4th of July Fireworks – an Excel animation for you

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To all our readers & friends from USA,

I wish you a happy, fun & safe 4th of July.

For the last 4th of July (2013), we (Jo, kids & I) were in USA. We went to Washington DC to meet up a few friends for that weekend. And we had one of the most memorable evenings of our lives when we went to national mall area in the evening to watch beautifully choreographed fireworks. Kids really loved the amazing display of fire-crackers and enthusiasm. (here is a pic, taken by Nakshu, our daughter)

While we all are back in India this time, it doesn’t mean we cant celebrate 4th of July. So I made some fireworks. In Excel of course.

Here is a little Excel animation I made for all of us.

4th of July Fireworks – Excel animation

First watch this quick demo (<15 secs)

Download the 4th of July fireworks workbook

I got the Excel fireworks idea very late in the evening. So the file is not very clean. But easy to understand and play with. Download it here.

How is this made?

Lets spare the detailed tutorial for another day. Here is a quick summary.

  1. Lets assume a fire work goes in a straight line at an arbitrary angle between 75 to 105 degrees (90 being vertical) to a random height.
  2. Lets assume the firework effect creates 40 spokes of a perfect circle whose radius grows as the firework explodes.
  3. So we create a scatter plot with lines & spokes.
  4. Thru VBA, we increase the length of line from 0% to 100%, thus creating firework shooting to sky effect.
  5. Then, we increase the radius of circle from 0% to 100% to create firework explosion effect.
  6. Finally we change the previous line height & circle radius back to 0% before showing next firework.
  7. At last, we toggle the display visibility of message (“Have a fun 4th of July”)

That is all. Here are a few previous examples that detail some of these techniques.

So thats all for now. Enjoy your 4th of July weekend and lets meet Monday with something awesome.

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12 Responses to “Analyzing Search Keywords using Excel : Array Formulas in Real Life”

  1. Very interesting Chandoo, as always. Personally I find endless uses for formulae such as {=sum(if(B$2:B$5=$A2,$C$2$C$5))}, just the flexibility in absolute and relative relative referencing and multiple conditions gives it the edge over dsum and others methods.

    I've added to my blog a piece on SQL in VBA that I think might be of interest to you http://aviatormonkey.wordpress.com/2009/02/10/lesson-one-sql-in-vba/ . It's a bit techie, but I think you might like it.

    Keep up the good work, aviatormonkey

  2. Andy Pope says:

    Hi Chandoo,

    You might find this coded solution I posted on a forum interesting.

    http://www.excelforum.com/excel-programming/680810-create-tag-cloud-in-vba-possible.html

  3. [...] under certain circumstances.  One of the tips involved arranging search keywords in excel using Array Forumlas.  Basically, if you need to know how frequent a word or group of keywords appear, you can use this [...]

  4. Chandoo says:

    @Aviatormonkey: Thanks for sharing the url. I found it a bit technical.. but very interesting.

    @Andy: Looks like Jarad, the person who emailed me this problem has posted the same in excelforum too. Very good solution btw...

  5. bob says:

    Realy great article

    "You can take this basic model and extend it to include parameters like number of searches each key phrase has, how long the users stay on the site etc. to enhance the way tag cloud is generated and colored."

    How would you go about doing this? I think it would need some VB

  6. Thiago says:

    Hi,
    I found the usage very interesting, but is giving me hard time because the LENs formula that use ranges are not considering the full range, in other words, the LEN formula is only bringing results from the respective "line" cell.

    Using the example, when I place the formula to calculate the frequency for "windows" brings me only 1 result, not 11 as displayed in the example. It seems that the LEN formula using ranges is considering the respective line within the range, not the full range.

    Any hint?

  7. Hui... says:

    @Thiago
    You have to enter the formula as an Array Formula
    Enter the Formula and press Ctrl+Shift+Enter
    Not just Enter

  8. Gary says:

    is there a limit to the number of lines it can analyse.
    Ie i am trying to get this to work on a list of sentances 1500 long. 

    • Hui... says:

      @Gary
      In Excel 2010/2013 Excel is only limited by available memory,
      So just give it a go
      As always try on a copy of the file first if you have any doubts

  9. Sumit says:

    Apologies if I am missing something, but coudn't getting frequency be easier with Countif formula. Something like this - COUNTIF(Range with text,"*"&_cell with keyword_&"*")

  10. Ray says:

    Apologies if I missed, but what is the Array Formula to:

    1. Analyze a list of URL's or a list of word phrases to understand frequency;
    2. List in a nearby column from most used words to least used words;
    3. Next to the list of words the count of occurrences.

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