Quick Tips: Converting Hexadecimal, Oct and Binary to Decimal in a Single Power Query Function

A while ago I wrote a blogpost on how to use Unicode characters in Power BI. In that blogpost I used a recursive Power Query function to convert Hex values to Dec values. A few weeks back one of my site visitors kindly shared his non-recursive version of Power Query function which beautifully does the job. A big shout out to Rocco Lupoi for sharing his code. So, I decided to share it with everyone so more people can leverage his nice Power Query function. I have touched his code a bit though, but it was more of a cosmetic change, so all credits of this blogpost goes to Rocco. The benefits of his code is not limited to being non-recursive. The code below converts numbers of any base when the base is smaller than 16 like Binary and Oct, so it is not limited to Hex values only. The other benefit of the below code is that it is not case sensitive (note to the `digits `step on the code below).

Here is the `fnHex2Dec `function for Power Query:

``````(input as text, optional base as number) as number =>
let
values = [
0=0,
1=1,
2=2,
3=3,
4=4,
5=5,
6=6,
7=7,
8=8,
9=9,
A=10,
B=11,
C=12,
D=13,
E=14,
F=15
],
digits = Text.ToList(Text.Upper(input)),
dim = List.Count(digits)-1,
exp = if base=null then 16 else base,
Result = List.Sum(
List.Transform(
{0..dim}
, each Record.Field(values, digits{_}) * Number.Power(exp, dim - _)
)
)
in
Result``````

As you see in the code above, the `base `parameter is optional, so if not provided base 16 would be the default.

This is how we can invoke the above function:

``fnHex2Dec("AbCdEf", null)``
Continue reading “Quick Tips: Converting Hexadecimal, Oct and Binary to Decimal in a Single Power Query Function”

Using Unicode Characters in Power BI

There are several scenarios to use Unicode characters in Power BI including but not limited to:

• Creating simple KPI columns in Table or Matrix visuals
• To show the status of a measure more visually like using starts
• Using Unicode characters as icons in your reports representing the subject

Chris Webb explained some of the above scenarios here.

In this post I explain how you can use Power BI as a tool to generate almost all valid Unicode characters in Power BI. You can download the PBIT at the bottom of this post. Then you can copy the Unicode characters from Power BI and use them in all textual parts of your report like visual titles, text boxes and so on.

The Unicode planes start from 0 to 1,114,111 which is decimal equivalent of 0 to 10FFFF in hexadecimal numeral system. For more information on Unicode planes check this out.

So, a simple way to generate all possible Unicode characters is to generate a list of decimal numbers starting from 0 ending at 1,114,111. This way we generate a series of decimal numbers regardless of the gaps between starting and ending Unicode blocks. Then using UNICHAR() function in DAX to generate corresponding Unicode characters. With the following DAX expression you can easily generate a list and the corresponding Unicode characters: Continue reading “Using Unicode Characters in Power BI”