JavaScript Chart – Developer Challenges

Neat Deer Apr 17, 2019 at 12:24

Only y-scaled graph should starts with the lowest visible value.

Merry Ant Apr 17, 2019 at 12:33

My feedback from telegram team on Stage 1: "Мы также рекомендуем использование относительной шкалы для данных, чтобы линии всегда могли занимать максимальную высоту на графике. К сожалению, в Вашей работе третий и пятый графики "висят" в воздухе."

D

Deleted Account Apr 17, 2019 at 12:52

jerking pie chart when selecting one item

0:03

Merry Ant Apr 23, 2019 at 10:40

Thanks! Will be fixed

Earnest Pony Apr 17, 2019 at 13:01

marker are cut for lower values

Merry Ant Apr 23, 2019 at 10:40

Thanks! Will be fixed

Earnest Pony Apr 17, 2019 at 13:02

strange extra values in zoomed mode

20

Merry Ant Apr 23, 2019 at 10:42

Thanks! This is not the wrong data, this is a visual artifact. Will be fixed.

Earnest Pony Apr 17, 2019 at 13:02

no long tap support on labels

20

Merry Ant Apr 23, 2019 at 10:44

I knew about it, but not enough time. Will be done

Fancy Hare Apr 17, 2019 at 20:51

Pie chart: wrong timeline (navigator); wrong date selections and impossible to select just one day

0:41

Chrome 73

Merry Ant Apr 23, 2019 at 10:51

I zoom navigator in other charts, but at that time I did not understand the meaning of increasing the scale in pie chart with the same dataset. Got it, will be done

Fancy Hare Apr 17, 2019 at 20:58

Initial date range selection is not 6 Mar - 6 Apr (final month).
It is impossible to select less then almost a month on daily graphs.

0:31

Chrome 73

Merry Ant Apr 17, 2019 at 22:03

"It is impossible to select less then almost a month on daily graphs." - I forbid the range-selector to be smaller than a finger size so that it is convenient and usable

Groovy Hedgehog Apr 18, 2019 at 06:16

You will never see on the chart week day or month in expected by designs format. Just try to find somewhere "Saturday" or "November" etc. If this is so conceived, then I just think inattention to details.

10

Merry Ant Apr 23, 2019 at 10:53

I knew about it, but not enough time. Will be done

Groovy Hedgehog Apr 18, 2019 at 06:28

Also, sorry! No points (on the lines while hover) transition between sibling nodes. In Zoomed mode bottom scale caret must shift with transition between days, but not between pixels. Filter buttons on chart 4 in zoomed mode by design should be positioned on the same place under the main chart instead small filter graph.

Merry Ant Apr 23, 2019 at 20:11

Thanks! I knew about this issues, but not enough time. Will be done

Giant Parrot Apr 18, 2019 at 08:55

The percentage chart minimap doesn't finish the transition when a line is turned off. The transition gets finished when the selector is moved.

0:04

Merry Ant Apr 23, 2019 at 10:45

Thanks! Will be fixed

Giant Parrot Apr 18, 2019 at 09:05

Y axes bottom values are changed with no transition

0:05

Merry Ant Apr 23, 2019 at 13:13

No reference for bottom y-axis animation

Giant Parrot Apr 18, 2019 at 09:09

Sometimes the date scale labels disappear without a transition (watch the dates on the left on the video)

0:08

Merry Ant Apr 23, 2019 at 11:12

Thanks! "May" on video disappear without a transition. This is rare. Will be fixed

Large Beaver Apr 18, 2019 at 09:18

Invalid display polygones (area and bar charts) probably points intersections issue but text change animations looks fine

Xiaomi mi3/Default browser

Merry Ant Apr 23, 2019 at 11:03

Thanks! Please write the details, I can't reproduce it. Screen resolution (px), pixelRatio, timezone of device

Gentle Squid Apr 18, 2019 at 11:13

Wrong chart position after Zoom out

Chrome latest, Win10

Merry Ant Apr 23, 2019 at 11:01

Thanks! It does not always appear and returns to normal after any movement. Will be fixed

Gentle Squid Apr 18, 2019 at 11:23

Completely wrong zoom in/out animation

1:17

Chrome latest, Win10

10

Merry Ant Apr 20, 2019 at 13:59

God Level testing 😂 If you want change code, please change SCALE_DURATION too, then animation will be OK

Hip Hyena Apr 18, 2019 at 15:28

Unable to select time range by dragging in the preview area (outside of the current window).

Merry Ant Apr 23, 2019 at 11:09

I do not understand this issue. Preview behavior is done by reference

Slim Jaguar Apr 19, 2019 at 13:24

Here is what I've found (Screenshot)

Now your turn https://contest.dev/chart-js/entry9

Merry Ant Apr 23, 2019 at 13:14

The single date is displayed if selected time range <= 24h. This is a deliberate behavior, so that the change of dates in the zoom mode is like a reference.

Sleek Shark Apr 19, 2019 at 20:48

irregular the minimap with zoom on chart 5 - it should have a period of dates much less than all valid dates

Merry Ant Apr 23, 2019 at 11:05

Duplicate Fancy Hare Apr 17 at 20:51

Slim Jaguar Apr 19, 2019 at 23:59

also weird texts animation
no snapping

Merry Ant Apr 23, 2019 at 11:06

I do not understand this issue. Text animation is close to reference

Large Beaver Apr 20, 2019 at 20:25

No good performance in Chart #3 (IE11). But solution is perfect. Good luck in competition.

Windows 8/IE11

D

Deleted Account Apr 21, 2019 at 15:55

On 2 graph, the lines don’t occupy the top and bottom positions

All

Merry Ant Apr 21, 2019 at 18:59

In y-scaled graph lines should have a constant relationship. So yellow line shouldn't occupy the top and bottom positions on this screenshot

D

Deleted Account Apr 21, 2019 at 16:00

On 4 bonus, time starts at 3:00

All

Merry Ant Apr 21, 2019 at 18:40

Time starts at 00:00 but in your timezone (Moscow +3) it is 03:00

D

Deleted Account Apr 21, 2019 at 16:01

Error on 3 bonus

All

Merry Ant Apr 21, 2019 at 18:51

duplicate Earnest Pony Apr 17 at 13:02

Fair Quokka May 8, 2019 at 12:49

— Overall performance is above average.
— Slightly sloppy on filtering the third graph and zooming out.
— Long tap is not implemented.
— Bonus goal is completed, however zooming have some issues (the attached video #1).
— Graph #1 jitters on scrolling in some cases (reproduced on Samsung Galaxy S9, Android 9.0) – the attached video #2.

0:14

0:08

Samsung Galaxy J7 (2017), Android 8.1.0; iPhone 5S, iOS 12.1

41

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