DIY :: Geiger Counter, making your own graphs


I’ve got a few questions about the geiger graph plots and how to make them. Here’s a short explanation for those without extensive computer background. Personally I prefer using RRDTOOLS to plot any data graphs, but the installation under Windows might be a bit too difficult for the average windows user. Anyway, if you plan to user RRDTOOLS, here’s the download link, and don’t forget you’ll need to install CYGWIN as well. Japanese users might appreciate someone already had translated the manual.

For everybody else, I think the easiest way is to use Excel/Chart or OpenOffice to create pretty pictures in no time.

First, you have to launch your favourite terminal application and get some data from the (USB-)serial port and copy it with (Ctrl/C) or any other available technique. This is the data you’re going to make a graph from.

Open Excel or any other spreadsheet software and paste the data into it. Don’t forget to set “separators” to spaces or the data won’t get separated into the different columns.

In the column just before the data, enter two consecutive time values (13:30 and 13:31, for example), select them and drag black square with the mouse to fill the whole column with the time values.

Finally you may select the time and data columns together and use Chart function to draw a pretty char of your data. There are plenty of settings to adjust and make it look just the way you like it.

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