Questions tagged [date]

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

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1 answer
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Carto time-series widget: how to change bucket labels?

I am using the Carto builder animated time-series widget based on a number column that contains a year as a four digit integer. In the widget's horizontal axis, the buckets are not labeled with ...
0 votes
1 answer
121 views

ArcPy - Get Date as parameter value and calculate Date field

In my ArcPy script I have an input parameter for the Date, so the user is asked to input a date value (time is not needed) using the data type GPDate. In the script I calculate a new field, field data ...
1 vote
1 answer
67 views

DataTable Charts issue in Google Earth Engine

I am working on drawing a chart using datatable. So I followed the instructions in https://developers.google.com/earth-engine/guides/charts_datatable I noticed a 30 days shift between the data and the ...
1 vote
1 answer
48 views

Filtering by Current date

I am trying to build a query on a layer that uses the current date with a data source of a file geodatabase. I had this query working in ArcGIS Pro, but would like to figure it out in QGIS. In Pro, ...
2 votes
1 answer
60 views

Making rule on dates for vector points in QGIS

In QGIS, I would like to create a rule-based on dates for some vector points. These points have a field for dates, in the format dd/mm/yy. The rule would be such that if a date is less than a certain ...
1 vote
0 answers
18 views

Auto update date-time in QGIS

In QGIS 3.10 I need something to auto update a datetime attribute. I need it to update only when any other attribute is updated. I have tried the following: Steps: Add a Edited Date Field (ESRI uses ...
1 vote
1 answer
159 views

Date coming through as NULL when data type is set to "date" in csv/t

If I set the data type to date(DD-MM-YYYY) in the CSVt file the date comes through but as a String/text. But I really need it to be date type. My CSV field looks like this: NAME,DATE,TIME,SPECIES ...
3 votes
0 answers
68 views

Data type of date column is showing as string in QGIS but back in CSV file it is date type [closed]

I have created a .csvt file as name as same CSV file and placed in same directory. After that data type of date column are showing as a date type but when I am checking it in attribute table values ...
2 votes
1 answer
47 views

ArcMap - Date field

I am trying to append some data to an existing enterprise geodatabase feature class, the data I am trying to append has a date field where some entries are in correct, eg instead of 03/19/1983 they ...
0 votes
1 answer
107 views

Display layer with its date in GEE

I want to display the image with its date as the layer name, but the following code does not work. var s2 = ee.ImageCollection('COPERNICUS/S2_SR').filterBounds(roi).filterDate(startdate, enddate)....
0 votes
1 answer
544 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,...
0 votes
1 answer
458 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 ...
0 votes
0 answers
31 views

Creating date fields in ArcGIS Pro

I am trying to create a month and a day column in ArcGIS Pro 2.8. For values I just want to have "01" and "01" for month and day respectively. So, I have 1032 rows, thus "01&...
1 vote
1 answer
322 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 ...
1 vote
1 answer
44 views

filter.date not working GEE

I am trying to filter deforestation alerts (image collection) by date. However, it does not work, because my output is empty. My code is the following: var date1 = ee.Number(fecha1.getRelative('day','...
2 votes
1 answer
85 views

Update a date field to now(), when a checkbox has been checked in QGIS 3.16

I want to update my date field to the current date when a checkbox has been checked.The date field is Sur_com, the checkbox is Sur_check. I have tried codes below: First: layer = qgis.utils.iface....
0 votes
0 answers
46 views

Function returns zero features GEE when filter image collection by date

I am trying to create a function that filters a collection by a date range. In my code, the user can select two dates in which they want to create an anlysis. The way the code is build, the users fill ...
0 votes
1 answer
69 views

Change date type of entire image collection from Julian to gregorian date GEE

I am having an image collection which contains two bands, one of them is called 'Date'. The format is in Julian format. However, for my analysis I need the dates in gregorian (normal calender i ...
10 votes
1 answer
156 views

Selecting NULL or date values by Expression in QGIS

How can I select by expression from a date field in a shapefile, dates that are NULL or >= 2020-01-01? This doesn't work, it only selects those with dates >= 2020-01-01, not the NULLs "...
0 votes
1 answer
42 views

QGIS Colour points by date

I have a point layer representing bird sightings. Each sighting has a survey date associated with it. I am trying to figure out a way to have QGIS display these point in a way that each date has a ...
1 vote
0 answers
27 views

ArcGIS Pro date handling with different specificities in one column

I have a date column in my attribute table, some of the dates are just the year, and some are the month/day/year. I made the table in excel, and when I imported it into my gdb, I specific all the data ...
0 votes
1 answer
32 views

Return the acquisition time of an Landsat 7 image?

I try to get the timestamp of the least cloudy image for my region of interest (roi). I want to obtain the date of this image in the time range 2012-10-01 - 2012-12-31. I know that the image exists ...
4 votes
2 answers
194 views

Convert date/time format

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-...
2 votes
1 answer
76 views

Convert string column to date

I have a column of type string in the following form 23/02/2021 how can I either a) convert this column to Date format b) create a new column where each cell contains the value in valid date format? ...
0 votes
2 answers
54 views

What is the standard approach to store dates as pixel values in raster? [closed]

I have a raster, where the value of a pixel should represent the date at which that pixel was deforested. Dates ranging from 2015 until today. I need resolution to be at the level of day. I would like ...
1 vote
1 answer
42 views

SLD - Failed to build legend preview

I write an SLD style on GeoServer. The date in label is showing with the letter 'Z' at the end (2021-07-28Z). I want to display the date parameter in the label but without the 'Z' at the end. The '...
1 vote
1 answer
531 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
1 answer
67 views

GEE Image Collection to Multiband Image Outputs Gibberish

I'm using Landsat imagery in Google Earth Engine and am attempting to convert an image collection to a multiband image. However, before doing so I do two things: I mosaic the images by date so that ...
0 votes
1 answer
32 views

"NEW" Column of Data with DATES, for export as CSV

How could I add a "NEW" Column of Data with DATES to this SCRIPT, for export as CSV var dataset = ee.ImageCollection('UCSB-CHG/CHIRPS/DAILY') .filter(ee.Filter.date('2021-...
4 votes
2 answers
159 views

Adding today's date to attribute table using PyQGIS

I have the following script to merge a group of layers, and I want to edit the script to add a field containing today's date in the attribute table and also delete some fields by their names? root = ...
2 votes
1 answer
80 views

QGIS expression function month() does not return month in MM format

Using QGIS expressions, the following expression returns 5: month('2012-05-12') -> 5 The help, however, says that the output of this very expression is 05. I don't see an option to format the ...
0 votes
1 answer
67 views

Temporal controller year / annual data step skipping

I am working with a dataset which contains annual data for years in non-QGIS format i.e. 1951, 1955, etc from 1933 to 1955. I have used " to_date( "year" , 'yyyy')" to convert ...
2 votes
1 answer
6k 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
1 answer
28 views

sunAngle() calculation in R giving wrong results

I need to find the hourly sun angle (angle at which the sun strikes the Earth) for a particular position (latitude, longitude) for a given day in Belgium. I used sunAngle() from "oce" ...
0 votes
2 answers
74 views

Finding missing dog using Google Earth [closed]

I know this isn't the place to ask, but I need help to find my dog. I was wondering if there was anyway to possible track which way he left or what happened to him. He has severe separation anxiety ...
14 votes
4 answers
10k views

Converting string field into date field in QGIS

In QGIS 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 ...
0 votes
1 answer
104 views

Subset image collection by specific dates, cannot interpret data Google Earth Engine

I am trying to subset an image collection by a list of dates. However, I keep getting the error that my dates are not interpretable. The date list comes from an imported csv with a list of dates. var ...
1 vote
0 answers
50 views

Dividing layer with tracks by individual days in QGIS

I have a CSV file that includes about 150 dates containing tracks for a particular bird. I successfully added it as a layer in QGIS. My question is how can I divide all the dates into separate days?
4 votes
3 answers
272 views

Splitting string with dates by '/'-character and getting ancient/latest date as new column in QGIS

I have dates separated by '/' character in column "date" in format RRMMDD as on the screenshot below: I want to separate dates into another columns "date_from", "date_to"...
1 vote
1 answer
37 views

Converting dates in a feature collection to a previous date

I have a featureCollection with the dates for 2021. I would like to do a date conversion for this featureCollection to get the same dates in 2017. I have written the function above but it returns the ...
3 votes
1 answer
2k 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
1 answer
50 views

Reading Date property for an uploaded asset (FeatureCollection) in GEE

I have 16 points imported as an asset in GEE. Each of these points has a date property (STARTDATE) in epoch format. I am stuck at extracting this date in and using it to acquire before and after ...
3 votes
1 answer
798 views

Editing date in *.ssf files?

So my trimble TSC1 Pro XRS (bought in 2000) is getting old I guess and it change byitself the date. I collected data this week, but it indicate from 1998. I view this info because I can't apply ...
0 votes
0 answers
73 views

GeoServer subtracts time difference to UTC from date stored in PostgreSQL

We have in our PostgreSQL database records that include a date, i.e. stored as data type date (yyyy-MM-dd). The data are published in Geoserver. If we request the records from an OpenLayers ...
0 votes
1 answer
92 views

Modifying text box in layout view through ArcPy with ArcMap

I have the following textbox in a layout view: Is it possible to modify the text through ArcPy? I made that box as text, and it has no function added to it: I just want to change the date so that ...
0 votes
0 answers
55 views

Email an alert when an attribute in a feature gets to a certain value

I am trying to see if it is possible to send an email to co-workers when an attribute field hits a certain value. We have Playground safety inspections and I want to send an email when a playground is ...
0 votes
2 answers
101 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 ...
3 votes
0 answers
79 views

Auto updating rule based symbology categorised by date

I have a shapefile of "Detection Points". These have a "strength" attribute and a "date" on which each was made. Data collection is ongoing - that is it began in April ...
4 votes
1 answer
91 views

Visualizing most recent point by date in QGIS

Does anyone know how to visualize in QGIS, in a group of points with an associated date, the point corresponding to the last date? For example, a vector layer with 4 points: id Name Date 1 Joana ...
1 vote
1 answer
61 views

Converting date field using ArcMap

I need to convert the date field in the feature class. The original date format is 15-Jan-2012, 27-Apr-2012, likewise. How can I convert it into MM/dd/yyyy format?

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