I'm new to KNIME and trying to display and analyze measuring data containing date/time stamps. Importing and converting the timestamp string to date/time was easy thanks to your high quality nodes.
I also can display a line chart, but no chance to see and configure the date/time on the x-axis. Maybe I need some more nodes from the Timeseries group, but I can't find any information how to combine these and how to finally display it.
Is there an example available for this somewhere ?
in order to have the date/time displayed on the x-axis you can use the "Time to String"-node followed by the RowId-node. An example that does this can be found on the KNIME public server.
yes, it works. Thank you !
Couldn't find the example (could you provide a link, pls ?), but got it working according your hint.
Axis label formatting options in the resulting linechart seem to be sparse. I had to chain
File Reader - String to Date / Time - Time to String - RowId - Line Plot to shorten the datetime labels on the x-axis.
Is there a more versatile charting node around ?
the example is located on the KNIME public server which can be accessed by the "Server Workflow Project"-View that comes with KNIME 2.2.x. If you cannot see this view you can reopen it in the Views menu. If you click on "connect" in this view you'll see a listing of example workflows. The first one is the mentioned time series flow.
You are right, the formatting options of this node are limited. If you are familiar with R you could have a look at the "R View"-node which gives you the powerful charting options of R.