Hi myself 😁
but it maybe useful to others struggling too.
There has not been a problem to the column types, as these were already numeric, but as it is now working, I list what I did (Scatter Layout as seen in the screenshot above):
- the Z Axis contains the numeric count value that relates to the displayed data points
- the image is a jpeg with a (white) background (the png used before was transparent resulting in a "black" image on which the actual image parts were nearly invisible)
- I twice had to delete the visual and recreated it in the report - resulting in a working visual
- it seem that in Settings of the visual, Show legend can be set to Off, while Show axes is On (not sure if this really takes any effect)
So finally, I am able to make use of the fantastic SandDance visual. Thanks to the developers!
If I have other findings, I will edit this post