JavaScript Chart – Developer Challenges

Info

Author

Testing and Issues

You can test this app and submit issues during the testing period of the JavaScript Chart contest.

Entries with serious issues will not be able to win the contest, but even minor issues might be important for overall results.

Voting

1845

Issues

Fair Quokka May 8, 2019 at 13:50

— Overall performance is poor.
— Y-scale always starts from zero on the first graph.
— The graphs are blurry. Also sloppy on scrolling and zooming in and out, selecting points on the graphs with swipe.
— Bonus goal is completed, but animations jitter.

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

Slim Jaguar Apr 17, 2019 at 23:00

There are no tooltips on daily charts.
Scrollbar doesn't snap to days.
Artifacts (look at the picture below)

Swift Starfish Apr 18, 2019 at 02:55

Tooltip is a last minute bug, like another one which not noticed yet. I sad about it ).
Scrollbars change its range when year/day view changed, except last chart

Fancy Hare Apr 18, 2019 at 19:30

Wrong timeline (navigator) for pie chart

Chrome 73

Swift Starfish Apr 28, 2019 at 17:59

Yes it is correct, thank you. I have fixed it already, as you can see in attached video

MP4

Fancy Hare Apr 18, 2019 at 19:32

No tooltip and separation of the pie chart sector on hover or click/touch

0:19

Chrome 73

Swift Starfish Apr 28, 2019 at 17:54

Yes it is correct, thank you. I just didn't have enough time. I have fixed it already, as you can see in attached video

MP4

Ace Piranha Apr 17, 2019 at 19:52

Low image quality on high resolution screens

Ace Piranha Apr 17, 2019 at 19:50

Y scale on first line chart should start from minimum visible value, not from 0

Swift Starfish Apr 19, 2019 at 07:24

Not correct. From explanation of task: "A line chart with 2 lines, exactly like in Stage 1". So, this means from 0.And as you can see on Screenshot 2 (file JS_2.png) this chart starts exactly from 0.

Ace Piranha Apr 17, 2019 at 19:48

Wrong value, 1510 point is lower than 1.5K line

Swift Starfish Apr 19, 2019 at 07:13

Not an issue. As you can see from your screenshot - the labels on the Axis Y shows a rounded values. For the current screenshot - the step between values is equal 510. So 1K = 1020. This means the values is correct.

Slim Jaguar Apr 18, 2019 at 19:30

Line charts should start from minimal value, and not always from zero.
Questionable animations.
Bad elements proportion, aligning.
Sometimes x axis appears on pie, while moving scrollbar.

Swift Starfish Apr 19, 2019 at 03:48

Please read task description carefuly: "The Y-scale on line graphs should start with the lowest visible value".
Due the fact that only second chart is "Y-scale" type, this means the second chart only have to start not from zero.

Quiet Panda Apr 17, 2019 at 15:57

Chart 3 should definitely show lines (but not bars) in bonus

Swift Starfish Apr 19, 2019 at 07:17

Sorry, but you wrong. The json-file which contains detail data for this chart (for example contest\3\2018-06\07.json) defines the type of chart as "bar", not a line!

Yuriy Reznik Apr 18, 2019 at 11:53

wrong start yScale (should be min y value, not 0) and wrong xLabels position after zoom out

0:07

Swift Starfish Apr 19, 2019 at 07:28

The chart #2 should be Y-scaled. Only chart 2. And it works as you wrote (not from 0). Other charts should not starts from minimun visible value). Read the task descriptions, please. About labels i agree.

Rich Bat Apr 17, 2019 at 12:34

Blank screen

Swift Starfish Apr 19, 2019 at 07:18

it works. check again please

Li Apr 17, 2019 at 16:15

Chart 3 should definitely show lines (but not bars) in bonus

Swift Starfish Apr 19, 2019 at 07:23

The json-file which contains detail data for this chart (for example contest\3\2018-06\07.json) defines the type of chart as "bar", not a line!

Ace Piranha Apr 19, 2019 at 12:22

Something wrong happens with x labels after zoom in/zoom out

0:14

Swift Starfish Apr 28, 2019 at 18:06

Thank you. I have fixed this already, but of course not able update application here. So I just attached movie. You also can check it on my site http://ponomarenko.su

MP4

Kingly Chicken Apr 19, 2019 at 13:18

Blurred on retina

Slim Chameleon Apr 19, 2019 at 17:46

2nd chart's x values are not scaling correctly after zoom in

mac, chrome

Swift Starfish Apr 28, 2019 at 18:08

Thanks. I have fixed this already, but of course not able update application here. You Can see how it works on my site http://ponomarenko.su

Earnest Pony Apr 19, 2019 at 18:30

Wrong Y scaling

Swift Starfish Apr 19, 2019 at 18:44

thank you, I agree it - but want to notice - this appears only for last point of chart (last index)- i will fix it.

Slim Jaguar Apr 19, 2019 at 23:14

Here it is. One more visual bug with x axis

Fancy Hare Apr 22, 2019 at 13:11

The timeline (navigator) is displayed for single column chart in zoomed mode. And the selected time range for it is not 100%.

I appreciate the efforts and time you've put into this work. No dislike from me.

Chrome 73

Gifted Phoenix Apr 23, 2019 at 04:56

Negative values in zoomed mode

iPhone XS / Chrome / iOS 12.2

Crazy Pug Apr 24, 2019 at 20:33

Line chart: when zoom-out some wrong data on X axis

MBP 2018 15, Chrome, Mojave

Swift Starfish Apr 25, 2019 at 04:56

duplicated, already noticed by other testers

Crazy Pug Apr 24, 2019 at 20:35

Stacked, bars: wrong date range - missing most right bar

MBP 2018 15, Chrome, Mojave