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2

It's all depends on the specification and construction of the node Nodes can have very complex and comprehensive structure. Did you hear about Redux Devtools? I think that in this tool connotations and connections between nodes are readable, intuitive and work well. I recommend to see how the module behaves during the interaction: https://chrome.google....


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In case you want to make it interactive, as user clicks on a node, highlight all children nodes with a common colour and show links with dotted lines. At the same time, show parent with some other colour and make current node-to-parent link as bold one. Unless user clicks on some other node, keep this colour coding intact. For information in menu, you can ...


5

Regarding the particular claim you mention, imagine the limit as the width (height in your horizontal arrangement) of bars approaches their length, and where (like in your example image) the rounding is not just "corners" but produces fully semi-circular ends to the bars. In this case the areas (and thereby visual "largeness") of the bars become artificially ...


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If the users' goal is to read a specific or accurate value from the bar's length, then @Schmuddi's answer describes the importance of having a flat end. An example of this would be a traditional glass thermometer, where the exact length of the fluid is very meaningful, and the user must be able to read a specific value. However, if the goal is just to ...


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There is a paper by Skau et al. (2015) that investigates in how far the effectiveness of bar charts is affected by different types of visual alternations. The authors tesed whether these alternations affect how well participants can make relative comparisons and absolute judgments using the bar. Participants were presented different types of bar charts, and ...


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