Any chance you can attach a sample workbook?
I'm curious as to whether or not you can achieve the same visualization just by using the built in squares that Tableau provides.
Thanks for the attachment.
I'm no graphic designer, but it seems that your custom shapes need to be in the right format for Tableau to work with them. If you look in your [Tableau Repository/Shapes/] folder you will notice that the Tableau shapes are all pngs with transparent backgrounds. It is puzzling to me that your custom shapes are getting completely coloured over, but hopefully it is just a file format issues, not a layer issue within the pngs (alpha layers vs transparency layers etc vs ???). All of my custom png files colour just fine.
I would start by confirming that you are using png files with a transparency layer.
Hi, thanks for your response.
I just checked the custom shapes again and they are all pngs. Not so sure if they have transparent backgrounds though. How do I verify or fix that?
Proportional Squares.PNG 28.1 KB
I use GIMP to open them and set the transparency.
Can you attach a couple of them for me to test with?
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Assuming it works out well, please can you give some directions on how to set the transparency with GIMP?
The issue is that no transparency layer was set. I've re-saved E2.png to show you what the transparency looks like.
- open file
- delete whitespace so it appears transparent
- use fuzzy select (U)
- click on white area
- press delete
- >> the white area should now be gone and you should see a grey checkerboard (right image below)
- file >> export as >> PNG using default settings
E2.PNG 339 bytes
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Yay! Worked beautifully! Thanks a lot.