Questions tagged [date]

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

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1answer
49 views

Choosing correct datetime format

I want to change my date (string) to a date format %Y-%m-%d for the time manager. I already try with the Field Calculator. But it is not working. What should i write in the expression. And should I ...
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10 views

Display attribute values over time in a graph as a widget or pop up in ArcGIS Online

I'm trying to find a way to display weekly settlement monitoring data from a set of points as a line graph in ArcGIS Online. The charts functions that I've played around with require a statistical ...
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1answer
31 views

Converting excel integer date format to datetime using QGIS

How to convert Microsoft Excel date format to datetime format using QGIS? In example: 43089 in MS Excel is 2017-12-20.
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0answers
109 views

Is there a raster data format that can store dates instead of numeric values?

When storing spatiotemporal data, there is a need to store dates or time data. I know raster files can store numeric data (integer or float), but what about storing of dates data? I'm currently ...
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1answer
28 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).first(...
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1answer
27 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 ...
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1answer
28 views

Filter a collection using nightime in Google Earth Engine

I'm working with GOES-16 full disk data, trying to calculate the frequency of low clouds in northern Chile. I need to filter the collection so it contains only images from September 2017 at night. ...
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1answer
19 views

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 ...
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2answers
66 views

Way I can find out when a shapefile was created or last updated

I'm working with 100+ layers on QGIS, and I am trying to determine when each layer was last created or updated. All the layers are shapefiles. Is there a way I can find the creation/update date?
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78 views

Time Manager on LizMap

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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2answers
108 views

Adding days in date using QGIS Field Calculator

I'd like to create a new field adding 10 days in a date (string format) in QGIS; using the Field Calculator. For example, in the field_1 there is 22/02/2021, in field_new it should become 04/03/2021. ...
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1answer
71 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
27 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
26 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
26 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
41 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
151 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
58 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
32 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
36 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
59 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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2answers
149 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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0answers
28 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 ...
1
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1answer
76 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
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1answer
114 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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0answers
79 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
55 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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1answer
111 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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1answer
43 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
153 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
151 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 ...
2
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1answer
73 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....
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1answer
34 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 ...
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1answer
211 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
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1answer
143 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 ...
1
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1answer
80 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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1answer
201 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 ...
1
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1answer
258 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 ...
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2answers
127 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
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1answer
30 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
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2answers
762 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 ...
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1answer
457 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 ...
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0answers
27 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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0answers
283 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
804 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 ...
2
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1answer
46 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 [...
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0answers
31 views

Why the data type of date column is showing as string in QGIS but back in csv file it is date type?

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 ...
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2answers
87 views

Getting top 1 record from shapefile by descending order using ArcPy SearchCursor

I have a shapefile from the date field in it. I'm looking to get top 1 record date value by descending order. readRows = arcpy.SearchCursor(shapefile, "", "", "Last_Updated" ,"Descending") Is ...
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1answer
34 views

Adding Thirty years to date field using ArcGIS Pro Field Calculator

I have 2 fields one is Creation Date the other is Maintenance Date. The Maintenance Date should be 30 years after the Creation date. I have been trying to use the field calculator for this. But I ...

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