For CODAP to interpret data as a date, it has to be in a format that CODAP understands. See our help docs on this.

In the dataset you sent, CODAP is treating each date as a string, effectively causing your date attribute to behave as a set of categories.

Here’s an example of how you can extract the date info, rearrange it, add the time as well, and then create a Date attribute that CODAP understands. I made a separate attribute for each part of the date, but you could write one formula to create the new date column, which in your case would be concat(split(Tarih, “.”, 2), “/”, split(Tarih, “.”, 1), “/”, split(Tarih, “.”, 3) , “, “, Saat)