# Easy char X trace Decimal limit **URL:** \ **Category:** Ignition\ **Tags:** vision\ **Created:** [June 16, 2023, 9:51am UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131 "2023-06-16T09:51:09Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![prasath.t](https://avatars.discourse-cdn.com/v4/letter/p/898d66/32.png) [@prasath.t](https://forum.inductiveautomation.com/u/prasath.t)\ **Post date:** [June 16, 2023, 9:51am UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/1 "2023-06-16T09:51:09Z")
Hi Guys, ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/f/af96d2dcc9fe1006c0467efa34a0dd9b2983fec9.png) In easy chart when i select x trace it showing it showing 3 4 digit after decimal. **but i want to show only 2 digit after decimal.** Is it any way to fix it? ---
**Author:** ![justinedwards.jle](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/justinedwards.jle/32/37854_2.png) [@justinedwards.jle](https://forum.inductiveautomation.com/u/justinedwards.jle)\ **Post date:** [June 16, 2023, 11:35am UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/2 "2023-06-16T11:35:55Z")
If you look in the extension functions for the easy chart, there is one specifically for customizing the xTrace labels. You could use python to round the value to two decimal places. ---
**Author:** ![prasath.t](https://avatars.discourse-cdn.com/v4/letter/p/898d66/32.png) [@prasath.t](https://forum.inductiveautomation.com/u/prasath.t)\ **Post date:** [June 16, 2023, 12:37pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/3 "2023-06-16T12:37:12Z")
Here is code ```auto def getXTraceLabel(self, chart, penName, yValue): # Format the yValue with 2 decimal places formatted_y_value = "{:.2f}".format(yValue) # Return the formatted value as the x-trace label return str(formatted_y_value) ``` ---
**Author:** ![lrose](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lrose/32/62724_2.png) [@lrose](https://forum.inductiveautomation.com/u/lrose)\ **Post date:** [June 16, 2023, 12:39pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/4 "2023-06-16T12:39:40Z")
Can just be this: ```auto def getXTraceLabel(self, chart, penName, yValue): # Format the yValue with 2 decimal places return "{:.2f}".format(yValue) ``` No need for the string conversion, it’s already a string. ---
**Author:** ![prasath.t](https://avatars.discourse-cdn.com/v4/letter/p/898d66/32.png) [@prasath.t](https://forum.inductiveautomation.com/u/prasath.t)\ **Post date:** [June 16, 2023, 12:40pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/5 "2023-06-16T12:40:48Z")
one question date format Is it correct ```auto date_obj = datetime.fromtimestamp(yValue) # Format the datetime object as a desired date format formatted_date = date_obj.strftime("%Y-%m-%d %H:%M:%S") return str(formatted_date) ``` ---
**Author:** ![lrose](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lrose/32/62724_2.png) [@lrose](https://forum.inductiveautomation.com/u/lrose)\ **Post date:** [June 16, 2023, 12:41pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/6 "2023-06-16T12:41:43Z")
I would use `system.date.format()` ---
**Author:** ![prasath.t](https://avatars.discourse-cdn.com/v4/letter/p/898d66/32.png) [@prasath.t](https://forum.inductiveautomation.com/u/prasath.t)\ **Post date:** [June 16, 2023, 12:47pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/7 "2023-06-16T12:47:34Z")
> [@lrose](#): > > `return "{:.2f}".format(yValue)` tried like this system.date.format(yValue, "yyyy-MM-dd HH:mm:ss") but getting error i only want to change the x trace date format any code idea you have? ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/0/d0287521a2b592a22d97df6a28fd046be1377f0d.png) ---
**Author:** ![justinedwards.jle](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/justinedwards.jle/32/37854_2.png) [@justinedwards.jle](https://forum.inductiveautomation.com/u/justinedwards.jle)\ **Post date:** [June 16, 2023, 1:06pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/8 "2023-06-16T13:06:23Z")
You can also limit your decimals to two places using this setting: ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/1/e15a6dda6bd876efe9160519839b173a1d95511d.png) ---
**Author:** ![prasath.t](https://avatars.discourse-cdn.com/v4/letter/p/898d66/32.png) [@prasath.t](https://forum.inductiveautomation.com/u/prasath.t)\ **Post date:** [June 16, 2023, 1:07pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/9 "2023-06-16T13:07:42Z")
Yes ,thanks i want this to be implemented for normal xy chart also. that y ---
**Author:** ![justinedwards.jle](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/justinedwards.jle/32/37854_2.png) [@justinedwards.jle](https://forum.inductiveautomation.com/u/justinedwards.jle)\ **Post date:** [June 16, 2023, 1:57pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/10 "2023-06-16T13:57:24Z")
> [@prasath.t](#): > > tried like this system.date.format(yValue, "yyyy-MM-dd HH:mm:ss") I have a solution to this question here: > [@Easy Chart Xtrace & Mark Mode datetime format](https://forum.inductiveautomation.com/t/easy-chart-xtrace-mark-mode-datetime-format/67159/4): > > Update: I developed a work around that produces the desired effect by overriding the AutoTickDisplayDateAxis extension of the DateAxis and subsequently customizing the plot's date and time formats. Here is the code: def configureChart(self, chart): from java.text import SimpleDateFormat from org.jfree.chart.axis import DateAxis pureDateFormat = SimpleDateFormat("yyyy/MM/dd") pureTimeFormat = SimpleDateFormat("h:mm:ss a z") dateAxis = DateAxis() plot = chart.getPlot() plot.setDomainA… ---
**Author:** ![lrose](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lrose/32/62724_2.png) [@lrose](https://forum.inductiveautomation.com/u/lrose)\ **Post date:** [June 16, 2023, 2:08pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/11 "2023-06-16T14:08:19Z")
For reference, your code in the `configureChart` extension function would look like this: ```auto def configureChart(self, chart): from java.text import SimpleDateFormat from org.jfree.chart.axis import DateAxis dateFormat = SimpleDateFormat("yyyy-MM-dd") timeFormat = SimpleDateFormat("HH:mm:ss") dateAxis = DateAxis() plot = chart.getPlot() plot.setDomainAxis(dateAxis) plotDateField = plot.getClass().getDeclaredField('dateFormat') plotTimeField = plot.getClass().getDeclaredField('timeFormat') plotDateField.setAccessible(True) plotTimeField.setAccessible(True) plotDateField.set(plot,dateFormat) plotTimeField.set(plot,timeFormat) plotDateField.setAccessible(False) plotDateField.setAccessible(False) ``` Good work @justinedwards.jle , I would only say that I would set the Accessibility back to False after mucking about with reflection. ---
**Author:** ![prasath.t](https://avatars.discourse-cdn.com/v4/letter/p/898d66/32.png) [@prasath.t](https://forum.inductiveautomation.com/u/prasath.t)\ **Post date:** [June 16, 2023, 2:18pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/12 "2023-06-16T14:18:40Z")
> [@lrose](#): > > ```auto > from java.text import SimpleDateFormat > from org.jfree.chart.axis import DateAxis > dateFormat = SimpleDateFormat("yyyy-MM-dd") > timeFormat = SimpleDateFormat("HH:mm:ss") > dateAxis = DateAxis() > plot = chart.getPlot() > plot.setDomainAxis(dateAxis) > plotDateField = plot.getClass().getDeclaredField('dateFormat') > plotTimeField = plot.getClass().getDeclaredField('timeFormat') > plotDateField.setAccessible(True) > plotTimeField.setAccessible(True) > plotDateField.set(plot,dateFormat) > plotTimeField.set(plot,timeFormat) > plotDateField.setAccessible(False) > plotDateField.setAccessible(False) > > ``` After using this script i am getting same space in both left and right side of chart ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/e/0e9d2de675fc6285a6618927872396d52c585273.png) ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [June 16, 2023, 2:21pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/13 "2023-06-16T14:21:09Z")
> [@lrose](#): > > set the Accessibility back to False after mucking about with reflection Not necessary. `.setAccessible()` doesn't change the class, just makes that reference to the field or method (the instance right there) ignore the private/protected/package visibility. ---
**Author:** ![lrose](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lrose/32/62724_2.png) [@lrose](https://forum.inductiveautomation.com/u/lrose)\ **Post date:** [June 16, 2023, 2:23pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/14 "2023-06-16T14:23:02Z")
I had no such artifact in my testing, so I would assume there is something else going on. Also, your date didn't change and it definitely should have. ---
**Author:** ![prasath.t](https://avatars.discourse-cdn.com/v4/letter/p/898d66/32.png) [@prasath.t](https://forum.inductiveautomation.com/u/prasath.t)\ **Post date:** [June 16, 2023, 2:28pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/15 "2023-06-16T14:28:35Z")
no i tired with test data also same thing happening ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/7/2/7249c6de821a74bfed66c5f2968da681419a7892.png) see in x axis config also ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/5/d58b3c4c6037a359838301e52ccbe92fe06978ff.png) give zero for lower and upper bound when i disable the script it space is removing ---
**Author:** ![lrose](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lrose/32/62724_2.png) [@lrose](https://forum.inductiveautomation.com/u/lrose)\ **Post date:** [June 16, 2023, 2:35pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/16 "2023-06-16T14:35:03Z")
Well, the script in the `configureChart` is overwriting the dateAxis with a brand new one, so any configuration you need to do will need to be done there. So, change the script to this: ```auto def configureChart(self, chart): from java.text import SimpleDateFormat from org.jfree.chart.axis import DateAxis dateFormat = SimpleDateFormat("yyyy-MM-dd") timeFormat = SimpleDateFormat("HH:mm:ss") dateAxis = DateAxis() dateAxis.lowerMargin = 0 dateAxis.upperMargin = 0 plot = chart.getPlot() plot.setDomainAxis(dateAxis) plotDateField = plot.getClass().getDeclaredField('dateFormat') plotTimeField = plot.getClass().getDeclaredField('timeFormat') plotDateField.setAccessible(True) plotTimeField.setAccessible(True) plotDateField.set(plot,dateFormat) plotTimeField.set(plot,timeFormat) ``` ---
**Author:** ![justinedwards.jle](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/justinedwards.jle/32/37854_2.png) [@justinedwards.jle](https://forum.inductiveautomation.com/u/justinedwards.jle)\ **Post date:** [June 16, 2023, 2:43pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/17 "2023-06-16T14:43:16Z")
Check your console for errors ---
**Author:** ![prasath.t](https://avatars.discourse-cdn.com/v4/letter/p/898d66/32.png) [@prasath.t](https://forum.inductiveautomation.com/u/prasath.t)\ **Post date:** [June 16, 2023, 2:45pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/18 "2023-06-16T14:45:18Z")
> [@lrose](#): > > ```auto > dateAxis = DateAxis() > dateAxis.lowerMargin = 0 > dateAxis.upperMargin = 0 > plot = chart.getPlot() > plot.setDomainAxis(dateAxis) > plotDateField = plot.getClass().getDeclaredField('dateFormat') > plotTimeField = plot.getClass().getDeclaredField('timeFormat') > plotDateField.setAccessible(True) > plotTimeField.setAccessible(True) > plotDateField.set(plot,dateFormat) > plotTimeField.set(plot,timeFormat) > > ``` yes getting this error NameError: global name 'dateFormat' is not defined ---
**Author:** ![lrose](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lrose/32/62724_2.png) [@lrose](https://forum.inductiveautomation.com/u/lrose)\ **Post date:** [June 16, 2023, 2:46pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/19 "2023-06-16T14:46:11Z")
Show your actual code. I suspect you have made a copy paste error. ---
**Author:** ![prasath.t](https://avatars.discourse-cdn.com/v4/letter/p/898d66/32.png) [@prasath.t](https://forum.inductiveautomation.com/u/prasath.t)\ **Post date:** [June 16, 2023, 2:48pm UTC](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131/20 "2023-06-16T14:48:32Z")
> [@lrose](#): > > ```auto > from java.text import SimpleDateFormat > from org.jfree.chart.axis import DateAxis > dateFormat = SimpleDateFormat("yyyy-MM-dd") > timeFormat = SimpleDateFormat("HH:mm:ss") > dateAxis = DateAxis() > dateAxis.lowerMargin = 0 > dateAxis.upperMargin = 0 > plot = chart.getPlot() > plot.setDomainAxis(dateAxis) > plotDateField = plot.getClass().getDeclaredField('dateFormat') > plotTimeField = plot.getClass().getDeclaredField('timeFormat') > plotDateField.setAccessible(True) > plotTimeField.setAccessible(True) > plotDateField.set(plot,dateFormat) > plotTimeField.set(plot,timeFormat) > > ``` correct copy paste issue. cleared now thanks [Next page](https://forum.inductiveautomation.com/t/easy-char-x-trace-decimal-limit/75131.md?page=2)