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Remove rows with all or some NAs (missing values) in data.frame
I'd like to remove the lines in this data frame that:
16 Answers
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Avoid trailing zeroes in printf()
I keep stumbling on the format specifiers for the printf() family of functions. What I want is to be able to print a double (or float) with a maximum given number of digits after the decimal point. If I use:
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How to smooth a curve in the right way?
Lets assume we have a dataset which might be given approximately by
9 Answers
9
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Best way to format integer as string with leading zeros? [duplicate]
I need to add leading zeros to integer to make a string with defined quantity of digits ($cnt).
What the best way to translate this simple function from PHP to Python:
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SQL query return data from multiple tables
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6 Answers
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How to clear the canvas for redrawing
After experimenting with composite operations and drawing images on the canvas I'm now trying to remove images and compositing. How do I do this?
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Histogram using gnuplot?
I know how to create a histogram (just use "with boxes") in gnuplot if my .dat file already has properly binned data. Is there a way to take a list of numbers and have gnuplot provide a histogram based on ranges and bin sizes the user provides?
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Check if character is number?
I need to check whether justPrices[i].substr(commapos+2,1) .
22 Answers
22
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Removing white space around a saved image in matplotlib
I need to take an image and save it after some process. The figure looks fine when I display it, but after saving the figure, I got some white space around the saved image. I have tried the 'tight' option for savefig method, did not work either. The code:
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Select the values of one property on all objects of an array in PowerShell
Let's say we have an array of objects $objects. Let's say these objects have a "Name" property.
4 Answers
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