Summary:
Ref T13279. Allow engines to choose how areas in a stacked area chart stack on top of one another.
This could also be accomplished by using multiple stacked area datasets, but datasets would still need to know if they're stacking "up" or "down" so it's probably about the same at the end of the day.
Test Plan: {F6865165}
Subscribers: yelirekim
Maniphest Tasks: T13279
Differential Revision: https://secure.phabricator.com/D20818
Summary: Ref T13279. We currently draw a point on the chart for each datapoint, but this leads to many overlapping circles. Instead, aggregate the raw points into display points ("events") at the end.
Test Plan: Viewed a stacked area chart with many points, saw a more palatable number of drawn dots.
Subscribers: yelirekim
Maniphest Tasks: T13279
Differential Revision: https://secure.phabricator.com/D20814
Summary:
Ref T13279. See that task for some discussion.
The accumulations of some of the datasets may be negative (e.g., if more tasks are moved out of a project than into it) which can lead to negative area in the stacked chart.
Introduce `min(...)` and `max(...)` to separate a function into points above or below some line, then mangle the areas to pick the negative and positive regions apart so they at least have a plausible physical interpretation and none of the areas are negative.
This is presumably not a final version, I'm just trying to produce a chart that isn't a sequence of overlapping regions with negative areas that is "technically" correct but not really possible to interpret.
Test Plan: {F6439195}
Reviewers: amckinley
Reviewed By: amckinley
Subscribers: yelirekim
Maniphest Tasks: T13279
Differential Revision: https://secure.phabricator.com/D20506
Summary:
Ref T13279. Currently, we store a fairly low-level description of functions and datasets in a chart. This will create problems with (for example) translating function labels.
If you view a chart someone links you, it should say "El Charto" if you speak Spanish, not "The Chart" if the original viewer speaks English.
To support this, store a slightly higher level version of the chart: the chart engine key, plus configuration parameters. This is very similar to how SearchEngine works.
For example, the burndown chart now stores a list of project PHIDs, instead of a list of `[accumulate [sum [fact task.open <project-phid>]]]` functions.
(This leaves some serialization code with no callsites, but we may eventually have a "CustomChartEngine" which stores raw functions, so I'm leaving it for now.)
As a result, function labels provided by the chart engine are now translatable.
(Note that the actual chart is meaningless since the underlying facts can't be stacked like they're being stacked, as some are negative in some areas of their accumulation.)
Test Plan: {F6439121}
Reviewers: amckinley
Reviewed By: amckinley
Subscribers: yelirekim
Maniphest Tasks: T13279
Differential Revision: https://secure.phabricator.com/D20504
Summary:
Ref T13279. Replace the hard-coded default range with a range computed by examining the chart data.
Instead of having a "Dataset" return a blob of wire data, "Dataset" now returns a structure with raw wire data plus a range. I expect to add more structured data here in future changes (tooltip/hover event data, maybe function labels).
Test Plan: {F6439101}
Reviewers: amckinley
Reviewed By: amckinley
Subscribers: yelirekim
Maniphest Tasks: T13279
Differential Revision: https://secure.phabricator.com/D20503
Summary: Ref T13279. Makes charts incrementally more useful by allowing the server to provide labels and colors for functions.
Test Plan: {F6438872}
Reviewers: amckinley
Reviewed By: amckinley
Subscribers: yelirekim
Maniphest Tasks: T13279
Differential Revision: https://secure.phabricator.com/D20501
Summary:
Ref T13279. This adds support for:
- Datasets can have types, like "stacked area".
- Datasets can have multiple functions.
- Charts can store dataset types and datasets with multiple functions.
- Adds a "stacked area" dataset.
- Makes D3 actually draw a stacked area chart.
Lots of rough edges here still, but the result looks slightly more like it's supposed to look.
D3 can do some of this logic itself, like adding up the area stacks on top of one another with `d3.stack()`. I'm doing it in PHP instead because I think it's a bit easier to debug, and it gives us more options for things like caching or "export to CSV" or "export to API" or rendering a data table under the chart or whatever.
Test Plan: {F6427780}
Reviewers: amckinley
Reviewed By: amckinley
Subscribers: yelirekim
Maniphest Tasks: T13279
Differential Revision: https://secure.phabricator.com/D20498
