I've got one value at 12 in a serie almost always between 0 and 5, on a datetime yAxis.
The max is set to this value programmatically.
But without zooming in, you dont see any peak in the line. Tooltip doesn't show this value neither.
The problem is why would a user zoom in, (here or there ?) , as he wont see any peaking tip on the line. (I found the value with the navigator because I knew it should be there.)
Moreover, I end up with a very tiny line of 5 pixels (as my other values are very small), jammed at the bottom of the chart, and a lot of air above until 12 the max !
Any idea welcome.
Related
I want to use the Highcharts StockChart library to make a chart. Here's more info on the chart I need to create:
The type of the chart is datetime
The data is being updated on every minute (it's data from stocks), so the chart is being constantly updated.
The data of the chart is from 9:00am to 11:40am and then from 12:35pm to 3:00pm (there's a lunch break).
The data is being shown with bars in an interval of 5 minutes (data is received for every 5 minutes except for the lunch break).
The bars will start to be drawn from left to right as the data is received.
The bars width needs to be the same size regardless of how many data is being shown on the chart.
The labels of x axis of the chart need to be always the same and on the same position (from 9:00am to 3:00pm every hour) even when there's missing data (a line must be drawn on the x axis).
So, I'm using the max property set to that day at 3:00pm on the x axis of the chart. With this, I can:
Have the bars width to be the same
Have the x axis be drawn regardless of the missing data on the same interval (until 3pm).
Everything works ok until the lunch break (11:40am). However, when receiving data for 12:35pm (after lunch break), the chart will ignore the max property and the last line of the x axis that is drawn is until 1pm (this line needs to be drawn until 3pm). I assume that this is because until 11:40am all the data for 5 minutes is present, so the chart understands the interval on which the data needs to be drawn and also can draw the x axis lines on the same interval. But as soon as there's a gap on the data, the chart doesn't know anymore if data will keep coming in an interval of 5 minutes, so will just take into consideration all the data that has received until now, ignoring the max property.
I have tried different options in order to solve the issue:
I used ordinal property set to false. With this, I can solve the issue of the missing x axis labels until 3pm, but the issue is that the lunch break will have a gap on the chart. I need to merge the lunch break and having the x axis labels drawn until 3pm.
I tried to use the tickInterval property and was able to set the interval of the x axis but only for the data that is being drawn. However, the x axis label it still until 1pm and needs to be until 3pm.
I tried to use the breaks property for the lunch break while using the ordinal property set to false but didn't work. Also, the chart needs to be merged on the lunch break; using this property will create a gap on purpose, so this property won't help me to fix this issue.
So, I noticed that the interval is being changed correctly where there's data, but the lines are not being drawn where there's no data on the x axis (only until 1pm and not until 3pm). And if I use the ordinal property, it will show all the x axis lines for the missing data, but need to hide the gap for the lunch break.
Any help with this is appreciated =)
UPDATE:
I noticed that when there's still no data, if using v1.3.1 of highcharts (the one I'm currently using), the x axis lines are being drawn correctly until 3pm, but if using the latest version this doesn't happen. It seems that the max property is being ignored for the latest version.
Including the links of jsfiddle for my code on the comments (since stackoverflow doesn't allow me to post many links because don't have enough reputation).
I was able to achieve what I wanted. In the end what I did was to create null data to fill this gap for the lunch break. Also, I created null data for the remaining data until 3pm, that way the x axis lines were drawn properly: https://jsfiddle.net/K4Cj6/201/:
[1504528800000,null,null,null,null]
Thanks anyway guys =)
The problem is that, if I try to change the lowest point to somewhere higher, the entire chart will be lowered severely.
How do I adjust each point with no above mentioned issue?
P.S. I use Highchart's Highstock.
It would be helpful if you could show a JsFiddle with the actual working code. Without knowing what exactly is going on with your chart it's difficult to figure out what the issue is and how to fix it.
Have a look at the yAxis - Highstock API Reference, you could potentially make use of min or max to counteract the scaling. Again though, without seeing your code it's tough to know.
If I understand your problem, you are trying to set the 7th point from currently at ~150 to something really high, say 5000? I did not notice any real change in the position of other points if the new value was under 1500 (or something around twice the first point)
Appears that your chart is set to comparison mode, hence, I believe, the default max and min are (100% & -100%) by default, this is w.r.t. to first point of the series. Highcharts would auto adjust these extremes if any of the points were to lie outside this range, you could force an override using yAxis.min & max.
For instance, you can set yAxis.min to -100 and yAxis.max to 100 like this
yAxis: {
min:-100,
max:100
}
Play around with the min and max to get to the values that suits your data the most, do remember these are % comparison to the first point. Any points outside these ranges would not show in the chart.
#jsFiddle
In a candlestick graph i am building, the latest bar is cut-off partially such that even the bar is not visible. Thus it's difficult to judge the high and low by seeing the bar.
I'm unable to post a pic now but it's like the last rectangle being cut in half.
I'm tried a lot of options in the api but can't figure out why this is not showing correctly. The chart margin and axis offset options havent' helped. Is there a way i can set the series margin from the plot area so that it displays right.
For this problem, the best solution is to insert a dummy series which should be hidden from every aspect of the chart. So try this, insert a dummy series from the last point of the data series to some extra buffer(as per need). Then remove this series from the chart by explicitly removing it from the legends (using showinlegend),chart(setting linewidth to 0) and from tooltip by having a check in formatter. Hope this solves your problem.
I had the same problem and couldn't figure it out, because no matter how I changed the xAxis.maxPadding or changed the xAxis.max, it would always cut off the last candlestick when I clicked on the range selector.
To solve it, (hack) I just added an extra data point in my series and set it 1 day past the last day and set all values to null.
Without any code or a pic, it's hard to tell the problem, but it sounds like you need to use the max padding option. http://api.highcharts.com/highcharts#xAxis.maxPadding. You may also want to look at endOnTick as well as whether you are setting max on the axis.
I am using a Highcharts Stock graph to show a percentage with respect to time.
http://jsfiddle.net/michaelchart/yYmPR/1/
At certain zoom levels (in this case, when zooming to a timespan of between about 6 and 12 years) the plot strangely turns from a line to sporadic points.
Any ideas as to why this might be? Or is it a bug with Highstock?
You can see an example of a working Highstock graph here http://www.highcharts.com/stock/demo/basic-line.
After posting on the Highstock forum and consequently having an issue posted on github, I found that it was because of the default value of the gapSize option. According to the docs;
gapSize : Number
Defines when to display a gap in the graph. A gap size of 5 means that if the distance between two points is greater than five times that of the two closest points, the graph will be broken.
In practice, this option is most often used to visualize gaps in time series. In a stock chart, intraday data is available for daytime hours, while gaps will appear in nights and weekends.
Defaults to 5.
Setting gapSize to null fixes the problem.
In my particular case, the reason of this problem was bad data output.
Within "series" property, within the "data" array there was a "false" value.
Example:
series : {
"type":"column",
"name":"Test",
"data":[541,784,false,251,353]
}
Corrected the problem in the backend so "false" was interpreted as 0, and everything works now.
So i have a custom UISlider. It's vertical (i did it with the +270° technic). I have 3 images, respectively for the minimum value, maximum value and for the thumb. Everything seems good but i have problems with the extrema values, as you can observe on the screen capture (even though it's a little dark).
The slider on the left is perfect ! Both end of the sliders show the images perfectly and the cursor (thumb) is perfectly cutting the slider in 2.
The other two sliders on the right shows a similar issue. We can see that, when in extrema value, the cursor is not well located (there shouldn't be any part of the image below or above the middle of the cursor !) Oo
More to that, let's look at the right slider (with minimum value). We can see that image has been cut on the bottom ! Indeed it should be close. It's the same thing for the maximum value, the image looks like it's been cut.
I looked at the bounds of the slider view by touching it at both ends and looking at its coordinates. The slider was defined with a height of 300 but i can perform touches at coordinate 307, or -6 !!! I don't really understand why..
For more information, coordinates form 300 to 310 represents the maximum value i defined and negative coordinates (from 0 to -10) represents the minimum value.
-> So We can notice there's a difference of 10 at both ends.
Please help ! :s