Jasperreports时间序列图 [英] Jasperreports time series chart
问题描述
我有一个csv文件作为数据源。我想创建一个时间序列图表来显示一天中的数据。来自csv文件的时间序列数据类似于 0:15 0:30 0:45 ... 23:45
,并且每次pot都有一个我想要显示的值在图表中。
I have a csv file as the data source. I want to create a time series chart to show the data during a day. The time series data from csv file is like 0:15 0:30 0:45 ... 23:45
, and every time pot has a value which I want to show in the chart.
所以我只使用: new SimpleDateFormat(HH:mm)。parse($ F {time})
是时间周期表达式,但图表看起来只有一个点,只有 23:59:59.999
和 00: 00:00.000
在x轴上
So I just use: new SimpleDateFormat("HH:mm").parse($F{time})
to be the Time period expression, but the chart looks like just one dot, and just 23:59:59.999
and 00:00:00.000
on the x-axis
如何修复它以显示 0:15 0:30 0 :x轴上的45 ... 23:45
和y轴上的相应值?如何设置时间段表达式以及任何其他设置?
How do I fix it to show 0:15 0:30 0:45 ... 23:45
on x-axis and corresponding value on y-axis? How do I set the time period expression, and any other setup?
推荐答案
如果要显示CSV文件中的每个条目在X轴上,不要使用时间序列图表,而是使用线图表。
您也不必解析日期 - 只需将字段分配给类别表达式即可完成。
If you want to show each entry in your CSV file on the X-axis, don't use the time series charts, but the "Line" chart. You don't have to parse the date either - simply assign the field to the "Category expression" and you should be done.
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