I have the following sample data from SQL:

SymDate CloseVal VolumeVal
27/04/2011 00:00:00 124 10404
26/04/2011 00:00:00 124.14 137740
25/04/2011 00:00:00 123.66 68777
21/04/2011 00:00:00 123.99 125848
20/04/2011 00:00:00 123.85 159345
19/04/2011 00:00:00 121.33 218996
18/04/2011 00:00:00 121.61 153145
15/04/2011 00:00:00 123.45 136575
14/04/2011 00:00:00 122.36 24947
13/04/2011 00:00:00 122.88 117004
12/04/2011 00:00:00 120.92 200767
11/04/2011 00:00:00 123.98 165617
08/04/2011 00:00:00 126.65 143676
07/04/2011 00:00:00 122.67 146927
06/04/2011 00:00:00 122.3 151058
05/04/2011 00:00:00 122.22 192926
04/04/2011 00:00:00 121.06 154770
01/04/2011 00:00:00 118.7 177493
31/03/2011 00:00:00 117.36 170417
30/03/2011 00:00:00 115.13 116598
29/03/2011 00:00:00 115.16 149041

I want to display all of the data but filter the symdate to only display labels for each Friday on the X axis with he following format =FORMAT(DATETIME(Fields!SymDate.Value),"d","en-GB").

I have tried the following with no luck =Fields!SymDate(WEEKDAY(DATETIME("16/03/2011"))) under Axes/Scale /Label Format, resulting in all labels as 3 (Wednesday)

Any pointers on how to achieve this would be greatly appreciated.

Hello Jonathan,
If we can understand your requirement correctly, here is the solution for displaying all the data and having labels on the X axis only for the Fridays:

1. In the Data Groupings >> Categories >> General, we have 3 expressions for Group By:
=YEAR(Fields!SymDate)
=MONTH(Fields!SymDate)
=DAY(Fields!SymDate)

For the Label we have:
=IF( WEEKDAY(FIRST(Fields!SymDate))=5, FORMAT(FIRST(Fields!SymDate), "d", "en-GB"), "")

2. In the Data Groupings >> Categories >> Sorting, we have 3 expressions:
=YEAR(Fields!SymDate)
=MONTH(Fields!SymDate)
=DAY(Fields!SymDate)

3. In the Data Groupings >> Values, we have two values for CloseVal and VolumeVal:
=SUM(Fields!CloseVal)
=SUM(Fields!VolumeVal)

For the second value, from General >> Options, we have selected Display on Axes – Y Axes: Secondary Y

4. In the Chart >> Axes, select Secondary Y and go to the Range tab. Set Inflate Mode to Tick and uncheck the Inflate Range Begin

For this example we have used secondary Y axis for better readability because there is great difference in the values (Close Val and Volume Val).

Best Regards,
Nevron Support Team