Requirement to allow time slider for date BCE
I would also love it if they would work! I ended up chatting with tech support recently about it - we have a couple of projects that map locations in China the frequently require BCE dates.
The only workaround I've found so far - when we build time maps, arbitrarily assign dates just for the time bar purpose. First I'll fill in all of the CE dates, and then backfill made-up dates just so they appear visually correct on the time bar.
I'll add a "Display Date" for the date value that someone actually sees when the click on data.
It causes the time bar to look a little weird, but visually - it looks correct!
I had a solution which involved using Attribute Rules. I have a from Date and a to Date in which you enter the year ie -275 for 275BCE by entering this number two other fields are populated the label field with a value of 275 BCE and a time for the slider.
The slider code is
var dDate
var lTime = ($feature.FromYear * 100000)
dDate = Date(lTime)
return dDate
The 100000 can adjusted
For Label
if ($feature.FromYear < 0) {
var tYear = ""
if ($feature.FromYear < -212000000) {
return "Number Out of Range"
}
if ($feature.FromYear < -9999) {
tYear = Text(Abs($feature.FromYear), '#,###') + " BCE"
} else {
tYear = Text(Abs($feature.FromYear) , '####') + " BCE"
}
return tYear
}
if ($feature.FromYear > 0) {
var tYear = ""
tYear = $feature.FromYear + " CE"
return tYear
}
if ($feature.FromYear == 0) {
return $feature.FromYearLabel
}
The thing here that he value a filled automatically
The Table appears like this
The code is simple and anyone can adjust it to their needs
I cheated because I had a Featureclass with a label polygon which was also sensative to the slider and thus would label the within the box
Not very elegant but worked, I could not work out how to relabel slider, it seems possible but I couldn't work it out in time
