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ande3577 / redmine-graphs-plugin

This plugin provides instances of Redmine a method with additional graphs.
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please provide some screenshots and graphs description #11

Closed cforce closed 11 years ago

cforce commented 11 years ago

Hmm, would be great if you can explian more the "burndown" chart, as this is no calssic burndown Chart where you normally have two curves

If the actual work line is above the ideal work line, it means that there is more work left than originally predicted and the project is behind schedule. If the actual work line is below the ideal work line, it means that there is less work left than originally predicted and the project is ahead of schedule.

It would help to have an explanantion how to read this chart or an link for a documentation of this modded chart

cforce commented 11 years ago

What is the blue line? How its calculated ... If that is "estimated - spent time" then it shall be the same as the grey line and that is not the fact. I don't understand from which redmine field remaining time is made of. Please add some explanation of redmine input values and calculations.

ande3577 commented 11 years ago

Also, estimated - remaining is probably a confusing name: see #13

cforce commented 11 years ago

Tx so far. So Remaining Hours is the sum of all open issues estimations ? And Completed Hours is the sum of all closed issues estimations ?

I am trying to put my brain in, but still don't know what i shall say a project leader how this could be used to be more sucessfull. What is the best prcatice, what is best project howto, how can that lines be read, what shall be done if what situation rises. Would be great if you can give some hints too. For example. when was estimation to hight when to low when can i see project will be late ..

ande3577 commented 11 years ago

Your understanding of the Remaining/Estimated is correct.

Here's a good reference in general on reading the burndown graph and what it can tell you about a projects status (the illustrations are somewhat informal, however): https://prod.help.rallydev.com/reading-burndown-chart

Essentially, for an ideal project the remaining time should be a straight line reaching 0 at the end date of the project. If actual remaining hours plot is below this line, the project is ahead of schedule, if it is above the line, it is behind schedule.

The reasoning for adding the Completed Hours plot is to be used in analysis of how time is spent on the project. If the time to implement tasks is ideal, the spent time and completed work plots should be identical. If the spent time plot is above the completed work plot, it means that either the time needed to complete an issue was incorrectly estimated, or that the team is working inefficiently.

Actually, writing this, it seems like this is too much information for a single plot, and it would probably be wise to separate.