chthonicdaemon

chthonicdaemon has asked 6 questions and find answers to 78 problems.

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chthonicdaemon questions

Convert ISO 8601 date+time string to date
Tidy data from multilevel Excel file via pandas
Plotting a curve with equidistant (arc-length) markers
Robust detection of grid pattern in an image

chthonicdaemon answers

Why is there a dB difference in the spectrum analysis between Sonic Visualizer and my Python script?
Efficient boolean operation of a pandas series object on a pandas dataframe object
Placing a condition while calculating using numpy array
Checking count discrepancies from one date to another in dataframe
`funcalls` output from scipy.optimize.fmin_l_bfgs_b unreliable?
awk extended pattern matching (embedding pattern matching in actions for already matched strings)
Issues changing a global variable value in python
what gets returned when you return self?
Why does my grep command output "--" between some lines?
How to force sympy to extract specific subexpressions?