1069 results found
Allow zero and negative values in logarithmic axes
log(0) === 0
log (-x) === log(x) * -134 votes
Title and Chartnames To Be Selectable with mouse .Would You Please Add this opprtunity?
I can't select the title and the chart categories . In some situations I need to select and copy those strings . Would You Please Add this opportunity ASAP?34 votes
Hi, this feature is prevented in two places, because there were problems with text being selected when trying to zoom in. See https://github.com/highcharts/highcharts/issues/3224.
If you want to enable text selection, there are two lines where the event handling is prevented. If you comment out both these lines, your users can select text:
HighStock support for several date format such as decimal year (UTC) or Julian date
It would be very convenient to pass several date formats to HighStock and use the scroll/zoom functionalities with those dates (without any transformation in UTC day-month-year-hour:min:sec).
For instance, astronomers use large time series but dates are usually formatted in "Julian Days", "Modified Julian Days" or Decimal Years (UTC) which are all double numbers. It would be nice to be able to see those values on the X-axis keeping the scroll/zoom functionalities.
UTC decimal years Ex : Date=[2012.345643, 2012.35432,2012.37234, etc...]
Julian dates Ex : [2456342.7345,2456342.7845,etc....]
modified Julian dates : Ex : [56342.2345,56342.2845,etc....]32 votes
Provision to add dataLabels (median, min, max) in boxplot
There must be a provision to add labels for max, min, median in the plot itself apart from the hover. While taking print, it would be great of the labels are printed for ease of use.32 votes
Border for each legend item
set border color,width, dash style for legend item for look like series.
I mean, customize each item legend32 votes
Multiple collpasible treegrid - Gantt yAxis
I bumped to this question https://www.highcharts.com/forum/viewtopic.php?t=42309 and also this linked question https://stackoverflow.com/questions/56153029/higcharts-gantt-chart-with-table-and-sub-tasks. Got me wondering why this is not posted yet. Is this possible?32 votes
Add Custom Buttons
Include options to set up custom buttons with call-backs to perform certain functionality.
For example, I would love to be able to have a button next to the current print and export buttons that would be used for help/information about the chart.31 votes
Here’s how you do that: http://jsfiddle.net/highcharts/2F4pJ/.
It has always been around, but perhaps we need to document this more clearly.
Add the ability to produce psychrometric charts:
Sunburst chart: Option to show series data labels outside the leaf level nodes with connectors
Currently, it is observed that Sunburst chart series data labels when shown, overlap or only the show/hide behavior of data labels can be achieved through the formatter function.
Refer the Sunburst chart's series data labels on the following link:- http://www.dundas.com/support/blog/sunburst-charts-homerun-or-groundout
Expected behavior is to configure the series data labels in such a way that if the arc size of a node is less than a particular value, instead of hiding the data label, show it outside the leaf level nodes of the chart, also adjust the distance of data labels and its connectors from the chart.31 votes
A theme creator for different styles of the library would be nice.31 votes
Shared horizontal crosshairs
When using a shared tooltip and horizontal crosshairs, the crosshair will only display on the first series drawn, if there is more than one. Even if the cursor starts out tracing along a different series, the crosshair is pinned to the first series drawn. Could this behaviour be modified so the crosshair is associated with the series the cursor is highlighting?29 votes
Option for fixed width (groupPadding) between columns
I have a column chart that can have a variable number of columns. I would like a slight gap between each column, but I'd like it to be consistent no matter how many columns there are or how wide they are. I've tried groupPadding and pointPadding, but if you use a static value the padding seems to vary depending on how wide the columns are. See this example:
It would be nice to have a way to define a fixed padding in pixels or points that always stays the same.29 votes
add support for subscripts and superscripts to the Renderer buildText function.
Currently, the buildText function doesn't render subscripts and superscripts in the SVG output, but subscripts and superscripts are supported in SVG 1.1 using the baseline-shift attribute on the tspan element. Please add support for parsing <sub> and <sup> tags and rendering them as appropriate tspan elements.29 votes
Background color for labels on the Axis.plotLines
I would love to be able to set background color for labels on the yAxis.plotLines:
Crop / Flow Plot Band Titles
If you have a band title that exceeds the width of the band it currently overflows in unattractive ways. It would be nice if there were a few options for situations where the title exceeds the width of a plot band like:
- Crop (with optional center, left, right, alignments)
- Bleed into neighboring plot bands (the current behavior that may not ALWAYS be undesirable)
Add Print and Export events handler
It'd be useful to have access to some more events, specifically I was thinking about 4 new events which could be captured and managed by dedicated handlers: onStartPrint, onFinishPrint, onStartExport and onFinishExport
The first two are related to the act of printing the chart via the print button, the other two are related to chart exporting.28 votes
Here’s a proposal for startPrint and endPrint event: http://jsfiddle.net/highcharts/k1o2w9ba/
Step line that draws leading or following part
Currently, I can use a step line to draw non-continuous data. However, the rendering of the first or last data points in a series does not show the leading or following horizontal data line.
For example, the last data point in the first series represents the data from Apr to May. However, the rendering makes it seem like it's only data for Apr and that there's a gap in data between Apr and May.28 votes
Gantt + Boost
Gantt chart is really cool but performance limits you to maybe 10-20 rows. We need to support over 1000, with interaction. Animation is not important. Currently the boost module doesn't work with gantt, but if it did it would be truly awesome.28 votes
Thanks for writing! The Boost module deals with the data points, in this case it would rendering the rectangles for the tasks.
I don’t think enabling Boost for Gantt would make a very big difference. Rendering 1000 rectangles in SVG should’t be a problem in the first place. I suspect the performance bottleneck is something else, like the grid axis or something.
Can you share a demo of your problematic chart, where we can do some profiling?
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