Skip to main content

Modifying the model

Adding new measures.

This is a simple dashboard, just one filter (census survey year) and  few calculated measures.

The measures are:
  • Total Population
  • Previous Year Population

  • Change Percent
  • Population Change
  • Percent of US Population

also, there are two calculated measures to format and add additional information to the dashboard.
  • Value color (Green if current year population is greater than previous year population otherwise Red)
  • Most populated counties chart header (to show selected states)

To add a new measure, right-click on the US Population ACS5 table and select New Measure


the add the formula for total_population and select the thousands separator format


Repeat this process to add

prev_census_tot_pop =
VAR PreviousCensusYear =
    MAX ( 'US Population ACS5'[census_year] ) - 1
RETURN
    CALCULATE (
        SUM ( 'US Population ACS5'[total_pop] ),
        'US Population ACS5'[census_year] = PreviousCensusYear
    )

pop_change =
'US Population ACS5'[total_population] - 'US Population ACS5'[prev_census_tot_pop]


change_pct =
1 - DIVIDE ( [prev_census_tot_pop], [total_population] )
change_pct = 1-DIVIDE([prev_census_tot_pop],[total_population])


pop_pct =
DIVIDE ( [total_population], CALCULATE ( [total_population], ALLSELECTED () ) )



for the "formatting" measures.



color_pop_change =
IF (
    'US Population ACS5'[total_population] > [prev_census_tot_pop],
    "Green",
    "Red"
)

chart_header =
VAR SelectedStates =
    VALUES ( States[state_name] )
VAR NumOfStates =
    COUNTROWS ( Selectedstates )
VAR NumberOfAllStates =
    COUNTROWS ( ALL ( States[state_name] ) )
VAR AllStatesSelected = NumOfStates = NumberOfAllStates
VAR StatesNames =
    CONCATENATEX ( states, States[state_name], ", ", States[state_name], ASC )
VAR Result =
    IF (
        AllStatesSelected,
        "",
        IF (
            NumOfStates > 5,
            UNICHAR ( 10 ) & "(More than 5 States selected, see map or table for details.)",
            UNICHAR ( 10 ) & "(" & StatesNames & ")"
        )
    )
RETURN
    "Top 10 most populated counties" & Result



Is a good idea to add folders to organize the fields.

In the model, select one of the new measures and in the folder field type Measures.




Drag and drop the other measures in to folder.

Repeat the process for the format measures, creating a new folder called "Formatting".

The end result will look like this.




Now with the model completed we can start building the dashboard.

Comments

Post a Comment

Popular posts from this blog

Building the dashboard (Part 1)

To show how to create the dashboard I divided the canvas in 3 sections I going to dedicate one post for every section, and the another 2 posts for the tooltip and drill through   Adding Census Year slicer First we are going to add the census year filter. This filter will affect all visual in our dashboard. Select the slicer visual and the census_year field from the US Population ACS5 table Before diving into specifics formats, disable/enable the following formatting options to match the bellow image. Now in the selection control section change to Single select   Change the Text size, Alignment, and Color for Items,  Title and Border sections The final result Adding the Cards Select the Card visual and drag and drop total_population measure into the Fields box Rename the Fields from total_population → Total Population The formatting options are: In the Data label section, change...
Post a Comment
Read more

Building the dashboard (part 3)

Adding the top 10 counties chart We are going to add to the Census Dashboard a bar chart to show the top 10 most populated counties, also if you select States in the Map/Table, the chart need to update properly, for example if you select California and Texas in the Map, the chart needs to show the top 10 counties combining only those two States.  First we add a clustered bar chart, using County name and total_population for the Axis and Values respectively. then modify the County Filter to only include the top 10 counties by total population Now we need to change how the Map/Table interaction filters the bar chart data. Select the Map, and then Format/Edit Interaction   in the ribbon. Change the bar chart interaction type from Highlight   to Filter    Now switch to the Table visual and repeat the process Select the bar chart change the Title Text to the calculated measure chart_header.   select the measure The next post will be dedicated to adding the Drill...
Post a Comment
Read more