Data analysis in python
My days in Matlab is definitively not over, but it's a clear trend that more and more people I work with tend to use open source software tools for data analysis and visualization. This has motivated me to test alternative tools and compare them with matlab with respect to functionality and performance. Recently, I've been working with correlation of data from gas sensors. For the SINTSENSE concept, I collect data from the sensors into an Influx 1.x database and plot data using grafana. I found not functionality to plot the correlation between sensors, so I resolved this by extracting data from the database every hour, calculate the correlation cofficients and then push them back into the database. This data was then plotted in grafana alongside the sensor responses. The work with SINTSENSE made want to explore the possiblities of doing correlation analysis on timeseries data. The calculation of the correlation is straightforward, but in order to calulate dynamic correlation, d...