Questions tagged [date]

Time stated in terms of the day, month, and year.

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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 ...
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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....
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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 ...
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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 ...
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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 ...
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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?
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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 ...
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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 ...
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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() ...
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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, ...
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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/...
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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 ...
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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
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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 ...
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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 ...
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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 ...
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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,...
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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 ...
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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 ...
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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 ...
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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&...
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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....
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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
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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?
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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
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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 ...
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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 ...
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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/...
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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 ...
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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 ...
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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 ...
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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.
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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
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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-...
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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 ...
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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 ...
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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 ...
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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 ...
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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
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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
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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
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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
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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
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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);...
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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 ...

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