Questions tagged [date]

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

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15 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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3answers
3k 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 field but ...
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1answer
49 views

Calculate date difference (days) with expressions (QGIS)

I would like to calculate the number of days between two dates. The first date is written in attribute table [YYYY-MM-DD] (creation date) and the second is today [now()]. The goal is, to get the age ...
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2answers
28 views

Which time format does ESA use for Sentinel-3 file names?

regarding the ESA Sentinel-3 file name convention I have got a question; which time zone (GMT, CEST, ...) does ESA use? I could not find anything yet, even it should be a critical point for many users....
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Grouping wildfires dates by season and getting sum and count using ArcPy?

I am having some trouble creating a new shapefile and CSV to group wildfires into seasons. What I want to do is to group the wildfires by meteorological season (summer, fall, winter and spring) for ...
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1answer
39 views

Calculation with Date in Earth Engine?

How can I add or subtract from a date in Google Earth Engine? See my codes here- var imagedate = ee.Date(collectionLT05_1991_1.get('system:time_start')); var imaagedate1 = imagedate+1; print(...
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1answer
46 views

Change data format in QGIS field calculator using format_date

I´d like to change the data format in the attribute table from yyyy-MM-dd (default) to dd.MM.yy using the format_date function in the field calculator. Using: format_date(date, 'dd.MM.yy') I got ...
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2answers
1k views

Transforming ArcGIS date field to integer?

I have a featureclass with a 'date' class field named 'ACQ_DATE' formatted as: 1-8-2013 24-7-2013 etc. As you can see the number of digits is not harmonized. I want to display the dates on a ...
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4answers
971 views

Parsing serial date in ArcGIS Desktop?

I have imported a shapefile that contains a serial date number that looks like this: 41256.260799. I would like to create a new field that shows only the hour and second like this: 06:33. I've tried ...
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28 views

Google Earth Engine timelapse video: How to display the date (year) of each image in the video? [duplicate]

I'm currently producing Timelapses with Google Earth Engine. I have produced the video but I haven't found a way of adding the Date (or the Year of the picture) to the different images that are being ...
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1answer
25 views

Pulling date from filename and in proper format for time enabled use?

My feature attribute table has a folderpath that indludes a date time. Example:/documents/foldername/xyz2015OCT15063333.shp It seems very simple, but I am not a programmer and have done my best to ...
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43 views

Introduce year instead of whole date in date type field using ArcGIS Desktop?

I have a field with numbers in it (concentration of chemical compounds that were presented in aquatic environments) and I'd like to combine them with a field which would have date type capabilities ...
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3answers
2k views

Symbolizing by year, when date column has MM/DD/YYYY?

I am trying to symbolize an SDE feature, so I can't add any new columns. The date column is formatted as MM/DD/YYYY. I would like to symbolize all 2015s as one symbol, 2016, 2017 as other unique ...
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0answers
44 views

Sorting Identify feature results by DATE field in ArcMap?

I'm using ArcMap 10.3. When I use the Identify tool, I often have many results and would like to sort those results in the Identify window. If I right-click on the layer name or features in Identify ...
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2answers
38 views

Selecting multiple date ranges using Select By Attribute?

Using ArcGIS Desktop 10.6.1. I'm interested in selecting multiple date ranges using Select By Attribute. I've verified that each date range works. For example Date >= '2015-04-15' AND Date <= '...
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1answer
44 views

Locating date, scale, and coordinate system of shapefile in ArcMap?

I am trying to locate the date, scale, and coordinate system/projection of a shapefile in ArcMap but when I right click on the file in the table of contents and go to properties, I don't see the date ...
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0answers
54 views

Datetime on attribute tables

I have written a script to add, among other stuff, a datetime column. I have used the arcpy.AddField_managementcommand, but it didn't have a 'Datetime' type, so I used the 'Date' type : arcpy....
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1answer
37 views

Storing date in m-dimension of PostGIS geometries

Do you know if it is possible to assign a date (whatever the format) as the 4th dimension to a geometry in PostGIS? If so, does it recognize it as a date?
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Creating polygon for each day from table with change of area over time (by day) using ArcGIS Pro?

I have a .csv with data in rows over time (date field and multiple attributes for each day) of the same single area - the fields are high temperature, low temperature, humidity, precipitation. I want ...
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1answer
402 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 ...
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2answers
3k views

Making automatic updated date and time field in QGIS?

I want to make a date and time updated field as I edit an attribute field in this format yyyy-mm-dd 00:00:00 (= 2016-05-08 11:04:00) - my local date/time. The data is in a QGIS 2.14 shapefile and ...
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1answer
71 views

How to have a date earlier than 1753 in QGIS date field?

I'm trying to map out some of my family tree but I've stumbled upon a problem of not being able to put in early dates. I created the shapefile in QGIS and included a date field (dd-mm-yyyy). Whenever ...
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1answer
246 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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1answer
240 views

Add Date to raster layers in raster stack in R

I have a raster stack and I want to add to it a Date field which will include the year-month-day for every rasterlayer. I have my dates in a one column data.frame. I tried to do this with addLayer ...
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1answer
43 views

Stripes between 2 images of Sentinel 2A (Level-1C)

Why do i get these stripes between 2 images of Sentinel 2A? (Figure) I notice that this happened for 2 images of different sensing date (even they're just 3 days away). Has anyone had this ...
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0answers
27 views

Selecting values with date-format by using SelectLayerByAttribute_management with input Parameter

I am working on a Tool which selects records depending on the input value. Works fine, till I want to select date-records. I used def buildWhereClause(self, table, field, value): # Add DBMS-...
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1answer
474 views

Changing date format in QGIS?

I have just created a date field attribute. In Proprieties > Fields of the layer I made this: And the attribute tables shows this: What I want to see is the date in this format: 07-01-2019 and ...
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3answers
129 views

Batch rename MODIS data?

I have MOD13Q1 NDVI images. Data are named in this format: MOD13Q1.A2007049.h26v06.006.2015161224938_MODIS_Grid_16DAY_250m_500m_VI.tif (YYYYDDD) Here 2007 is a year and 049 is day in year. I ...
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1answer
41 views

Selecting points in polygon in a range of time (ArcGIS)

I have: - point GPS for people (time in seconds) - buffer GPS for a car (time in seconds) What I want to do is for each buffer GPS coordinate, I want to find the number of GPS people points inside ...
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2answers
307 views

QGIS date fields widget - unable to select todays date?

This is something that I have lived with for several months as there is an easy workaround, but I thought I'd see if anyone knows of a solution, or whether it is a bug. In Layer Properties > Fields I ...
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1answer
33 views

Add default month/day to known year in new date field?

I have a text field featuring a 4 digit year. How would I assign a default month and day to the year in a new date field? ex. 2010 needs to be converted to 1/1/2010 I attempted this in the field ...
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1answer
138 views

Filter a date interval (month) shapefile

I'm trying to filter some data of a shapefile (with "Filter") for QGIS to show points in a date interval of a shapefile. I have a shapefile which has a table of attributes of sightings of animals with ...
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1answer
176 views

Filter Google Earth Engine image collection between today and 10 days ago

I wrote a small script that filters GEE image collection by date that I'm manually change: var start_date = '2018-11-02' var end_date = '2018-11-30' // choose image collection var ls8 = ee....
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2answers
1k views

Binding between QGIS custom form (Qt Designer) and date/time field in SpatiaLite database table?

For my attribute table I created a custom form in Qt Designer. The table has a date field and a time field. In Qt Designer there are widgets for entering date and time but what data type is expected ...
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0answers
141 views

Converting double to date field using QGIS?

In ArcMap I have a table with a column with the date type yyyy-mm-dd, but after opening SQlite in QGIS, this column is written as a double type. How do I convert data in the form of a number to a ...
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1answer
204 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
437 views

Arcade expression to see if current date is within two dates?

I am new to building expressions in Arcade and I am having trouble writing an expression that can be used to check start and end times of different areas and evaluate if the current date is within the ...
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1answer
1k 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 ...
4
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1answer
59 views

How to determine the right time of Landsat 8?

Sorry, please help me clarify this issue. Assume that I have information from a Landsat 8 image with the time shown as below: Start time: 2018:288:03:13:25.1532590 Stop time: 2018:288:03:13:56....
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2answers
628 views

Filter a shapefile by date in the Query Builder of QGIS

I have a shapefile that I'm trying to filter by date (i.e. START_DATE). This same query START_DATE = '2007-07-25' works in the Attribute Table > Select features using Expression, but not in the ...
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1answer
404 views

Reducing number of points, keeping most recent data within given distance, using QGIS?

I have a HUGE dataset of points that were collected along a route. The data may change daily, and the most recent data is the most important. What I would like to do is take only 1 point from a given ...
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1answer
104 views

Stack RasterDataset taking into account the dates between images

Good morning, 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 ...
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0answers
137 views

ogr2ogr: filter on date-field

ogr2ogr -spat_srs EPSG:31370 -spat 179600 167350 179800 167500 -f "ESRI Shapefile" test.shp "WFS:http://ccff02.minfin.fgov.be/geoservices/arcgis/services/WMS/Cadastral_Layers/MapServer/WFSServer?" ...
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2answers
88 views

Show “!” label when the date is close

In the attribute table I have a column "the end of the contract" with date. I want QGIS to show me the label "!" when there will be 30 days or less until the end of the contract.
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1answer
265 views

Incorrect time displaying in ArcGIS API for JavaScript popup template?

I'm creating a web map that is updated a few times a day showing voltage readings from meters on our distribution network. This layer has a field called ReadTime, and the data type is Date. The date ...
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1answer
258 views

Thematic map using date field in ArcGIS [duplicate]

I need to create a thematic map for time intervals (ex. 1/1/1920-31/12/1929). To every polygon corresponds a date (from a date field) and I need them to be coloured depending in which interval they ...
2
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1answer
137 views

Style features based on difference between current date and date in attribute table

In QGIS >2.18, is it possible to style features based on the age gap between the current date and date recorded in the attribute table. For instance I have purchased a significant amount of OS data ...
6
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1answer
178 views

Adding date to label in QGIS Atlas composer?

I'm trying to add the current date into a label for use in a composer for colleagues to run on a daily basis. The label is currently; Bins to be delivered: [% "Count" %] All I need to add is the ...
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2answers
66 views

BC Dates on cartodb.com?

I'm trying to use historical dates to build a torque map on Cartodb.com, with data going back to 8000 BC. But the date format doesn't seem to convert anything bellow 0100 01 01 (1st Jan 100 AD), and I'...
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1answer
362 views

QGIS: How to convert date values with format d-m-yyyy in a string field, into date values with format yyyy-mm-dd in a date field?

I have date values with the format d-m-yyyy in QGIS. They are in string field. I want to convert them into date values with the format yyyy-mm-dd. I want them in a date field. Can this be done ...