![]() You don't have permission to comment on this page. Unfortunately this will give an error if olddata does not already exist, so you would need to do some capturing first or import or create a minimal dataset. You can enter any python numpy expression when creating new datasets based on old. You can then plot newdata rather than olddata. "newdata", choose data from expression, then enter an expression in the value text edit such asĪnd put this in the error text edits if your dataset has error bars. What you can do to simulate this is to create a new dataset based on a previous one but only having 300 values. There's no explicit option for only storing the last X values - it would be a good thing to add to the program and probably wouldn't be too hard to do. Sorry for the delay in replying - I'm a bit busy at work at the moment. I'm looking to just read the last data written to a file (say the last 300 lines) and graph just that (no need to store previous data either). I see there's a capture option with auto-updating, which looks great. Jeremy Sanders, author of Veusz responded to an email asking about Veusz: It is cross-platform, can auto-update from a data source, but is not explicitly set up to display realtime data. Veusz looks like a promising means to display data. If you had a donate button I would have sent a donation. It runs on the pc and isnt some subscription software/cloud/adware scam like most companies sell these days. Installation was quick, simple, and it worked immediately, solid and stable. R - (statistics package, graphing and data analysis) It works great and has many useful features for many types of data. forum post on using GnuPlot for real time plotting: RRDTool - (needs script to upate database, writes graph to file, for e.g. Kst - (Linux/Windows, please report back if you get this working, looks powerful) Advantages/disadvantages of each package or new software options should be added below. Sometimes this error is small enough that we don't. The following are possible process control and visualization software that might be adapted to work with the GCU. Veusz 15: Representing error in data 333 views 1 Dislike Share Save Practical Data Vis 43 subscribers Subscribe All data has error.
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