I make a tree map like this picture , minimum number of value is -2000 and the tree map get the minimum range from -10K .
How can I get -10K? Is there any option to reach to this value in tree map? How can I calculate it? all of values of heatmap are dynamic and change in each second , maybe after one second the range change to -10 to +10
You can define min param in colorAxis.
colorAxis: {
min: 1
},
Related
I need to add graphic annotations in a chart on the date (x) axis, so I added a new series with a constant value of 0 (x: date, y: 0), with custom image markers. Annotations look like this:
The problem with this approach is that the constant 0 value in the annotation series is messing around with the automatically placed ticks (on the right), which then stretch the whole Y range from 0 onwards, instead of the min and max of other series, as it is by default. That drastically affects the display of other series, whose value are far away from 0, making them look less diverse.
Highcharts comes with an annotation module, bit I didn't find an option to pin it to the axis and use a different graphic.
Is it possible to either:
a) Prevent the annotation series to influence the Y axis ticks?
b) Make customized annotations on the X axis without adding new constant series?
The easiest solution here I think would be to create a new yAxis, and have your constant series use that yAxis. Like this:
yAxis: [{
...//original yAxis
}, {
visible: false //this hides all axis lines, ticks, and labels
}]
Then in the series, you would set:
series: [{
... //Real data series
}, {
yAxis: 1, //constant series
...
}]
I have a Highcharts with two series (one as type "line" and other as "scatter"). The "line" serie has 1000+ value points and the "scatter" serie has one value point (the y value of this point is = 2)
I want to select the "scatter" point on the yAxis, but this point will not be selected. Instead of this point, the other points (line) are selected. The property "allowPointSelect" is set to true
Other important options that are enabled:
crosshair = true (xAxis only)
stickyTracking = true;
What I have tried already:
the radiusPlus and radius properties changed to bigger value <100 (plotOptions.series.marker.states.hover and plotOptions.series.marker.states.select)*
Note: It's very difficult to reproduce this in jsfiddle with 1000+
values :(. That's why I added some screens).
Does anyone have a solution for this?
If you are never wanting the user to select the scatter point (or any scatter points) you can set the zIndex of the series such that the line series is rendered "above" the scatter series. From the docs:
zIndex: Number Define the visual z index of the series.
Defaults to undefined.
With no z index, the series defined last are on top With a z index,
the series with the highest z index is on top
Please refer the fiddle codehttp://jsfiddle.net/yuvarajkumarg/az290eyq/1/
In Highchart of type Chart, when we plot for height = 0 and pressure = 2, we get a gap as shown in jsfiddle. I want point to be plotted on the X-axis(2,0). But the graph looks like it is plotted on (2,2) since the y-axis plot starts way above the x-axis. How to remove the gap ?
The issue is the categorized axis.
There are probably a few ways around the issue, but I would do it this way (on your xAxis):
tickmarkPlacement: 'on',
min:0.5,
max:6.5
Example:
http://jsfiddle.net/az290eyq/2/
You could also do it by not using categories, and using the axis label formatter in order to display the numeric sequence that you need.
[[ edit for comments:
For the min and max values - the x axis values for a categorized axis are the category array index values. So the first category is x = 0, the second is x = 1, etc.
Because Highcharts puts the the label in the center of the value's space, setting the min/max to the actual min/max value +/- 0.5 will align the center of the space with the start/end of the axis.
So, you can calculate this dynamically by using 0.5 for the min, and counting the categories array and using (count -1.5) as the max.
Additionally, setting the tickmarkPlacement proerty to 'on' moves the tick mark to the center of the space as well, aligning the ticks with the start/end of the axis as well.
In highstock chart, highest value is being displayed on the top and lowest values on the lower points, is there anything I can use in highstock so that I can show lowest values on the top and highest values on the lowest points as I need to display ranks. Lowest rank means highest priority so must be displayed on highest point.
To make the values go from lowest to highest you can use yAxis.reversed, like this:
yAxis: {
reversed: true
}
For area-series, if you want the area to appear "below" the series you can combine the above with plotOptions.area.threshold. This requires knowing the maximum Y-value of your data.
For example your data is:
data: [[1418860800000,1],[1419206400000,2],[1419292800000,3],[1419379200000,1],[1419465600000,1],[1419638400000,5],[1419724800000,7]]
The maximum Y-value here is 7. We can use that in our settings like this:
plotOptions: {
area: {
threshold: 7
}
}
Using both of these options can be seen in this JSFiddle demonstration.
I have some data that can have values in the range (0..100). Highcharts will sometimes label the axis from -10 to 110, which looks odd.
How can I prevent this? I can set a fixed min and max value for the axis, but if the current values happen to be between e.g. (50..60), I'd rather let Highcharts zoom in on the axis accordingly. Just don't want Highcharts to ever show anything outside of (0..100).
I could of course determine the appropriate min and max values myself every time I load data, but was hoping there would be some kind of minMin and maxMax setting?
So it looks like this isn't possible; opened a feature request.
Nowadays highcharts has floor and ceiling options for this use case.