Questions tagged [date]
Time stated in terms of the day, month, and year.
234
questions
0
votes
0answers
36 views
Time Manager on LizMap - problem of start time
We published a project under Ubuntu Server, QGIS, LizMap web client, ..
Everything works except the "time manager".
Under the desktop client, the time manager works correctly (for example
...
0
votes
0answers
20 views
GeoServer sending the wrong date in JSON URL while fetching data from JavaScript [closed]
I have GeoServer layer,
As I open it from GeoServer layer preview, the dates are being shown properly
I have configured timezone for the JVM by Setting Timezone in Tomcat, but still the problem exists....
0
votes
1answer
151 views
Converting Unix epoch time to GMT time using QGIS Field Calculator
I am trying to convert the 'time' and 'updated' column from epoch to date/time GMT but I am struggling to do so. I know I have to use the field calculator tab but I am a basic at using scripting.
I am ...
2
votes
1answer
16 views
Google Earth Engine: Calculate milliseconds since epoch from datetime of uploaded shapefile?
I want to get the milliseconds since epoch of thousands of points, each with different timestamps. Here is what I believe I need to do, but my Google Earth Engine knowledge is limited and I can't find ...
0
votes
1answer
140 views
Definition Queries for most recent date in ArcGIS Pro
I have a feature class containing sample results for locations that includes thousands of records. Many of these are overlapping and have the same location ID. I need to label each sample based on the ...
0
votes
1answer
17 views
How to arrange months properly in ArcGIS dashboard
I am trying to edit my category selector for month in ArcGIS dashboard as it is displaying the months alphabetically instead of January, February, March and so on. How do I rectify this?
1
vote
1answer
24 views
Updating datefield from a string with UpdateCursor
I have a string I'm slicing and then using UpdateCursor to update rows with the outputs. The string is formatted like this:
Foo_YYYYmmddHM_Xy_Ab_Bar
I'm struggling in getting only the YYYYmmdd part of ...
1
vote
1answer
19 views
Create a list/sequence of numbers from two DOY in Google Earth Engine
I would like to create a list of numbers from a DOY to another DOY every 7 days, dependent on a specific date that I set. This then matches an imageCollection I have, which I then use to create a ...
0
votes
1answer
28 views
Error using.getInfo function within a function Google Earth Engine
I'm applying a function to map a calculation over a list of dates. In the old calculation I just manually entered each date and ran the code. As part of if that code I would use .get('year).getInfo() ...
4
votes
1answer
99 views
Converting string column to datetime column in QGIS
I have an attribute column that has a string datetime and I want to convert that to a date column. I first attempted to simply add the time column in an expression, and I only got the year/month/date, ...
2
votes
2answers
49 views
to_date arranging dd/MM/yyy
I have a column as a string 10/12/2020 13:14:39 I want to convert it to Date format (I'll do that using the refactor tool later). First I need to rearrange this so the time is discarded and the dd/MM/...
0
votes
1answer
23 views
How to prevent ArcGIS Pro Arcade expression adding one month on to my desired date?
I am trying to add dates to two date fields in ArcGIS Pro using expressions in Arcade.
When I use the expression Date(2020,10,29) the result in the field is 29/11/2020, which is one month later than ...
1
vote
1answer
26 views
Formatting date inside ArcGIS Online Indicator widget
In my data I have a field in "date" format. The data source is a survey123 layer.
I am not able to format the appearance to just year, month, day. In the widget the Time and pm or am is ...
2
votes
1answer
56 views
Making file path part variable using Python [closed]
I am creating a python script to help automate updates.
I am just wondering does anyone know how to make part of my file path a variable, as each month the python script will run via a different file ...
0
votes
1answer
145 views
Trouble with using Freemarker to formate Date for GeoServer GetFeatureInfo
I'm having some trouble while trying to use the Freemarker Template to display dates in the desired format.
I store points with a date information in a PostGIS database written through an FME-process ...
2
votes
1answer
4k views
Converting ee.Date object to client string in Google Earth Engine?
I'm trying to export all the images in an ImageCollection to Google Drive and by default name the output image with the date using format() function. However, when I try to name a export task by a ...
0
votes
1answer
100 views
Converting raster stack or brick to ts time series object to run in BFAST
# created rasters from .tif file (r1,r2,r3,r4,r5,r6,r7)
# created raster stack
r_stack <- stack(r1,r2,r3,r4,r5,r6,r7)
class : RasterStack
dimensions : 743, 1893, 1406499, 7 (nrow, ncol,...
3
votes
2answers
132 views
Adding number of months (as integer) to date format in QGIS
I am creating a form for QFIELD in a QGIS project.
I have three fields:
Date of today ([$now]), as a date format,
Number of months allocated for a certain task, as an integer
The due date for this ...
0
votes
0answers
27 views
Text to date field conversion
in QGIS I created a point layer with a field which was initially set as text. For each feature, I wrote in that field a date: "yy.mm.dd". I then modified the field to "date" with a ...
0
votes
1answer
43 views
Finding out when image added to ImageCollection of Google Earth Engine
I am trying to figure out when an image (or observation in general) was uploaded to Earth Engine. I have a script that gives me the most recent image date, but as far as I can see this refers ...
0
votes
0answers
46 views
QGIS temporal animation with date values in different columns
I'd like to create a time series animation in QGIS 3.14. My data is structured in a way that the dates are given by the field names. I have field names like "country_name", "1/15/20&...
1
vote
1answer
49 views
Filtering Sentinel-5P from metadata on Google Earth Engine
I need a S5P image from a spesific date. Is there any way to filter image collection based on the metadata on GEE so the result is only from an image. I've tried something like:
var collection = ee....
2
votes
1answer
107 views
Finding the date when a specific polygon was created using ArcGIS Desktop
I have a shapefile of polygons. Polygons were created in different times (digitized on raster image). I would like to determine the date that specific polygon was created.
Is there any tool that can ...
0
votes
1answer
38 views
Where is date information in OpenStreetMap data files?
I would like to access temporal information from OSM datafiles (not the changeset file)
Files *.osm.pbf downloaded from the GeoFabrik website or another OSM mirror do not show the following ...
1
vote
1answer
80 views
Converting text field to date field in ArcGIS Pro
How to convert date, which is in text formated field to date formated field?
Also, there is dates which have only year, without days and months and empty fields.
I've tried Convert Time Field. But it ...
1
vote
2answers
103 views
Sorting raster stack by dates in R
I need suggestion on how to sort a raster stack by dates. A reproducible example is in the following:
library(raster)
Create a reproducible rasterstack;
set.seed(123)
r1 <- raster(nrows = 6, ncols ...
1
vote
1answer
231 views
Stack RasterDataset taking into account dates between images using R
I would like to stack a raster dataset taking into account the number of days between images. Sometimes the number of dates between observations are 8, 16 or 365 days.
Is there any function to do it ...
1
vote
1answer
57 views
Attribute table conversion date format
I want to change the date format with different date formats in the attribute table to the one format which is fitting for the Time manager. Does it work with the field calculator?
For example 12....
4
votes
2answers
229 views
Obtaining date data from layer name in QGIS
I have a column with name of the satellites image background (Landsat, Sentinel), in this name I have a date information into the text.
How do I extract the date data from this text?
0
votes
1answer
24 views
Restructure data.frame By Date Values in R [closed]
I have a data.frame in R shown below..
This data.frame summarizes counts by week for every year in a time series dataset.
I am now trying to rearrange this matrix such that the years (2001-2020) will ...
2
votes
1answer
110 views
Using Field Calculator to Combine Month, Day, Year into Date
I merged 2 layers in QGIS and am trying to clean up the attribute table using the Field Calculator. One layer has 1 column called Date in the format YYYY-MM-DD. The other layer has 3 separate columns ...
1
vote
0answers
31 views
Date format conversion brings an unexpected empty space between the date parts
I always used the formula (below) in Python Calculator to convert the date format from Julian to Gregorian format. But,now a weird behaviour is happening and I am trying to figure out what is wrong in ...
7
votes
3answers
8k views
Date-format conversion
I'm using Time Manager and QGIS 1.8.0 and I am stuck at date-format conversion. Time Manager needs Gregorian format YYYY-MM-DD HH:MM:SS.ssssss in text field and I have thousands of records in "month/...
1
vote
2answers
94 views
GROUP BY clause causing ArcGIS to crash
I am attempting to find the most date for each occurrence in a given county. I am attempting to do so with a SQL expression, but every time I add a GROUP BY clause ArcGIS crashes (I am doing the work ...
1
vote
1answer
75 views
Filter Image Collection by date with conditions
I want to filter my ImageCollection for my analysis with specif time ranges. I have an Image Collection with annual max NDVI images ranging from 1982 - 2015 and a conflict FeatureCollection for a ...
12
votes
4answers
6k views
How to convert a string field to a date field
I have a layer with points which represent the fatal road accidents and the field "dates_14_D" contains their date but its type is string. I would like to convert this string field to date ...
1
vote
0answers
25 views
Image Age Information of XYZ Base Map in QGIS
Is there a way to find the age of the imagery of a base map via pyqgis? Any help on this would be much appreciated.Thanks.
1
vote
1answer
161 views
GEE: date list to filter an image collection in Google Earth Engine
I have a CSV with a column of dates. I already imported the CSV, but I would like to know If I could use that column to filter an Image Collection.
Just now, I wrote all dates and used a filter to ...
3
votes
1answer
3k views
Filter image collection with a date list in Google Earth Engine?
I know how to filter with a date range in Google Earth Engine, but I would like to filter a list of concrete dates which aren't consecutive, single days, for example, ['2005-08-05','2009-09-01','2017-...
4
votes
1answer
2k 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 ...
1
vote
0answers
210 views
Using ArcGIS Pro to select all data collected “Yesterday” regardless of the time of day
I am using ArcGIS Pro 2.4.3.
I can upgrade if needed.
I am reading a hosted feature layer from my Organisation's AGOL site in ArcGIS Pro. This is using the standard Esri Data Store. This dataset ...
2
votes
2answers
713 views
QGIS: Symbolize by date field based on current date
In QGIS 3.2.3: I have a layer/Shapefile with a date field (type DATE) that comes from a joined table. I would like to symbolize the points which are older than 10 days (based on the current date) in ...
1
vote
1answer
23 views
Using Python to label points with format dependent on date of measurement in ArcMap
I have a database of wells and water level measurements which I would like to label in a stacked manner with the ID on top and the measurement below it. If the measurement is from 2020, it should ...
1
vote
2answers
557 views
How to get current date “YYYY-MM-DD” in string format in GEE script
I tried to get current "YYYY-MM-DD" in Google Earth Engine script.
I succeeded to get current "YYYY-MM-DD" in "Date" format in GEE script.
But I want to convert it to String format for setting as a ...
3
votes
1answer
303 views
Change date format into readable format in GEE
I have code in GEE which create table with the sentinel2 mean NDVI data for certain period.
my problem is that the table in the end has two column with the dates, one is the name of each image (not ...
2
votes
2answers
610 views
Filter image collection to one specific date (Earth Engine)
I'm using GEE and I have many codes were I filter my imagecollection by using filterdate (and then I have date range) and then I work with the first image in the imagecollection, when I know from the ...
3
votes
2answers
3k views
Unique List of Image Dates from Image Collection in Google Earth Engine
I would like to create a list or array object containing a unique set of dates represented in an image collection for a given region of interest. I have a function that extracts and converts dates for ...
2
votes
1answer
41 views
Optimal way to estimate date range of an ImageCollection in Earth Engine
What is a most straightfoward way to get a date range of an ee.ImageCollection as formatted date strings?
For example, ee.ImageCollection('LANDSAT/LT04/C01/T1_32DAY_EVI').get('date_range') returns [...
3
votes
1answer
1k views
Filter Specific dates in Google Earth Engine?
I've called Landsat8 images from 2014 to 2019 using filter date function. But I don't know how can I call Landsat8 images only for June, July, and August from 2014 to 2019?
Map.centerObject(geometry);...
0
votes
0answers
12 views
Extracting the dates of Google Earth Pro VHR images using a grid?
I am doing a study on land use change and needed to quantify the bias due to poor coverage of some regions. First I would like to know if this is an issue at all in my case study.
I have a ...
