Questions tagged [date]
Time stated in terms of the day, month, and year.
235
questions
2
votes
2answers
58 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?
0
votes
0answers
23 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
0answers
56 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
...
3
votes
2answers
91 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.
...
2
votes
1answer
21 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 ...
1
vote
1answer
25 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 ...
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
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
29 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
101 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 ...
3
votes
2answers
133 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 ...
1
vote
1answer
50 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
0answers
47 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&...
0
votes
1answer
44 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 ...
1
vote
1answer
81 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 ...
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 ...
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,...
1
vote
2answers
107 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
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....
0
votes
1answer
25 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 ...
0
votes
1answer
155 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
115 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 ...
1
vote
1answer
76 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 ...
0
votes
1answer
150 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
vote
1answer
167 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 ...
1
vote
2answers
96 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
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
568 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
313 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 ...
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
0answers
215 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
627 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
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 [...
2
votes
0answers
29 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 ...
2
votes
2answers
75 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 ...
0
votes
1answer
26 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 ...
0
votes
0answers
125 views
Getting week number from date using Arcade with ArcGIS Online
How can I get the week number (week position in year) from a date with ArcGIS Online’s Arcade?
2
votes
1answer
70 views
Add date to an image collection to export to CSV
I calculate the number of fires for a region and export the result to Google Drive as a CSV file, but I can't add the date to the image collection to export, it gives the following error:
...
2
votes
0answers
39 views
GEE - Get date of ImageCollection mosaic
I have created mosaics by date from an ImageCollection and now want to label each mosaic with its corresponding date. This is my function to label the ImageCollection:
var date_label_pos = ee....
3
votes
1answer
89 views
Custom form with QT for QGIS 3.4, Date edit Widget, Null value
I made a custom form for QGis with QT-designer and I have a problem with the Date-Widget.
When I create a form in QGIS with drag and drop or automatically, then it works: Fore a date-field I can ...
1
vote
1answer
276 views
Datefilter in leaflet.js
How do I filter data by date. If I want to filter, I can see the old filtering too. The layers are stacked on top of each other. How do I get the current date range.
<div id="time-ranges" class="...
0
votes
1answer
366 views
Difference between `system:index` and `system:time_start` properties in Google Earth Engine
If I want to know the date of image acquisition, would it be the system:index or system:time_start property?
I'm afraid I have been created a mess and used wrong dates.
For example, if I have this ...
1
vote
1answer
34 views
Python code snippet to label years (e.g. 2015) and not label anything with a 0
I've been unable to solve this seemingly rudimentary issue of running a python snippet via the label expression option in ArcGIS. I've read this documentation Building label expressions, but wasn't ...
