Would be great to import results files directly without having to go through Excel on Arbin. There is an SQL XOP for Igor that I haven't worked with yet, but when I played around with this in 2014/2015, it became apparent that I might need to convert.mdb files to mysql database. Arbin Instruments High Precision Battery Test Equipment. 762 Peach Creek Cut Off Rd. College Station, TX 77845 USA.

Released:

Plot potentiostatic data

Project description

Plotpot is a Python module that plots half and full cell potentiostaticdata automatically imported with Convpot.It keeps a journal with meta information such as mass of active material,capacity etc. for later use.

Getting Started

Prerequisites

Plotpot is based on the following software:

To get the Python environment running under Windows I recommend to use ascientific Python distribution such asAnaconda or EnthoughtCanopy, which includea precompiled version of NumPy and Matplotlib.

Installing

To install Plotpot follow these steps (tested under Windows 7 64 bit asa normal user):

1. Download and install the latestConvpotpackage. During installation choose to add Convpot to the PATH of thecurrent user.

2. Download and installAnaconda. Choose the Python3 64 bit version and install “Just for me”.

3. Update Anaconda. Open an “Anaconda Prompt” and type:

4. Create a new virtual Python environment just for running Plotpot:

5. Create a shortcut for plotpot-env on the desktop as described in the wiki.

6. Download and install (or upgrade) Plotpot by typing:

If all goes well you should be able to type plotpot and get ausage message without errors about missing packages.

Usage

Plotpot currently knows two sub-commands show, merge and journal. A detailedhelp of the sub-command options are printed with plotpot <sub-command>-h

An example plot generated with plotpot show arbintest.res looks like this:

Select data

By default all available data is plotted. The range can be selected by

• cycle number (--cycles)
• time (in hours) (--time)
• data points (--data)

For example to plot data up to cycle 5:

To plot from cycle 2 to 10:

Select plots

Plots are selected with the --plot option, e.g.

It is possible to give a comma separated list of plots and ranges separated with “-“. If no plots areselected, the voltage versus specific capacity (1) is plotted by default. Plotpot currently supportsthe following plot types:

1. Specific capacity
2. Specific capacity (circle plot)
3. Voltage and current
4. Temperature
5. dQ/dV
6. Specific capacity [mAh/g]
7. Volumetric capacity [Ah/L]
8. Specific energy [Wh/kg]
9. Volumetric energy [Wh/L]
10. Specific current density [mA/g]
11. Current density [mA/cm²]
12. C-rate
13. Hysteresis
14. Coulombic efficiency

Smooth dQ/dV plot

Plotpot has the option to smooth the dQ/dV plot by convoluting the raw data with a Hanning window ofcertain width. The smoothing strength is chosen with the level parameter ranging from 1 to 5, whichtranslates to the widths of the window.

Export data

The raw data, statistics, voltage profile and battery properties are exported with

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This generates files in csv format forfurther processing with e.g. Microcal Origin or similar software.Data per cycle is packed into a zip archive and png snapshots of the plots genererated on screen are created.

Merge Files

A battery which consists of many individual data files (which is common for the Gamry instruments) can be merged together to a single data file with the “merge” sub-command.

To process multiple files

Alternatively, the files to merge can be given in a text file listed one by line. Lines starting with the “!” character are ignored.

The output file name can be changed with the --output option.

The journal

On first execution, a journal file plotpot-journal.dat is created in the directory of the plotpotexecutable. The folder location can be changed by setting the PLOTPOT_JOURNAL environment variableto a full path as described in the wiki.

The journal file keeps a record of mass, capacity, area, volume and mass loading of the electrode.If plotpot is called with the same data file, you have the possibility to use the previously enteredvalues or enter new ones. The content of the journal is displayed with

A particular entry can be removed from the journal with:

The individual raw data files of a merged battery can be shown with

The journal file can be exported to a csv file:

Authors

• Alexander Pohl - Initial work

See also the list of CONTRIBUTORS who participated in this project.

Changelog

All notable changes and releases are documented in the CHANGELOG.

License

This project is licensed under the MIT license - see the LICENSE file for details

Release historyRelease notifications

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