| Subject: | hand alternation metric |
It would be nice to have a metric which indicated the amount of typing that caused one to alternate hands (or use different fingers). Alternating hands seems to require less effort overall because the one hand has time to move to its destination before it's called upon again.
The metric should be a percentage such that 100% would indicate that every single character in the text alternated right-left-right-left. On the QWERTY, a text like this is: "also sit down"
0% would indicate that all the typing was on one hand. On the QWERTY, a sample text is: "as we grew"
57.1% would be the metric value for this sample: "as it once"
In the statements above, spaces are ignored entirely. Spaces could also be handled as:
- assume one hand always handles the space (user specifies right or left)
- assume that space always causes a hand-switch
- assume that space never causes a hand-switch
- a space restarts the state, that so switches only count within words
Perhaps the selection between these behaviors could be the value of the option.
The question also arises, how should one handle shifted characters? They require both hands.