Re: Python script to set start & end time of data browser

["Kasemir, Kay via Tech-talk" <tech-talk@aps.anl.gov>]

The Data Browser widget and thus “trend” in your script have no “start_time” property.

You need to see what “trend” is via

      print(trend.__class__.__name__)

and then study the source code for the API.

The API is specifically not guaranteed, you might have to rewrite your scripts for future versions.

Here’s an example that might help you in the current version of CS-Studio:

# Script triggered by a "minutes" or "start" PV

#

# pvs[0]: Either 'loc://minutes(10.0)' or 'loc://start("2025-10-09 11:00”)'

# depending on option chosen below

from org.csstudio.display.builder.runtime.script import PVUtil, ScriptUtil

from org.phoebus.util.time import TimeRelativeInterval, TimestampFormats

from java.time import Duration, Instant

# DataBrowserWidget

db = ScriptUtil.findWidgetByName(widget, "Data Browser")

# org.csstudio.trends.databrowser3.model.Model

model = db.getDataBrowserModel()

# Option 1 for PV with number of minutes

# Create relative time range ending 'now'

#minutes = PVUtil.getDouble(pvs[0])

#millis = int(minutes*60*1000)

#range = TimeRelativeInterval.startsAt(Duration.ofMillis(millis))

# Option 2 for PV with start date, also ending ’now'

start = TimestampFormats.parse(PVUtil.getString(pvs[0]))

end = Instant.now()

range = TimeRelativeInterval.of(start, end)

# Option 3 for two PVs with start and end date

#start = TimestampFormats.parse(PVUtil.getString(pvs[0]))

#end = TimestampFormats.parse(PVUtil.getString(pvs[1]))

#range = TimeRelativeInterval.of(start, end)

print(range)

model.setTimerange(range)

---

I am trying to set start and end time of my trends in data browser with the python script 

from org.csstudio.display.builder.runtime.script import PVUtil, ScriptUtil

trend = ScriptUtil.findWidgetByName(widget, "trend")

start_time_text=PVUtil.getString(pvs[0])

end_time_text=PVUtil.getString(pvs[1])

# Set the start/end time properties of the Data Browser

trend.setPropertyValue("start_time", start_time_text)

trend.setPropertyValue("end_time", end_time_text)

Here I am setting start and end time of data browser by pressing the button.

But I am getting an error,

"java.lang.IllegalArgumentException: java.lang.IllegalArgumentException: Widget 'trend' (databrowser) has no 'start_time' property
"