Skip to main content

Questions tagged [time]

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

Filter by
Sorted by
Tagged with
0 votes
0 answers
6 views

Time enabled rasters in ArcGIS Online

Looking for some guidance on being able to create a radar image loop of time enabled rasters in ArcGIS Online. I can create a loop of rasters in ArcGIS Pro with time enabled, but as soon as I try and ...
user252203's user avatar
2 votes
1 answer
53 views

Estimate time spent by ships in each grid using ArcGIS Pro

I have data on yearly ship movements in an area. The area is divided into 1km x 1km grids. The yearly ship movements are available in the form of tracks which are polylines. The tracks feature class ...
HKN's user avatar
  • 45
4 votes
1 answer
88 views

QGIS can't create layers with DateTime with UTC data

I was creating a geopackage of points with a DateTime field, and the QGIS (version 3.32.3-Lima) seems to treat it as naive localtime data. Layer/CreateLayer/NewGeopackageLayer: Layer properties/...
Dave X's user avatar
  • 1,699
0 votes
0 answers
21 views

Correlating two space time layers

I have two point datasets, both showing the x,y location and date of separate events (1. environmental event,2. detection of bacteria). I'm trying to understand their spatial and temporal relationship....
Crazymonkey44's user avatar
1 vote
1 answer
31 views

Expression Builder using times

I have brought in vector layer from a .csv file containing Total Response Time for Emergency Services Incidents. While the times are in HH:MM:SS format I believe that having brought it in as a .csv ...
Mark Leander's user avatar
0 votes
0 answers
25 views

Get rid of points that are over 500m from previous time point

I have gps data from animals over time. The collars recorded the location of the animal every 15 minutes, but there are some funky points that are obviously an error as the animal could not have moved ...
Alex 's user avatar
  • 41
2 votes
1 answer
291 views

Find correct URL for WMTS Time layer for Leaflet

So I have this WMTS-Layer (the GetCapabilities Request): https://wmts.marine.copernicus.eu/teroWmts/GLOBAL_MULTIYEAR_WAV_001_032/cmems_mod_glo_wav_my_0.2_PT3H-i_202112?request=GetCapabilities& ...
Lenn's user avatar
  • 1,297
0 votes
0 answers
30 views

NDVI temporal analysis error in Sentinel

I need to do a temporal analysis of NDVI with Sentinel images from 2019 to 2023, using monthly composites and extract the NDVI value for random points created. However, it is generating empty data. ...
Paula Duarte's user avatar
1 vote
0 answers
24 views

Extract Multi Values to Points for two time-enabled layers using ArcGIS Pro

I have a time-enabled point layer (5-minute resolution) and time-enabled raster layer (hourly resolution). I'm trying to create a new field in the point layer by extracting values, but it's doing so ...
RML's user avatar
  • 11
0 votes
0 answers
19 views

Multitemporal supervised classification with spectral signatures in GEE

I need to run a supervised classification on GEE using Landsat image about a determined date with the spectral signatures derived from a image of another year but same month. Is it possible?
Leo Lizárraga's user avatar
2 votes
1 answer
68 views

QGIS Dynamic aggerate only features visible in time slice

I am unable to figure out how to only sum the lengths of the features visible in the map between @map_start_time and @map_end_time? The aggregation works changing over time but seems to include all ...
Bandit253's user avatar
2 votes
1 answer
93 views

QGIS Temporal Controller dynamic text

I have a temporal dataset and it animates and I have a dynamic title displaying the time period, but I am unable to get a dynamic label to report the length of the linear features at that time period. ...
Bandit253's user avatar
1 vote
0 answers
30 views

QGIS 3D viewer autoupdate frames from temporal controller

I am using QGIS 3.30.3 and I am trying to make a cinematic with the 3D viewer of some flood tiles. I have a Digital elevation Model and a few flood tiles with temporal information. Using the temporal ...
luis castillo's user avatar
3 votes
4 answers
261 views

Extracting 'hour' from 'time_stamp' with QGIS

I am trying to extract the hour from my time_stamp which is in the format dd/mm/yyyy 00:00:00 as a textstring. I am using the expression hour("time_stamp") in the field calculator, but the ...
Eleanor Baker's user avatar
2 votes
2 answers
108 views

Invalid unixTime error when processing GPKG file with ogr2ogr

I am looking at forestry data of Finland's Etelä-Savo region. I download the data: curl -L -O https://avoin.metsakeskus.fi/aineistot/Metsankayttoilmoitukset/Maakunta/MKI_Etelä-Savo.zip Unzip it: ...
zabop's user avatar
  • 2,224
0 votes
0 answers
139 views

Timelapse in GEE

This code is working and the video is active but only images are there. I couldn't add the date (year) to the images. How can this step be accomplished? // Define your collection var collection = (ee....
user233587's user avatar
3 votes
1 answer
134 views

Animating travelled path in QGIS without temporal information and temporal controller

In QGIS, I have a path (line layer) that I want to animate: it should succesively build up like showing a point marker that "drives" along the line and shows (unveils) the part of the total ...
Babel's user avatar
  • 73.2k
2 votes
1 answer
103 views

Calculating age of overlaying points with virtual fields in QGIS: optimize compute-intensive approach

I am working on a project in QGIS, where I have two point layers, named "Infrastructures" and "Inspections". In my system, whenever an infrastructure is inspected, a new point ...
MartinMap's user avatar
  • 8,338
5 votes
1 answer
302 views

Hiding layer for N seconds in QGIS: animate symbols with custom intervals

This is a follow-up to Making geometry blink in QGIS, for which I couldn't find any answer online. It is relatively simple, using the Time Manager plugin or the Temporal Controller native tool in QGIS,...
Trikelians's user avatar
1 vote
1 answer
155 views

Changing field type from string to time in QGIS

I have a file with arrival and departure times for public transport in the format XX:XX:XX and field type Text(string). I need to be able to sort it from smallest to largest (i.e. earliest to latest ...
Selma's user avatar
  • 301
0 votes
2 answers
102 views

Loop an operation in all features

I have a layer that has date and time information and I need the difference between this information in seconds, I managed to get close to this but I needed to loop for the difference between the ...
Mestrexama's user avatar
2 votes
1 answer
79 views

Selecting rows in the attribute table depending on the time in QGIS

Related to this and this questions, having the following table, I would like to select just one row per minute: I have tried this expression, unsuccessfully: time = array_min (array_agg ( time, ...
Trikelians's user avatar
1 vote
0 answers
100 views

Creating an animation of raster layers within a QGIS map view without manually setting the time of each layer

I am seeking to create an animation of raster layers within a QGIS map view (preferred) or layout view with titles, etc., without manually setting the time of each layer and without exporting ...
Nigel Cantwell's user avatar
2 votes
1 answer
85 views

Calculating time difference between rows of the same field separated by cluster ID in QGIS

I have just formed point clusters using ST-DBSCAN, which gave me a single output with all points categorised by the new column "CLUSTER_ID". My next step is to acquire the centroids of each ...
Barbara Perez de Araújo's user avatar
5 votes
1 answer
348 views

Travel time for shortest path (by distance) in QGIS

I have a network with previously calculated and direction-dependent travel time for each edge (speed_fw for drawing direction and speed_bw for against drawing direction). I prepare the network in QGIS ...
winnewoerp's user avatar
  • 1,504
0 votes
0 answers
70 views

Adding missing times to empty points

I'm trying to create an animated map showing the trains moving on these lines. I have the arrival and departure times for each stations, names, all the data I need. But in order to make a smooth ...
DanielP's user avatar
5 votes
2 answers
294 views

How to calculate distance to nearest neighbor when new candidates are created over the years?

I want to calculate distances between sold properties and the nearest wind power turbine over the years 2013-2022, in FME. QGIS is also an option. I have coordinates for them both and also dates for ...
Josefin's user avatar
  • 51
0 votes
0 answers
61 views

QGIS Countdown timer

Looking for a solution to implement a countdown timer that allows to report the column of a table with the time value at the same time that a new point geometry is entered. The idea would be to ...
Acperience's user avatar
  • 1,142
0 votes
0 answers
36 views

Time format/ data display changes following join then export to data

I am working on a simple join of data in an excel table to create an attribute table from kml's that were converted to polygons. The join works perfectly, however when exporting the data as a new ...
A Wohl's user avatar
  • 1
0 votes
1 answer
301 views

Display label depending on timedate attribute used by Temporal Controller

I have a layer with two attribute columns: stop_name and schedule. I am animating this layer using Temporal Controller, so a dot displays on the map whenever the schedule time is active, as seen on ...
Trikelians's user avatar
3 votes
2 answers
856 views

Counting seconds using QTimer in PyQGIS [closed]

I am having a hard time counting seconds in PyQGIS using QTimer. The current code waits for 1 second and prints 5 times "1" as output. I desire that after every second the output should be ...
Sajeel Zafar's user avatar
3 votes
3 answers
307 views

PyQGIS: selecting WMS timestamp in a standalone script

I'm trying to create a standalone python script that uses PyQGIS to create a map with a raster layer read from WMS. My idea was to create a QgsRasterLayer with provider set to wms with the time ...
Val's user avatar
  • 273
3 votes
1 answer
365 views

Creating animated line moving between points in QGIS

I have a point file, with Date:Time enabled. Rather than just animate the cycling through of points, I would like to have a line moving in a straight direction from one point to another in date order. ...
Matt Houston's user avatar
0 votes
1 answer
95 views

Mismatch between raster displayed in QGIS animation and Temporal Control settings

I downloaded hourly rainfall in raster format from a French weather forecasting model (AROME). Each raster represents the predicted precipitation over the following time window: raster_name-1h to ...
ZKB's user avatar
  • 1,154
1 vote
1 answer
37 views

QGIS TimeManager returning zero records

I am using QGIS 3.26 and TimeManager 3.6 and have imported a GPX file with ~10000 times in a qDateTime field called "time". Viewing the label and attribute table show these appear to be ...
Ewen's user avatar
  • 121
0 votes
1 answer
222 views

How may I retrieve the current date output from TimeSliderChoropleth (the one displayed in the slider)?

How may I retrieve the current date output from TimeSliderChoropleth? image showing current date displayed in the timeslider import folium from folium.plugins import TimeSliderChoropleth base_map ...
joaoambiente's user avatar
2 votes
2 answers
346 views

Change Time Format in QGIS

How can i change time format from 0.377777 to normal time 9:00 in qgis is there any formula or anything. I tried the entire conversion in Excel with custom format h:mm but it takes me a lot of time to ...
Bruno B's user avatar
  • 849
1 vote
0 answers
27 views

USGS Multiple Dates listed and I want to know what they mean

I want to take a look at a piece of land over time and evaluate the change in topography over time. I am using USGS to download some data and I realized they give you a list of dates that correspond ...
Sara's user avatar
  • 11
1 vote
2 answers
695 views

ArcGIS Pro Field Calculator: Updating each row with a minute added to previous time

I'm trying to update each row in my point shapefile with a date. What I want is the first row in my below table to read 7/14/2022 12:00:00 AM, second row to be 7/14/2022 12:01:00 AM, third row to be 7/...
Connor Garrett's user avatar
0 votes
1 answer
198 views

Time-enable a WFS to use on ArcGIS Online

Is it possible to time-enable a WFS with a date field properly coded as DATE in ArcGIS Online to use with the new timeline widget in Experience? If so, how?
MM23's user avatar
  • 1
-2 votes
1 answer
194 views

Space time nearest neighbor [closed]

I have a dataset with 3 coordinates time, latitude and longitude. How can I compute the nearest neighbor point for each point in the dataset using the 3 coordinates? I'm using Python but I can't ...
user38747's user avatar
3 votes
1 answer
2k views

Date label on a Sentinel-2 image collection (Google Earth Engine)

I found a way to add text to the images of a collection using a package that GEE user Gena created for this purpose. I used this code as guide, in the addText function I used the property system:...
Gabriela Chaves's user avatar
0 votes
1 answer
396 views

How to obtain the daily Temporal variation chart using Sentinel 5p methane

I want to generate the daily temporal variation chart of methane concentration over India for the years 2019, 2020, 2021 and 2022. The average methane values for a single day, say, 1st January is to ...
Aiswarya's user avatar
0 votes
1 answer
53 views

Calculating average time between revisits into a pixel in ArcGIS Pro? [closed]

To determine the revisit rate of elephants into specific areas (several pixels across a map) I am looking at calculating the average time between visits into each specific pixel. I have a bunch of GPS ...
EmmaE's user avatar
  • 23
4 votes
2 answers
1k views

Convert date/time format in QGIS

My shapefile contains a attribute field called "created" (type QString) and this field holds the date and time of every feature in this format: "2022-03-04-13-28-26" (yyyy-mm-dd-hh-...
Hannes's user avatar
  • 129
3 votes
2 answers
362 views

QGIS 3.20 and WMS-T is not passing the TIME parameter

I'm having trouble using QGIS version 3.20 on Mac OS with a WMS-T layer. The WMS service is available at https://ows.dea.ga.gov.au/wms. The specific layer I'm using is the DEA Land Cover layer, named ...
Alex Leith's user avatar
  • 13.5k
0 votes
0 answers
507 views

Enabling time dimension for layers in GeoServer

I have a collection of GeoTIFF files, each one corresponding to a date and time. How can I add the information date and time to those GeoTIFF, so that GeoServer allows the enabling the "Time"...
Sugunadevi S's user avatar
2 votes
0 answers
172 views

Performing (semi)automatic export of several maps at once using QGIS

I am trying to do automatic export of several maps on weekly basis. There will be input data for every day of the week and on the end of the week I want to export 7 maps. I tried the Temporal tool but ...
Jan Jann's user avatar
0 votes
1 answer
4k views

Finding if point is in polygon then taking attribute from polygon dataframe and inserting it as a column in the point dataframe

I'm doing some GIS analysis in Python for COVID work. I've geocoded our entire membership (gdf_schoolAgedChildren) base and captured their locations in a shapely point data type (for each member). I'...
denpxc's user avatar
  • 11
2 votes
0 answers
131 views

Create and publish a temporal (time series) viewer that synchronizes multiple layers from QGIS

I want to create a time series layer viewer as a URL. I have 3 layers (more will be added): Points1 Points2 Lines1 When a user changes the time, all layers will synchronize and show the correct ...
Tony Walters's user avatar

1
2 3 4 5
7