I am using python 3.5.3, and now I want to install pandas and numpy but not able to, following is the error in cmd, anyone can help me? Answer As others have pointed out you need to run the command with admin privileges. How to do this varies by windows version, but on Windows 8 and 10 you can just
Tag: numpy
Check if two numpy arrays are identical
Suppose I have a bunch of arrays, including x and y, and I want to check if they’re equal. Generally, I can just use np.all(x == y) (barring some dumb corner cases which I’m ignoring now). However this evaluates the entire array of (x == y), which is usually not needed. My arrays are really large,…
Numpy diff inverted operation?
Working with numpy.diff function, suppose this simple case: How can I get easily x back to original scale not differenced? I suppose there is something with numpy.cumsum(). Answer Concatenate with the first element and then use cumsum – For concatenating, we can also use np.hstack, like so – Or wi…
check if two numeric values have same sign in numpy (+/-)
currently i am using numpy.logical_or with numpy.logical_and to check if elements of two arrays have same sign. Was wondering if there is already a ufunc or a more effective method that will achieve this. My current solutions is here edit// output Answer One approach with elementwise product and then check fo…
How to automatically annotate maximum value in pyplot
I’m trying to figure out how I can automatically annotate the maximum value in a figure window. I know you can do this by manually entering in x,y coordinates to annotate whatever point you want using the .annotate() method, but I want the annotation to be automatic, or to find the maximum point by itse…
ValueError: The number of classes has to be greater than one; got 1
I am trying to write an SVM following this tutorial but using my own data. https://pythonprogramming.net/preprocessing-machine-learning/?completed=/linear-svc-machine-learning-testing-data/ I keep getting this error: My code is: My array for features which is used for X looks like this: My array for labels us…
Trying to ignore Nan in csv file throws a typeerror
I’m loading a local csv file that contains data. I’m trying to find the smallest float in a row thats mixed of NaN and numbers. I have tried using the numpy function called np.nanmin, but it throws: Any suggestions to why nanmin might not work? A link to the entire csv file: http://www.sharecsv.co…
pandas DataFrame style, highlight nan’s
Say with this DataFrame How can I check which element is nan inside df.applymap? (ie, not using df.isnull) The problem comes from where I want to use the pandas html styling. We have the built-in nan highlighting but it changes the background colour, instead I want “nan” to be displayed in red. So…
Is numpy.random.choice with replacement equivalent to multinomial sampling for a single trial?
I understand that strictly on concept, they are different. But in a single trial (or experiment) for numpy.random.multinomial, is it sampling the same way as numpy.random.choice though giving a different view of the output? For example: Output gives the identity of what was picked in the array [0,1,2,3,4,5] a…
ufunc ‘add’ did not contain loop with signature matching type dtype (‘S32’) (‘S32’) (‘S32’)
I’m trying to run someone’s script for some simulations I’ve made to try plotting some histograms, but when I do I always get the error message mentioned above. I have no idea what’s gone wrong. Here’s the complete traceback error I get: This is the code I am trying to run: What …