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I have a set of CSV files with about a 100k records in them. The records need to be visualized in an x-y diagram.

Specifically, I'm looking for:

  1. Seamless zooming in and out of the data
  2. Navigation on both axis
  3. A "trace mode" where I can trace the line with the cursor and the value under the cursor is displayed as text.

Does anyone know a tool capable of this?

I do often need to plot sensor data in charts and am currently using Excel for the purpose. Most of the time, I need line and scatter/xy plots with multiple series.

However, Excel charts are not interactive. I want to be able to easily zoom and pan in the data. Basically a data browser. I am looking for software recommendations for Windows or Mac. Anyone knows a good tool?

I've looked into a couple of Excel macros (always require custom VBA code) and the that ships with OS X (painful to import data, only xy plots).

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3 Answers 3

Spotfire is an amazing commercial application that can do visualizations of large amounts of data, including scatterplots. Spotfire has a web player and demo gallery. It is expensive, but has a free trial.

For a scatterplot example, see the Pilot Hours Comparison tab of the Airline Incident Analysis demo.

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It's a bit too heavy I think, but I'll have a look –  Johannes Rudolph Mar 15 at 17:24

You might be able to roll your own solution with Processing (open source)

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I found a working solution using Grapher, which comes with MacOS X. You can import a CSV file as a Point-Set via Equation->New Point Set. Works like a charm.

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