Is the current version 7.2.x Zk charts support combined domain charts?
For example: https://imgur.com/a/AZRNQ
I think the combined domain charts you mean is: http://www.java2s.com/Code/Java/Chart/JFreeChartCombinedXYPlotDemo1.htm
I summarize its characteristics:
Zk Charts doesn't have exactly the same chart type. But I think you can simulate it with 2 charts. The steps are:
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JFreeChartCombinedXYPlotDemo1, it also sets the same x values for all series)chart.getXAxis().getLabels().setEnabled(false)I think these steps will make 2 charts look quite similar to JFreeChartCombinedXYPlotDemo1. I think the main difference is:
JFreeChartCombinedXYPlotDemo1 has one legend with 3 series, but ZK charts has 2 legends.
Is this solution feasible for you?
Yes, I have already tried the method that was suggested by you; however, it's still a bit clucky. I need to have date marker align across multiple subplots. problem with this setup: https://cdec.water.ca.gov/misc/twochartsstackedoneach_other.png
bztom35 ( 2021-04-07 15:10:31 +0800 )editWant to achieve this with Zkoss Charts: https://cdec.water.ca.gov/misc/wantthisinzkosscharts.png
bztom35 ( 2021-04-07 16:32:03 +0800 )editif you set the same date to the x-axis for 2 charts, they should both have the same date labels on the x-axis, e.g. https://www.zkoss.org/zkchartsdemo/line_basic
why do you need to get min and max from a chart? I suppose you provide data to a chart.
according to your chart image, I found date and time are separate on the x-axis. I think "01/13 12:00" should be one point, but it likes they are 2 separate points.
And the x values on both chart doesn't match, you can make them consistent when creating a model or series.
You should make x-axis consistent by providing same x values for both chart, for example if you add 1 point in the 1st chart:
model.setValue("Tokyo", "Jan", 7);
Then you should add 1 point with the same X value and different value in the 2nd chart:
model.setValue("Tokyo", "Jan", 10);
It looks like you want to draw an extra line in a chart, please reference this example: https://github.com/zkoss/zkchartsessentials/blob/master/src/main/java/org/zkoss/zkcharts/essentials/SeriesComposer.java
private void addPlotLine() {
List list = new LinkedList<>();
PlotLine line = new PlotLine();
line.setValue(1);
line.setWidth(5);
line.setColor("#FF0000");
list.add(line);
chart.getXAxis().setPlotLines(list);
}
You can visit https://github.com/zkoss/zkchartsessentials/blob/master/src/main/webapp/series.zul to see the result.
There is another approach.
ZK traditional chart component is based on JFreeChart. But it doesn't support the type Combined XY Plot by default, you need to implement your own ChartEngine by extending org.zkoss.zkex.zul.impl.JFreeChartEngine and use your chart engine by https://www.zkoss.org/javadoc/latest/zk/org/zkoss/zul/Chart.html#setEngine-org.zkoss.zul.impl.ChartEngine- or https://www.zkoss.org/javadoc/latest/zk/org/zkoss/zul/Chart.html#setEngine-java.lang.String-
Asked: 2021-04-05 02:34:04 +0800
Seen: 18 times
Last updated: Apr 12
Have you seen this example? Combination chart with dual axes: https://www.zkoss.org/zkchartsdemo/combodualaxes
jeanher ( 2021-04-06 12:12:54 +0800 )editYes, but it's not a combined domain chart. It's similar to highchart stocks.
bztom35 ( 2021-04-06 12:46:32 +0800 )editZK charts doesn't cover highcharts stock. We'll have to see if there's a different approach.
jeanher ( 2021-04-07 09:11:05 +0800 )edit