Hi all,
Using SQL Server Reporting Services 2008 R2.
I have a line chart, that represents the current day's data.
My dataset returns data for the day divided up into 15 minute intervals
start_time, end_time, volume
I need to create a smooth line chart of these values, with a cumulative sum of the volumes.
It is possible for a value to be NULL in a 15 minute interval, but I have set the custom attribute on the chart to EmptyPoint = Average so that we do not see a break in the line.
HOWEVER, as it is a view of the current day's data, there will be empty data points for each 15 minute interval that has not yet occurred. I do not want to display these points - I want to only display the line up to the latest time we have data for, but for the chart to still show the whole day.
I tried setting the colour of the series to transparent for 15 minute intervals that are in the future with this expression:
=IIF(Fields!date_hour_end_time_stamp.Value > MAX(Fields!event_time_stamp.Value), "Transparent", "Automatic")
This works, but it makes the line on the legend also transparent for some reason even though not all the values are empty.
How can I achieve this without breaking the legend?
Edited to add:
I have two lines on this chart, and the other is a target line - which does need to display for the whole day.