours. -> the results would be a feature ...
2
votes
0answers
56 views

ArcMap - Adding Multiple raster datasets to mosaic dataset (for temporal change)

I have a number of raster datasets containing lake water temperature data. I am looking to make these time enabled as to be able to scroll through them. I have converted them to .TIFF format and have ...
2
votes
0answers
76 views

QGIS 2.2 - spectral profile for multilayer/time series

I am missing a spectral profile in QGIS which enables me to see the values for all bands of a given pixel. (absolutely necessary for multispectral and multitemporal/time series work) It seems, there ...
2
votes
0answers
201 views

Create circles around a point on a map measuring the radius in hours

Disclaimer: I am not experienced in GIS and hope this question fits in this category. I was wondering whether it is somehow possible to create a circle* around a city, using Google Maps or the like, ...
2
votes
1answer
167 views

How to create a time slider using arcgis javascript that only shows a year at a time?

I am looking at this example on how to create a time slider using the arcgis javascript api. Instead of showing the data cumulative from the start date. I want to just show the data for that ...
2
votes
0answers
54 views

How do you create a map that has choropleths that will change with a timeslider? [closed]

I have data for different countries over time that I would like to display in a choropleth map with a time slider that plays automatically on click. What is the best way to do this. Thanks.
2
votes
0answers
77 views

Is there a way to link eVis with time manager in QGIS

I have a point vector layer created from way points of a GPS. I then used the eVis plugin to view geotagged photos for each of these point. I also used the time manager plugin to play through the ...
1
vote
4answers
2k views

Creating a Time series NDVI map

I would like to create a NDVI Time Series map? How do I do that? The one I probably would like to have similar like this http://proceedings.esri.com/library/userconf/proc02/pap0593/p05931.jpg I ...
1
vote
3answers
1k 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
224 views

storing date range in PostgreSQL/PostGIS for time parameter in WMS/WFS

Using GeoServer I want to deliver some objects/features with WFS and WMS. The objects and their attributes have a date range during which they are valid. Say, we have street lamps and each street lamp ...
1
vote
1answer
52 views

How can I use ArcGIS Online to calculate walking times from points?

never did anything like this before I am currently planning an accessibility analysis for the recycling infrastructure in my city (waste collecting points) and I want to determine the walking time ...
1
vote
1answer
28 views

wms with time dimension

I set up a layer with "time" dimension in Geoserver, but I'm having quite a hard time figuring out how to use it... It is a vector layer with some polygons in it. This is my layer configuration for ...
1
vote
1answer
39 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 ...
1
vote
1answer
97 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 ...
1
vote
1answer
201 views

PostGIS Implementation of Brabyn and Skelly Road Network Travel Time Model

Is there a PostGIS implementation of the Brabyn and Skelly road network travel time model for the New Zealand road network? This model is outlined in: Brabyn L, Skelly C. Modeling population access ...
1
vote
1answer
261 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
14 views

Alternatives to GeoRSS for time-sensitive point data

I'm looking for a suitable data format for various organisations to publish point data with a recent time component, like events, road closures, etc. GeoRSS is the obvious candidate but: It's XML, ...
1
vote
1answer
26 views

ExportToPNG with definition query for unique values?

I have a MXD with a layer that has a field that has many values. I need to export multiple layouts to PNG, applying a definition query to show the unique values for that layer. i.e. Just show the ...
1
vote
1answer
61 views

OpenLayers measure map rendering time

I am using OpenLayers version 3 (answers with ver 2 are also OK) and want to measure how long it takes to render the vector layer. So, I have a vector layer with features: var vectorLayer = new ...
1
vote
2answers
36 views

Select feature based on both its own attributes and another feature's attributes

I have two points within a polygon, each representing a specific event with a date (listed as 120101 and 120719). The polygon itself represent an event for an extended time period (start: 120626 and ...
1
vote
1answer
29 views

Different timevalues in tool make service area ModelBuilder

In ModelBuilder i want to make a lot of service area layers. The input data would be the same but the day of time would change every time. So from 6:00:00 untill 22:00:00 i created already a table ...
1
vote
1answer
44 views

Inserting Timeline (similar to Legend) on map using ArcGIS for Desktop?

is there any way to insert a timeline in ArcGIS 10.1? I mean timeline more as a kind of legend showing at which time (or after how many minutes) point features occured (not animated or dynamic!). I ...
1
vote
1answer
37 views

Locating Moon in Sky from Earth

I am working on project which need to find moon location from a specified lat, long on earth. So basically info I am having is Lat,Long and Timezone. Format of the moon location Info? So first in ...
1
vote
1answer
123 views

Start and End Dates for CartoDB Torque

I was wondering if there is a way to have CartoDB's torque read end dates for point files, the same way that ArcGIS desktop can. I am trying to plot the foundation of certain cities, and then remove ...
1
vote
1answer
180 views

Creating Time-series (Temporal) Map of NDVI?

Is there a best practice for a cartographer to create a Time-series or Temporal Map ? I have 83 of the NDVI in an imagine format and should I converted them to polygons and populated them and display ...
1
vote
1answer
168 views

Why do classic google maps and the modern google maps show different types of driving times?

As I am currently working on a project, where driving times are quit important, I've noticed that classic google maps and modern google maps show different types of car driving times. While the ...
1
vote
1answer
121 views

Does QGIS Server come with time dimension support (WMS, WCS)?

I wanted to know if QGIS Server allows publishing data with time dimension support, in the case of services such as WMS or WCS?. If this is possible, how can I enable this feature?. Thanks for your ...
1
vote
1answer
266 views

How do I get an accurate time attribute when importing a GPX layer as a vector

When I import a GPX file in QGIS (as a vector as track points) and I check the time attribute it appears to be 4 hours later than it should be. Interestingly when I take this same GPX file and use ...
1
vote
1answer
428 views

Custom time slider

Is there someone who made a custom time slider? Or someone knows where I can find examples or scripts for this subject? I need a time slider that would work also for years that are B.C. (e.g. 850 BC) ...
1
vote
1answer
195 views

QGIS not reading colormap from hand-edited .qgs file

I have a set of rasters which store solar radiation incidence over the course of a year. In QGIS, I want to map the same extent, and with the same reference features, varying only the solar raster ...
1
vote
1answer
2k views

Adding time enabled layers to ArcGIS online

I am trying to add time enabled layers into ArcGIS online. The information in the ArcGIS resource center makes it sound like it is possible to add time enabled layers from ArcMap to ArcGIS online. I ...
1
vote
1answer
557 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 ...
1
vote
0answers
17 views

Time enabled service has different time extent in ArcGIS Online?

I have a time enabled layer that I have published to ArcGIS for Server 10.3 There are times ranging from 5am to 10am (all on one day). This flows through to the ArcGIS Server service as expected: ...
1
vote
0answers
23 views

Adding time enabled feature to layer running newest to oldest

I am seeking information about the Time Enabled feature of my map created in ArcGIS 10.1, Basic (ArcView). Specifically, I am wondering if the layer can be made to run from newest to oldest. I ...
1
vote
0answers
40 views

How to to get time slice in raster dataset using ArcGIS?

I have a couple of rasters made in different time. Some of the rasters are overlapping and some of them - not. I need fast and efficient way to get time sliced values for each pixel. For example: ...
1
vote
0answers
71 views

How to set time field when generating a GPX track with Python OGR?

I want to generate a GPX file with Python OGR. In particular I want to generate a tracks (layer of features of OGR type wkbMultiLineString) My script is below. I get the error ERROR 1: No such field: ...
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vote
0answers
26 views

How do you restrict road access by time in ArcGIS Network Analyst? [duplicate]

I was wondering if there's a way to restrict road access based on time of day (i.e., create a time restricted road). I'm familiar with restricting roads based on vehicle weight/height, but time ...
1
vote
1answer
54 views

ArcGIS 10.2.1 working with time and reporting when feature geometry has changed

I'm working, with ArcGIS 10.2, ona whole lot of petroleum licencing data that chops and changes, in active areas, on a relatively frequent period. i collect the geometry data month by month (saving ...
1
vote
0answers
35 views

Where to find spatial-temporal data? [closed]

I am an italian student, and I'm looking for a particular dataset. I'm interested in a model for spatial regression, with time-varying data. I'm looking for data with coordinates, measured in ...