enhancement and counter (instead of time)

[pas-calc]

As I understood the total time is calculated by the sum of the number of samples where the condition applied multiplied with the sample rate (what happens when the sample rate changes? only arbtt-capture knows this variable, the other programs do not know it?)

Enhancement: Add the possibility to increment a counter each time the tag changes (or at least within a category), therefore the information about the last tag would be accessible (which is the case in sample dumping only), so in the stage of post-processing.
This would yield the nice opportunity to detect how many times the user switched to e.g. mail when the user was not working with mail before (this is an important indicator for productivity to keep this number low!)

One could write a (bash) script that post processes this data captured already
quick&dirty solution:
arbtt-stats --dump-samples --filter='$date>='`date +"%Y-%m-%d"` | grep "Graph:" | grep -B1 "browsing" | grep -vE 'browsing|^--$' | wc -l
shows how many times I switched to category "browsing" (using grep print line before match)

reference https://bitbucket.org/nomeata/arbtt/issues/69/capture-active-window-changes