GNOME Bugzilla – Bug 590175
Tools should warn about missing plugins.
Last modified: 2009-08-02 23:18:19 UTC
Please describe the problem: I have entered the range for the column of the numbers which I wantedt to analyse. A new work sheet had been created, but only with output #name? I could not find any help on this issue. Steps to reproduce: 1. Mark a column of numbers 2. Werkzeuge --> Statistische Analysen --> Fourieranalyse 3. OK Actual results: see above Expected results: Does this happen every time? Other information:
Hi, I believe this has already been fixed in version 1.9.9. Which version are you using?
Note that a workaround for the fixed bug is to select an output area on the current sheet.
Attaching a sample wouldn't hurt either.
Created attachment 139647 [details] The data is from an Oscilloscope. A Fourieranalysis should be made Please find attached sample data. The fourier analysis of the "Amplitude" didn't work, see column 3. I tried with other data size like 1014 instead of 10020 but missed
Klaus, which exact version of Gnumeric are you using?
I see, you are using a new version and the Time Series Analysis Plugin may not be enabled. Please check in Tools plugin whether the Time Series Analysis Plugin is enabled. (without it you are missing the Fourier function used for this analysis.)
Just for the record, it works for me: Select B1 to B10021, (if you select the whole column the calculation may take longer). Fourier Analysis tool Click on "Lables" Direct output to D1 (if you select a certain range, you need two columns for the output.) okay and you get the required output. I note that there is a translation problem: "Real" is incorrectly here translated as "Wirklich".
I am re-titling the bug, since this applies to virtually all tools that use functions from our plugins. They need to check that those plugins are in fact loaded. It wouold be nice if we could in fact make the appearance of the tools in the menu depend on the correct plugins (plural) to be loaded.
I have added an appropriate warning to the Fourier Analysis tool. I am keeping this open since we also need to do this for all other tools that use functions from the plugins.
This problem has been fixed in the development version. The fix will be available in the next major software release. Thank you for your bug report.
Thanks to all, now the tool works. One question remains For 10020 Data input fields I expected two columns by 5010 data output fields. The tool generated 16384 output fields per column. I think that the tool has used a lot of emty input fields to do the calucaltion with the next granularity of input fields. Can you please make a note in the help file what the granularity is? e.g. 1024, 2048, 4096 ? I believe it's different between a RADIX-2 or RADIX-4 or other algorithm
From the Fourier Analysis section of the Gnumeric manual: If the given sequence does not contain a number of terms that is a power of 2 (i.e. 2, 4, 8, 16, 32, 64, 128, etc.), this tool will append zeros to reach such a power of 2!
You can find that page at http://www.math.concordia.ab.ca/~aguelzow/gnumeric/fourier-analysis-tool.shtml