I used the clause group by interval(pricetime, 5m, 'none', ,false) for aggregate calculations in DolphinDB. The output table uses the starting point of each window as the pricetime. How could I modify the code to replace it with the ending point of each window?
You can try DolphinDB function temporalAdd to add the window duration to the output pricetime. See the example:
t = table(13:01:00 13:02:00 13:03:00 13:04:00 13:04:59 13:05:00 13:07:00 13:09:00 13:09:59 13:10:00 as pricetime, rand(100, 10) as value)
res = select max(value) from t group by interval(pricetime, 5m, "none") as pricetime
update res set pricetime = temporalAdd(pricetime, 5m)
Related
This question is a slightly varied version of this one...
Now I'm using Measures instead of Calculated columns and the date is static instead of having it based on a dropdown list.
Here's the Power BI test .pbix file:
https://drive.google.com/open?id=1OG7keqhdvDUDYkFQFMHyxcpi9Zi6Pn3d
This printscreen describes what I'm trying to accomplish:
Basically the date in P6 Update table is used as a cut date and will be fixed\static. It's imported from an Excel sheet where the user can customize it however they want.
Here's what should happen when a matching row in Test data table is found for P6 Update date:
column Earned Daily - must have its value summed with the next row if there's one;
column Earned Cum - must grab the next row's value;
all the previous rows should remain intact, that is, their values won't change;
all subsequent rows must have their values assigned 0.
So for example:
If P6 Update is 1-May-2018, this is the expected result:
1-May 7,498 52,106
2-May 0 0
If P6 Update is 30-Apr-2018, this is the expected result:
30-Apr 13,173 50,699
1-May 0 0
2-May 0 0
If P6 Update is 29-Apr-2018, this is the expected result:
29-Apr 11,906 44,608
30-Apr 0 0
1-May 0 0
2-May 0 0
and so on...
Hope this makes sense.
This is easier in Excel, but trying to do this in Power BI is making me go nuts.
I will ignore previously asked related questions and start from scratch.
First, create a measure:
Current Earn =
CALCULATE (
SUM( 'Test data'[Value]),
'Test data'[Act Rem] = "Actual Units",
'Test data'[Type] = "Current"
)
This measure will be used in other measures, to save you from typing all these conditions ("Actual Units" and "Current") again and again. It's a great practice to re-use measures in other measures - saves work, makes code cleaner and easier to refactor.
Create another measure:
Cut Date = SELECTEDVALUE('P6 Update'[Date])
We will use this measure whenever we need a cut off date. Please note that it does not have to be hard-coded - if P6 table contains a list of dates, you can create a pull-down slicer from the dates, and can choose the cut-off date dynamically. The formula will work properly.
Create third measure:
Next Earn =
VAR Cut_Date = [Cut Date]
VAR Current_Date = MAX ( 'Test data'[Date] )
VAR Next_Date = Current_Date + 1
VAR Current_Earn = [Current Earn]
VAR Next_Earn = CALCULATE ( [Current Earn], 'Test data'[Date] = Next_Date )
RETURN
SWITCH (
TRUE,
Current_Date < Cut_Date, Current_Earn,
Current_Date = Cut_Date, Current_Earn + Next_Earn,
BLANK ()
)
I am not sure if "Next Earn" is a good name for it, hopefully you will find a more intuitive name. The way it works: we save all necessary inputs into variables, and then use SWITCH function to define the results. Hopefully it's self-explanatory. (Note: if you need 0 above Cut Date, replace BLANK() with 0).
Finally, we define a measure for cumulative earn. It does not require any special logic, because previous measure takes care of it properly:
Cum Earn =
VAR Current_Date = MAX('Test data'[Date])
RETURN
CALCULATE(
[Next Earn],
FILTER(ALL('Test data'[Date]), 'Test data'[Date] <= Current_Date))
Result:
I am creating an app which will perform some simple mathematical functions. One of these functions is to sum the field on my table. However, it should sum the field based on what is selected on the drop down menu and display the sum value on an edit field component. For instance, using the attached image, when I click control total, I would like to display the sum of the numbers in the fiscal period column and display it on the edit field on the right called sum.
function ControlTotalButtonPushed(app, event)
ct = app.FieldsDropDown.Value;
total = sum(app.UITable.Data.ct);
app.EditFieldTotal.Value = total;
if total == 0
app.BalanceUnbalanceLabel.Text = 'Balance';
else
app.BalanceUnbalanceLabel.Text = 'Unbalance';
end
end
I get an error:
Unrecognized variable name 'ct'
I thought app.UITable.Data.ct would refer to the column name to sum?
Please refer to the attached picture.
I've spent a long time looking around for a solution for this and not found quite what I want. Efforts to adapt existing solutions for different problems have also not worked!
I am using LookupSet to return a list of dates, then joining them to return a list:
=Join(LookupSet(Fields!cPatSer.Value,Fields!cPatSer.Value,Fields!DDate.Value,"PatD"))
I want to only show the most recent date from that list. Here is what I have tried so far:
The above function wrapped in a Max function (doesn't work because Join returns a string)
Using a split function to split the resultant string looking for the commas then using the max function
Doing both of the above but converting the output to Date objects using CDate and DateTime.Parse first as follows...
=Join(LookupSet(Fields!cPatSer.Value,Fields!cPatSer.Value,CDate(Fields!DDate.Value),"PatD"))
=Join(LookupSet(Fields!cPatSer.Value,Fields!cPatSer.Value,DateTime.Parse(Fields!DDate.Value),"PatD"))
Can anybody provide any pointers please?
I've found a solution using Custom Code. Oz Locke made a function that does various aggregates for integer data (links below), and I've amended this to work for dates instead.
In the Code property of the report, paste in this:
'Amended from Oz Locke's code:
'https://github.com/OzLocke/SSRSAggLookup/blob/master/AggLookup.vb
'Allows users to adjust the aggregation type of lookupsets in a cell
Function AggLookup(ByVal choice As String, ByVal items As Object)
'Ensure passed array is not empty
'Return a zero so you don't have to allow for Nothing
If items Is Nothing Then
Return 0
End If
'Define names and data types for all variables
Dim current As Date
Dim count As Integer
Dim min As Date
Dim max As Date
Dim err As String
'Define values for variables where required
current = CDate("01/01/1900")
count = 0
err = ""
'Calculate and set variable values
For Each item As Object In items
'Calculate Count
count += 1
'Check value is a number
If IsDate(item) Then
'Set current
current = CDate(item)
'Calculate Min
If min = Nothing Then
min = current
End If
If min > current Then
min = current
End If
'Calculate the Max
If max = Nothing Then
max = current
End If
If max < current Then
max = current
End If
'If value is not a number return "NaN"
Else
err = "NaN"
End If
Next
'Select and set output based on user choice or parameter one
If err = "NaN" Then
If choice = "count" Then
Return count
Else
Return 0
End If
Else
Select Case choice
Case "count"
Return count
Case "min"
Return min
Case "max"
Return max
End Select
End If
End Function
Then in the cell of your report, use this expression:
=code.AggLookup("max", LookupSet(Fields!cPatSer.Value,Fields!cPatSer.Value,Fields!DDate.Value,"PatD"))
https://itsalocke.com/aggregate-on-a-lookup-in-ssrs/
https://github.com/OzLocke/SSRSAggLookup/blob/master/AggLookup.vb
I am trying to fir a partial db-RDA with field.ID to correct for the repeated measurements character of the samples. However including Condition(field.ID) leads to Disappearance of the centroids of the main factor of interest from the plot (left plot below).
The Design: 12 fields have been sampled for species data in two consecutive years, repeatedly. Additionally every year 3 samples from reference fields have been sampled. These three fields have been changed in the second year, due to unavailability of the former fields.
Additionally some environmental variables have been sampled (Nitrogen, Soil moisture, Temperature). Every field has an identifier (field.ID).
Using field.ID as Condition seem to erroneously remove the F1 factor. However using Sampling campaign (SC) as Condition does not. Is the latter the rigth way to correct for repeated measurments in partial db-RDA??
set.seed(1234)
df.exp <- data.frame(field.ID = factor(c(1:12,13,14,15,1:12,16,17,18)),
SC = factor(rep(c(1,2), each=15)),
F1 = factor(rep(rep(c("A","B","C","D","E"),each=3),2)),
Nitrogen = rnorm(30,mean=0.16, sd=0.07),
Temp = rnorm(30,mean=13.5, sd=3.9),
Moist = rnorm(30,mean=19.4, sd=5.8))
df.rsp <- data.frame(Spec1 = rpois(30, 5),
Spec2 = rpois(30,1),
Spec3 = rpois(30,4.5),
Spec4 = rpois(30,3),
Spec5 = rpois(30,7),
Spec6 = rpois(30,7),
Spec7 = rpois(30,5))
data=cbind(df.exp, df.rsp)
dbRDA <- capscale(df.rsp ~ F1 + Nitrogen + Temp + Moist + Condition(SC), df.exp); ordiplot(dbRDA)
dbRDA <- capscale(df.rsp ~ F1 + Nitrogen + Temp + Moist + Condition(field.ID), df.exp); ordiplot(dbRDA)
You partial out variation due to ID and then you try to explain variable aliased to this ID, but it was already partialled out. The key line in the printed output was this:
Some constraints were aliased because they were collinear (redundant)
And indeed, when you ask for details, you get
> alias(dbRDA, names=TRUE)
[1] "F1B" "F1C" "F1D" "F1E"
The F1? variables were constant within ID which already was partialled out, and nothing was left to explain.
I have a report that should read values from 2 dataset by Currency:
Dataset1: Production Total
Dataset2: Net Total
Ive tried to use:
Lookup(Fields!Currency_Type.Value,
Fields!Currency_Type1.Value,
Fields!Gross_Premium_Amount.Value,
"DataSet2")
This returns only the first amount from dataset 2.
I've tried Lookupset function as well but it didn't SUM the retrieved values.
Any help would be appreciated.
Thanks Jamie for the reply.
THis is what i have done and it worked perfect:
From Report Properties--> Code , write the below function:
Function SumLookup(ByVal items As Object()) As Decimal
If items Is Nothing Then
Return Nothing
End If
Dim suma As Decimal = New Decimal()
Dim ct as Integer = New Integer()
suma = 0
ct = 0
For Each item As Object In items
suma += Convert.ToDecimal(item)
Next
If (ct = 0) Then return 0 else return suma
End Function
Then you can call the function:
code.SumLookup(LookupSet(Fields!Currency_Type.Value, Fields!Currency_Type1.Value,Fields!Gross_Premium_Amount.Value, "DataSet2"))
Yes, Lookup will only return the first matching value. Three options come to mind:
Change your query, so that you only need to get one value: use a GROUP BY and SUM(...) to combine your two rows in the query. If you are using this query other places, then make a copy and change that.
Is there some difference in the rows? Such as one is for last year and one is for this year? If so, create an artificial lookup key and lookup the two values separately:
=Lookup(Fields!Currency_Type.Value & ","
& YEAR(DATEADD(DateInterval.Year,-1,today())),
Fields!Currency_Type1.Value & ","
& Fields!Year.Value,
Fields!Gross_Premium_Amount.Value,
"DataSet2")
+
Lookup(Fields!Currency_Type.Value & ","
& YEAR(today()),
Fields!Currency_Type1.Value & ","
& Fields!Year.Value,
Fields!Gross_Premium_Amount.Value,
"DataSet2")
Use the LookupSet function as mentioned. With this you'll get a collection of the values back, and then need to add those together. The easiest way to do this is with embedded code in the report. Add this function to the report's code:
Function AddList(ByVal items As Object()) As Double
If items Is Nothing Then
Return 0
End If
Dim Total as Double
Total = 0
For Each item As Object In items
Total = Total + CDbl(item)
Next
Return Total
End Function
Now call that with:
=Code.AddList(LookupSet(Fields!Currency_Type.Value,
Fields!Currency_Type1.Value,
Fields!Gross_Premium_Amount.Value,
"DataSet2"))
(Note: this code was not tested. I just composed it in the Stack Overflow edit window & I'm no fan of VB. But it should give you a good idea of what to do.)