Convert string to day of week crystal reports

here is how to convert UNIX timestamp to System.DateTime
http://www.codeproject.com/KB/cs/timestamp.aspx

try also this function

Function ConvertTimestamp(ByVal timestamp as Double) As DateTime
 Return New DateTime(1970, 1, 1, 0, 0, 0).AddSeconds(timestamp).ToLocalTime()
End Function

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Thanks jtoutou

I pasted your function in and I get the message:

The keyword As is missing.

Can you help?

YOu have to call the function
ConvertTimestamp("YourUnixTimeStamp")

Function ConvertTimestamp(ByVal timestamp as Double) As DateTime
 Return New DateTime(1970, 1, 1, 0, 0, 0).AddSeconds(timestamp).ToLocalTime()
End Function
Me.Label1.Text = ConvertTimestamp(1113211532)

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And because you need the day call the function like :
Me.Label1.Text = WeekdayName(Weekday(ConvertTimestamp(1113211532)))

Try this:
DayofWeek(Date(yourdatetime))
 

I think you need the day of the week right as in today is 08/13/2010 so you would need 13?
If so in your formula in your crystal report you have 2 options:
1. A complex one ( you would substitute "08/13/2010 11:00:00am" with your string fieldname that contains the unixt datettimestamp :
local stringvar input := "08/13/2010 11:00:00am";
day(Date(datetime(val(input[7 to 10]),val(input[1 to 2]),val(input[4 to 6]),val(input[11 to 12]),val(input[13 to 14]),0)))
2. An easy one. You know the day starts at position 4 for a length of 2:
Mid(yourstringfieldnamehere,4,2)
3. I do believe unix datetimestamp format is 00/00/0000 for the date part so even if it is day 1 solution 2 would still work because it would be 08/01/2010 but if that is not the case you could do it based on the slash separator which is a little more complex:
if mid( "08/13/2010 11:00:00am", instr("08/13/2010 11:00:00am","/") +2,1) = "/" then
mid( "08/13/2010 11:00:00am", instr("08/13/2010 11:00:00am","/") +1,1)
else
mid( "08/13/2010 11:00:00am", instr("08/13/2010 11:00:00am","/") +1,2)

The UNIX timestamp represents the time measured in number of seconds since the Unix Epoch (1st of January 1970 00:00:00 GMT), and is well-known to PHP-developers.

Sorry I can't get it to work. I thinks it's down to lack of understanding on my behalf.

I've attached  a report that I need to reproduce. I need to convert the time stamp into a day of the week meaning Monday,Tuesday Wednesday etc...

I re read my question and I'm sorry I didnt make this clear.

Thanks

example.png

What is not working? It says Thu 12-08. Thursday was the 12th of august.
 

I need re-produce that report. That was not done in crystal

OK what exactly is not working then?
Look at this:
http://www.chrisedwards.ws/2007/01/19/crystal-reports-converting-unix-time-stamp/
 
Also did you try  peter57r solution. I didn't double-check it but it looks like that is the solution to get the dayofweek.

13598 did youtry mine?

I'm going to retry and post back the results.

As I said I am completely new to this, so this could take some time. Sorry again

What Kind Of database are you using

If you are using SQL Databaase create a view with your table and create a new column to convert the unixtimestamp ...using
DATENAME(dd,dateadd(s,YourTimeStampClumn,'19700101 05:00:00:000'))

I'm using mysql,

I've just looked at the format of the unix time stamp and for example it looks like this 1,270,072,800.00

Are you entering the date range you want to compare against?

The formulas provided in the first comment will convert the Unix time to a date and the day of the week.

Did you try them in a formula in Crystal or are you trying to do this in the SQL?

mlmcc

when I use this formula

weekdayname(DayOfWeek (DateAdd("s", {table.timestampfield}, #1/1/1970#)))

i get this message:

The result of the section must be a a bolean

I have replaced table.timstampfield with my own table. It's called opencall.logdatex

I'm using the formula in crystal

Start by using this in your formula. It will not give you the name of the weekday yet but that way we can see what we are getting and where the issue is . First try this and let me know which value you get or what error you get:
dateadd (“s”,{opencall.logdatex}-18000, #1/1/1970#)

"The result of the section must be a a bolean "

means you are in the wrong place.

You should be creating a new formula field.

The message suggests you are in a record selection formula or conditional format button.

Thanks peter57r,

I know this looks stupid..but it's now working.

I really appreciate the help from everyone.