Pete Marsden
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barbellchart.bsky.social
Pete Marsden
@barbellchart.bsky.social
71 followers 39 following 43 posts
Data analyst/forest goblin/doodler
Posts Replies Media Videos
barbellchart.bsky.social
Just finished a blog on using colour theory in data visualisation.

I've seen a lot on accessibility, use of colour for categorisation, divergence etc. but I think this plugs a gap.
#datafam, #tableau, #datavisualization, #colortheory

barbellchart7332.live-website.com/data-visuali...
Colour theory in data visualisation - barbellchart
I’ll take you through a basic explanation of colour theory, how it can be applied to data visualisation, and how you can use it to build an effective colour palette of your own.
barbellchart7332.live-website.com
November 11, 2025 at 2:39 PM
barbellchart.bsky.social
~ #datafam FEEDBACK REQUEST~

Leaping WAY out of my comfort zone here, into a world of CRINGE!

Building a website for my portfolio and some (yikes) tutorials. First attempt linked below.

Help me get better at this?

Thx!

#SQL #Tableau #cringe
barbellchart7332.live-website.com/sql-tutorial...
SQL Window Functions - FIRST_VALUE - barbellchart
Video tutorial on the FIRST_VALUE SQL window function.
barbellchart7332.live-website.com
November 6, 2025 at 8:18 PM
barbellchart.bsky.social
Inktober day 8 - "Reckless"
#inktober #inktober2025 #notanartist
October 8, 2025 at 6:08 PM
barbellchart.bsky.social
Very rushed inktober offering today!
Day 7 - "Starfish"
#inktober #inktober2025 #notanartist #chocolatestarfish
October 7, 2025 at 4:41 PM
barbellchart.bsky.social
Inktober day 6 - "Pierce"
#inktober #inktober2025 #notanartist
October 6, 2025 at 8:49 PM
barbellchart.bsky.social
Inktober day 5 - "Deer"
#inktober #inktober2025 #notanartist
October 5, 2025 at 4:43 PM
barbellchart.bsky.social
Inktober day 4 - "Murky"
#inktober #inktober2025 #notanartist
October 4, 2025 at 4:38 PM
barbellchart.bsky.social
Gonna try to inktobe for inktober.
Day 3 - "Crown"
#inktober #inktober2025 #notanartist
October 3, 2025 at 9:17 PM
barbellchart.bsky.social
Finally had a legit business use for a Sankey chart. Fun (albeit time-cosuming!) to build in Tableau.
Dashboard: public.tableau.com/app/profile/...
August 6, 2025 at 2:03 PM
barbellchart.bsky.social
Thank you for bringing comfort in dark places.
Fare thee well.
June 1, 2025 at 10:47 AM
barbellchart.bsky.social
I'd never noticed the 5th Beetle on Abbey Road before.
Doodling makes you look closer.
June 1, 2025 at 8:10 AM
barbellchart.bsky.social
This week's Workout Wednesday technical challenge. I found this tough - MUCH prefer prepping data in SQL to trying to model it in Tableau. Felt like I was fighting poor data structure throughout, e.g. using MAKEDATE to get months for the line chart. Just felt... wrong.
#WOW2025 #Tableau
May 20, 2025 at 6:58 AM
barbellchart.bsky.social
Prelim sketch for my next doodle 🥺
May 18, 2025 at 7:28 PM
barbellchart.bsky.social
This week's #Makeovermonday. Nice, chewy dataset... enjoyed this one!
Link to viz: public.tableau.com/views/MOM202...
#Tableau #datafam
May 18, 2025 at 6:41 PM
Reposted by Pete Marsden
fredericfery.bsky.social
for the folks using Tableau Public to showcase their work, nice to see the @bsky.app option in your social links
May 16, 2025 at 11:04 PM
barbellchart.bsky.social
Finally finished. Back to data viz for a bit.
May 17, 2025 at 7:46 PM
barbellchart.bsky.social
Starting to think I don’t have the boredom threshold for this learning-to-draw malarkey
May 13, 2025 at 8:44 PM
barbellchart.bsky.social
This week's Makeover Monday... showing why I can't improve on the original pie/bar combo. Pew Research nailed it: elegant simplicity, low cognitive load, high read accuracy.
Link: public.tableau.com/shared/2XTP3...
#makeovermonday #tableau @pewresearch.org
May 10, 2025 at 3:36 PM
barbellchart.bsky.social
In the sweetest possible way: F the “Clear Desk Policy” 😌
#ungovernable
May 9, 2025 at 10:21 AM
barbellchart.bsky.social
Tedious task? Add neurospice! Haphazardry FTW.
May 9, 2025 at 7:36 AM
barbellchart.bsky.social
This week's Workout Wednesday technical challenge was quick... had time to add some darkmode zhuzh and wotnot.

Dashboard: public.tableau.com/views/WOW202...

#WOW2025 #Tableau @workoutwednesday
May 8, 2025 at 5:46 PM
barbellchart.bsky.social
This week's Workout Wednesday challenge. Parameters were a bit fiddly but otherwise straightforward.
Link to dashboard: public.tableau.com/views/WOW202...
#WOW2025
May 1, 2025 at 11:11 PM
barbellchart.bsky.social
Example sales & margin dashboard using Tableau's "Superstore" dataset.
Yes, there's an alligator in the info overlays.
No, you can't "have it in Excel".
Link: public.tableau.com/views/SalesM...
April 26, 2025 at 4:02 PM
barbellchart.bsky.social
This week's Workout Wednesday challenge (Tableau). I always limit myself to 1hr... didn't hit the criteria for labels - no idea why INDEX()=1 doesn't work for the inverted sort on goals against but, hey, I'll check out Donna's solution when it lands!
#WOW2025
Link: public.tableau.com/views/WOW202...
April 24, 2025 at 1:17 PM