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Contributor II

## combine two dates field on one chart

Hi all,

I have a case where demand is seen for last 4 years and also the supply.

Demand or supply may vary for a particular day. There will be days where there is no demand or supply, or it could be that there is demand (no supply) /supply (no demand).

Like here we see from years (2014-2017) how a commodity is.

Dimension : Year(Supply Date field)

Measure: Count ( Supply Date field)

And here is the demand for the same commodity in last 4 years.

Dimension : Year(Demand Date field)

Measure: Count ( Demand Date field)

I want to combine this two charts to show on a common chart so that i can compare them one to other.

What would be the best way to do it ??

Let me know the best thoughts you have around this.

1 Solution

Accepted Solutions
Contributor II

## Re: combine two dates field on one chart

Hi everyone !!

I found an excellent way to solve this problem

Refer to : Canonical Date

Linking to two or more dates

This solved my problem.

14 Replies
Valued Contributor

## Re: combine two dates field on one chart

Create a calendar date and load like this

Calendar:

Date

From

Master Calendar;

Supply:

[Supply Date],

[Supply Date] as Date,

1 as [Supply Count]

From

Supply;

Demand:

[Demand Date],

[Supply Date] as Date,

1 as [Demand Count]

From

Demand;

Give dimension as Year(Date) and measures as sum([Supply Count]) and sum([Demand Count]) in a Line Chart

Honored Contributor II

## Re: combine two dates field on one chart

Load your data into a fact table that combines the two measures

Commodity

Fact Type -> supply / demand

Date

Value

Should let you compare your data how you want.

Contributor II

## Re: combine two dates field on one chart

Thanks Aar kay for the reply

But I dont have any master Calender.

How should i create a calender Date?

Contributor II

## Re: combine two dates field on one chart

But still i dont understand whats a fact table.

How to create it ??

At the end i need a line chart showing the values.

Valued Contributor

## Re: combine two dates field on one chart

Sample to create calendar dates

LET vStartDate  = num(Floor(YearStart(Today(),-15)));   //for min Date 1/1/2002

LET vEndDate    = num(Floor(YearEnd(Today(),15)));    // //for max Date 12/31/2032

LET vToday      = num(Today());

LET vYesterday  = num(Today()-1);

Calendar:

\$(vStartDate) + RowNo() - 1       AS Num,

date(\$(vStartDate) + RowNo() - 1) AS Date

AUTOGENERATE

\$(vEndDate) - \$(vStartDate) + 1;

Contributor II

## Re: combine two dates field on one chart

So did you call this section in the script as Master calender??

When i try to do this in the script it did not identify the Master calender

Contributor II

## Re: combine two dates field on one chart

I am getting error here. The date and master calender seems like is not identified.

Valued Contributor

## Re: combine two dates field on one chart

I just gave you a sample code aman, try creating a calendar and load and link that date field  to both the supply and demand dates that way there will be a common link to show the comparison on a graph.

Can you share the sample file

Contributor II

## Re: combine two dates field on one chart

So here is the attached sample.

Consider Actual PR1 as Demand

and Actual PR3 as Supply.

Go to the Data script and you will see the error.

Let me know if you need anything else.